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Robert J. Gilliard, Jr.

@rjgilliard.bsky.social
1.4K followers 227 following 48 posts

Chemistry Professor @MITofficial.bsky.social | Team: @gilliardgroup.bsky.social | Main-Group Chemistry | Organometallics | Luminescent Organic Materials | Photophysics | Website: gilliardlab.mit.edu

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Reposted by Robert J. Gilliard, Jr.
Gilliard Group @gilliardgroup.bsky.social · 09/09/2026
Chunlin's paper on how "Hybrid Benzimidazole–Imidazole Carbodicarbene Ligands Control Deep-Red Emission from Photostable Borenium Ions" is out now in JACS! Check it out! pubs.acs.org/jacsat/artic... #maingroup @jacs.acspublications.org @pubs.acs.org @acs.org
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Reposted by Robert J. Gilliard, Jr.
Gilliard Group @gilliardgroup.bsky.social · 18/08/2026
Check out Noah's new paper on Carbene-Stabilized Cyanogen N-Oxide, out now in @jacs.acspublications.org (pubs.acs.org/jacsat/artic...)!
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Reposted by Robert J. Gilliard, Jr.
Gilliard Group @gilliardgroup.bsky.social · 25/07/2026
Check out Chonghe's new paper in @jacs.acspublications.org! Diazoborane-Promoted Boron Insertion into Olefinic C–H Bonds | pubs.acs.org/jacsat/artic...
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 19/06/2026
It was a pleasure to welcome Eric Mills and the ACS on Campus team to @mit.edu for a trainee-focused event that covered publishing and careers! Joined Laura Kiessling and Rory Waterman for a session on faculty positions. @acs.org @jacs.acspublications.org @pubs.acs.org @laurakiessling.bsky.social
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Reposted by Robert J. Gilliard, Jr.
Boron Chemistry @boron-chemistry.bsky.social · 30/04/2026
Reactions of diazoboranes with oxygen enables the synthesis and isolation of dioxaboriranes ( @rjgilliard.bsky.social , @gilliardgroup.bsky.social ): www.nature.com/articles/s41... ( @natchem.nature.com ).
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Reposted by Robert J. Gilliard, Jr.
Gilliard Group @gilliardgroup.bsky.social · 24/04/2026
Check out this awesome paper by Colleen and coworkers on the redox activity and near-infrared optical properties of doubly boron-doped indenofluorenes (DBIF), now out in @jacs.acspublications.org (pubs.acs.org/doi/10.1021/...)!
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Reposted by Robert J. Gilliard, Jr.
Gilliard Group @gilliardgroup.bsky.social · 24/04/2026
The latest from the Gilliard and Cummins Labs....on the synthesis and reactivity of dioxaboriranes is now online in @natchem.nature.com (www.nature.com/articles/s41...)! Chonghe synthesized a series of unusual boron-O2 compounds, formed by N2 exchange from diazoboranes! @gilliardgroup.bsky.social
nature.com
Reactions of diazoboranes with oxygen enables the synthesis and isolation of dioxaboriranes - Nature Chemistry
Cyclic peroxides are highly reactive oxygen-containing species that play important roles in chemical synthesis. Now, the reaction between diazoboranes and triplet oxygen affords a family of cyclic dio...
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 26/02/2026
Our manuscript on the redox- and protonation-chemistry of diboraheptacenes is published in @jacs.acspublications.org (pubs.acs.org/doi/full/10....)! @JinhyoHwang and @chemheechan report a DBH dianion (w/NIR absorption) that’s the longest fully conjugated boron-doped acene! #maingroup
pubs.acs.org
Redox- and Protonation-Tunable Diboraheptacenes
Acenes are attractive molecular platforms with characteristic π-electron delocalization, resulting in exceptionally small HOMO–LUMO gaps, which makes them valuable for use in a variety of organic elec...
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Reposted by Robert J. Gilliard, Jr.
Gilliard Group @gilliardgroup.bsky.social · 21/02/2026
Check out Nathan's article in @jacs.acspublications.org on luminescent and stimuli-responsive borenium ion materials! #maingroup pubs.acs.org/doi/10.1021/...
pubs.acs.org
Borenium Ions as Functional Materials
Borenium ions are tricoordinate boron cations of the type [LBR2]+, where L is a donor ligand. While the inherently reactive nature of these Lewis acidic species has been harnessed to advance bond acti...
