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Structure and Electronic Properties of [Ni(dsdm){Fe(CO) 3 } 2 ], an Unusual, Triangular Nickel Diiron Compound
Author(s) -
Chalbot MarieCécile,
Mills Allison M.,
Spek Anthony L.,
Long Gary J.,
Bouwman Elisabeth
Publication year - 2003
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200390064
Subject(s) - chemistry , diamagnetism , octahedron , nickel , crystallography , mössbauer spectroscopy , cluster (spacecraft) , quadrupole , metal , quadrupole splitting , crystal structure , atomic physics , physics , organic chemistry , quantum mechanics , magnetic field , computer science , programming language
Reaction of the low‐spin complex [Ni(dsdm)] with Fe 2 CO 9 results in the unique trinuclear cluster [Ni(dsdm){Fe(CO) 3 } 2 ]. NMR spectroscopy shows that the structure is diamagnetic, and, moreover, that the complex is stable in solution and C 2 ‐symmetric. The X‐ray structure reveals short distances between the distorted octahedral nickel( II ) ion and the two octahedral iron(0) centers. The observed diamagnetism is explained by the formation of a triangular metal core with three two‐electron two‐center bonds. The Mössbauer spectra, which are typical of iron(0), are composed of asymmetric quadrupole doublets as a result of the presence of two chemically similar, but crystallographically distinct, iron sites. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)