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Shao-Liang Zheng

@shaoliangzheng.bsky.social
181 followers 38 following 100 posts

Professional Crystallographer, Crystallography Educator

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Shao-Liang Zheng @shaoliangzheng.bsky.social · 07/10/2026
🫨 I was shocked by the statements made by the original author: "Some space groups may be mathematically legitimate, but chemically impossible... Majority of the 230 space groups proposed 200 years ago, yet to find a crystal structure" @actacrysta.iucr.org #misconception #crystallography #education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 05/10/2026
Rethinking Rosalind Franklin’s Reputation in Light of Photograph 49 😃 science.org/content/arti... @science.org #IUCr #crystallography #education
science.org
How did Rosalind Franklin miss the helix in her iconic DNA image? She didn’t
New analysis refutes James Watson’s claim he was first to recognize significance of famed photograph 51
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Reposted by Shao-Liang Zheng
Mike Glazer @glazer1.bsky.social · 30/09/2026
For those interested in cryocrystallography I have written an article for the @IUCr newsletter on the history of the Cryostream. See www.iucr.org/news/newslet....
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 29/09/2026
🎉Congrats to Megan, Jesse & Brandon from Nocera Group @harvard.edu 🔬 onlinelibrary.wiley.com/doi/10.1002/... @angewandtechemie.bsky.social #crystallography #SpaceGroupChoice #Education
onlinelibrary.wiley.com
Photochemical Oxygen‐Atom‐Transfer Reactivity of Platinum(II) Peroxycarbonates
The coordination chemistry of metal–peroxycarbonate complexes (M(CO4)) remains poorly understood, with no reported studies of the photochemical reactivity of M(CO4) complexes. The platinum(II) peroxy...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 24/09/2026
🔬 PLATON/checkCIF enables proper #validation of a structure report while also preserving the opportunity for future re-evaluation or reuse of the data in unrelated studies. 👍 doi.org/10.1107/S205... @actacrystc.iucr.org #IUCr #crystallography #education 📊
doi.org
On the SHELX, PLATON and IUCr/checkCIF crystal structure validation platform
With checkCIF the IUCr has created a unique platform for the validation and archiving of the result of a small-mol­ecule crystal structure study.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 18/09/2026
Light on Again🥳-- Yes, we can clearly observe the atom moving in the #photocrystallography experiment @harvard.edu 😀 #IUCr #crystallography #education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 11/09/2026
🔬 Pharmaceutical crystal structures from synchrotron powder diffraction: challenges in indexing, symmetry, and chemically reasonable models, with solutions, raw data, and GSAS-II files. 😀😀 doi.org/10.1107/S205... @actacryste.iucr.org @iucrjournals.bsky.social #crystallography #education
doi.org
Inter­esting hurdles in the solution of pharmaceutical crystal structures using powder diffraction data
Although solving and refining a crystal structure using synchrotron powder diffraction data can be routine, many problems present features which make the process more difficult. These include difficul...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 09/09/2026
🎉 Congrats to Celia at Harvard Art Museums🔬 Deadly Red: Photochemical Alterations in Bonazziite, Realgar, Pararealgar, and Other Arsenic Sulfide Pigments doi.org/10.1021/acs.... Light exposure+#Raman, 2D #PXRD & spectrophotometry reveal phase/color changes with light dose #crystallography #education
doi.org
Deadly Red: Photochemical Alterations in Bonazziite, Realgar, Pararealgar, and Other Arsenic Sulfide Pigments
Abstract. This study evaluates the light sensitivity of arsenic sulfide pigments, including realgar (α-As4S4), bonazziite (β-As4S4), pararealgar (γ-As4S4),
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 03/09/2026
📚 Crystallography needs to be taught, not just used: “The crystallographic community must now seize the opportunity to redefine its educational strategy and ensure that crystallography continues to be taught with the depth and rigor it deserves.” iucr.org/news/newslet... #crystallography #education
iucr.org
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Reposted by Shao-Liang Zheng
Connie Lu @cluchem.bsky.social · 30/08/2026
Educators, here's a good piece on understanding the impact of AI at the university level. Students who use AI to get the "answer" risk their own learning. Educators can help by changing our assessments of learning to focus on the process, rather than the answer. aiandeducation.mit.edu/report/
aiandeducation.mit.edu
Report – AI and Education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 26/08/2026
🎉Congrats to Nick from Betley Group at HarvardCCB 🔬Hydrogenation of a Tricobalt Carbide Evolves through Fischer–Tropsch Intermediates 😀 pubs.acs.org/jacsat/artic... @acsjacs.bsky.social #crystallography #Education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 25/08/2026
