金属硫族化合物CsSb2(Se2)0.5Se3的溶剂热合成及其晶体结构分析

以有机溶剂热生长技术(Solvothermal Technique)在180 ℃乙二胺(en)溶液中以SbCl₃与碱金属硒化物Cs₂Se和Se在密闭容器中反应7 d,制备出新的金属硫族化合物CsSb₂(Se₂)_0.5Se₃。以单晶X射线衍射技术测得晶体结构属三斜晶系,空间群为P1,晶胞参数：a=0.653 0(2) nm,b=0.707 1(3) nm,c=0.979 9(4) nm,α=80.37(3)°,β=86.28(3)°,γ=74.61(3)°,V=0.430 0(3) nm³,Z=2。     

The Reaction of Octacarbonyldicobalt and Dipropargyl Malonate

1　ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｃｈｅｍｉｓｔｒｙｏｆａｌｋｙｎｅｓｃｏｏｒｄｉｎａｔｅｄｔｏｃｏｂａｌｔｐｒｏｖｉｄｅｄａｖｅｒｙｄｙｎａｍｉｃｄｅｖｅｌｏｐｍｅｎｔｉｎｒｅｃｅｎｔｙｅａｒｓ[1～ 5] .Ｔｈｅｍａｉｎｄｒｉｖｉｎｇｆｏｒｃｅｏｆｔｈｉｓｒｅｓｅａｒｃｈａｃｔｉｖｉｔｙｈａｓｂｅｅｎｔｈｅａｂｉｌｉｔｙｏｆａｌｋｙｎｅｓｃｏｏｒｄｉｎａｔｅｄｔｏｃｏｂａｌｔｃａｒｂｏｎｙｌｏｒｃｙｃｌｏｐｅｎｔａｄｉｅｎｙｌｃｏｍｐｌｅｘｅｓｏｆｇｉｖｉｎｇｈｉｇｈｌｙｒｅｇｉｏｓｅｌｅｃｔｉｖ…     

以有机溶剂热生长技术制备金属硫族化合物 [Mn(en)~3]PdSe~2及其晶体结构分 析

以有机溶剂热生长技术(solvothermaltechnique),即在180℃乙二胺(en)溶液中,以MnCl~3,PdCl~2,K~2Se在密闭容器中反应7d,制备出新的硫族化合物[Mn(en)~3]PdSe~2,其阴离子基团为[PdSe~2]^2^-,阳离子基团为过渡金属Mn与乙二胺(en)的配合物：[Mn(en)~3]^2^+。以单晶X射线衍射技术解得该晶体结构属正交晶系,空间群为Pbcn,[Mn(en)~3]PdSe~2(Ⅰ)的晶胞数据：a=1.1484(2),b=1.5057(3),c=0.93622(19)nm,Z=4。     

Synthesis and Structure of Ba3La2（BO3）4 Crystal

1 INTRODUCTION At present the researches on more efficient solid-state laser materials become more important for the rapid development of diode-laser pumped solid-state laser. More researches have been devoted to the double borate compounds RX3(BO3)4 (R = Y, La, Gd and X = Y, Al, Sc), some of which exhibit good chemical and physical properties[1～10]. The rare earth and alkali-halide double borates M3Ln2(BO3)4 (M = Ca, Sr, Ba and Ln = LaLu and Y) were reported in literatures[11…     

Crystal Structures of Urokinase-type Plasminogen Activator in Complex with 4-（Aminomethyl） Benzoic Acid and 4-（Aminomethyl-phenyl）-methanol

Urokinase-type plasminogen activator （uPA） is a trypsin-like serine protease and plays a key role in several biological processes, including tissue remodeling, cell migration, and matrix degradation. The inhibitors of uPA have been shown to prevent the spread of metastasis and tumor growth, and accordingly uPA is widely recognized as a target for the treatment of cancer. In this work, we report the crystal structures of the complexes of uPA with its inhibitors： 4- （aminomethyl）-benzoic acid （AMBA） and 4-（aminomethyl-phenyl）-methanol （AMPM）, both at a resolution of 2.35 А. The inhibitory constants of these two inhibitors were measured by a chromogenic competitive assay, and it was found that AMBA is a better inhibitor for uPA （Ki = 2.68 mM） than AMPM （Ki = 13.99 mM）. The structural study shows that the binding mode of inhibitor AMBA on uPA is similar to that of AMPM on uPA, both docked into the active site S1 pocket of uPA. Structural details of these complexes are provided to explain the difference of inhibitory constants.     