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 15/02/2026
Our research on fluorescent digermanium- and diboron-doped hexacene derivatives is now published in Chemical Science (pubs.rsc.org/en/content/a...)! Heechan and the Romero-Nieto Group unveil Ge-B exchange as a method to obtain boron-doped extended acenes! #maingroup @chemicalscience.rsc.org
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 06/10/2025
Our manuscript introducing ion-pair assembly in CDC-borenium ions as a method to unlock red to near-infrared luminescence is now published in Nature Chemistry (www.nature.com/articles/s41...)! Chunlin shows that counteranion modulation directs solid-state emission! #maingroup @natchem.nature.com
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 26/09/2025
Our manuscript detailing the impact of carbene ligands on the synthesis, properties, and reactivity of 8 diazoboranes is now published in JACS (pubs.acs.org/doi/10.1021/...)! Take a look at the unusual boraketenes and diazaborles! #maingroup #boron @jacs.acspublications.org
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 05/09/2025
Our manuscript on the first isolable paramagnetic boron tetraradical is now online @jacs.acspublications.org (pubs.acs.org/doi/full/10....)! @heechankim.bsky.social designed and synthesized an unusual B-PAH tetraradical with tetraphenylethene-linked boraphenanthrene-type units! #maingroup
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 27/08/2025
Our manuscript on harnessing substituent and aggregation-induced effects for color-tunable emission in CDP-borafluorenium ions is now published in the Journal of Materials Chemistry C (pubs.rsc.org/en/content/a...)! #maingroup @nathanfrey.bsky.social @gilliardgroup.bsky.social @jmaterchem.rsc.org
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Reposted by Robert J. Gilliard, Jr.
Gilliard Group @gilliardgroup.bsky.social · 15/08/2025
After our 2025 Research Retreat where we discussed our research plans for the academic year, we had a nice dinner at Lucca in Boston!
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Reposted by Robert J. Gilliard, Jr.
CCDC Cambridge @ccdc.cam.ac.uk · 04/07/2025
From @heechankim.bsky.social @rjgilliard.bsky.social a range of boron helices @jacs.acspublications.org. This double-stranded diborahelicate could be transformed into luminescent borahelicates and cationic boron coordination complexes. 🔗 CSD Entry CABXAJ: bit.ly/46xskm6 #FeaturedStructureFriday
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Reposted by Robert J. Gilliard, Jr.
John Protasiewicz @drp-phosphorus.bsky.social · 28/06/2025
Had a great visit from my former postdoc @rjgilliard.bsky.social this week! Good to introduce him to some other program officers as well.
Professors Robert Gilliard and John Protasiewicz standing in front of NSF headquarters building.
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Reposted by Robert J. Gilliard, Jr.
Todd Hudnall @drtoddhudnall.bsky.social · 25/06/2025
The Hudnall lab is hiring a Postdoctoral Fellow! Applicants excited about joining our recently relocated research group and interested in the synthesis of exotic main-group molecules, materials and heterodiatomics can email Dr. Hudnall directly. Please share!
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 19/06/2025
We are very grateful to the @acs.org ACS Petroleum Research Fund for supporting a New Directions project on "Applying Thermodynamic and Kinetic Metrics to Main Group-Mediated CO2 Utilization Electrocatalyst Discovery," led by @gilliardgroup.bsky.social postdoc Noah McMillion!
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 18/06/2025
Our manuscript on cationic double-stranded diborahelicates and borahelicenes is now published in JACS @jacs.acspublications.org (pubs.acs.org/doi/10.1021/...)! Heechan reports borahelices with multicolor emission and high absorption dissymmetry factors! @gilliardgroup.bsky.social #maingroup
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 10/06/2025
Our manuscript on unlocking the ambiphilicity of boryl anions is now published in JACS @jacs.acspublications.org (pubs.acs.org/doi/full/10....)! Chonghe, Junyi, Xibao, and coworkers report the synthesis and reactivity of the first anionic diazoborane! #maingroup #boron @gilliardgroup.bsky.social
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Reposted by Robert J. Gilliard, Jr.
Chemical Science @chemicalscience.rsc.org · 04/06/2025
This week's #ChemSciPicks comes from Robert J Gilliard and Christopher Cummins (Massachusetts Institute of Technology, United States). The authors use the elimination of hexamethylbenzene to form transient boron-containing unsaturated bonds. Read it free here: doi.org/10.1039/D5SC... #ChemSky
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 28/05/2025
Congratulations to the @gilliardgroup.bsky.social members graduating from MIT @mit.edu! Proud of you and what you have accomplished!
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 21/05/2025
Our (Gilliard/Cummins labs) manuscript on the generation of transient, sterically unhindered multiply bonded boron species is now published in @chemicalscience.rsc.org! Chonghe reports an array of new boron heterocycles! #maingroup pubs.rsc.org/en/content/a...
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 21/05/2025
Our manuscript on the first diboron-incorporated indenofluorenes is online in @jacs.acspublications.org! Eric and coworkers report pentacyclic neutral, diradical, radical anion, and dianion ring systems w/18, 20, 21, and 22π electrons! #maingroup #boron #paramagnetic pubs.acs.org/doi/full/10....
