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DOI: 10.1039/A809543D (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1999, 1013-1016

Platinum(II) and palladium(II) complexes of N-benzoyl-N[hair space]′-propylthiourea (H2L): synthesis and geometric isomer distribution of [M(H2L-S[hair space])2X2] (M = PtII or PdII; X = Cl–, Br– or I–); crystal structure of trans-[Pd(H2L-S[hair space])2Br2]

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Klaus R. Koch, Yali Wang and Anita Coetzee

Abstract

A systematic study of the synthesis and cis/trans isomer distribution for simple [M(H2L-S[hair space])2X2] complexes (M = PtII or PdII; X = Cl, Br or I; H2L = N-benzoyl-N[hair space]′-propylthiourea) has shown that the pure cis-[Pt(H2L-S[hair space])2Cl2] complex is obtained prior to recrystallization. The cis-[Pt(H2L-S[hair space])2Cl2] complex undergoes facile isomerization in a variety of organic solvents, the equilibrium cis/trans distribution of which depends on solvent polarity. The corresponding bromo- and iodo-complexes of PtII tend toward mainly the trans isomers, as do the corresponding palladium(II) complexes. The crystal structure of trans-[Pd(H2L-S[hair space])2Br2] has been determined which is the first example of a palladium(II) complex in which the potentially chelating ligand is bound through the S atom only.

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