铋配合物[Bi(S2CNC5H10)2(NO3)]·[1，10-Phen]·0.5H2O的合成及晶体结构

The bismuth complex with dithiopiperdylcarbamate [Bi(S₂CNC₅H₁₀)₂(NO₃)]·[1，10-Phen]·0.5H₂O was synthesized. The crystal and molecular structure were determined by X-ray single crystal diffraction. The crystal belongs to monoiclinic with space group C2/c, a=3.140(2) nm, b=1.176 4(9) nm, c=2.021 6(15) nm, β=103.081(12)°, V=5.713(7) nm³, Z=8, F(000)=3064, D_c=1.815 g·cm^-3, μ=6.502mm^-1. The final R₁=0.0332, wR₂=0.040 3. In the complex, the bismuth atom is eight-coordinated in a capped distorted pentagonal bipyramidal geometry. CCDC: 222655.     

One-dimensional Infinite Chain Organotin Compounds: Synthesis and Structural Characterization of Triphenyltin Thiazole-2-carboxylate and Triphenyltin 3-Pyridinylcarboxylate

ＩｎｔｒｏｄｕｃｔｉｏｎＯｒｇａｎｏｔｉｎｃａｒｂｏｘｙｌａｔｅｓａｒｅｗｉｄｅｌｙｕｓｅｄａｓｂｉｏｃｉｄｅｓ ,ｆｕｎｇｉｃｉｄｅａｎｄａｓｈｏｍｏｇｅｎｅｏｕｓｃａｔａｌｙｓｔｓｉｎｉｎｄｕｓｔｒｙ .1 6Ｉｎｏｒｄｅｒｔｏｅｘｐｌｏｒｅｔｈｅｒｅｌａｔｉｏｎｓｈｉｐｓｂｅｔｗｅｅｎｂｉｏｌｏｇｉｃａｌａｃｔｉｖ ｉｔｙａｎｄｓｔｒｕｃｔｕｒｅ ,ａｎｕｍｂｅｒｏｆｓｕｃｈｍｏｌｅｃｕｌｅｓｈａｖｅｂｅｅｎｓｙｎｔｈｅｓｉｚｅｄａｎｄｓｔｕｄｉｅｄｉｎｒｅｃｅｎｔｙｅａｒｓ .7 15Ｓｔｕｄｉｅｓｏｎ…     

Determination of the standard molar enthalpy of formation of the ternary complex of neodymium with vitamin B3 and 8-hydroxylquinoline by microcalorimetry

A novel solid ternary complex, [Nd(C₆H₄NO₂)₂·C₉H₆NO·2H₂O], was synthesized in a water bath (333.15 K) by three kinds of reagents: neodymium chloride, vitamin B3 (C₆H₅NO₂), and 8-hydroxylquinoline (C₉H₇NO). Its composition and structure were characterized by elemental analysis, IR spectra, UV spectra, molar conductance, and thermogravimetric analysis. During the process of coordination, C₆H₅NO₂ was bidentate-coordinated with Nd³⁺ in the form of an acidic group by removing the proton; hydroxyl oxygen atom and heterocyclic nitrogen atom of C₉H₇NO formed a chelate ring. Particularly, in this article, a thermochemical cycle in the calorimetric solvent (V _HCl:V _DMF:V _EtOH = 3:1:1) was designed on the basis of Hess’s law. At 298.15 K, the dissolution enthalpies of the reactants and products were determined by a advanced solution–reaction isoperibol microcalorimeter, respectively. According to the above results and relevant literature data, the standard molar enthalpy of formation of [Nd(C₆H₄NO₂)₂·C₉H₆NO·2H₂O], was estimated to be $ \Updelta_{f} H_{m}^{\Uptheta} $ [[Nd(C₆H₄NO₂)₂·C₉H₆NO·2H₂O(s)], 298.15 K] = ?(2,129.1 ± 2.5) kJ mol^?1.     

μ-氧-双[三(对氟苄基)锡]的合成、表征及晶体结构

The μ-oxygen-bis[tri(p-fluorobenzyl)tin] was synthesized. The structure were characterized by elementary analysis, IR and ¹H NMR and the crystal structure were determined by X-ray single crystal diffraction. The crystal of the title compound belongs to rhombohedral with space group R, a=1.346 4(4), b=1.346 4(4), c=1.772 9(7) nm, α=90°, β=90°, γ=120°, Z=3, V=2.783 2(15) nm³, D_c=1.625 g·cm^-3, μ(Mo Kα)=1.408 mm^-1, S=1.088, F(000)=1 350, R₁=0.027 5, wR₂=0.065 9. In compound, the tin atom has a distorted tetrahedral coordination configuration. CCDC: 257079.     

