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Cover Picture: Cyanide: A Strong‐Field Ligand for Ferrohemes and Hemoproteins? (Angew. Chem. Int. Ed. 52/2008)
Author(s) -
Li Jianfeng,
Lord Richard L.,
Noll Bruce C.,
Baik MuHyun,
Schulz Charles E.,
Scheidt W. Robert
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200890273
Subject(s) - cyanide , ligand (biochemistry) , ligand field theory , chemistry , cover (algebra) , mössbauer spectroscopy , crystallography , hemeprotein , spin (aerodynamics) , spectroscopy , spin states , inorganic chemistry , heme , physics , organic chemistry , ion , receptor , mechanical engineering , biochemistry , enzyme , engineering , thermodynamics , quantum mechanics
Low‐spin to high‐spin transition is observed for an iron(II) porphyrinate complex with an axial cyanide ligand, as reported by W. R. Scheidt and co‐workers in their Communication on page 10144 ff. As demonstrated by temperature‐dependent magnetic measurements, Mössbauer spectroscopy, and X‐ray crystallographic analysis, coordination of a single axial cyanide ligand does not generate a sufficiently strong ligand field to ensure a low‐spin complex under all conditions.