🎉Congrats to Ivan from Betley group #HarvardCCB 🔬[Fe3(μ3–Me)]−/0 Clusters: Masking a Methyl Radical 😀 pubs.acs.org/jacsat/artic... @jacs.acspublications.org #crystallography #education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 17/08/2026
Really enjoyed Regine’s talk: “Problem Structures: Disaster or Highlight” 🔬✨ Challenging structures can sometimes become the most rewarding problems in crystallography! 😀 @iucr2026.bsky.social #StructuralScience #Crystallography #Education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 13/08/2026
📢 Proud to share how we’re making #Crystallography accessible to #Graduate, #Undergraduate & #K12 students, building community impact and inspiring the next generation of scientists! 🔬✨ doi.org/10.1107/S160... @iucr2026.bsky.social @acastructuralsci.bsky.social #StructuralScience #Education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 31/07/2026
📚💎 Introducing #crystallography at the #kindergarten level! 🔬✨ A center-based activity framework and a children's book to introduce crystallography to young learners 👧👦🌈 doi.org/10.1107/S205... @actacryste.iucr.org #IUCr #Crystallography #STEM #ScienceOutreach
doi.org
A model for crystallography engagement with children in early elementary school with activities and book development
Introducing crystallography at the kindergarten level is discussed through a center-based activity framework and the development of a children's book for crystallography.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 28/07/2026
🥳Honored to present our #crystallography #outreach efforts @bcce2026.bsky.social! It was wonderful to share how hands-on crystallography at Harvard inspires #undergraduate & #HighSchool students to pursue #STEM 😀 #StructuralScience #Education #ACSDivCHED
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 01/07/2026
🧪🔬 Accessible, beginner-friendly dry-lab exercises introduce #undergraduates to crystallographic databases @ccdc.cam.ac.uk and small-molecule structure analysis! 📚✨ doi.org/10.1107/S205... @actacryste.iucr.org #Crystallography #Undergraduate #ChemEd #Education
doi.org
Accessible introductory exercises to crystallography databases and basic practices for undergraduate students
The description and commentary for a set of simple exercises intended for undergraduate learners. These exercises introduce some basic practices for handling and reporting crystallographic data of sma...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 16/06/2026
Light on Again🥳-- Yes, we can observe the #photocrystallography result after 390 nm excitation 😀 #IUCr #crystallography #education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 12/06/2026
🎉 Congratulations to the #Undergrads on their new publication from #Chem145: Structural, redox, and excited-state properties of a suite of meso-fluorinated phenyl Zn porphyrins😀 doi.org/10.1016/j.in... #Chemistry #Crystallography #STEM #Education #UndergradResearch
doi.org
Redirecting
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 30/05/2026
🔬📐 Explore #symmetry with the Jmol Space Group symmetry Visualizer! With an intuitive web interface, it provides accessible resources for #teaching & #learning. 🎓💎 doi.org/10.1107/S205... @actacrystc.iucr.org #IUCr #Crystallography #Chemistry #Education #STEM #PlaneGroup #SpaceGroup
doi.org
Visualizing and teaching crystallographic symm­etry using Jmol
The Jmol Space Group Symmetry Visualizer (https://spacegroups.symotter.org) is an online resource for the visualization of crystallographic symm­etry built around the versatile Jmol application and re...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 16/05/2026
🥳🥳 Excited to see our #crystallography #education & #outreach paper ranked as #TopViewedArticle in 2025 @wiley.com! Grateful for the support from #IUCr and the community. 🙌🔬✨ doi.org/10.1107/S160... @japplcryst.iucr.org #STEM #StructureScience #graduates #undergrads #K12 #Teaching @harvard.edu
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 14/05/2026
📢 Excited to share how we’re making #Crystallography @harvard.edu accessible to #Undergrads & #K12, inspiring the next generation through hands-on #StructuralScience #Education & #Outreach!🔬✨ Grateful for the support #ACSDivCHED @bcce2026.bsky.social 😀😀 #IUCr #ChemEd #STEMTeachers #TeacherPD
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 20/04/2026
"CrystalX marks the beginning of a new era of automating #routine structural analysis within self-driving laboratories." 😀🤔 pubs.acs.org/doi/10.1021/... #IUCr #crystallography #education
pubs.acs.org
CrystalX: High-Accuracy Crystal Structure Analysis Using Deep Learning