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 15/05/2025
Our manuscript on "Borinine-FLP Ring Expansion: Isolation of Eight-Membered B–P Rings Bridged by µ2 Chalcogenide and Chloronium Ions" is now published in @chemicalscience.rsc.org! @nathanfrey.bsky.social @gilliardgroup.bsky.social #maingroup
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Reposted by Robert J. Gilliard, Jr.
Boron Chemistry @boron-chemistry.bsky.social · 12/05/2025
Borinine-FLP Ring Expansion: Isolation of Eight-Membered B–P Rings Bridged by µ2 Chalcogenide and Chloronium Ions (@rjgilliard.bsky.social, @gilliardgroup.bsky.social): pubs.rsc.org/en/content/a... (@chemicalscience.rsc.org).
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 24/04/2025
Congratulations to Bi Youan Eric Tra on an excellent PhD Defense @mitchemistry.bsky.social and a thesis packed with X-ray crystal structures of novel boron heterocycles! Stay tuned for his next paper soon! @gilliardgroup.bsky.social
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Reposted by Robert J. Gilliard, Jr.
Kelsie Wentz @kek-kelsie.bsky.social · 08/04/2025
I'm incredibly grateful for amazing mentors, @rjgilliard.bsky.social, @bekkaklausen.bsky.social, and Stephen Craig for their ongoing support of my academic career! I'm also so thankful to the Klausen Lab and @gilliardgroup.bsky.social for their friendship and support!
chem.indiana.edu
Kelsie Wentz :Department of Chemistry
Indiana University Bloomington
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 27/03/2025
Thank you to Prof. Junzhi Liu for hosting me at The University of Hong Kong (HKU)! Their helicene and boron PAH work is exceptional! I thoroughly enjoyed my visit, including meeting many of the faculty members and students!
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 26/03/2025
Thank you to Prof. Hairong Lyu in the Department of Chemistry, Chinese University of Hong Kong (CUHK) for inviting me and for the exceptional hospitality throughout my visit! It was great meeting many of the faculty and students.
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 26/03/2025
It was certainly an honor to be honored in Hong Kong, giving the keynote at the 31st Symposium on Chemistry Postgraduate Research! Thank you to Prof. Yangjian QUAN of HKUST for the fine hospitality! I was thrilled to see hundreds of people turn out to hear about boron chemistry!
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 19/03/2025
Our manuscript on dicationic boron derivatives of Schlenk's and Thiele's hydrocarbon is now online in JACS @pubs.acs.org! @pdabringhaus.bsky.social reports a biradical with a ground-state triplet electronic structure! pubs.acs.org/doi/full/10....
pubs.acs.org
Dicationic Boron Derivatives of Schlenk’s and Thiele’s Hydrocarbon
In recent years, neutral NHC-stabilized boryl radicals have been investigated as reactive species in various organic transformations. However, cationic boron radicals have been significantly less expl...
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 11/03/2025
Cheers and congratulations to @pdabringhaus.bsky.social who is joining the well-respected group of #maingroup chemists at Heidelberg University as an assistant professor! Very smart move on their part! We will miss you in the @gilliardgroup.bsky.social but I'm thrilled that we will meet frequently!
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Reposted by Robert J. Gilliard, Jr.
Ken Lo @bhkenlo.bsky.social · 14/02/2025
Isolation and Reactivity of Carbene-Stabilized Carbon Disulfide Radical Anions | Inorganic Chemistry pubs.acs.org/doi/10.1021/... Wilson, Machan @RJGilliard and co-workers @InorgChem #CAAC #carbene #CS2 #radical_anions
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 14/02/2025
Our manuscript on the Isolation and Reactivity of Carbene-Stabilized Carbon Disulfide Radical Anions is now published in Inorganic Chemistry! @pubs.acs.org @gilliardgroup.bsky.social pubs.acs.org/doi/full/10....
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 13/02/2025
Full professor promotion approved! Thanks to all of the @gilliardgroup.bsky.social members past and present who continue to advance our science!
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Reposted by Robert J. Gilliard, Jr.
Sarah Reisman @reiswoman.bsky.social · 11/01/2025
Thanks to those who’ve reached out the last few days. I am grateful that my family and home are safe. Many of my friends and colleagues have lost homes. If you want to help Caltech/JPL faculty/students/staff, a relief fund has been established: giving.caltech.edu/areas-to-sup...
giving.caltech.edu
The Caltech and JPL Disaster Relief Fund
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 01/01/2025
I’m pleased to be appointed as an associate editor of the Journal of the American Chemical Society @acspublications.bsky.social starting today! Looking forward to handling top-notch papers in the field!
