The electrochemical and photophysical properties of [(X-tpy)Ru(tpy-(fc)2-tpy)Ru(X-tpy)] (tpy ) terpyridyl; X ) -H (1a), -OCH3 (1b), -Cl (1c); fc ) ferrocenyl) and [(X-tpy)Ru(tpy-CtC-(fc)2CtC-tpy)Ru(X-tpy)] (X ) -H (2a), -OCH3 (2b), -Cl (2c)) are described. The ground-state HOMO and LUMO energies were probed by electrochemical measurements. The excited-state photophysical properties were probed ...

Two complexes [KLa(HL(1))2{(CH3)2NCHO}2(H2O)3] (1) and [Sm(H2O)9](E-H2L(2))3·2H2O (2) were synthesized by the reaction of lanthanum(III) and samarium(III) nitrates with potassium 3-(2-(2,4-dioxopentan-3-ylidene)hydrazinyl)-2-hydroxy-5-nitrobenzenesulfonate (KH2L(1)) and potassium (E,Z)-5-chloro-3-(2-(1,3-dioxo-1-phenylbutan-2-ylidene)hydrazinyl)-2-hydroxybenzenesulfonate (KH2L(2)), respectively...

Three new metal coordination polymers, namely, [Co(DPP)2(H2O)2]·(BS)2·2H2O (1), [Co(DPP)2(H2O)2]·(ABS)2·2H2O (2) and [Co(DPP)2(MBS)2] (3) [DPP = 1,3-di(pyridin-4-yl)propane, BS = phenyl sulfonic acid, ABS = p-aminobenzene sulfonic acid, MBS = p-methylbenzene sulfonic acid] were obtained under hydrothermal conditions. Complexes 1-3 were structurally characterized using X-ray single-crystal diffr...

The synthesis of new binucleating pyrazole-derived ligands (HL2, HL3) with bulky 2,6-diisopropylphenylimine side arms and backbone phenyl groups at the pyrazole-C4 and/or at the imine-C, which are derivatives from the known ligand HL1, is reported. Crystallographic analyses of three cobalt(II) complexes coordinated by ligands [L1-3]- reveal distinct metal to ligand ratios and different structur...

Two new complexes of bismuth nitrate with phthalic acid (H2phth) were synthesized by liquid state reaction. The complexes were characterized by chemical and elemental analyses, Fourier transformed infrared spectra, X-ray powder diffraction and thermgravimetry analysis. Their compositions are Bi(phth)(NO3)·4H2O and Bi(phth)(L-cys)0.5·H2O (L-H2cys = L-cystine), respectively. The crystal structure...

A series of 2D layered isostructural coordination complexes {[M3(L)2(H2O)6]·H2O}n (M = Mn (1), Mn0.7Co0.3 (2), Mn0.5Co0.5 (3), Mn0.3Co0.7 (4), and Co (5), respectively, H3L = 1-aminobenzene-3,4,5-tricarboxylic acid) have been synthesized under hydrothermal conditions, and applied to catalyze the reaction of degenerating organic dyes under visible light irradiation. The photocatalytic results in...

Analyses of the structure of two to four water molecule clusters confined between two benzene and between two naphthalene molecules have been performed using ab initio methods. The water clusters tend to maximize the number of hydrogen bonds via formation of a cyclic network. The oxygen atoms locate approximately in the middle of the confined geometry, and the dipole vectors arrange either para...

Although some of the platinum(II/IV) and rhodium(III) chemistry is considered ‘old’ and wellknown, the application of modern multinuclear NMR spectroscopic methods to this chemistry in solution reveals new details about their rich and relevant solution chemistry. In this paper we will briefly illustrate that the highly-sensitive 195 Pt NMR shielding is an excellent probe to explore aspects such...

Reaction of Cu(NO3)2·3H2O or Cu(CH3COO)2·H2O with the bis(2-hydroxyphenylimine) ligands H2L-H2L gave four Cu(II) complexes of composition [Cu2(L)(NO3)2(H2O)]·MeOH, [Cu2(L)2], [Cu2(L)2] and [Cu2(L)2]·2MeOH. Depending on the spacer unit, the structures are characterized by a dinuclear arrangement of Cu(II) within one ligand (H2L), by a double-stranded [2 + 2] helical binding mode (H2L and H2L) an...

Rhodium(III) complexes containing 2-(2'-pyridyl)quinoline (PQ) were prepared by the reaction of RhCl3 6H2O and PQ in 1:2 mole ratio followed by addition of an excess of sodium salts to the reaction mixture. The new complexes cisRhX2(PQ)2 Y (where X = NO2 , Y = PF6 ; X = SCN or NO3 , Y = Cl; X = Y = I) and cisRh(N3)2(H2O)2(PQ) PF6 were characterized by elemental analysis, conductivity measuremen...