Atomic structure analysis of crystalline materials is a paramount endeavor in both chemical and material sciences. This sophisticated technique necessitates not only a solid foundation in crystallography but also a profound comprehension of the intricacies of the accompanying software, posing a significant challenge in meeting rigorous daily demands. For the first time, we confront this challenge head-on by harnessing the power of deep learning for fully automated routine structure analysis at the full-atom level. To validate the performance of the model, named CrystalX, we employed a data set comprising over 50,000 X-ray diffraction measurements derived from authentic experiments. Under a strict temporal validation scheme that separates training and test data by publication time, CrystalX substantially outperformed the automated baseline and was adept at deciphering intricate geometric patterns. Remarkably, CrystalX revealed that even peer-reviewed publications harbor expert interpretation errors that can evade stringent CheckCIF A/B-level alerts, yet CrystalX adeptly rectifies them. It has already been successfully applied in our day-to-day pipeline, enabling fully automated, human-free structure analysis of newly discovered compounds. Overall, CrystalX marks the beginning of a new era of automating routine structural analysis within self-driving laboratories.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 10/04/2026
📢"crystallography training should not only cover how to operate advanced X-ray diffractometers, but also the fundamental #concepts underlying the applied #protocols" 😀😀 doi.org/10.1107/S205... @actacryste.iucr.org #IUCr #crystallography #education
doi.org
Revisiting symbolic addition: a step-by-step introduction to manual direct methods
The conceptual basis of modern direct methods software, used in crystal structure determination, is demonstrated using the manual symbolic addition method with three fully worked two-dimensional examples.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 03/04/2026
📢"Crystallography, being ubiquitous in many areas of daily life, deserves special attention in education." 😀✨Introducing it to high school students helps build skills for modern science, technology, and innovation. pubs.acs.org/doi/10.1021/... @pubs.acs.org #crystallography #education #K12 #outreach
pubs.acs.org
Modern Chemistry Teaching. Part 1. Geometrical Crystallography at High School during Chemistry Lessons and Clubs
Crystallography plays an important role in the development of many fields of science and technology. Its importance is reflected in the numerous Nobel Prizes awarded for achievements in this area. Cry...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 26/03/2026
📢 Join our #Chem255 Mini-Workshop! Learn #InHouse Variable-Temperature #PXRD data collection, indexing & #StructureRefinement using #TOPAS, led by Faith Chen #MasonGoup #HarvardCCB, 2025 #LudoFrevelScholar @icdd.bsky.social 😀😀 doi.org/10.1021/jacs... #Crystallography #education #PeerTutoring
doi.org
Manipulating Hydrocarbon Chain-Melting Transitions in Dialkylammonium Halide Barocaloric Materials through Desymmetrization
Layered materials containing hydrocarbon bilayers capable of transitioning between an ordered and partially disordered state can exhibit large temperature and entropy changes─termed barocaloric effect...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 06/03/2026
Discussing #StructureSolution in Chem255, highlighting one of the key contributions of Isabella Karle: helping turn #DirectMethods into a practical tool for solving #CrystalStructures #IUCr 🔬 pubs.acs.org/doi/10.1021/... @pubs.acs.org #Crystallography #Education
pubs.acs.org
The Posthumous Nobel Prize in Chemistry. Volume 2. Ladies in Waiting for the Nobel Prize
Isabella Karle’s greatest contribution to crystallography was delivering the first experimental proofs that the mathematics developed by her husband Jerome Karle in tandem with Herbert Hauptman were, ...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 03/02/2026
📢What makes a crystallography workshop truly successful? 🧐 Key insights on planning, teaching, and hands-on learning: 💎🧪 doi.org/10.1107/S205... @actacryste.iucr.org #crystallography #education
doi.org
Crystallographic workshops – a primer and perspective from Whitworth University's Summer Crystallography Institute
Whitworth University's recent Summer Crystallography Institutes offer important insights into training and engaging the next generation of structural scientists in a workshop setting.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 30/01/2026
📢 This approach provides "an intuitive framework for developing a #ConceptualUnderstanding between the structure factors and atomic arrangement in crystalline materials."😀 doi.org/10.1107/S205... @actacryste.iucr.org #crystallography #education
doi.org
Graphical Fourier-coefficient analysis as a paper-based method for teaching structure factors
A one-dimensional graphical Fourier analysis is proposed as a teaching approach to visualize the cosine and sine coefficients of structure factors and to provide a visual illustration of the relations...
