摘要 : Five new diorganotin(IV) compounds were prepared by reacting diorganotin dichlorides R_2SnCl_2 (R = Me, nBu and Ph) with sodium salts of the tridentate NO_2 ligands (E)-3-hydroxy-2-((2-hydroxybenzylidene)amino)propanoic acid (L~1H... 展开 Five new diorganotin(IV) compounds were prepared by reacting diorganotin dichlorides R_2SnCl_2 (R = Me, nBu and Ph) with sodium salts of the tridentate NO_2 ligands (E)-3-hydroxy-2-((2-hydroxybenzylidene)amino)propanoic acid (L~1H_2Na) and (E)-3-hydroxy-2-((1-(2-hydroxyphenyl)ethylidene)amino)propanoic acid (L ~2H_2Na). The molecular structures of the resulting diorganotin (IV) compounds have been established by elemental analysis and a combination of IR and NMR (~1H, ~(13)C, ~(119)Sn) spectroscopy. In all cases, the ~(119)Sn NMR chemical shifts were indicative of five-coordinate tin atoms in solution. However, investigation of compounds [Me_2SnL~1H]·H_2O (1), [Ph _2SnL~1H]·2C_6H_6 (3), [Me _2SnL~2H]·CHCl_3 (4) and [Ph _2SnL~2H] (5) by single-crystal X-ray diffraction revealed that only compound 3 has a distorted trigonal-bipyramidal geometry in the solid state. For compounds 1, 4 and 5 the coordination geometries are distorted octahedral, either due to intermolecular association through Sn?O interactions (1) or coordination through the oxygen atom from the pendant CH_2OH group (4 and 5). At the supramolecular level, the molecular structures are linked through O-H?O hydrogen bonds to give discrete dimeric assemblies (4), 1D chains (3, 5) and 2D hydrogen bonded layers (1). 收起