对—乙酰苯基二茂铁的晶体结构

单取代二茂铁化合物,尤其是单取代芳基二茂铁化合物,当芳基为带有各种不同取代基苯时,中心铁原子的氧化还原电势会产生相应的变化,茂环上屹化学位移也明显地与Hammett常数相关。在对-乙酰苯基二茂铁的电化学研究中已经证明,它的氧化势     

稀土—β—苯基丙烯酸配合物的合成,表征与晶体结构

合成了β－苯基丙烯酸与稀土的１４种配合物，经分析测定其组成的ＲＥＬ３（ＲＥ＝Ｙ，Ｌａ～Ｙｂ，ＨＬ＝β－Ｃ６Ｈ５ＣＨ＝ＣＨＣＯＯＨ）。用ＩＲ，ＮＭＲ和单晶Ｘ射线衍射等技术对此类配合物的性质及晶体结构进行了研究，结果表明ＥｒＬ３为单斜晶系，Ｐ２１空间群，在每个配位单元中，Ｅｒ与来自６个羧酸根的７个氧原子配位，形成畸变的五角双锥配位多面体。     

甲基三氧化铼(Ⅶ)席夫碱配合物的合成与晶体结构

A novel methyltrioxorhenium(Ⅶ) (MTO) complex was synthesized by the reaction of MTO with Schiff-base ligand obtained by the condensation of 2-pyridinecarboxaldehyde with 4-bromoaniline in methanol. The complex was characterized by NMR, IR, MS, elemental analysis and X-ray diffraction single crystal structure analysis. The results showed that the crystal belongs to monoclinic, space group P2₁/n with a=0.965 70(19) nm, b=1.410 6(3) nm, c=1.080 4(2) nm, β=109.20(3)°, V=1.390 0(5) nm3, M_r=510.36, Z=4, D_c=2.439 g·cm^-3, F(000)=952 and final R₁=0.034 4, wR₂=0.076 1. The crystal structure indicates that the Re(Ⅶ) atom is coordinated with both nitrogen atoms from the Schiff-base. CCDC: 740159.     

氯化钕与二甲亚砜配合物的晶体结构

[Nd(DMSO)_5(H_2O)_3]Cl_3·H_2O的单晶用ENRAF-NONIUS CAD 4型四圆衍射仪收集衍射数据进行结构分析,最终偏离因子R=0.036。晶体属三斜晶系空间群P_1,晶胞参数a=9.800(1),b=10.531(1),c=14.757(2);α=93.07(1),β=100.2l(1),γ=99.71(1)°;Z=2。结构分析证实:晶胞中有二个[Nd(DMSO)_5(H_2O)_3]Cl_3·H_2O分子。Nd与五个DMSO及三个H_2O中的氧形成八配位的畸变三角十二面体结构。Cl~-与络阳离子通过离子键相互作用。[Tb(DMSO)_5(H_2O)_3)Cl_3·H_2O的晶胞参数与之相近,有类似的结构。     

三(2-甲基-2-苯基丙基)锡(Ⅳ)苯氧乙酸酯的合成和晶体结构

合成、表征了三(2-甲基-2-苯基丙基)锡苯氧乙酸酯，测定了其晶体结构。晶体属于三斜晶系，P1空间群。晶胞参数：α=1.0577(4) nm, b=2.0106(9) nm, c=1.0085(3)nm, α=95.25(3)°，β=119.07(3)°, γ=75.77(3)°, V=1.8160(1)nm³, Dc=1.22 g/cm^{3相似文献}   

氯化稀土与苯基羧甲基亚砜配合物的合成、表征及Eu(Ⅲ)配合物的发光

稀土配合物;荧光;氯化稀土与苯基羧甲基亚砜配合物的合成、表征及Eu(Ⅲ)配合物的发光     

铕(Ⅲ)的双亚砜混配配合物的合成、表征及其荧光光谱

本文合成了１，３－双（苯基亚砜）丙烷，１，４双（苯基亚砜）丁烷与１，１０－菲罗啉，２，２’－联吡啶的铕（Ⅲ）配合物，并通过元素分析、红外光谱、紫外光谱、摩尔电导和热分析对该系列配合物进行了表征，并测量和分析了有关五个配合物的荧光光谱．     

