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Pyridine as an C ‐Orthometalated and σ‐ N ‐Complexed Heteroarene Ligand on the Surface of a Co 3 Cluster
Author(s) -
Schneider JöRg J.
Publication year - 1995
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19951280318
Subject(s) - chemistry , pyridine , ligand (biochemistry) , yield (engineering) , cluster (spacecraft) , cobalt , potassium , stereochemistry , crystal structure , medicinal chemistry , crystallography , inorganic chemistry , organic chemistry , receptor , biochemistry , materials science , computer science , metallurgy , programming language
Reaction of [(η 5 ‐Cp*)(acac‐ O ,O′)Co] ( 1 ) with potassium metal in pyridine results in reductive ligand transfer of the acac ligand to potassium and formation of a mixture of two organocobalt complexes which can be separated from each other by chromatography. Besides a mononuclear complex containing no pyridine unit the trinuclear cobalt cluster [{(η 5 ‐Cp*)‐Co} 3 ‐μ‐pyridine] ( 3 ) is formed in a cyclometalation reaction in 57% yield. The pyridine ligand in 3 is located on one edge of the Co 3 core according to the spectroscopic data and a preliminary X‐ray crystal structure analysis.