Synthesis and Characterization of Linked Clusters Capped by Alkylidyne

1 INTRODUCTION Constructing higher nuclearity clusters with well-defined dimensions and structures provide a rather active field of chemistry with potential applications in areas including nanotechnology, molecular recognition and catalysis[1~4]. A continuing effort has been directed toward developing a better methodology for systematic synthesis of supracluster compounds through molecular design [5,6]. On the basis of extensive investigation on the metal exchange reaction in cluster com…     

两个新颖的铜-二氮杂菲和钼(磷,硒)杂多酸组成的有机-无机杂合化合物:合成和晶体结构

水热法合成了两个新颖的有机-无机杂合化合物{[Cu(o-phen)(H₂O)]₃[Mo₅P₂O₂₃]}•4.5H₂O (1) 和{[Cu(o-phen)- (H₂O)]₂[Mo₅Se₂O₂₁]} (2) (o-phen＝1,10-phenanthroline). 通过红外光谱和单晶X射线衍射分析确定了它们的结构. 结构分析表明两个分子结构中的相邻[Mo₅P₂O₂₃]^6－或[Mo₅Se₂O₂₁]^4－阴离子均由两个桥式的[Cu(o-phen)(H₂O)]单元连接成分别为风车状和双侧桥联状一维聚合链, 化合物1的双金属链又通过若干链间氢键形成层状堆积结构. 讨论了钼杂多酸阴离子和第二种金属-配体亚单元阳离子之间的相互匹配关系.     

多种谱学方法研究蓝色签字笔墨水

运用傅里叶变换红外光谱、显微激光拉曼光谱以及紫外-可见光谱仪等多种光谱学手段测定了纸张上蓝色签字笔墨水的光谱,并根据吸收峰的差异对收集到的28种不同品牌、系列的蓝色签字笔进行了分类。同时还结合热重-质谱联用研究了人为老化过程中纸张上签字笔墨水成分的变化。讨论了上述谱学方法在分析鉴别纸张上蓝色签字笔墨水种类及成分的优劣,以及在研究相对书写时间和绝对书写时间中的潜在应用。     

钼簇合物的簇解反应和两个多钼酸盐化合物的晶体结构

含μ-Cl桥的三核钼簇阴离子[Mo~3(μ~3-O)(μ-Cl)~3(μ-OAc)~3Cl~3]^-在Fe^3^+作用下发生簇解反应, 形成钼同多酸盐[FeCl(DMF)~5][Mo~6O~1~9]。在合成[Mo~3(μ~3-S)(μ-S~2)~3(dtp)~3Cl]簇合物的反应中如果有CuI存在, 则形成钼磷杂多酸盐(Et~4N)~4[PMo~1~2O~4~0](DMF)~2。本文报道这两个多钼酸盐化合物的晶体结构, 并讨论有关的簇解反应。     

系列含二核钼(钨)簇阴离子化合物的合成、结构特征和簇间相互作用

报道了系列共9个以[(M₂O_nS_4-n)(i-mnt)₂]^2- (M=Mo, W; i-mnt=S₂CC(CN)₂^2-; n=0, 1, 2)二核簇为阴离子,以某些有机基团如R₄N (R=烷基),质子化的4,4'-bpy或碱金属Cs, K,二价金属Ni, Mn配合物为阳离子的新化合物的合成,晶体结构,谱学表征和成键特征.这些化合物通过S...S, S...Cl, Cl...Cl超分子相互作用及离子间氢键形成双聚、链状、层状、三维网络及包合物堆积结构.采用扩展的Hückel近似下的紧束缚能带方法计算了部分化合物的能带结构,表明正是这些簇间或离子间的相互作用提供了簇间电荷转移的可能.部分晶体粉末样品的变温电导率测试证实了它们具有半导体导电性能.