Abstract
X-ray crystal structures of cis-[CrCl(en)2(DMSO)]ZnCl4 (1) (C6CrCl5H22N4OSZn, P21/c, Z = 4, a = 9.750(3), b = 11.502(2), c = 16.579(4)Å, β = 98.15(2)°, R = 0.0517), cis-[CrCl(en)2(DMSO)](NO3)ClO4 (2) (C6CrCl2H22N5O8S, P21/c, Z = 4, a = 11.689(3), b = 9.374(2), c = 16.419(5)Å, β = 101.17(2)°, R = 0.0530), cis-[CrCl(tn)2(DMSO)]ZnCl4 (3) (C8CrCl5H26N4 OSZn, P21/c, Z = 4, a = 11.331(2), b = 10.819(2), c = 17.295(3)Å, β = 106.27(1)°, R = 0.0525) and sym-fac-cis-[CrCl(dien)(DMSO)2]ZnCl4 (4) (C8CrCl5H26N4OSZn, Pbca, Z = 8, a = 12.703(3), b = 16.074(2), c = 20.988(3)Å, R = 0.0449) are described. Geometrical features of the coordinated DMSO molecules are compared with the corresponding literature values for other O-bonded metal sulfoxides, the most notable feature being the shortness of the CrO bonds. The conformations of the chelate rings in the coordinated polyamine ligands are also discussed.
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