From zero- to three-dimensional heterobimetallic coordination polymers with the [Pt{SSC-N(CH2COO)2}2]4− metalloligand

Abstract

Heterobimetallic compounds of the type [Pt(L)₂] (L = N-dithioato-iminodiacetate, {SSC-N(CH₂COO)₂}³⁻) containing different bivalent, oxophilic metals M′ were prepared in a straightforward manner from [Pt(H₂L)₂] and the respective metal acetates, M′(OAc)₂ (M′ = Mg–Ba, Mn–Cu, Cd). X-ray structure determination revealed that the products exist as zero- (Mg), one- (Mn), two- (Fe, Co, Ni, Cd), or three-dimensional (Sr) assemblies in the solid state. As a result, the water solubilities and thermal stabilities of the products cover much wider ranges than has been seen with [M(L)₂] compounds with different thiophilic metal centers (M = Ni, Pd, Pt). While most of the compounds show typical diamagnetic (Mg–Ba, Cd) or paramagnetic (Mn, Co, Ni, Cu) behaviour at ambient temperature, for Fe₂[Pt(L)₂]·4H₂O, an antiferromagnetic interaction of the Fe atoms is assumed.