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Magnetic Interaction in Dinuclear Triphos−Cobalt Complexes with Co···Co Separations of 8 and 10 Å
Author(s) -
Heinze Katja,
Huttner Gottfried,
Schober Peter
Publication year - 1998
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/(sici)1099-0682(199802)1998:2<183::aid-ejic183>3.0.co;2-p
Subject(s) - triphos , chemistry , cobalt , terephthalic acid , ligand (biochemistry) , bridging ligand , crystallography , stereochemistry , metal , tris , crystal structure , inorganic chemistry , organic chemistry , biochemistry , receptor , polyester
Weak antiferromagnetic exchange interactions are observed in two Co II dimers of the general formula [{(triphos)Co} 2 ( μ ‐dicarboxylato)](BF 4 ) 2 where the dicarboxylate is the dianion of fumaric acid [ 3 · (BF 4 ) 2 ] or terephthalic acid [ 4 · (BF 4 ) 2 ] and triphos is the tridentate phosphorus ligand 1,1,1‐tris(diphenylphosphanomethyl)ethane. In these complexes the metal ions are separated by 8 and 10 Å, as determined by X‐ray crystallography. Insight into the interaction pathway is gained through molecular orbital calculations performed on model compounds. The influence of bridging‐ligand distortions and the stereochemistry around the two cobalt centres is discussed.