The Myth of Cyanide Always Being a Strong‐Field Ligand: Synthesis and Structural Characterization of Homoleptic  S =2 Pentacyanochromate( II ), [Cr II (CN) 5 ] 3− , and Nonacyanodichromate( II ), [ ${{\rm Cr}{{{\rm II}\hfill \atop 2\hfill}}}$ (CN) 9 ] 5− | Zendy

Nelson Kendric J. | Zendy; Giles Ian D. | Zendy; Shum William W. | Zendy; Arif Atta M. | Zendy; Miller Joel S. | Zendy

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The Myth of Cyanide Always Being a Strong‐Field Ligand: Synthesis and Structural Characterization of Homoleptic S =2 Pentacyanochromate( II ), [Cr II (CN) 5 ] 3− , and Nonacyanodichromate( II ), [ ${{\rm Cr}{{{\rm II}\hfill \atop 2\hfill}}}$ (CN) 9 ] 5−

Author(s) -

Nelson Kendric J.,

Giles Ian D.,

Shum William W.,

Arif Atta M.,

Miller Joel S.

Publication year - 2005

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.200462763

Subject(s) - homoleptic , cyanide , characterization (materials science) , ligand (biochemistry) , chemistry , field (mathematics) , ligand field theory , nanotechnology , inorganic chemistry , materials science , ion , metal , mathematics , organic chemistry , biochemistry , receptor , pure mathematics

Weak‐field cyanide : [Cr II (CN) 5 ] 3− ( 1 ) is formed upon reaction of excess NEt 4 CN with ${{{\rm {\rm Cr}}{{{\rm {\rm II}}\hfill \atop 2\hfill}}}}$ (OAc) 4 and has been structurally characterized. With a stoichiometric amount of CN − , [ ${{{\rm {\rm Cr}}{{{\rm {\rm II}}\hfill \atop 2\hfill}}}}$ (CN) 9 ] 5− was isolated. [Cr II (CN) 5 ] 3− has an S =2 ground state, a high spin state for a homoleptic metallocyanide, and offers a new building block to develop molecule‐based magnets.

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