轻稀土高氯酸苯基苯甲酰甲基亚砜配合物的合成、表征及铕的光致发光

轻稀土高氯酸配合物;合成与表征;轻稀土高氯酸苯基苯甲酰甲基亚砜配合物的合成、表征及铕的光致发光     

高氯酸钬（Ⅲ）和双（苯基亚砜）丙烷、双（苯基亚砜）丁烷配合物的光谱性质

测量了高氯酸钦（Ⅲ）和双（苯基亚砜）丙烷、双（苯基亚砜）丁烷配合物的溶液（甲醇－氯仿，二甲基甲酰胺）的电子光谱，计算了ｆ－ｆ跃迁的振子强度和强度参数，并讨论了“超灵敏”跃迁的强度和强度多数与配体性质的关系和溶剂的影响。     

对甲苯基烷基亚砜与钯(Ⅱ)配合物的合成及热分析研究

对甲苯基烷基亚砜(RSOPhCH_3)对钯的萃取研究及其与钯(Ⅱ)的固体配合物的合成迄今尚未见报道。本文首次制备了五种不同取代烷基的系列配体的钯(Ⅱ)配合物(R=n-C_4H_9,C_6H_(13),C_8H_(17),C_(10)H_(21)和C_(12)H_(25)),采用元素分析、红外光谱等方法鉴定其组成。由于研究该系列配合物的性质,如热稳定性等能有助于对它们萃取机理的进一步探索,因此,本文应用热重分析法(TG-DTG)研究了配合物的热分解过程,分别应用Freeman-Carroll,Coats-Redfern和Kissinger方程获得了它们的热分解活化能,并讨论了配合物的热分解行为与配合物配体中取代烷基之间的关系。     

某些稀土硝酸盐与N,N-二亚水杨基乙二胺-二甲基亚砜三元配合物的合成和晶体结构

合成了Tb(Ⅲ)、Y(Ⅲ)、Nd(Ⅲ)硝酸盐与N,N-二亚水杨基乙二胺、二甲基亚观的配合物[RE(C₆H₄OHCHNC₂H₄NCHC₆H₄OH)(NO₃)₃(CH₃SOCH₃)］.Tb(Ⅲ)配合物晶体为单斜晶系,空间群P2₁/n,a=0.9628(3)nm,b=1.6439(4)nm,C=1.6256(2)nm,β=102.78(2)°,V=2.509(2)nm₃,D_x=1.830g/cm³,Z=4,μ=2.996mm^-1,F(000)=1368,R=0.043,R_w=0.046.Tb(Ⅲ)的配位数是9,配位几何为单帽四方反核柱.所有的配位原子都是氧原子.两个中心离子被双Schiff碱桥联,形成一维无限长链.     

取代四甲基环戊二烯基钼羰基化合物的合成及晶体结构

<正>0引言自20世纪50年代二茂铁[1-2]发现以来,环戊二烯基金属有机化合物成为研究最多的一类金属有机化合物,特别是20世纪80年代初茂金属催化剂的发现,使环戊二烯基金属有机化合物     

Synthesis and Crystal Structure of the Novel Chiral o—Hydroxyphenyloxazoline Metal Complexes

1 INTRODUCTION Optically active oxazolines have been extensi- vely used as valuable chiral ligands for transition metals in asymmetric catalysis[1]. The design and syntheses of new chiral oxazoline ligands have inspired many scientists to work with great efforts during the recent years. Our interest has been focus- ed on the studies of enantioselective transition- metal catalysis of heterocyclic ligands. In the pre- sent work, we choose o-hydroxyphenyloxazoline ligand for it has a rigi…     

Synthesis and X-Ray Crystal Structure of New Oxathiacrown Ethers Containing Sulfoxide Group and Their Metal-Binding Properties: Highly Selective Receptors for Ag+ and Cu2+

Three new oxathiacrown ethers 1, 2 and 3 containing a sulfoxide group were synthesized in a simple way. Conductometric titration studies in pure acetonitrile were employed to invistigate their binding affinities towards Ag ⁺, Cu ²⁺, Pb ²⁺, Cd ²⁺, Zn ²⁺, Co ²⁺, Ni ²⁺, Cr ³⁺and Hg ²⁺. They were found to be selective for Ag ⁺ and Cu ²⁺ over the other metals investigated. Ligand 1 has the highest selectivity towards Ag ⁺. The structure of compound 3 was confirmed by X-ray crystallography.Supplementary Data relevant to this article have been deposited at the Cambridge Crystallographic Data Centre under the deposition number 232076.     

Limiting Electroconductivity and Structure of Molten Chlorides of Alkaline-Earth Metals

It is established experimentally that the electroconductivity of individual molten chlorides of calcium, strontium, and barium increases with the electric field strength and reaches limiting values, which are dependent on the salt nature and the temperature. The limiting electroconductivity of molten calcium and strontium chlorides satisfactorily obeys the Nernst–Einstein relationship. The relaxation kinetics of excess conductivity induced by high-voltage pulsed discharges is studied. The relaxation time is equal to about 10⁴ s.     