Algebraic Bethe Ansatz for the Osp(1|2) Model with Reflecting Boundaries

In the framework of graded quantum inverse scattering method, we obtain the eigenvalues and the eigenvectors of the Osp(l|2) model with reflecting boundary conditions in FBF background. The corresponding Bathe ansatz equations are obtained.     

Standard molar enthalpy of formation of [(C12H8N2)2Bi(O2NO)3] and its biological activity on Schizosaccharomyces pombe

The title complex [(C₁₂H₈N₂)₂Bi(O₂NO)₃] was synthesized by reaction of 1,10-phenanthroline (phen) and Bi(NO₃)₃·5H₂O. The structure of the complex was characterized by single-crystal X-ray diffraction, IR spectroscopy, and elemental analysis. An advanced solution-reaction isoperibol microcalorimeter was applied to determine the standard molar enthalpies of formation at 298.15 K of the complex and Bi(NO₃)₃·5H₂O, giving –(798.92 ± 5.99) and –(1986.87 ± 0.20) kJ mol⁻¹, respectively. The biological effect of the complex was evaluated by microcalorimetry on the growth of Schizosaccharomyces pombe (S. pombe). According to thermogenic curves, the corresponding thermokinetics and thermodynamic parameters were derived. The complex had good bioactivity on the growth metabolism of S. pombe, with the value of IC₅₀ being 2.8 × 10⁻⁵ mol L⁻¹.

     

Syntheses, Spectroscopic Properties and Crystal Structures of （2-Cl-C6H4CH2）3SnS2CN（C5H10） and （2-Cl-C6H4CH2）3SnS2CN（C4H9N）

1 INTRODUCTION The chemistry of organotin(IV) complexes was extensively studied due to their biological activity and coordination chemistry[1～7]. More recently, phar- maceutical properties of alkyltin(IV) complexes with dithiocarbamate ligands have bee…     

加速实验法测定阿司匹林药物有效期

在加速实验法测定阿司匹林药物有效期化学动力学综合实验中, 以阿司匹林水溶液为研究对象, 采用双波长紫外分光光度法消除水解产物的干扰以进行阿司匹林含量测定。实验结果表明选择275 nm与316 nm 2个波长处的吸光值差可消除水杨酸对阿司匹林含量测定的干扰, 方法简便, 结果合理。     

Synthesis, Spectroscopic Properties and Crystal Structures of Dibenzyltin（IV） Dithiobenzoate and Chlorodibenzyltin（IV） Thiobenzoate

Two dibenzyltin(IV) complexes with thiobenzoate ligand, (PhCH2)2Sn(SOCPh)2 (1) and (PhCH2)2Sn(C1)SOCPh (2), have been synthesized by the reaction of dibenzyltin(IV) dichloride with thiobenzoic acid in the presence of organic base Et3N and characterized by IR, ^1H NMR spectroscopy and elemental analysis. Their crystal structures were determined by X-ray single crystal diffraction analysis. In the crystals of 1, the tin atom is six-coordinated in a distorted octahedron configuration. In the crystals of 2, the molecular packing in unit cell reveals that the two adjacent molecules are symmetrically linked to each other to form a dimer with intermolecular Sn…C1 distances of 0.3591 (2) nm and the tin atom is five-coordinated in a distorted trigonal bipyramid configuration.     

Synthesis, Properties and Crystal Structure of Seven-coordinated Organotin Complex [~nBu_2Sn(OOCC_5H_4N-2)_2(H_2O)]

ＩｎｔｒｏｄｕｃｔｉｏｎＯｒｇａｎｏｔｉｎ(ＩＶ)ｄｅｒｉｖａｔｉｖｅｓｏｆｃａｒｂｏｘｙｌｉｃａｃｉｄｗｅｒｅｅｘｔｅｎｓｉｖｅｌｙｓｔｕｄｉｅｄｄｕｅｔｏｔｈｅｉｒｂｉｏｌｏｇｉｃａｌａｃｔｉｖｉｔｉｅｓ .1 5Ｉｎｒｅｃｅｎｔｙｅａｒｓｍｏｒｅａｎｄｍｏｒｅｒｅｐｏｒｔｓｏｎｔｈｅｓｙｎｔｈｅｓｉｓ ,ａｎｔｉ ｔｕｍｏｕｒａｃｔｉｖｉｔｉｅｓ ,ｂｉｏｃｉｄａｌａｃｔｉｖｉｔｉｅｓ ,ａｎｔｉｂｉｏｔｉｃａｃｔｉｖｉｔｉｅｓａｎｄｓｔｒｕｃｔｕｒａｌｅｌｕｃｉｄａｔｉｏｎｏｆｖａｒｉｏｕｓｏｒｇａｎ…