Dimerization and polymeric self-arrangement of [Hg-II(Py)(2)(PhN2C6H4NNNC6H4R)(2)] (Py = pyridine; R = NO2) through reciprocal metal-eta(2)-arene pi-interactions and non-classical C-(HO)-O-... bonding: Synthesis and X-ray characterization of a polyar

摘要

Deprotonated 3-(4-phenyldiazophenyl)-1-(4-nitrophenyl)triazene reacts with Hg(CH3COO)(2) and pyridine to give red crystals of {[Hg-11(PY)(2)(PhN2C6H4NNNC6H4R)(2)](2)}(n) (Py=Pyridine; R=NO2). In the bis-diazo-triazenide complex the tectons [Hg-II (Py)(2)(PhN2C6H4NNNC6H4R)(2)] are linked to pairs as centrosymmetric dimers through reciprocal metal-eta(2) -arene pi-interactions. The dimeric units are assembled by translation in the plane ac to unidimensional chains linked through non classical C-H...O hydrogen bonds. In the unit cell these 1D chains are related in pairs through an inversion centre. Thus far also no other Hg-11-Py complexes with two coordinating pyridine molecules were reported. (c) 2006 Elsevier B.V. All rights reserved.