Showing papers in "Inorganica Chimica Acta in 2007"

TL;DR: In this article, the photostabilities of sunscreen organic active agents in neat polar and apolar solvents and in actual commercial formulations have been examined, confirming the recent findings by Sayre et al. that the titanium dioxide particle surface was modified to produce TiO2 specimens of considerably reduced photoactivity.

TL;DR: In this paper, the effect of relatively low levels of strontium concentration on the dimensions of the coherent length of the perfect crystalline domains and on the morphology of the nanocrystals is observed.

TL;DR: In this article, dissymmetric tridentate Schiff base ligands, containing a mixed donor set of ONN and ONO were prepared by the reaction of benzhydrazide with the appropriate salicylaldehyde and pyridine-2-carbaldehyde and characterized by FT-IR, 1H and 13C NMR.

TL;DR: In this paper, the authors analyzed metal-ligand bonding in metallocenes using density functional theory (DFT) at the OPBE/TZP level, and found that the covalent bonding is larger for low spin states than for higher spin states, due to better suitability of acceptor dorbitals of the metal in the low spin state.

TL;DR: Mesoporous Ln(III)-TiO 2 (Ln = Tb, Eu, Sm) composites have been successfully synthesized by using sol-gel technique.

TL;DR: The 1,3,5-triazine ring can experience coordination bonds, hydrogen bonding, electrostatic and charge-transfer attraction, and aromatic stacking interactions as mentioned in this paper, and a thorough search in the Cambridge Structure Database clearly shows that it can be involved in all the categories of supramolecular interactions aforementioned.

TL;DR: In this paper, the authors present a review of recent studies on the intercalation of azoic and xanthenic dyes and donor-acceptor couples into the interlayer region of hydrotalcite-like compounds (HTlc).

TL;DR: In this article, six transition metal complexes (M =Cu(II), Ni(II) and Mn(III)) of tridentate (H2L1, HL2) and/or bidentate(HL3, HL4) Schiff-base ligands, obtained from the condensation of salicylaldehyde with glycine, N-(2-aminoethyl)morpholine, 4-(2amino methyl)phenylic acid and 4-( 2-aminosulfamide, respectively, were synthesized and structurally determined by single-crystal X

TL;DR: The neutral mononuclear copper(II) complexes with the quinolone antibacterial drugs, pipemidic acid and N-propyl-norfloxacin, in the presence or absence of nitrogen-donor heterocyclic ligands, 2,2′-bipyridine, 1,10-phenanthroline or 2, 2′-dipyridylamine, have been prepared and characterized spectroscopically.

TL;DR: The first examples of heteronuclear dipicolinate compounds with 3D metals were obtained by self-assembly synthesis in aqueous solution at room temperature, and characterized by IR, UV-Vis and atomic absorption spectroscopies, elemental and X-ray diffraction single crystal (for 1 and 2) analyses as mentioned in this paper.

TL;DR: In this paper, it was shown that acid-induced deactivation suggests an explanation for the previously reported lack of O2 evolution from aqueous solutions of 1 with Ce4+ as oxidant.

TL;DR: The polymeric coordination compound of formula [Tm(hfac)3(NITPhOPh)]∞ has been synthesized and found to belong to the only reported family of isostructural Single Chain Magnets.

TL;DR: In this paper, a tridentate dibasic ONO donor hydrazone ligand derived from the condensation of benzoylhydrazine with either 2-hydroxyacetophenone or its para substituted derivatives (H2L1-4, general abbreviation H2L) has been used as primary ligands and 8-hydroxquinoline (Hhq, a bidentate monobasic OnO donor species) was used as auxiliary ligand.

TL;DR: In this paper, the crystal structures and spectroscopic properties of monomeric, dimeric and polymeric copper(II) chloroacetates with isonicotinamide (INA), N-methylnicotinamide(MNA), and N,N-diethylnicotine (DENA) were characterized by electron paramagnetic resonance (EPR) and IR spectroscopy.

TL;DR: Calixarenes are useful building platforms in the design of multichromophoric systems in which photoinduced phenomena (electron, charge and proton transfers, excimer formation and resonance energy transfer) are controlled by ions.

TL;DR: In this paper, the synthesis and characterization of three simple 1:2 silver(I) pyridine adducts of different counter-anions, [Ag(py)2]-· X− (X = ClO4, 1; BF4, 2; PF6, 3), are reported.

TL;DR: In this paper, the synthesis and characterization of thiones and selones having N,N-disubstituted imidazole are described, which suggest that these compounds exist as zwitterions in which the selenium atom carries a large negative charge.

TL;DR: In this paper, a complete physico-chemical study of the chelation of iron(III) by catechin (L1), an abundant polyphenol in green tea, is reported.

TL;DR: A series of organotin (IV) compounds of the type [R3SnL]2, R is Me (1), Bu (2), [R2SnL], R is Ph (3), Me (4), Bu(5), L is pyruvic acid thiophene-2-carboxylic hydrazone, and R2snL as mentioned in this paper have been synthesized in 1:1 molar ratio.

TL;DR: In this article, the effect of bicarbonate on the rates of the H 2 O 2 oxidation of cysteine, gluthathione, and N -acetylcysteine to the corresponding disulfides was investigated.

TL;DR: In this article, six 2D and 3D supramolecular complexes [Cu(L1)(O2CCH3)2] have been characterized by X-ray diffraction crystallography.

TL;DR: In this article, four new coordination complexes, NiII(L)2 (1), [CoIII(L 2]ClO4 (2), [Zn(HL)(L), ClO4·H2O (3), Zn(L, 2) and ClO 4·H 2O (4), have been synthesized and systematically characterised by elemental analysis, spectroscopic studies and room temperature magnetic susceptibility measurements.

TL;DR: In this article, Europium complexes featuring fluorinated β-diketonate ligands [thenoyltrifluoroacetone (tta), 4,4,4-triflamoro-1-phenyl-1,3-butanedione (btfac), and 1,1,1.5,5, 5,5-hexafluoro-2, 4-4-pentanedionate (hfac)] and nitrogen p,p′-disubstituted bipyridine and phenanthroline ligands were

TL;DR: In this article, three new heteroleptic Cu(I) complexes containing one phenanthroline and one diphosphine type ligand ([Cu(N-N)(P-P)]+) have been prepared.

TL;DR: In this article, the synthesis, characterization and catalytic activity of a series of tetra-halogeno-dimethyl salen cobalt (II) complexes with Schiff bases are reported.

TL;DR: In this paper, the photophysical properties of two metal complexes, [M(tpy-py) 2 ][PF 6 ] 2, where tpy-pyridyl unit on the 4′-position of each tpy ligand contains a basic nitrogen atom, were investigated.

TL;DR: In this article, the trend of the reaction of R2SnCl2acceptors toward a given nickel Schiff base complex is investigated in chloroform as a solvent by means of UV-Vis spectrophotometeric analysis.

TL;DR: In this article, the X-ray single crystal structure determination, low temperature magnetic measurement and thermal study were performed to identify dinuclear copper(II) complexes bridged by oxalate and squarate dianions, while 3 is a hexanuclear species formed by three Cu(pdc)(H2O)-(4,4′-bipy)-Cu(p dc) fragments, connected through long Cu-O(Pdc) bonds in a centrosymmetric arrangement.

TL;DR: A short review of molecular logic can be found in this article, where the original demonstration of a few basic logic operations has now been extended to cover many of the one-and two-input varieties and even some of the three-input types.

TL;DR: In this paper, the reduction of oxovanadium(V) complexes to vanadium(IV) species occurs at relatively positive potential, which is independently verified by ESR spectroscopy.