Showing papers in "Polyhedron in 2002"

TL;DR: In this paper, the synthesis, characterization and spectroscopic studies of Eu(III)-perchlorate complexes with amide ligands derived from N -[ x -methylpyridyl]acetamide where x = 3, 4 and 6.

TL;DR: In this article, bidentate isomeric NS and NS′ Schiff bases were derived from the condensation of S-benzyldithiocarbazate (SBDTC) with 5-methyl-2-furyldehyde and 2furyl-methylketone.

TL;DR: In this article, the electrochemical reduction of copper(II) complexes with salen Schiff-base ligands derived from ethylenediamine or (R,R) or (S,S)-1,2-diphenylethylenedienine and 5-methoxy, 5-bromo and 5nitrosalicylaldehyde have been studied by cyclic voltammetry in the potential range +1 to −2.3 V in dimethyl sulfoxide (DMSO) as a solvent.

TL;DR: In this article, Bis-chelated complexes of these two bidentate ligands, [M(NS)2], [M=Cu(II, Ni(II) and Zn(II), were synthesized.

TL;DR: The discovery of stable compounds containing SiC and SiSi bonds in 1981 led to the overturning of the double bond rule and paved the way for the recent explosive growth in multiple bond chemistry of the heavier elements as mentioned in this paper.

TL;DR: In this paper, the molecular structures of manganese(II) acetate with 2-pyrazine carboxylate carboxylic acid and chelidamic acid were determined by X-ray crystallography.

TL;DR: In this paper, the synthesis of symmetrically and unsymmetrically substituted zinc phthalocyanine (ZnPc) derivatives is reported, which are synthesized by ring expansion of subphthalicyanine complexes.

TL;DR: In this paper, the X-ray crystal structures of pyridino-(N,N′-bis(salicylidene)-1,2-ethylenediamine) zinc are reported.

TL;DR: A series of complexes of the type M(Phca2en)X2 have been synthesized and characterized by X-ray crystallography from single-crystal data as discussed by the authors.

TL;DR: In this paper, the known room-temperature phase was obtained and identified by infrared spectroscopy and X-ray powder diffraction, and reactions of commercial Nb 2 O 5 with aqueous MOH, M=Na, K, at 200°C and autogenic pressure provided new routes to different niobium compounds.

TL;DR: In this article, the X-ray crystal structures of N,N′-bis(salicylidene)-1,2-ethylenediamine and 1,3-propanediamine seem to be constrained by the chelate ring generated by the imine groups.

TL;DR: In this article, S-benzyl-β-N-(5-methyl-2-furylmethylene)dithiocarbazate (SBDTC) was derived by condensing SBDTC with 5-methyl 2-furladehyde (NS) and 2-methylfurlmethylketone (NS′).

TL;DR: In this article, the complete synthesis of differently substituted multifunctional metallo phthalocyanines (MPcs) (M=Ni, Zn, Co) bearing four 2−aminophenylsulfanyl or 2-aminophenoxy moieties and four chloro atoms on peripheral positions was described.

TL;DR: In this paper, neutral cis-dioxomolybdenum(VI) complexes with potentially pentadentate ONSNO donor bases of thiocarbodihydrazone of salicylaldehyde (H3L1), 5-bromo (H 3L2), 5 nitrogen carbodioxomer (5-nitro) and 2-hydroxyacetophenone (H4L4) acting as tridentate NO4S donor ligands have been synthesized.

TL;DR: The structures of the thallium(I) complexes with hydrotris(pyrazolyl)borate (TpTl, 2-Tl), and the modified Bp and Tp ligands dihydrobis(1,2,4-triazolyl)-borates (3-tl, 6-to 7-to 8-to 9-to 10-to 11-to 12-to 13-to 14-to 15-to 16-to 17-to 18-to 19-to-20-to 21-

TL;DR: An interesting series of eight neutral ternary Co(III) complexes of 2-hydroxyacetophenone N(4)-substituted thiosemicarbazones (H2L), bidentate heterocyclic bases 2,2′-bipyridine (bipy)/1,10-phenanthroline (phen) and azide with a general formula [MLB(N3)] were prepared by means of spectroscopic methods as mentioned in this paper.

