Tuning the Supramolecular Structure through Variation of the Ligand Geometry and Metal Substituents–Diorganotin Macrocycles and Coordination Polymers Derived from cis - and trans -1,2-, 1,3-, and 1,4-Cyclohexanedicarboxylic and cis , cis -1,3,5-Cyclohexanetricarboxylic Acid (original) (raw)

Crystal Growth & Design, 2015

Abstract

ABSTRACT cis- and trans-1,2-chdcaH2, 1,3-chdcaH2, and 1,4-chdcaH2 (chdcaH2 = cyclohexanedicarboxylic acid) as well as cis,cis-1,3,5-chtcaH3 (chtcaH3 = cyclohexanetricarboxylic acid) have been treated with dimethyl- and di-n-butyltin reagents, and for the case of 1,4-chdcaH2 additionally with di-tert-butyltin dichloride, to determine whether macrocyclic or polymeric diorganotin dicarboxylates are formed dependent of the spatial orientation of the coordinating ligand functions and the organic substituents at the metal atom and to analyze conformational and topological variations in the resulting supramolecular aggregates. The single-crystal X-ray diffraction studies showed that besides the ligand geometry the substituents at the metal center are key elements for the formation of either monomeric, cyclo-oligomeric, or polymeric assemblies. Two of the compounds characterized by X-ray diffraction analysis exhibited macrocyclic ring structures, [{Me2Sn(cis-e,a-1,4-chdca)}2] and [{nBu2Sn(cis-e,a-1,4-chdca)}4]. For most of the remaining compounds, one-dimensional polymeric solid-state structures of composition [{R2Sn(1,x-chdca)(H2O)y}n] (R = Me, nBu, tBu; x = 2, 3, 4; y = 0, 1) were observed, which had varying topologies, and for the case of the Me2Sn and nBu2Sn derivatives were further linked to two- or three-dimensional supramolecular architectures, either through intermolecular Sn···O or O-H···O hydrogen-bonding interactions.

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