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Start Over Descriptor "tris(oxalato)metallate" Topic 02 engineering and technology
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1. First Molecular Superconductor with the Tris(Oxalato)Aluminate Anion, β″-(BEDT-TTF)4(H3O)Al(C2O4)3·C6H5Br, and Isostructural Tris(Oxalato)Cobaltate and Tris(Oxalato)Ruthenate Radical Cation Salts

Author

Yasuhiro Nakazawa, Shusaku Imajo, Toby J. Blundell, Hiroki Akutsu, Michael Brannan, Lee Martin, and Joey Mburu-Newman

Subjects
Tris, Chemistry, Aluminate, Metal ions in aqueous solution, 02 engineering and technology, Crystal structure, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Paramagnetism, Crystallography, chemistry.chemical_compound, Metallate, Radical ion, Chemistry (miscellaneous), Materials Chemistry, Isostructural, 0210 nano-technology, molecular conductor, superconductor, metal, semiconductor, BEDT-TTF, tris(oxalato)metallate
Abstract

Peter Day’s research group reported the first molecular superconductor containing paramagnetic metal ions in 1995, β″-(BEDT-TTF)4(H3O)Fe(C2O4)3·C6H5CN. Subsequent research has produced a multitude of BEDT-TTF-tris(oxalato)metallate salts with a variety of structures and properties, including 32 superconductors to date. We present here the synthesis, crystal structure, and conducting properties of the newest additions to the Day series including the first superconductor incorporating the diamagnetic tris(oxalato)aluminate anion, β″-(BEDT-TTF)4(H3O)Al(C2O4)3·C6H5Br, which has a superconducting Tc of ~2.5 K. β″-(BEDT-TTF)4(H3O)Co(C2O4)3·C6H5Br represents the first example of a β″ phase for the tris(oxalato)cobaltate anion, but this salt does not show superconductivity.

Published
2021
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