V-Cu-S异金属簇合物的研究I. [VS4(CuPPh3)4Br]的合成和晶体结构

以(NH4)3VS4为起始原料, 用低温固相法合成了标题簇合物, 并测定其晶体结构。晶体属空间群P1, 单胞参数a=1.3139(10), b=2.5113(170, c=1.1800(8)nm,α=93.04(6), β=114.86(5), γ=96.71(7)°, Z=2, μ=21.4cm^-^1, R=0.084。在簇合物中, VS4^3^-保持较严格的四面体构型, 并螯合四个Cu(I)离子连同桥Br^-离子形成具有额外面的立方烷簇骼[VS4Cu4Br]。     

Ceric（Ⅳ）-mediated Oxidative Addition of 1, 3-Dicarbonyl Compounds to MCPs： A Facile Access to Dihydrofuran Derivatives Incorporating Cyclopropyl Groups

Alkylidenecyclopropanes undergo ceric（Ⅳ） ammonium nitrate （CAN）-mediated addition reaction with 1,3-dicarbonyl compounds leading to dihydrofuran derivatives incorporating cyclopropyl groups in moderate yields.     

A Convenient Synthesis of Antibacterial Linezolid from （S）-Glyceraldehyde Acetonide

Oxazolidinones as a new class of synthetic antimicrobial agents are active against numerous multidrug-resistant Gram-positive organisms1. Linezolid 1 as the promising candidate of this family works effectively against numerous serious Gram-positive human …     

Synthesis of New Soluble Polyarylates Containing Phthalazinone Moiety

Wholly aromatic polyesters (polyarylates) have good thermal stability and mechanical property, therefore they are applied widely in the aviation, automobile, and electronic industries. However, most of polyarylates have a drawback in processing due to the…     

Syntheses and Crystal Structures of Two Novel Cobalt（Ⅱ） Complexes with 2-Amino-5-substituted-l,3,4-thiadiazole as Ligands

Two novel cobalt（Ⅱ） compounds were obtained and characterized by X-ray sing- le-crystal diffraction, IR, 1H NMR and elemental analysis. Compound 1 crystallizes in monoclinic, space group P21/n, with a = 18.046（4）, b = 11.335（3）, c = 19.157（5）A, β = 92.707（3）°, Z = 4, V = 3914.4（16） A3, Mr = 968.56, Dc = 1.644 g/cm3, μ = 1.378 mm^-1, F（000） = 1960, the final R = 0.0367 and wR = 0.0895. The crystal of compound 2 is of monoclinic, space group P211c with a = 8.7253（10）, b = 10.9031（13）, c = 18.235（2）A,β = 93.2210（10）°, Z = 4, V = 1732.0（3）A3, Mr = 464.21, Dc = 1.780 g/cm3,μ = 1.560 mm-1, F（000） = 932, the final R = 0.0322 and wR = 0.0743.     

螺浆烷

本文综述了螺浆烷的最新进展,详细叙述了螺浆烷的合成、结构与性质,特别是小螺浆烷的张力能及桥头-桥头碳-碳单键的价键状态。