Hydrolysis of dibenzyltin dichloride in ethanol has been found to give an unprecedented carbonate anion (CO3 2-)-bridged double-ladder organo oxotin cluster, [(R2SnO)3(R2SnOH)2- (CO3)]2 (1,R = C6H5CH2), with five tin atoms in each ladder. With the aim of obtaining organooxotin clusters with large cavities suitable for host-guest chemistry, we used 1,1’-ferrocenedicar- boxylic acid (H2La) and hexanedioic acid (H2Lb) to replace the carbonate anions (CO3 2-), and thereby clusters [(R2SnO)3(R2SnOH)2La]2 (2) and [(R2SnO)3(R2SnOH)2Lb]2 (3) were ob tained. When 1 was treated with benzo ic acid (HLc) in different stoichiometric ratios (1:4, 1:10), ladder cluster (R2SnO)3(R2SnOH)2(Lc)2 (4) and drum cluster [RSn(O)Lc]6 (5) were obtained. Through the hydrolysis of Cy2SnCl2 (Cy = C6H11) and (C6H5CH2)2SnCl2, two interesting ethanolate-modified clusters [Cy2(C2H5O)SnOSn(C2H5O) Cy2]2 (6) and [(R2SnO)3 (R2SnOH) (R2SnOC2H5)(CO3)]2 (7) were ob tained. All the tin atoms in these ladder clusters are five-coordinate surrounded by two alkyl groups and three O atoms, and have distorted trigonal bipyramidal coordination environments with two carbon atoms and one O atom in the equatorial positions and two O atoms in the axial positions. The structures of all these compounds have been established by single-crystal X- ray diffraction analyses.

Using lowtemperature hydrothermal methods, nanoscale lanthanide phenylphosphonates species with different morphologies, namely, nanoparticles and nanorods, have been systematically synthesized. The possible growth mechanism of these nanorods was discussed. Xraydiffraction,　transmissionelectronmicroscopy, electrondiffraction, and photoluminescence spectra were used to characterize these materials. The photoluminescent properties of Eu(O3PC6H5) (HO3PC6H5) and La0.91Eu0.09(O3PC6H5) (HO3PC6H5) nanorods were discussed.

The reactions of sodium nitroprusside [Na2Fe(CN)5NO • 2H2O] with organotin have been studied. Six new organotin-cyanometalate compounds, [Ph3Sn]2[Fe(CN)5NO] (1), [Bz3Sn]2[Fe(CN)5NO](Bz=C6H5- CH2-) ( 2), [Bz2Sn] [Fe(CN)5NO] (3), [(Bz3Sn)2CN]2 [Fe(CN)5NO] (4), [Bz2SnOSn(MeO)Bz2]2 [Fe(CN)5-NO] • 3CH2Cl2 (5), and [Bz2SnOSn(EtO)Bz2]2 [Fe(CN)5NO] • 3CH2Cl2 (6), have been isolated in these reactions and characterized by the X-ray diffraction method. Each of compounds 1,2,3,and 4shows a 2D polymeric structure containing planar four-connected [Fe(CN)5NO]2- anions. Compound 4 is the first organotin-cyanometalatecompound containing a superlong-CN-R3Sn-CN-SnR3-NC-spacer. Compounds 5 and 6 are the first examples of organotin-cyanometalate compounds of organooxotin clusters, in which the organooxotin clusters are bridged by cyanometalate anions to generate a novel 1D polymeric chain structure.

A novel coordination polymer {[Cu(L1)(L2)(H2O)] •5H2O}n (1), where L1 = 1,1’-(1,4-butanediyl) bis (imidazole) and L2 = m-phthalate anion has been obtained by using an unusual crystallization process. It crystallizes in the orthorhombic space group Pna21, which belongs to the crystal class mm2, with a = 9.0521(18), b = 15.401(3), and c = 17.141(3) Å, α = β = γ= 90°, V = 2389.7(8) Å3, and Z = 4. The complex 1 composing a porous supramolecular architecture displays unprecedented four-connected topologyof an 86 net in coordination polymer chemistry. Thermal gravimetric analysis (TGA) and X-ray powder diffraction (XRPD) patterns for 1 are discussed in detail.