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Palladium(II); 2,2′-bipyridyl; imidazole; self-assembly; molecular triangle.

A rare variety of self-assembledmolecular triangle [Pd₃(bpy)₃(imidazolate)₃](NO₃)₃, 1 is prepared by the combination of Pd(bpy)(NO3)2 with imidazole, at 1:1 ratio, in acetonitrile-water. Deprotonation of imidazole happened during the course of the complexation reaction where upon the metallomacrocycle is formed. The bowl-shaped trinuclear architecture of 1 is crafted with three peripheral bpy units capable of 𝜋 - 𝜋 stacking interactions. While the solution state structure of 1 can be best described as a trinuclear complex, in the solidstate well-fashioned intermolecular 𝜋 - 𝜋 and CH-𝜋 interactions are observed. Thus, in the solid-state further self-assembly of already self-assembled molecular triangle is witnessed. The triangular panels are arranged in a linear manner utilizing intermolecular 𝜋 - 𝜋 interactions where upon two out of three bpy units of each molecule participated in the chain formation.

Mili C Naranthatta¹ V Ramkumar¹ Dillip Kumar Chand¹

1. Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India

Manuscript received

6 April 2014

Manuscript revised

13 May 2014

Accepted

14 May 2014

• supp27a.pdf
• supp27b.pdf