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• W2897825562 abstract "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 exhibits N,O-chelate ring formation with the carboxylate group in the 2-position and bridging to other tin atoms primarily by the 5-carboxylate group, giving macrocyclic, one-, two-, or three-dimensional MCPs. On the contrary, triorganotin moieties are mostly bound only by the ligand carboxylate groups without N→Sn binding. The assemblies of diorganotin 25pdc’s mostly contain trinuclear or tetranuclear macrocycles with a large predominance of the generally uncommon [3 + 3] metal–organic aggregates. For the trinuclear macrocycles, different configurations having 12-, 18-, 21-, or 27-membered rings were encountered. The metal atoms in diorganotin 25pdc’s prefer pentagonal-bipyramidal environments, which are achieved through coordination by solvent molecules (H2O, DMSO, py) or intermolecular O→Sn bond formation. In solution, di-n-butyltin 25pdc exhibits supramolecular isomerism, giving a tetrameric aggregate in the noncoordinating solvent chloroform and a trimeric species in the presence of coordinating solvents, such as DMSO, pyridine, or methanol, due to solvent→Sn bond formation." @default.
• W2897825562 created "2018-10-26" @default.
• W2897825562 creator A5008376970 @default.
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• W2897825562 date "2018-10-09" @default.
• W2897825562 modified "2023-10-18" @default.
• W2897825562 title "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" @default.
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• W2897825562 doi "https://doi.org/10.1021/acs.cgd.8b01299" @default.
• W2897825562 hasPublicationYear "2018" @default.
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