The electronic structure of model platinum-guanine and tin-guanine adducts has been studied both at semiempirical level and by using ab initio methods at the correlation level. The possible binding energies have been evaluated and most probable strustures were determined. In all cases the binding enegies of the gaseous tin chelates are rather large. The stabilizing role of the hydrogen bonds ha...

The VO(IV) complexes of tridentate ONO Schiff base ligands derived from 2- aminobenzoicacid and salicylaldehyde derivatives were synthesized and characterized by IR, UV–Vis and elemental analysis. Electrochemical properties of the vanadyl complexes were investigated by cyclic voltammetry. A good linear correlation was observed between the oxidation potentials and the electron-withdrawing charac...

Two new organotin (IV) bipyrazole-dicarboxylate macrocyclic complexes, C1 (C58H100N8O10Sn4) and C2 (C58H100N8O12Sn4, 4 H2O), are synthesized by reaction of the bipyrazole-dicarboxylic acids L1 = 1,1?-(propane-1,3-diyl)bis(5-methyl-1H-pyrazole-3-carboxylic acid) L2 1,1?-(2-hydroxypropane-1,3-diyl)bis(5-methyl-1H-pyrazole-3-carboxylic with oxide di-(n-butyl)tin. The structure these complexes is c...

Two dimensional nanostructures of group IV elements have attracted a great deal of attention because of their fundamental and technological applications. A graphene-like single layer of tin atoms, commonly called stanene, has recently been predicted to behave like a quantum spin Hall insulator. Here we report the atomic structure, stability and electron transport properties of stanene stabilize...

We demonstrate near-infrared (NIR) absorptive and emissive poly(p-phenylene vinylene) (PPV)-type ?-conjugated polymers based on hypervalent tin-fused azobenzene (TAz) complexes. Taking advantage of the inherent narrow-energy gap TAz complexes originating from three-center four-electron (3c-4e) bond nitrogen–tin (N–Sn) coordination, synthesized polymers, TAz-PPVs, showed absorption, emission in ...