10th European Conference on Molecular Magnetism, Copenhagen

Molecular frameworks featuring perovskite-related topologies rarely exhibit strong magnetic correlations and high-temperature magnetic order. Now it has been shown that the cubic molecular framework C...

Incorporating 4d and 5d metal ions into coordination frameworks offers a powerful route to quantum materials where orbital delocalization and spin–orbit coupling reshape magnetic and electronic ground states. However, such systems remain difficult to access synthetically. Here we report Mo(pyz)2I2, the first pyrazine-bridged square-lattice framework featuring a paramagnetic 4d metal center, obtained using a new organometallic precursor route that enables Mo incorporation. Structural and spectroscopic data establish a MoIII({pyz2}•–)I2 formulation and reveal pronounced ligand redox non-innocence accompanied by local symmetry breaking arising from a disordered distribution of neutral and reduced pyrazine linkers─the first experimental observation of local symmetry lowering in a pyrazine-based coordination solid. Magnetic measurements show strong antiferromagnetic interactions without clear evidence of long-range order, and electrical transport indicates narrow-gap semiconducting behavior. Extending pyrazine framework chemistry to the 4d block thus requires new synthetic strategies and reveals new local structural and magnetic degrees of freedom, positioning Mo(pyz)2I2 as a prototype for designing correlated and spin–orbit-entangled states in molecule-based quantum materials based on heavier transition metals.

Incorporating 4d and 5d metal ions into coordination frameworks offers a powerful route to quantum materials where orbital delocalization and spin–orbit coupling reshape magnetic and electronic ground...

Molecule-based analogues of perovskites hold promise for emergent electronic and magnetic phenomena, yet examples with sufficiently strong correlations remain elusive. We report the synthesis of Cr(py...

PhD scholarship in switchable f-block–organic framework materials. The PhD project will focus on the design, synthesis, and characterization of new types of metal-organic network structures, which inc...

Engineering van der Waals (vdW) crystals leverages control of the confinement and transport of charge, spin, and heat in 2D atomic layers. This study introduces a new function by altering valence stat...

Valence tautomerism in molecule-based f-block materials remains virtually elusive. As a result, the effects driving and controlling the valence conversion phenomenon are poorly understood. Herein, we ...

The Technical University of Denmark (DTU) offers the opportunity to build a research group in advanced and applied chemistry at an internationally esteemed department with an excellent infrastructure.

Application deadline: 5 Marts 2025 at 23:59 hours local Danish time

Coordination networks based on lanthanide ions entangle collective magnetic phenomena, otherwise only observed in inorganic 4f materials, and the tunable spatial and electronic structure engineering i...