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Reposted by Shao-Liang Zheng
Helen MC @crystallised-cricket.com · 23/01/2026
Are you a #Crystallographer and thinking about going to @iucr2026.bsky.social? Do you have a project/idea/discussion point about Crystallography outreach? Then submit an abstract by 15th Feb to MS15 'Engaging all with crystallography' event.fourwaves.com/iucr-2026/sc...
event.fourwaves.com
Twenty-Seventh Congress and General Assembly of the International Union of Crystallography
Join Twenty-Seventh Congress and General Assembly of the International Union of Crystallography, August 11, 2026. Learn more on Fourwaves.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 17/01/2026
📢Transforming #misconceptions into #teaching tools unlocks powerful learning opportunities and supports talent development 📘🌟 doi.org/10.1107/S160... @japplcryst.iucr.org #crystallography #education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 16/01/2026
🎉Congrats to Jeewhan from Betley group #HarvardCCB 🔬In the ferrous state, (EmL)Fe(OH) shows nucleophilic reactivity toward carbon-based electrophiles, including reversible #CO2capture characterized by #SCXRD 😀 doi.org/10.1021/jacs... @jacs.acspublications.org #crystallography #education
doi.org
Manipulating Terminal Iron-Hydroxide Nucleophilicity through Redox
We report changes in the reactivity profile of a high-spin, terminal ferrous hydroxo complex (EmL)Fe(OH) as a function of oxidation states (i.e., FeII/FeIII). The terminal, high-spin Fe–OH adducts wer...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 11/01/2026
😱"Notably, despite crystallizing in achiral point groups (-1 and 2/m), the crystals exhibit optical activity"? 😳 That’s not consistent with basic crystallographic #symmetry. 🤔 doi.org/10.1002/adma... #IUCr #crystallography #education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 22/12/2025
📢Proud to share our journey in #crystallography #education for #undergraduate #graduate: Understanding why a certain #symmetry was selected & learning to challenge our assumptions is key to inspiring the next generation of chemical crystallographers🙂 iucr.org/news/newslet... doi.org/10.1021/acs....
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 16/12/2025
🔍 "Careful observation, critical analysis, and the ability to navigate complexity are skills that automation cannot replicate...Ultimately, it is human curiosity and judgment that turn data into genuine understanding" 🥳 🥳 www.iucr.org/news/newslet... #crystallography #education #SpaceGroupChoice 🧠✨
iucr.org
(IUCr) articles
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 16/12/2025
📌 A crucial reminder: "numerous textbooks perpetuate a persistent #misconception by equating #CrystalSystems with prescribed #UnitCellParameters rather than their authentic determinant— #SymmetryOperations" 😀 doi.org/10.1107/S160... @japplcryst.iucr.org #crystallography #education
doi.org
From symmetry operations to dimensional restrictions: a mathematical formalization of unit-cell constraints for the seven crystal systems in crystallography
This study establishes a mathematical framework connecting symmetry operations with metrical restrictions through systematic analysis of symmetry operation representation matrices.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 11/12/2025
🚀 A new class of ortho-palladated oxazolone complexes that capture and release solar energy via visible-light-triggered [2+2] photocycloaddition 🌞✨ doi.org/10.1039/D5SC... @gracegdhan.bsky.social @chemicalscience.rsc.org #crystallography #education
doi.org
Visible Photon Energy Storage by [2+2] Cycloaddition of Pd-Oxazolones
We report a new class of ortho-palladated oxazolone complexes that capture and release solar energy through visible-light-triggered [2+2] photocycloaddition reactions. The free oxazolone ligands weakl...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 02/12/2025
🚀 Learning crystallography by doing: "Students begin solving and refining structures early in the course, following a ‘do first, understand second' philosophy." doi.org/10.1107/S205... 😀 @actacryste.iucr.org #crystallography #education
doi.org
Practical aspects of teaching a graduate-level small-mol­ecule chemical crystallography course
We share our pedagogical vision for a graduate-level small-mol­ecule chemical crystallography in-class exercises and list our preferred textbooks, computer programs, and websites.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 28/11/2025
A new paper-based approach for teaching Bragg's law 😀😀 doi.org/10.1107/S205... @actacryste.iucr.org #IUCr #crystallography #education #K12 #outreach
doi.org
A new paper-based approach for teaching Bragg's law
A paper-based virtual X-ray diffraction experiment, which is based on the right-angle condition for constructive inter­ference, allows the implications of Bragg's law to be studies in a simple way.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 18/11/2025
