rac-Ethyl (8aR,9aS)-8a-methyl-8-(4-nitrophenyl)-9a,10-diphenyl-12-(p-tolyl)-9,9a-dihydro-8aH-di-1,2,4-triazolo[4,3-a:3',4'-d][1,5]benzodiazepine-6-carboxylate

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Phase equilibria in the sections InSe-PbSe and ln

Four phases [α(H), α(R), β(R) and γ(H)], with a composition In2Se3, were isolated and their transition temperature determined prior to the study of the phase equilibrium in the section In2Se3-PbSe. Two cross sections of the ternary Pb-ln-Se: InSe-PbSe and In2Se3-PbSe were studied using thermal analysis, X-ray diffraction crystallography and micrographie observations. They are both quasi- binary sections.The first one is an eutectic type diagram with an horizontal line at 572°C. The solubility limits are estimated to be 1 and 80 mol% PbSe at this temperature.The second section is more complicated. It shows a large solid solution based on PbIn2Se4 (50 mol% PbSe). In addition to the different In2Se3 phases, two new ternary compounds have been evidenced in the diagram: Pb3Inl4Se24 (30 mol% PbSe), stable between 695 and 715°C and Pb2In6Sell (40 mol% PbSe) which decomposes peritectically at temperature of 685°C. All these phases have been synthetized, including boundary solid solutions and crystallographically characterized

Crystal Structure of Ethyl 2-(5,1',5'-trimethyl-3,3'-bi-1H-pyrazol-1-yl)acetate

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Crystal structure of 1,1'-Bis(2-nitrophenyl)-5,5'-dipropyl-3,3'-bipyrazole.

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A redetermination of [N,N-bis(3,5-dimethyl-1H-pyrazol-1-ylmethyl-kappa N-2)-2-hydroxyethylamine-kappa N]-(3,5-dimethyl-1H-pyrazole-kappa N-2)nitratocopper(II) nitrate

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Synthesis, Crystal structure and catecholase activity of [N,N-bis(3,5-dimethylpyrazol-1-ylmethyl)-1-hydroxy-4-aminobutane] copper(II) dichloride

ABSTRACT: A new tripodal ligand, N,N-Bis(3,5-dimethylpyrazol-1-ylmethyl)-1-hydroxy-4-aminobutane (bpmhb), has been synthetized. Reaction of (bpmhb) with Copper (II) chloridedihydrate [CuCl2, 2H2O] in methanol produced the new complex Cu(bpmhb)Cl2. Thecomplex crystallizes in the monoclinic system, space group P21, the cell dimensions are a =7.990 Å, b = 14.620 Å, c = 8.590 Å, α = 90°, β = 95.80°, γ = 90°, V= 998.3 Å3 and Z =2.The single-crystal X-ray structure of the title compound, N,N-Bis(3,5-dimethylpyrazol-1-ylmethyl)-1-hydroxy-4-aminobutane Copper(II) dichloride shows that the surroundinggeometry of the copper (II) ion can be described as being intermediate between a distortedsquare pyramid and a trigonal bipyramid. The OH group function form an intramolecularhydrogen bonding with the chloride atom Cl1.With molecular oxygen as oxidant, this complex catalyzed the conversion of catechol toquinone with a good catalytic activity

Crystal Structure of 2-(1',5',5-trimethyl-3,3'-bi-1H-pyrazol-1-yl) ethanol.

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Hartree-Fock and density functional theory studies on tautomerism of 5,5o-diisopropyl-3,3o-bipyrazole in gas phase and solution.

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