Abstract

Four triorganotin(IV) complexes constructed from tetrafluorophthalic acid (H2tfp) with a 1 : 1 : 1 molar ratio of H2tfp: Et3N: R3SnCl gave two of type {[R3Sn (tfp)].Et3NH}4 (R = Me 1, R = n-Bu 2), and two of type [R3Sn (tfp).Et3NH] n (R = PhCH2 3, Ph 4). All the complexes are characterized by elemental, IR, 1H, 13C and 119Sn NMR analyses. Complexes 1 and 4 were also confirmed by X-ray crystallography. Complex 1 is tetranuclear with a 28-membered C16O8Sn4 macrocyclic ring system with a cavity. The supramolecular structure of 1 has been found to consist of a three-dimensional network built up by intermolecular N–H ··· O, C–H ··· O hydrogen bonds and C–F ··· F weak interactions. Complex 4 is an infinite polymeric structure. The salient feature of the supramolecular structure of 4 is that of a two-dimensional plane, in which intermolecular N–H ··· O and C–H ··· π hydrogen bonds are important.

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