Structural and solution studies of two mercury(II) complexes with [1,3-bis(2-ethoxy)benzene]triazene

Abstract

The reaction of [1, 3-bis(2-ethoxy)benzene]triazene, [HL], with Hg(SCN) 2 and Hg(CH 3COO) 2, resulted in the formation of the complexes [HgL(SCN)] (1) and [HgL 2]·CH 3OH (2). They were characterized by means of X-ray crystallography, CHN analysis, FT-IR, 1H NMR, and 13C NMR spectroscopy. The structure of compound 1 consists of two independent complexes in which the Hg II atoms are stacked along the crystallographic a axis to form infinite chains. Each Hg II atom is chelated by one L ligand and one SCN ligand, whereas in compound 2, the Hg II atom is surrounded by two L ligands. In addition, 1D chains formed by metal-π interactions are connected to each other by C-H⋯π stacking interactions in the structure of 1, which results in a 2D architecture. An interesting feature of compound 2 is the presence of C-H⋯π edge-to-face interactions. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.