We report high resolution photoelectron imaging spectra of Cu and Cu (H2O)n (n = 1,2) complexes. With the least bound electron principally localized on the metal, electron photodetachment produces neutral states that are best characterized by the atomic metal state plus a water molecule: [Cu (S), H2O], [Cu ( D5/2), H2O], and [Cu ( D3/2), H2O]. The large Cu –H2O separation gives rise to a remark...

The assignments structures of the four 1:1 pipemidic acid (pipH)–magnesium(II), calcium(II), zinc(II), and iron(III) complexes, [Mg(pip)(H2O)3(Cl)].6H2O, [Ca(pip)(H2O)3(Cl)].2H2O, [Zn(pip)(H2O)3(Cl)].4H2O, [Fe(pip)(H2O)2(Cl)2].6H2O, (where pip = deprotonated pipemidic), were synthesized through chemical reactions MgCl2.6H2O, CaCl2.2H2O, ZnCl2, FeCl3.6H2O metal salt chlorides with pipH chemother...

Three sandwich-type silicotungstates, formulated as [Cu4(H2O)2(SiW9O34)2] x 12 NH4 x 22 H2O (1), [Cu4(H2O)2(SiW9O34)2] x 12 NH4 x 11 H2O (2) and {[Cu(NH3)4]2[Cu(H2O)4][Cu4(H2O)2(SiW9O34)2]} 2[Cu(NH3)4(H2O)] x 2 NH4 x 6 H2O (3), were synthesized by microwave irradiation and hydrothermal reaction. Crystal structural analysis reveals that 1-3 possess the same dimeric polyoxoanions [Cu2SiW9O34(H2O)...

Two new dinickel complexes with anthyridine-based ligands, 5-phenyl-2,8-bis(2-pyridinyl)-1,9,10-anthyridine () and 5-phenyl-2,8-bis(6'-bipyridinyl)-1,9,10-anthyridine (), are reported. Complexation of Ni(OAc)2 with and in trifluoroacetic acid provided the corresponding dinickel complexes [{Ni2()(H2O)6(CF3COO)2}(CF3COO)2] () and [Ni2()(CF3COO)4(H2O)] (), respectively. Both complexes were charact...

Three copper(II) complexes of salicylaldehyde N(4)-phenyl thiosemicarbazone (H2L ) and two copper(II) complexes of N(4)-cyclohexyl thiosemicarbazone (H2L ) have been synthesized and characterized by different physicochemical techniques like magnetic studies and electronic, infrared and EPR spectral studies. The complexes 1⁄2ðCuL1Þ2 12H2O ð1Þ and [(CuL )2] (4) having dimeric structure. The thios...

Seven Zn(II) coordination complexes with 5-halonicotinic acids (HL-X, X = F, Cl, or Br) have been synthesized with different synthetic approaches, including layer diffusion or stirring method in an ambient environment and solvothermal synthesis at 100 °C. Assembly of HL-F with Zn(II) under different conditions will yield the same 2D network of [Zn(L-F)2]n (1). Interestingly, three distinct comp...

The reaction of trans-[Fe(R-bpb)(CN)2]- (R-bpb2-=R-substituted-1,2-bis(pyridine-2-carboxamido)benzenate) with trans-Mn(III) Schiff base complexes [Mn(5-X-saltn)]ClO4 (5-X-saltn2-=N,N'-propanolbis(5-X-substituted-salcylideneiminato) dianion) gave rise to cyanide-bridged neutral binuclear [MnFe] compounds [Mn(saltn)(MeOH)][Fe(bpb)(CN)2].3H2O (), [Mn(saltn)(H2O)Fe(bpmb)(CN)2].H2O (), [Mn(saltn)(Me...

A new β-diketone, 5,6-dimethoxy-2(2,2,2-trifluoroethyl)-1-indone (5,6-DTFI), has been designed and synthesized. Two series of four 5,6-DTFI Sm(3+) and Eu(3+) complexes, namely, Eu(5,6-DTFI)3(H2O)2 (1), Eu(5,6-DTFI)3(Phen) (2), Sm(5,6-DTFI)3(H2O)2 (3) and Sm(5,6-DTFI)3(Phen) (4) (Phen = 1,10-phenanthroline), have been isolated. X-ray diffraction analysis reveals that all complexes 1-4 are of mon...

A novel Schiff base, ethyl 4-[(E)-(2-hydroxy-4-methoxyphenyl)methylene-amino]benzoate (HL), was prepared and structurally characterized on the basis of elemental analyses, (1)H NMR, (13)C NMR, UV-Vis and IR spectral data. Six new copper(II) complexes, [Cu(L)(NO3)(H2O)2] (1), [Cu(L)2] (2), [Cu(L)(OAc)] (3), [Cu2 (L)2Cl2(H2O)4] (4), [Cu(L)(ClO4)(H2O)] (5) and [Cu2(L2S)(ClO4)(H2O)]ClO4·H2O (6) hav...

To investigate how modification in the structure of 1,3-propanediamine chain 1,3-pdta (1,3-propanediamine-N,N,N′,N′-tetraacetate) ligand affects structural and biological properties corresponding metal complexes, two new octahedral [Co(H2O)5Co(2,2-diMe-1,3-pdta)]·H2O (1) [Mg(H2O)5Mg(2,2-diMe-1,3-pdta)]·1.5H2O (2) (2,2-diMe-1,3-pdta = 2,2-dimethyl-1,3-propanediamine-N,N,N′,N′-tetraacetate), were...