Showing papers in "Inorganica Chimica Acta in 1991"

TL;DR: In this paper, the stabilities of trivalent metal ion complexes with tetraazamacrocyclic tetraacetates, 1,4,7,10-tetraazacyclodecane-N,N′,N″,N‴ -Tetraacetic acid (DOTA), TRITA and TETA have been determined in KCl electrolyte by potentiometric p[H] methods and by spectrophotometric determination of exchange with a competing ligand.

TL;DR: In this paper, the stability constants of the complexes of Fe(III), Ga(III) and In(III)-triacetic acid (NOTA) ions with the sexadentate macrocyclic ligand 1,4,7-triazacyclonane- N, N ′, N ″-triacid acid (notA) have been determined in KCl supporting electrolyte (0.100 M).

TL;DR: In this paper, the 1,2-dimethyl-3-hydroxy-4-pyridinone (DMHP) was used for the complexation of FeL 3.

TL;DR: In this article, the X-ray crystal structures of three basic zinc carboxylate complexes, [Zn4O(O2CR)6] where RC(CH3)3 (pivalate) or C6H5 (benzoate), were reported.

TL;DR: In this paper, the authors tried to find a general approach to the non-radiative transitions in a diverse series of Ce(III)-containing samples and found that Ce(3) luminescence will appear if the optical absorption of its surroundings is at high energy, preferentially in the vacuum ultraviolet.

TL;DR: In this paper, the tetraazamacrocyclic tetraacetates (L4−), 1,4,7,10-tetraazacyclodecane-N,N′,N″,N‴-Tetraacetic acid (DOTA), TRITA and TETA were determined by potentiometric titration in KCl electrolyte (0.100 M, 25.0 °C).

TL;DR: Several complexes of 2,2′-bipyridine, 1,10-phenanthroline and 2,9-dimethyl-1,10phenanthynthine with copper(II) dipeptides have been synthesized as mentioned in this paper.

TL;DR: In this article, the inactivity of the trans-isomer as an anti-cancer drug was explained by a kinetic explanation for the trans -isomer's inactivity as a cancer drug.

TL;DR: In this article, the reaction of 2-phenylpyridine (HL) with palladium(II) compounds has been investigated, and the crystal and molecular structure of (2-pyridyl}phenyl)palladium chloride tetramer (monoclinic, a=9.342(2), b=19.582(6), c=10.897(2) A, β=104.56 (2)°, P21/c) has been determined.

TL;DR: In this article, the rate constants for the anation of cis-PtCl(NH 3 ) 2 (OH 2 ) + with glycine (Nu=gly at pH=7.4), or sodium hydrogen malonate (Nnu=Hmal − at pH =4.3) can be represented by the equation k obs = k o + k Nu [Nu], where k o is an hydrolysis rate constant independent of the nucleophile concentration but dependent on pH.

TL;DR: In this paper, a ternary copper(II) complex with an aromatic diamine and an amino acid was investigated, and the presence of intramolecular stacking interaction between the aromatic rings of the diamine with the average spacing of 3.67 A from the vacant axial position.

TL;DR: In this article, an X-ray structure determination of the complex Ba(hfac)2·tetraglyme has been carried out, with the polyether ligand wrapped around barium in a plane, with one hfac ligand on top and another below.

TL;DR: The crystal structure of [(dien)Cu(μ-tp)cu(dien)](ClO4)2, where tp is the dianion of terephthalic acid and dien is diethylenetriamine, has been determined by direct X-ray methods.

TL;DR: The complexes cis-bis(acetato)bis(2-methylimidazole)copper(II) (1) as mentioned in this paper have been characterized by analytical, magnetic, spectroscopic and crystallographic methods.

TL;DR: The cyclometallated complex Ru(tt)(phbp) + (tt=4′-tolyl-2,2′:6′2″-terpyridine, phbp=6-phenyl-2.2′-bipyridine) has been synthesized and characterized by 1 H NMR, UV, FAB-MS spectral techniques and by elemental analysis as discussed by the authors.

TL;DR: In this paper, the synthesis and characterization of new derivatives of the isomers cis- (1) and trans-RuCl2(DMSO)4 (6) with monodentate nitrogen donor ligands (L) such as NH3, imidazole (Im) and benzimidazoles (BzIm), were reported.

TL;DR: In this article, two new compounds, chlorobis(triphenylphosphine)(methyl pyruvate thiosemicarbazone)copper(I), [Cu(Hmpt)2Cl] (A), and chlorobides (triphensylphophosphine) coppers(I) toluene solvate (2/1), [ Cu(PPh3)2(Hmmpt)Cl]·0.5C7H8 (B) have been synthesized and characterized using spectroscopic studies and

TL;DR: In this paper, the stability of dibenzo-30-crown-10 complexes in 1,2-dichloroethane, nitromethane and acetonitrile, acetone and dimethylformamide solutions was studied conductometrically.

TL;DR: The molecular structure of Y(CH3CO2)3·4H2O has been determined by X-ray diffraction as discussed by the authors, where the yttrium atoms are linked by two chelating bridging (polymeric) acetates.

TL;DR: In this paper, the anti-arthritic activity of R3PAu(2-TU), R  Et and Ph, was reported, and the attempted reaction between the bis chelated diphosphine complex [Au(dppe)2]Cl and the 2TU anion yielded a complex of stoichiometry in which there was no interaction between the nucleobase and the Au atom.

TL;DR: In this article, the structure of polymeric M3Se7X4 (M = Mo, W; X = Cl, Br) has been determined by X-ray structural analysis.

TL;DR: The diaminocarbene complexes cis-Cl2(PPh3)Pt[CN(Bu t )CH 2 CH 2 N H] (1) and cis-C 6 H 4 -p-OMe) CH 2CH 2 O ]2 (2) have been prepared by reaction of the corresponding isocyanide derivatives with aziridine/ClCH2CH2NH3+Cl− and Aziridine alone, respectively.

TL;DR: Two pyrazolate-bridged dicopper(II) complexes, [Cu2(LEP)2]2+ (1) and [cu2(BLEP)(OH)]2+(2), have been studied as catalysts for the autoxidation of 3,5-di-t-butylcatechol (DTBC) in this article.

TL;DR: The charge transfer compounds (TTF) 2FeCl3, TTF 3FeBr3 and TTF 4FeCl4·CH3OH were prepared from reaction of solutions of TTF (tetrathiafulvalene) and the metal halide as mentioned in this paper.

TL;DR: A polynuclear compound of Fe(II) chloride with oxygen donor ligands has been isolated as a colorless crystalline solid, Fe4Cl8(THF)6 (1), by the reaction of FeCl3 and Fe in THF.

TL;DR: In this paper, a model was fitted to a model for a dinuclear compound with 2J as the singlet triplet splitting and zJ′ the inter-dinuclear exchange, and the best fit was found for g = 2.11 and Ja/k = −51 K and Jb/k= −33 K.

TL;DR: The tetranuclear complex [{Cu(mimt)} 4 ] as mentioned in this paper is a diamagnetic diamagnetic complex that has been electrochemically synthesized in acetonitrile using a copper anode, a platinum cathode and the parent ligand, 1-methylimidazoline-2(3 H )-thione (mIMtH), with tetrabutylammonium tetrafluoroborate as supporting electrolyte.

TL;DR: In this article, established ligand design principles are extended to transuranium elements and were tested out for Pu(IV) complexation by the trihydroxamic acids, desferrioxamine B (DFB) and N,N′,N″ -tris[2-( N - hydroxycarbamoyl)ethyl]-1,3,5-benzenetricarboxamide (BAMTPH).