The title complex {[nBu2Sn(2-OHC6H4CH=NC6H4COO)]2O}2·2H2O was synthesized by the reaction of N-(4-carboxyphenyl)-salicylideneimine with dibutyltin(Ⅳ) oxide in 1∶1 molar ratio. The compound has been characterized by elemental analysis, IR, 1H NMR spectra and X-ray single crystal diffraction. It crystallizes in triclinic system with space group P1. The crystal data are: a=1.242 9(2) nm, b=1.261 3(2) nm, c=1.594 9(3) nm, α=102.06(2)°, β=92.884(3)°, γ=95.939(3)°, Z=2, Dc=1.342 g·cm-3, F(000)=1 000, V=2.425 2(7) nm3, R1=0.041 5, wR2=0.104 4. The compound is in centro-symmetric dimer structure mode with a four-member central endo-cyclic Sn2O2 unit in which the bridging oxygen atoms are tri-coordinated. All the tin atoms are five-coordinated with geometry of distorted trigonal bipyramid. CCDC:286105.
The title compound, [Ag(L)]·H2O, 1, where HL=4-(isonicotinamido)benzoic acid, was synthesized in methanol solution and its crystal structure was determined by X-ray diffraction analysis. The crystal is of monoclinic, space group P21/c with a=0.571 8(8) nm, b=1.357 2(18) nm, c=1.558 0(2) nm, β=91.090(2)°, V=1.209 0(3) nm3, Z=4, Dc=2.009 g·cm-3, F(000)=722, Rint=0.042 9, R=0.027 1, wR=0.055 6. In complex 1, the Ag atoms are linearly coordinated by one O atom and one N atom of two ligand molecules. Each L-ligand in turn uses its one carboxylate group and one pyridinyl groups to connect two metal centers, then the one-dimensional (1D) chains is formed. On the other hand, the 1D chains are further connected by O1W-H1WB…O2 hydrogen bonds and Ag-O weak interactions to give a two-dimensional (2D) layer, finally, the 2D net extents to three-dimensional (3D) supramolecular framework by O1W-H1WB…O1 as well as N2-H2…O2 interactions.
