Synthesis and Crystal Structure of 2-p-Methyloxyphenyl- 3a-（2-phenyl-1,2,3-triazole-4-yl）-3,4-dihydro-1,2,4- oxa-diazolo[4,5-d][1,5] Benzothiazepine

The title compound2-p-methyloxyphenyl-3a-(2-phenyl-1,2,3-triazole-4-yl)-3,4- dihydro-1,2,4-oxa-diazolo[4,5-d][1,5] benzothiazepine (C31H25N5O2S, Mr = 531.63) has been syn- thesized and its structure was determined by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P1 with a = 10.888(2), b = 15.115(3), c = 16.702(3), α = 99.90(3), β = 95.21(3), γ = 100.41(3)o, V = 2642.1(9) nm3, Dc = 1.336 g/cm3, Z = 4, F(000) = 1112, μ = 0.162 mm-1 ,λ(MoKα) = 0.071073 nm, R = 0.0357 and wR = 0.1126 for 10620 observed reflections with I > 2σ(I). X-ray analysis reveals that the molecular backbone consists of a tricyclic system with the central seven- membered ring in a twisted boat-like conformation.     

BaTiO3薄膜的Sol—gel法制备及对其介电特性的研究

以钛酸甲丁酯和乙酸钡为主要原料,以乙二醇独甲醚为溶剂,采用溶胶凝胶法在（１００）低阻硅片上制备了ＢａＴｉＯ３薄膜电容,用ＸＲＤ分析了该薄膜的结构,发现薄膜在硅片上取向生长,同时又对薄膜的介电性质进行研究,结果表明,薄膜的介电特性在高频范围内随频率的变化比较稳定,并讨论了晶化温度对薄电容的影响。     

钯与苯基羧酸1，2－二（二苯膦）乙烷混配合物的合成与表征

合成得到钯与苯基羧酸和１，２－二（二苯膦）乙烷配位的四种混配配合物，确定其化学组成为Ｐｄ（ＰＣＡ）２（ｄｐｐｅ）．用元素分析、红外、紫外和荧光光谱、摩尔电导、质子核磁共振和热重分析等手段对配合物进行了性质表征．     

钯与苯基羧酸和1,2—二（二苯膦）乙烷混配合物的合成与表征

合成得到钯与苯基羧酸和１，２－二９二苯磷）乙烷配位的四种混配配合物，确定其化学组成为Ｐｄ（ＰＣＡ）２（ｄｐｐｅ）。用元素分析，红外、紫外和荧光光谱、摩尔电导、质子核磁共振和热重分析等手段对配合物进行了性质表征。     

铜(Ⅱ)与N-苯甲酰缬氨酸和二胺类混配配合物的合成与表征

首次合成了四种铜(Ⅱ)与N-苯甲酰缬氨酸(Bval-O)与二胺(DA)类的混配配合物［Cu(Bval-O)₂(DA)］，DA=乙二胺(en)，2，2′-联吡啶(bpy),1，10-邻菲罗啉(phen)和2，2′-联喹啉(bq)。用元素分析、摩尔电导、红外和紫外光谱、磁矩及热分析等方法研究了配合物的组成和性质，表明配合物有两种结构类型，一类是畸变八面体，另一类为平面正方形。     

浅谈新课标下高师院校化学实验教学改革

从新的高中化学课程对教师实验能力的要求出发,结合高师院校化学实验教学现状,对如何加强高师院校化学实验教学,增强学生的实验技能,培养和发展综合能力进行了探讨。     

几何法在抛物线一类问题中的简解与结论推广

2012年各省市的高考卷中都注重了对抛物线方程与性质的考查,尤其是对过抛物线焦点的弦性质的考查.笔者在研究这类试题中发现除了"方程法"之外,"几何法"也是行之有效的方法.例(2012年安徽卷理科第9题)过抛物线y2=4x的焦点F的直线l交该抛物线于A、B两点,     

配位聚合物{[Co(4,4′-bpy)(H2O)4](Fum)·4H2O}n的合成和晶体结构

The complex {[Co(4,4′-bpy)(H₂O)₄](Fum)·4H₂O}_n(where 4,4′-bpy = 4,4′-bipyridine and Fum = fumarate) was synthesized and characterized by X-ray diffraction. The complex consists of one-dimensional chains containing cobalt(Ⅱ) ions bridged by 4,4′-bpy molecules. The six-coordination of Co²⁺ is achieved by means of four water molecules. The fumarate is not coordinated to cobalt ion while it forms hydrogen bonds with coordinated and non-coordinated water molecules and extends the structure into three-dimensional hydrogen bonding network. CCDC: 190488.