M. Amirnasr, K. Schenk, Alireza Gorji
Apr 15, 2001
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Journal
Polyhedron
Abstract
Abstract Three Co(III) complexes of the type [Co(salophen)(amine) 2 ]ClO 4 , salophen= N , N ′-disalicylidene-1,2-phenylendiamine dianion and amine=morpholine ( 1 ), pyrrolidine ( 2 ), and piperidine ( 3 ), have been synthesized and characterized by elemental analysis, IR, UV–Vis, 1 H, and 13 C NMR spectroscopy. [Co(salophen)(morpholine) 2 ]ClO 4 ( 1 ) and [Co(salophen)(pyrrolidine) 2 ]ClO 4 ( 2 ) have been studied by X-ray diffraction. Compound 1 crystallizes in ribbons of complexes and perchlorates held together by weak NH⋯O and CH⋯O hydrogen bonds between morpholines and perchlorates. The latter also interconnect the chains to a 3D network. Some minor π–π interactions exist. Compound 2 crystallizes as endless chains of complexes linked by weak CH⋯O hydrogen bonds to the disordered perchlorates. The pyrrolidine moiety is turned by 90° with respect to 1 and forms intramolecular NH⋯O hydrogen bonds. The coordination polyhedra of 1 and 2 possess C s symmetry, and the salophens are not planar in either of them.