Supramolecular assembling of tectonic [Tl-I(RC6H4NNNC6H4R)](2) [R = p-NO2] through metal-eta(2)-arene pi-interactions and metal(...)O secondary bonding: Synthesis and X-ray characterization of a bis diaryl symmetric-substituted triazenide complex of

摘要

Deprotonated 1,3-bis(4-nitrophenyl)triazene reacts with an aqueous solution of TlNO3 to give dark-red crystals of {[Tl-I(RC6H4NNNC6H4R)](2)}(n) [R =p-NO2], a symmetric-substituted triazenide complex "polymer" of Tl-I. The centrosymmetric tectons [Tl-I(RC6H4NNNC6H4R)](2) are related by translation and attain unidimensional chains along the c-axis through Tl center dot center dot center dot O bonding. The supramolecular bidimensional (2D) assembling of the dimeric tectons is achieved through weak secondary pi-interactions of the type Tl-eta(2)-arene between the unidimensional chains. (c) 2006 Elsevier B.V. All rights reserved.