in present studies the synthesis, characterization and biological properties ofoxovanadium(iv) coordination compounds of 4[n-(4′-ethylbenzalidene)amino] antipyrinethiosemicarbazone (ebaapts) and 4[n-(2′,4′-dimethylbenzalidene)amino] antipyrinethiosemicarbazone (dmbaapts) with the general composition vox2l (x = c1-, br-, i-, no3-or ncs-) and vo(cio4)2(l)h2o (l = ebaapts or dmbaapts) are describe...

Electrospray ionization was used to generate mono-positive gas-phase complexes of the general formula [UO2A(S)n]+ where A = OH, Cl, Br, I or ClO4, S = H2O, CH3OH or CH3CH2OH, and n = 1-3. The multiple-stage dissociation pathways of the complexes were then studied using ion-trap mass spectrometry. For H2O-coordinated cations, the dissociation reactions observed included the elimination of H2O li...

Some new Zn(II) and Cu(II) complexes [Cu(L1)(OAc)2]∙H2O, [Cu(L1)(NO3)H2O]∙NO3∙3.5H2O, [Zn(L1)(NO3)2]∙4.5H2O, [Zn(L1)(OAc)2(H2O)2]∙3H2O, [Cu2(L2)(OAc)4]∙2H2O∙2DMF, [Cu(L2)2]∙2NO3∙1.5DMF∙H2O, [Zn(L2)2(NO3)2]∙DMF and [Zn2(L2)(OAc)4(H2O)4]∙5H2O; L1 = 2-[2-(2-methoxyphenyl)hydrazono]cyclohexane-1,3-dione and L2 = 2-[2-(3-nitrophenyl)hydrazono]cyclohexane-1,3-dione were synthesized and characterized ...

195pt and 1h nmr has been used to show that addition of chlorine and bromine to [pt(cn)4]2_ in presence of perchloric acid in water results in cyanide and water scrambling with formation of eleven complexes of the type [pt(cn)4-ncl(h2o)n+1](n-1)+ (n=0, 1, 2, 3, 4). addition of nbu4oh to this solution gives (nbu4)2[pt(cn)4cl(oh)]. nmr measurements in acetone also show cyanide and hydroxyl group ...

Two solvated cobalt(ii) terpyridine complexes, [Co(MeO-terpy)2](BF4)2·H2O (·H2O) and [Co(MeO-terpy)2](BF4)2·acetone (·acetone) were prepared. Annealing each of these complexes resulted in the formation of two desolvated species, and , respectively. ·H2O and exhibited two-step and gradual SCO. The compound ·acetone has high-spin at all temperatures and undergoes a reverse spin transition due to ...

Ab initio calculations are carried out on the H2O•••N2, H2O•••H2, and H2O•••CO complexes. Infrared spectra of the complexes are investigated, with an emphasis on the effect of weak bonding on the frequencies and the infrared intensities of the monomers. Connections are explored between the computational results and the experimentally measured infrared spectra of ice surfaces covered by H2, N2, ...

Two new metal complexes formulated as [Mg(L)2(H2O)2]·H2O (1) and [Zn(L)2(H2O)2]·0.5H2O (2), where HL = 5-hydroxyflavone (primuletin), have been synthesized and characterized by elemental and thermal analyses, molar conductance, IR, UV-Vis, 1H- and 13C-NMR, fluorescence and mass spectra. In solid state, complexes had shown higher fluorescence intensities comparing to the free ligand, and this be...

Metal complexes of tioconazole such as [Cu(nor)2(H2O)2], [Zn(nor)2(H2O)2], [Ni(nor)2(H2O)2].4H2O and [Fe(nor)2(H2O)Cl].5H2O have been synthesized and characterised by elemental analysis, IR, UV-Visibe, ESR, NMR, XRD spectrscopic techniques. Thermal analysis was studied by TGA, DSC method. Morphological studies were carried out by scanning electron microscopic method. DNA binding studies were ca...

Mononuclear mono- and bis-chelated iron(iii) complexes [Fe(Phimp)(H2O)(OMe)Cl], 1, [Fe(Phimp)Cl2], 2, [Fe(Me-Phimp)Cl2], 3, [Fe(N-Phimp)Cl2], 4, [Fe(Phimp)2](ClO4), 5, [Fe(Me-Phimp)2](NO3)·H2O, 6·H2O, and [Fe(N-Phimp)2](ClO4), 7, derived from tridentate ligands, have been synthesised and characterized. The X-ray crystal structures of the complexes 2, 4, 5 and 6·H2O were determined. The high-spi...

For the first time experimental study of complexation acrylonitrile molecule (CH2=CHCN, noted AN) with water has been undertaken from a vibrational point view as well homodimer (AN)2 in solid neon 80 to 6000 cm−1 using Fourier transform infrared spectroscopy. From concentration effects and help theoretical results we have identified several transitions for AN homodimer, AN-H2O, AN-(H2O)2, (AN)2...