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.