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The syntheses and structures of two new ZnII complexes, a 2D graphite-like layer {[Zn(PIA)H2O] ⋅H2O} n ( 1) and an independent 1D single-walled metal-organic nanotube (SWMONT) {[Zn2(PIA)2(bpy)2] ⋅2.5 H2O ⋅DMA} n ( 2), have been reported based on a 'Y'-shaped 5-(pyridine-4-yl)isophthalic acid ligand (H2PIA). Interestingly, the 2D graphite-like layer in 1 can transform into the independent 1D SWMONT in 2 with addition of 2,2′-bipyridine (bpy), which represents the first successfully experimental example of an independent 1D metal-organic nanotube generated from a 2D layer by a 'rolling-up' mechanism. [ABSTRACT FROM AUTHOR]

Six novel organotin (IV) complexes, [(Me3Sn)2(H2O)2L] (1), [(R3Sn)2L]n (R = Me 2, R = n‐Bu 3), [(Ph3Sn)2L] (4), [Me2SnL]n (5), [(Me2Sn)2L(μ3‐O)]n (6) have been designed and synthesized by the reactions of 4,4′‐oxybisbenzoic acid (H2L) and triorganotin (IV) chloride or oxide. All the complexes have been characterized by elemental analysis, FT‐IR, NMR, ESI‐Mass, PXRD and X‐ray crystallography. The single crystal diffraction reveals that complexes 1 and 4 represent dinuclear tin monomers. Complexes 2 and 3 display 2D network structure and 2D corrugated framework respectively, which both contain tetranuclear 36‐membered macrocycles. Furthermore, 2D structures are linked into a 3D supramolecular structures through intermolecular C‐H···π interactions. Complex 5 shows 1D infinite helical chain and further constructs 3D ladder supramolecular architecture through additional Sn···O and C‐H···O intermolecular interactions. Complex 6 displays 1D infinite polymeric chain containing 28‐membered macrocyclic ring. Preliminarily in vitro cytostatic activity studies on cervical carcinoma cell lines (HeLa) and hepatocellular carcinoma cell lines (HepG‐2) by MTT assay for some complexes reveal that complexes 3 and 4 exhibit high cytostatic activity. Further, complexes 3 and 4 were selected to investigate interactions of bovine serum albumin (BSA) by fluorescence quenching spectra and synchronous fluorescence spectra, which indicates that the complexes could quench the intrinsic fluorescence of BSA in a static quenching process. [ABSTRACT FROM AUTHOR]

The structure of the title compound, [Sn4(C7H7)8(C7HF4O2)4O2], features a central Sn2O2 unit with two additional Sn atoms linked by the μ3-oxo atoms. Two pairs of Sn atoms are bridged by two bidentate 2,3,4,5-tetra­fluoro­benzoate ligands. Two of the Sn atoms are also each coordinated by a monodentate 2,3,4,5-tetra­fluoro­benzoate ligand. The geometry around each five-coordinated Sn center is distorted trigonal bipyramidal. [ABSTRACT FROM AUTHOR]