🎉 Congrats to Daniel & Vidhya from Mason group @HarvardCCB! Their study reveals how everyday detergent molecules can serve as the #foundation for solid-state #PhaseChange. 🥳🥳 www.cell.com/chem/fulltex... #crystallography
cell.com
Tunable thermal phase-change materials from common detergents
Here, we evaluate halide-free phase-change materials built from common surfactants for solid-state temperature regulation. Considering these and other phase-change materials, we illustrate how their s...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 08/11/2025
📢 Proud to share how we’re making #crystallography at Harvard accessible to #graduates, #undergrads & #K12, inspiring our next generation! #ACS #NERD2025 🥳🥳 doi.org/10.1107/S160... #ScienceEducation #StructuralScience #ChemistryEducation
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 05/11/2025
🎉 Proud to highlight core philosophy: To serve, to educate, to enable! Sharing crystallography and education resources at the HMS Core Facilities Poster Showcase. 👉 corefacilities.hms.harvard.edu/2025-harvard... 😀 #Crystallography #Education #Research #CoreFacilities
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 15/10/2025
Congrats to Lisa & Ivan #BetleyGroup #HarvardCCB 🎉 The open-shell triiron #hydride cluster shows hydride-transfer reactivity toward isocyanides, alkynes & aldehydes. 😀😀 pubs.acs.org/doi/full/10.... @pubs.acs.org #crystallography #education
pubs.acs.org
Hydride Transfer Reactivity of an Open-Shell [Fe3H]− Cluster
We report herein the synthesis and reactivity of the high-spin iron-hydride cluster [K(C222)][(tbsL)Fe3(μ3–H)]. Direct hydride transfer reaction attempts led to cluster reduction to afford the anionic...
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 10/10/2025
📢Exciting news @actacryste.iucr.org: The new #Education and #Outreach section highlights creative #teaching and engagement efforts advancing #crystallography worldwide 😀😀 iucr.org/news/newslet... #StructuralScience
iucr.org
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 04/10/2025
A nice #Olex2 feature on serial refinement in #SmallMolecule #diffraction 😀😀 doi.org/10.1063/4.00... #ResonantDiffraction #crystallography #education
doi.org
SISYPHOS: An automatic procedure for the serial refinement of single-crystal diffraction data in Olex2
A program for serial handling of crystallographic data is presented within Olex2. Especially for small molecule electron and x-ray diffraction, the handling of
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 27/09/2025
📢 Join us for #Chem255 @harvard.edu next spring youtube.com/watch?v=Tbqh... 🥳🥳 #crystallography #undergraduate #graduate #education
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 14/09/2025
A great approach: "analysis of #CrystalStructures in science classes at #HighSchools offers a wide range of opportunities for illustrating and improving understanding of fundamental #StructuralChemistry concepts"😀 doi.org/10.1107/S160... @japplcryst.iucr.org #K12 #crystallography #Education
doi.org
Crystallography in school
Preconditions and applications for teaching crystallography in high school chemistry classes are presented.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 09/09/2025
Sean shares a strategy for handling unusual #WeightingSchemes sometimes encountered in #StructureRefinements with #SHELXL 🥳🥳 doi.org/10.1107/S205... @actacryste.iucr.org #crystallography #education
doi.org
A remedy for unusual SHELXL weighting schemes
A remedy for unusual weighting schemes sometimes encountered in structure refinements with SHELXL is presented, along with a worked example.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 09/09/2025
Richard describes #CrystalGrowth for X-ray #diffraction, a cornerstone of hands-on learning in #StructuralChemistry. 🥳🥳 doi.org/10.1107/S205... @actacryste.iucr.org #crystallography #education
doi.org
Getting crystals your crystallographer will treasure: a beginner's guide
Review of crystal growth properties and techniques for generating a crystal for single crystal X-ray structure analysis.
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Shao-Liang Zheng @shaoliangzheng.bsky.social · 09/09/2025
Dilek, Meghan & Christina present a new instructional #module designed to inspire #undergraduates in #chemistry and #StructuralScience🥳🥳 doi.org/10.1107/S205... @actacryste.iucr.org #crystallography #education
doi.org
From crystal structure to 3D printing to virtual reality in the classroom
A pedagogical approach to teaching structural chemistry is introduced. This new methodology involves obtaining crystal structures from crystal structure databases, 3D printing models of molecules, and...
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