Pyridinedicarboxylic Acids as Versatile Building Blocks for Coordination-Driven Self-Assembly: Solvent-Induced Macrocycle and Coordination Polymer Formation upon Combination of 2,5-Pyridinedicarboxylate with Diorganotin Moieties

• DOI: 10.1021/acs.cgd.8b01299
• Publication Date: 2018-10-09T18:29:15Z
• Authors: María Guadalupe V...; Irán Rojas-León; Pedro Montes-Tole...; Irán Fernando Her...; Herbert Höpfl
• Keywords: 01 natural sciences; 0104 chemical sciences

Ligands derived from 2,x- and 3,y-pyridinedicarboxylic acid (x = 3–6; y = 4–5) are widely used building blocks for the formation of metal-coordination polymers (MCPs), as they show a large variety of bridging modes and angles. Metal complexation occurs either only with the carboxylate groups or through N,O-chelate ring formation. In this contribution, the supramolecular chemistry and solvatomorphism of diorganotin complexes with 2,5-pyridinedicarboxylate (25pdc) formed in the presence of a series of coordinating and noncoordinating solvents were explored in detail. Five novel diorganotin 25pdc’s of composition [Me2Sn(25pdc)(py)]3·3.04C5H5N·1.86H2O (1), {[Me2Sn(25pdc)]·[Me2Sn(25pdc)(H2O)]}n2nC7H8O (2), {[nBu2Sn(25pdc)]4}n·4nC6H5NO2 (3), [nBu2Sn(25pdc)(gly)]n (4), and {[nBu2Sn·(25pdc)]3}n·nCHCl3 (5) were achieved and analyzed in the context of previously reported tri- and diorganotin complexes with the same ligand. The comparative study revealed that upon coordination to diorganotin species the ligand exhib...