冠醚环化二硫烯双核Au(I)配合物的合成、结构及电化学性质

合成了含有冠醚环化二硫烯的双核Au(I)配合物[(30-C2S4)Au2(PPh3):](1),[(40-C2S4)Au2·(PPh3)2](2),[(30一C6-S8)Au2(Pph3)2](3)和[(40-C6-S8)Au2(PPh3)2](4)以及富硫配合物[(btdt)Au2·(PPh3)2](5).通过x射线...     

基于冠醚环化二硫纶镍配合物的合成及其光电性能

配体5,8,11,14-四氧-2,17,19,21-四硫-［16.3.0］-冠-1(18)-醚-20-氧酮和Ni(dbbpy)Cl₂(dbbpy=4,4′-二-叔丁基-2,2′-联吡啶)在CsOH的MeOH/THF溶液中反应合成了一个新型二硫纶镍(Ⅱ)配合物［Ni(dbbpy)(4OC₂S₄), 1］,其结构经¹H NMR, IR, MS和元素分析表征。并初步测定了其光电响应性质。结果表明：1对Na⁺有较明显的响应,△E₁^1/2=100 mV(20倍Na⁺)和125 mV(30倍Na⁺); 1在室温有明显的溶剂变色现象,加入Na⁺后紫外最大吸收峰向高能量方向蓝移。     

多硫二硫烯铜配合物(n-Bu4N)[Cu(cddt)2]和(Ph4P)[Cu(cddt)2]的合成、表征及其结构

Two copper complexes with a new multi-sulfur 1,2-dithiolene ligand, C[Cu(cddt)₂] (C=tetrabutylammoni-um, n-Bu₄N⁺; tetraphenylphosphonium, Ph₄P⁺; cddt = 4a, 6, 7, 7a-5H-cyclopenta[b]-1,4-dithiin-2,3 dithi-olate) have been synthesized and characterized by electrochemical studies, IR, EA, etc. The structure of (Ph₄P)[Cu(cddt)₂] was determined by single crystal X-ray analysis. The complex was crystallized in the triclinic, space group P1 with the cell dimensions a=10.460(2)?, b=13.000(3)?,c=16.270(3)?, α=86.68(3)°,β= 71.92(3)°,γ=66.66(3)° and Z=2. R₁=0.0548, wR₂=0.1358 for 6786 independent reflections. The four S atoms surround the Cu atom [CuS₄] core is a square-planar environment.     

铜配位聚合物[Cu(C5H6S5)(SCN)]∞的合成和结构研究(英)

The Copper(Ⅰ) supramolecular complexes of 4,5-bis(methylthio)-1,3-dithiole-2-thione (C₅H₆S₅), [Cu(C₅H₆S₅)(SCN)]_∞ 1 and [Cu(C₅H₆S₅)I]_∞ 2, have been prepared and characterized. X-ray structure analysis for complex 1 reveals that the infinite chain structure with polymeric stairs of different lengths is formed through the coordination mode (μ₃) of the thiocyanate bridges. The shorter interchain S…S contacts give rise to a three-dimensional network structure. CCDC: 215668.     

锂离子电池正极材料研究的新动向和挑战

调研了全球锂离子电池正极材料LiCoO2、LiNiO2、LiMn2O4、LiFePO4 LiNi0.8 Co0.2 O2和Li(CoMnNi)1/3O2的学术研究论文和技术专利申请与授权数按年和语言分布情况。综述了前4种材料作锂离子电池正极材料尚存在的问题和解决对策进展。例如,通过掺杂其他元素、表面包覆、细化材料颗粒及改善正极结构设计来提高正极材料的充放电容量、寿命、功率密度和电池高功率密度使用时的安全性。