On the structures and properties of Cr(DMSO)(6)(3+) and the coordination polymer cis-Cr(III)(oxalate)(2)(DMSO)(2) K(DMSO)(2) (n)
Artikel i vetenskaplig tidskrift, 2000
cis-Cr(III)(oxalate)(2)(DMSO)(2)K(DMSO)(2) was formed by K3Cr(oxalate), in dimethylsulfoxide-THF mixtures. The structure is ribbon-like with cis-Cr(oxalate)(2)(DMSO)(2)(-) complex ions bridged by oxalates to (DMSO)K(DMSO)(2)K(DMSO) units forming interconnected rings of six metal complexes. In the same type of solutions Cr(DMSO)(6)(NO3)(3) was also formed. In this structure Cr(III) is six-coordinated by oxygens from DMSO. Cr(DMSO)(6)(NO3)(3) is isostructural with Fe(DMSO)(6)(NO3)(3) (J.R. Tzou et al., Acta Crystallogr., Sect. C, 51 (1995) 2249). The Cr(III)-O distance shows an expected shortening of about 0.04 Angstrom compared to the Fe(III)-O bond in Fe(DMSO)(6)(NO3)(3). (C) 2000 Elsevier Science S.A. All rights reserved.
sulfoxide complexes
ions
networks
field
dimethyl-sulfoxide
chromium complexes
oxalate
complexes
sulfoxide complexes
crystal structures
ligand
crystal-structure
magnetic-properties