Synthesis and Crystal Structure of NaeTiO3

The crystal structure of a sodium titanium oxide Na2TiO3 obtained by high temperature solid state reaction method was determined from single-crystal X-ray diffraction study. The compound crystallizes in the monoclinic system, space group C2/c, Mr = 141.88, a = 9.885（1）, b = 6.4133（8）, c = 5.5048（7） A, β = 115.50（3）°, V = 314.99（7） A^3, Z = 4, Dc = 2.992 g/cm^3, 2 = 0.71073A,μ = 27.80 cm^-1, F（000） = 272, T= 295 K, R = 0.0189 and wR = 0.0512 for 30 variables and 370 contributing unique reflections. The three-dimensional structure in Na2TiO3 is constructed by the TiO（1）4O（2） and NAO（1）3O（2）2 groups. The titanium atoms are grouped in the form of trigonal bipyramid and arranged along the c axis by sharing the edges. The structure is compared with other structures of related A2BO3 compounds.     

铀酰配合物单晶的合成与结构

铀作为重要的核材料,是核燃料循环中最受关注的元素之一。在铀的开采、纯化以及应用等过程中,不可避免地会产生铀的释放。环境中的无机酸根及土壤有机质的羧酸根可与铀形成配合物,从而可能影响其迁移与吸附行为。通过研究铀酰配合物晶体的结构可以为吸附或迁移模型以及从分子水平探讨吸附机理提供结构参数。本文综述了国际上铀酰固体化学领域的研究进展,阐述了铀酰配合物的结构特点,铀酰无机含氧酸、过氧及草酸配合物的合成与晶体结构。在对国内外主要开展铀酰配合物晶体研究的课题组之研究工作进行归纳和分析的基础上,提出铀酰配合物研究的思路和建议,以期为国内锕系元素固体化学研究工作的开展提供参考。     

Synthesis and Crystal Structure of Na2TiO3

The crystal structure of a sodium titanium oxide Na2TiO3 obtained by high temperature solid state reaction method was determined from single-crystal X-ray diffraction study. The compound crystallizes in the monoclinic system, space group C2/c, Mr = 141.88, a = 9.885(1), b = 6.4133(8), c = 5.5048(7) , β = 115.50(3)o, V = 314.99(7) 3, Z = 4, Dc = 2.992 g/cm3, λ = 0.71073 , μ = 27.80 cm–1, F(000) = 272, T = 295 K, R = 0.0189 and wR = 0.0512 for 30 variables and 370 contributing unique reflections. The three-dimensional structure in Na2TiO3 is constructed by the TiO(1)4O(2) and NaO(1)3O(2)2 groups. The titanium atoms are grouped in the form of trigonal bipyramid and arranged along the c axis by sharing the edges. The structure is compared with other structures of related A2BO3 compounds.     

含双水杨醛Schiff碱配体的双核配合物的合成及晶体结构

合成了4个含双水杨醛Schiff碱配体的双核过渡金属配合物,并通过元素分析、红外光谱、紫外光谱,热重分析以及X-射线单晶衍射等手段对所得配合物进行了表征。结果表明,配合物1、3和4都属于三斜晶系,空间群为P1,而配合物2属于单斜晶系,空间群为C2/c。在配合物1中,2个Cu髤离子具有不同的配位构型,其中一个Cu髤形成了五配位的四角锥构型,而另一个Cu髤形成了平面正方形构型。配合物4中,通过酚氧原子的桥联作用,双核单元相互连接形成了一维链状结构。     

一种新颖酰基硫脲金属簇合物的合成与晶体结构

报道了一种新型酰基硫脲金属簇合物[Cu₆(HL)₆] (HL＝N-乙氧羰基-N'-4-氟苯基硫脲)的合成和晶体结构. 对化合物用元素分析、红外光谱、核磁共振谱、差热-热重分析确定了配合物的组成, 并经X射线单晶衍射法确定了其单晶结构. 晶体结构表明, 该化合物属于三斜晶系, 空间群, a＝1.2508(11) nm, b＝1.3011(11) nm, c＝1.4686(12) nm, a＝102.401(14)°, β＝97.859(2)°, γ＝114.700(13)°, V＝2.051(3) nm³, Z＝1, D_c＝1.687 Mg/m³. 标题化合物是由六个铜离子和六个硫脲配体组成的笼状金属簇合物, 每一个硫脲配体上与乙氧酰基相连的氮原子与铜进行配位, 并且配体上硫羰基上的硫原子与铜也发生配位作用, 使它们互相连接形成畸变的多面体结构.