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 30/12/2024
My time on the @angewandtechemie.bsky.social IAB has come to an end. It has been a pleasure working with the journal and being able to witness many positive developments! I look forward to continuing to read all of the fantastic #maingroup chemistry and publishing in ACIE for years to come!
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 23/12/2024
We are thrilled to receive a National Institutes of Health National Institute of General Medical Sciences R35 MIRA grant for the development of far-red and near-infrared emitting cationic boracycles as deep-tissue penetrating photoactive agents! @gilliardgroup.bsky.social
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 20/12/2024
Undergraduates - Join us for summer research at MIT!
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 18/12/2024
Redox and Charge State Dependent Trends in Boron Heterocycles: A Neutral Ligand Coordination Chemistry Approach to Boracyclic Cations, Anions, and Radicals | Accounts of Chemical Research #ouryearinreview @gilliardgroup.bsky.social #maingroup #chemsky pubs.acs.org/doi/full/10....
pubs.acs.org
Redox- and Charge-State Dependent Trends in 5, 6, and 7-Membered Boron Heterocycles: A Neutral Ligand Coordination Chemistry Approach to Boracyclic Cations, Anions, and Radicals
ConspectusBoron heterocycles represent an important subset of heteroatom-incorporated rings, attracting attention from organic, inorganic, and materials chemists. The empty pz orbital at the boron cen...
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 17/12/2024
Borafluorene-Mediated Sulfur Activation: Isolation of Boryl-Linked S7 and S8 Catenates and Related Chalcogenide Molecules | Inorganic Chemistry #ouryearinreview @gilliardgroup.bsky.social #maingroup #chemsky pubs.acs.org/doi/10.1021/...
pubs.acs.org
Borafluorene-Mediated Sulfur Activation: Isolation of Boryl-Linked S7 and S8 Catenates and Related Chalcogenide Molecules
Although the activation of elemental sulfur by main group compounds is well-documented in the literature, the products of such reactions are often heterocyclic in nature. However, the isolation and ch...
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 16/12/2024
Carbodicarbene-Stibenium Ion-Mediated Functionalization of C(sp3)−H and C(sp)−H Bonds | Angewandte Chemie #ouryearinreview @gilliardgroup.bsky.social #maingroup #chemsky @angewandtechemie.bsky.social onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Carbodicarbene‐Stibenium Ion‐Mediated Functionalization of C(sp3)−H and C(sp)−H Bonds
A Lewis acidic carbodicarbene-stibenium ion mediates C(sp3)−H and C(sp)−H bond breaking of acetonitrile and terminal alkynes in the presence of an organic base. The resulting adducts were reacted wit...
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 16/12/2024
Pleased to accept this Boron Chemistry Award on behalf of @gilliardgroup.bsky.social members past and present! Thank you to @organomimetic.bsky.social and the entire BORAM organizing committee! Looking forward to the rest of the week at UCLA!
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 13/12/2024
Pentacyclic Fused Diborepinium Ions with Carbene- and Carbone-Mediated Deep-Blue to Red Emission | Chemical Science pubs.rsc.org/en/content/a... #ouryearinreview @gilliardgroup.bsky.social #chemsky #maingroup #boron @roysocchem.bsky.social
pubs.rsc.org
Pentacyclic fused diborepinium ions with carbene- and carbone-mediated deep-blue to red emission
Designing molecules that can undergo late-stage modifications resulting in specific optical properties is useful for developing structure-function trends in materials, which ultimately advance optoele...
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 12/12/2024
NHC-Stabilized Diazoborane (the first isolated boron-terminal N2 species, a borylene transfer reagent) | Science Magazine @science.org #ouryearinreview @gilliardgroup.bsky.social #chemsky #maingroup #boron www.science.org/doi/10.1126/...
science.org
Synthesis and reactivity of an N-heterocyclic carbene–stabilized diazoborane
Diazo compounds and organic azides are widely used as reagents for accessing valuable molecules in multiple areas of fundamental and applied chemistry. Their capacity to undergo versatile chemical tra...
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 12/12/2024
The 2024 Gilliard Lab Christmas Dinner at Fogo de Chão in Boston! @gilliardgroup.bsky.social
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Robert J. Gilliard, Jr. @rjgilliard.bsky.social · 11/12/2024
Carbodiphosphorane-Activated Distibene and Dibismuthene Dications | Journal of the American Chemical Society (JACS) #ouryearinreview @gilliardgroup.bsky.social #chemsky #maingroup pubs.acs.org/doi/10.1021/...
pubs.acs.org
Carbodiphosphorane-Activated Distibene and Dibismuthene Dications
Low-valent antimony and bismuth have emerged as novel platforms for achieving reversible small-molecule activation at main-group metals. Although various examples of oxidative addition reactions at mo...
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