Synthesis,Crystal Structure and Luminescent Property of a Novel Pt（Ⅱ） Complex with Weak Metal-metal Interaction

The title complex cis-bis（tetrahydrothiophene）-bis（nitrate） platinum（H）, （tht）2Pt（NO3）2, was the reducing product from potassium hexachloroplatinate（IV） K2PtC16 where the platinum is tetra-valenced. Crystal data for CsH16N206PtS2： monoclinic, space group P21/c, a = 9.8833（5）, b = 8.6744（4）, c = 18.6407（9）A,β = 114.401（3）°, V = 1455.35（12）A3 Z = 4, Mr = 495.44, Dc = 2.261 g/cm3, F（000） = 944,μ = 9.950 mm-1, 2（MoKa） = 0.71073 A, T= 293（2） K, 2θmax = 54.96°, GOOF = 1.033, R = 0.0350 and wR = 0.0785 for 2572 observed reflections with I 〉 2σ（I）. X-ray diffraction studies reveal that the title complex has interesting weak metal-metal interactions and two molecules linked by metal-metal interaction exist as a group. Luminescent spectrum illuminates red emission of the complex at room temperature.     

Studies on Enantioselective Effect of Chiral Titanate Reagents on the Synthesis of Substituted Benzhydrols

Chiral titanate reagents were prepared for inducing asymmetric syntheses of substituted benzhydrols from Grignard reagents and aldehydes. The solvents, reaction temperature and exchange of reactants by crossing experiments were investigated. Favorable attack of the nucleophile upon the aromatic aldehydes' prochiral face was proposed, the absolute configurations of the synthesized benzhydrols were suggested, and a preliminary reaction mechanism was described.     

Single Crystal Si Layers on Glass Fabricated by Hydrophilic Fusion Bonding and Smart-Cut Technology

A single crystal Si thin film on a glass substrate has been obtained successfully by hydrophilic fusion bonding and the smart-cut technology. Tensile strength testing shows that the bonded interface has strong adhesion and the bonding strength is about 8.7MPa. Crystallinity and microstructure of the samples have been characterized by transmission electron microscopy (TEM). Electrical properties have also been investigated by Hall measurements and four-point probe. The mobility of the transferred Si layer on glass is about 122cm^2//V.s. The results show that the single-crystal silicon layer transferred onto glass by direct bonding keeps good quality for the applications of integrated circuits, transducers, and fiat panel display.     

Ba-Y-Cu-O的超导临界温度随压力变化的理论解释

采用Anderson晶格哈密顿量,根据文献[6]提出的非电-声子超导机制理论,解释了Ba-Y-Cu-O的超导临界温度随压力的变化。 关键词：     

HL-1装置石墨孔栏杂质收集探针的俄歇电子能谱及孔栏表面分析

在HL-1装置的输样机构上安放了硅收集探针。经过55次高功率托卡马克放电辐照后,对于因石墨孔栏被腐蚀而溅射蒸发,并沉积在硅收集探针上的杂质涂层进行了俄歇电子能谱(AES)分析,获得无主动冷却石墨孔栏被腐蚀而溅射蒸发出来的碳杂质流通量约为8×10~(13)cm~(-2)·S~(-1),金属重杂质镍和铬较GH39高镍钢孔栏时降低44％左右。     

单、双电荷离子与原子碰撞中的激发态和发射截面比较

本文给出了单、双电荷离子和He,Ne,Ar,碰撞过程中产生的激发态的实验结果。He^q+,Ar^q+(q=1,2)离子束实验室能量为(70—170)×q keV。光学测量由光学多道分析系统(OMA)完成,波长范围为200—800nm。观察到单、双电荷离子和原子碰撞中各种不同的激发过程,讨论了发射截面和入射离子电荷数、势能亏损的依赖关系。 关键词：     

强激光辐照非均匀等离子体引起临界点密度变陡

本文在临界密度区域内激光场趋于零的假设下,系统地研究了由强激光辐照非均匀等离子体引起临界密度变陡的现象,给出了较为精确、完备的描述等离子体密度结构的各种参数和等离子体密度的坪台结构。     

阻尼谐振子的严格波函数

对与速度成正比的阻尼谐振子，通过正则变换，采用路径积分方法，得出了阻尼谐振子的严格波函数，还讨论了阻尼谐振子的坐标、动量的零点涨落. 关键词：     

与波动方程边界控制有关的一类本征值问题

本文在高维空间情形，研究了大型空间结构和柔性机器人的控制中提出的一类新型的包含边界双线性形式的本征值问题，利用Ｐｏｈｏｚａｅｖ恒等式，分析了本征元的边界形态．     

铌酸钡钠和钽酸锂铁电相变的实地观察

本文报道了用透射电子显微镜实地观察铌酸钡钠和钽酸锂铁电相变的实验结果。在室温电畴的尺寸为0.2—1μm。当温度增加到接近居里点时,形成准规则排列的微畴结构,其尺寸为几百埃,实验结果用稍微修正了的模型进行了解释。在钽酸锂中当接近铁电相变温度时,发现了强烈的辐照损伤,这可能跟相变的软模有关。 关键词：