Cis-Influence determination of ethylene and benzyl cyanide ligands in the complexes cis-[Pt(Me 2SO)(C 2H 4)Cl 2] and cis-[Pt(Me 2SO)-(PhCH 2CN)Cl 2] on the basis of X-ray structure data. IR and 1H, 13C and 195Pt NMR characterization of the cis-[Pt(Me 2SO)LCl 2] series

Abstract

Complexes of the cis-[Pt(Me 2SO)LCl 2] series (L=Me 2SO, Me 2S, C 2H 4, MeCN, PhCH 2CN, PhCN, C 5H 5N, 2Me-C 5H 4N and NH 3) were prepared by known methods and characterized by IR and 1H, 13C{ 1H}, 195Pt{ 1H} NMR spectra. Structures of cis-[Pt(Me 2SO)(C 2H 4)Cl 2] and cis-[Pt(Me 2SO)- (PhCH 2CN)Cl 2] were determined by X-ray analysis, cis-[Pt(Me 2SO)(C 2H 4)Cl 2] crystallizes in the orthorhombic space group Pmnb. The unit cell parameters are a=8.200(1), b=12.924(3), c=8.574(1) Å, V=908.7(3) Å 3, ρ calc=2.72 g cm −3, Z=4. cis-[Pt(Me 2SO)(PhCH 2CN)Cl 2] crystallizes in the monoclinic space group P2 1/ n. The unit cell parameters are: a=12.223(4), b=16.605(4), c=6.779(2) Å, γ=91.10(2)°, V=1375.6(7) Å 3, ρ calc=2.23 g cm −3, Z=4. On the basis of the X-ray structure data cis- and trans- influence of C 2H 4 and PhCH 2CN ligands were determined.