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The impact of substituting Hg(II) for Zn(II) in a thiolate-bridged trinuclear cluster with parallels to a metallothionein metal cluster was investigated. A new solvomorph of [Zn(Zn L ) 2 ](ClO 4 ) 2 ( 1 ) ( L = N -(2-pyridylmethyl)- N -(2-(ethylthiolato)-amine) and five solvomorphs of a new compound [Hg(Zn L ) 2 ](ClO 4 ) 2 ( 2 ) were characterized by single-crystal X-ray crystallography. The interplay of hydrogen bonding and aromatic-packing interactions in producing lamellar, 2D lamellar, and columnar arrangements of complex cations in the crystalline state is discussed. Both variable temperature proton nuclear magnetic resonance and electrospray ion-mass spectrometry (ESI-MS) suggest that the complex ions of 1 and 2 are the predominant solution species at moderate concentrations. ESI-MS was also used to monitor differences in metal ion redistribution as 1 was titrated with Hg(ClO 4 ) 2 and [Hg L (ClO 4 )]. These studies document the facile replacement of Zn(II) by Hg(II) with the preservation of the overall structure in thiolate-rich clusters.

Metal Substitution and Solvomorphism in Alkylthiolate-Bridged Zn3 and HgZn2 Metal Clusters

Metal Substitution and Solvomorphism in Alkylthiolate-Bridged Zn₃ and HgZn₂ Metal Clusters