Syntheses, characterization and crystal structure of diorganotin and triorganotin heterocyclicdicarboxylates with monomeric, 2D network and 3D framework structures

A series of new diorganotin and triorganotin(IV) heterocyclicdicarboxylates [(nBu3Sn)2(2,5-pdc)]∞ (1), {[(2-FC6H4CH2)3Sn]2(2,5-pdc)}∞ (2), {[(2-ClC6H4CH2)3Sn]2(2,5-pdc)}∞ (3), {[(4-CNC6H4CH2)3Sn]2(2,5-pdc)}∞ (4), {[(4-ClC6H4CH2)3Sn]2(2,5-pdc)}∞ (5), [(Ph)2Sn(2,6-pdc)(H2O)]∞ (6), {[nBu3Sn(2,6-pdc)SnnBu3]2(H2O)2} · C2H3N (7) and {[Ph3Sn(2,3-pdz)SnPh3]2(H2O)} (8) have been obtained by reactions of diorganotin(IV) and triorganotin (IV) oxide with 2,6 or 2,5-H2pdc (pdc = pyridinedicarboxylate) or 2,3-H2pdz (pdz = pyrazinedicarboxylate). Complexes 1–8 were characterized by elemental, IR and NMR spectra analyses. The crystal and molecular structures of compounds 1, 6, 7 and 8 have been determined by X-ray single crystal diffraction. Compound 1 has 2D network structures. Compound 6 has 1D polymeric chain and 3D framework supramolecular structures due to the coordinated water molecules. Compound 7 has a monomeric structure, but the supramolecular structures are network.

Graphical abstractA series of diorganotin(IV) and triorganotin(IV) complexes with heterocyclicdicarboxylic acid have been synthesized. Those complexes were characterized by elemental analysis, IR, 1H and 119Sn NMR spectra. The crystal and molecular structures of complexes 1, 6, 7 and 8 have been determined by X-ray single crystal diffraction.Figure optionsDownload full-size imageDownload as PowerPoint slide