TL;DR: In this article, two novel ligands, 2-(4′-dimethylaminophenyl)imidazo[4,5-f]1,10-phenanthroline (L1) and 3-ethyl-2-(4, 5-f]-1, 10-phenanol (L2), and their europium(III) complexes with dibenzoylmethanate (DBM), were synthesized and characterized by IR, UV-Vis and fluorescence spectroscopy, and thermogravimetric and differential thermal

TL;DR: In this paper, an N-benzoyl-N′,N′-diethylthiourea (3f) ligand was used in the solvent extraction of palladium(II) and gold(III) from aqueous chloride media (0.1 mol l−1 NaCl).

TL;DR: In this article, the polar organic molecule propane-1,3-diamine reacted with a 3-glycidoxypropyltrimethoxysilane silylant agent, previously anchored on a silica surface in a heterogeneous route to yield the product SiHT or with the same agent before immobilizing it on the support, in a homogeneous method, to produce a SiHM surface.

TL;DR: In this paper, a new 18-membered ligand, 2,3-dibromo-6,7,13,14,15,16,22,23-octahydro 14, 15-bis(hydroxyimino)-tribenzo [e,k,q] [1,4,10, 13, 7, 16,16] diazadioxadithiacyclooctadecine (LH4) containing three different heteroatoms (N, O ǫ, S

TL;DR: In this article, a brief report about the chemical behavior of the title compounds towards other Lewis-acidic or Lewis-basic or Lewisamphoteric species is given, where the silyl substituents are expected to migrate more easily than organyl groups, due to relatively weak ESi bonds formed to the heavier Group 14 congeners (tetrels).

TL;DR: In this paper, the reaction between Ph3SbBr2 and sodium salt of internally functionalized oximes in 1:2 molar ratio in refluxing anhydrous benzene afforded [Ph 3Sb{ON=C(R)Ar}(2)]

TL;DR: Several novel compounds with protonated 2,2′-biquinoline (biqui) and Keggin polyoxoanions (α-isomers) were synthesized and characterized by analytical, spectroscopic and X-ray diffraction techniques as mentioned in this paper.

TL;DR: In this article, the reaction of [M(sac)2(H2O)4]·2H 2O with 2-pyridylmethanol (mpy) resulted in the formation of the new complexes, which have been characterized by elemental analyses, magnetic measurements, FT-IR spectroscopy, thermal analysis and X-ray diffraction methods.

TL;DR: In this paper, an upfield shift in the CS resonance of thiones in 13 C NMR and downfield shifts in NH resonances in 1 H and 15 N NMR are consistent with the sulfur coordination to silver(I).

TL;DR: A number of new cyano(selenone)gold(I) complexes have been prepared and characterized by elemental analysis, IR and NMR methods for a series of selenones as mentioned in this paper.

TL;DR: In this article, three zinc(II) halide complexes ZnL2X2 (X=Cl, Br, I; L=4-methoxylbenzaldehyde thiosemicarbazone) have been synthesized and characterized by spectroscopic techniques.

TL;DR: In this article, the reaction of Co(O2CPh)2 with di-2-pyridyl ketone, (py)2CO, and NaN3 in DMF allows isolation of the tetranuclear compound.

TL;DR: In this paper, the sulfur-bridged dinuclear copper (I) complex, [CuBr(η2-Sμ-C5H5NS)(p-Tol3P)]2 (1) was prepared by the reaction of insoluble CuBr2(C5h5NS)2 {from copper(II) bromide and pyridine-2-thione(c5H 5NS) in ethanol} with excess tri-p-tolylphosphine (pTol 3P) in

TL;DR: A series of new binuclear ruthenium(II) complexes of the type {[RuHX(CO)(AsPh3)3] (X=H or Cl) with various bis(β-diketones) of the general formula [(RCO)(R′CO)CHCH(R″)CH(COR)(COR′)] as mentioned in this paper.