An unexpected chelate conformation in trans-[(R)-N,N'-bis(alpha-phenylsalicylidene)propane-1,2-diaminato(2-)]bis(1-methyl-1H-imidazole-kappaN3)cobalt(III) perchlorate.
The title compound, [Co(C29H24N2O2)(C4H6N2)2]ClO4, contains an optically active tetradentate Schiff base ligand in an equatorial plane and two 1-methylimidazole ligands at apical positions. The central N-C-C-N chelate ring of the Schiff base ligand has an envelope structure with a lambda conformation, which is different from the solution structure predicted from circular dichroism and 1H NMR spectra.
Kojima
Masaaki
M
Department of Chemistry, Faculty of Science, Okayama University, Tsushima, Okayama 700-8530, Japan. hirotsu@chem.gunma-u.ac.jp
Hirotsu
Masakazu
M
Nakajima
Kiyohiko
K
Kashino
Setsuo
S
Yoshikawa
Yuzo
Y