配合物(BenzMeIm)2[PtCl4]的合成与表征

通过离子液体氯化1-苄基-3-甲基咪唑（BenzMeIm-Cl）与PtCl₂的反应,合成了配合物（BenzMeIm）₂[PtCl₄],并用元素分析、红外光谱、紫外-可见光谱、¹H NMR、¹³C NMR和单晶X射线衍射对其进行了表征。单晶X射线分析表明,配合物结构属于P2₁/c空间群,晶胞参数和结构解析参数为：a=0.981 80（5）nm,b=0.861 47（3）nm,c=0.144 332（7）nm,β=92.480（2）°,V=121.96（1）nm³,R₁=0.014 4,wR₂=0.038 8。     

氨荒酸配合物（[M（MeBnNCS2）3], M=Sb（Ⅲ）, Bi（Ⅲ））的合成、晶体结构及抑菌活性

合成了2种新的N-甲基-N-苄基二硫代氨基甲酸锑[Sb（MeBnNCS₂）₃]（1）和铋[Bi（MeBnNCS₂）₃]（2）配合物。通过元素分析、红外光谱、¹H NMR、热重对其进行表征,并用X-射线单晶衍射测定了晶体结构。配合物1和2均属于单斜晶系,P2₁/c空间群。配合物1的晶胞参数为：a=0.9551（7）nm,b=1.3575（10）nm,c=2.4681（17）nm,β=104.01（2）°,Z=4,V=3.105（4）nm₃,D_c=1.520g·cm^-3,F（000）=1440,μ=1.314mm^-1,最终偏离因子R₁=0.0339,wR₂=0.0832,S=1.010;配合物2的晶胞参数为：a=1.3390（6）nm,b=0.9975（5）nm,c=2.4261（5）nm,β=98.433（7）°,Z=4,V=3.205（2）nm³,D_c=1.653g·cm^-3,F（000）=1568,μ=5.912mm^-1,最终偏离因子R₁=0.0398,wR₂=0.0864,S=1.089。在这2个配合物中,中心金属离子M（Ⅲ）与来自3个配体中的6个硫原子配位,配合物1形成6配位的畸变的八面体构型;配合物2则形成6配位的畸变的五角锥构型。在配合物2中,分子之间又通过Bi…S弱相互作用构成二聚体结构。利用琼脂扩散法测试了配合物的抑菌活性,结果表明配合物1对4种受试菌株具有较强的抑菌活性。     

两个具stp三维拓扑构型的稀土配位聚合物{[Ln2（pda）3（H2O）2]2H2O}n（Ln=Nd/La）

本文利用水热合成方法,将稀土氧化物与邻苯二乙酸（H₂pda）反应得到了2个新颖的稀土配位聚合物{[Ln₂（pda）₃（H₂O）₂]·2H₂O}_n（Ln=Nd（1）,La（2））。测定了它们的晶体结构,并进行了X-射线单晶衍射、红外光谱、荧光光谱和热重分析等性质的表征。晶体结构测定表明这2个化合物为异质同晶化合物。属单斜晶系,C2/c空间群。晶体学参数分别为配合物1：a=2.62906（18）nm,b=1.61172（11）nm,c=0.78327（5）nm,β=93.173（5）°,V=3.3139（4）nm³,Z=4,F（000）=1840,μ=3.173mm^-1,D_c=1.878g·cm^-3,R₁=0.0226,wR₂=0.0609;配合物2：a=2.6271（14）nm,b=1.6149（8）nm,c=0.7966（4）nm,β=92.850（9）,V=3.375（3）nm³,Z=4,F（000）=1816,μ=2.570mm^-1,D_c=1.823g·cm^-3,R₁=0.0466,wR₂=0.1416。化合物中邻苯二乙酸配体连接相邻的稀土金属离子,形成复杂的具有stp拓朴构型的三维网络结构。     

以吡啶为配体的镍配合物[Ni(py)3(H2O)3] (1, 5-nds)的合成、晶体结构及性质研究

采用缓慢蒸发法, 在水溶剂中合成了含氮配体单核Ni(Ⅱ)配合物[Ni(py)₃(H₂O)₃] (1, 5-nds)(py=pyridine, 1, 5-nds=1, 5-萘二磺酸根离子)。采用X射线单晶衍射、红外光谱、热分析和紫外可见光谱等方法对配合物进行了表征。X射线单晶衍射表征结果表 明, 该配合物晶体属于单斜晶系, 空间群为C2/c。晶体学参数:a=1.569 46(17) nm, b=1.219 95(12) nm, c=1.454 71(16) nm, β=14.547 1(16)°, V=2.765 1(5) nm³, Z=4。考察了该配合物的磁性和荧光性质。     

不对称大环双核铜(Ⅱ)配合物[Cu2(C23H26Cl2N4O2)](ClO4)2的合成、晶体结构及磁性

大环双核铜(Ⅱ)配合物由N,N′-二甲基-N,N′-二(3-甲酰基-5-氯水杨醛)乙二胺和1,3-丙二胺,与铜(Ⅱ)反应形成的,经过X-射线单晶衍射结果表明：a=0.871 05(16) nm,b=0.957 78(18) nm,c=1.810 4(3) nm,β=100.761(18)°,V=1.483 8(5) nm³,Z=2,D_c=1.762 Mg·m^-3,μ=1.85 mm^-1,F(000)=796,and final R₁=0.061,wR₂=0.126。晶体结构表明：两个铜离子位于双核大环中间,与大环的胺、亚胺以及酚羟基的氧进行配位。磁性结果表明配合物为反铁磁性。     

N-O螯合配体协同膦配体的银(Ⅰ)混配配合物的设计、结构和生物活性

合成了一种Ag （Ⅰ）配合物[Ag （Qina）（Tpp）₂]·1.5H₂O （Qina=2-喹啉羧酸根,Tpp=三苯基膦）。运用单晶X射线衍射、IR、NMR和粉末X射线衍射对配合物的结构进行了表征。配合物属于单斜晶系,C2/c空间群,晶胞参数：a=3.195 90（13） nm,b=1.210 96（4） nm,c=2.319 74（7） nm,β=102.166（4）°,V=8.776 0（5） nm³,Z=8。通过Hirshfeld表面分析,推导出配合物的超分子结构和分子间弱作用力。同时,通过DNA结合活性测试、抗菌活性和癌细胞体外毒活性测试,评价了配合物的生物活性。     

原位脱羧制备的配合物(HP2W18O62)(C6H6NO2)5·2H2O: 结构、光谱及电化学性能

采用水热法将钨酸钠和浓磷酸与有机配体吡啶-2, 6-二羧酸通过原位脱羧制得配合物(HP₂W₁₈O₆₂)(C₆H₆NO₂)₅·2H₂O (1), 并用红外光谱、紫外光谱、循环伏安(CV)和X射线单晶衍射等方法进行了表征。分子中的2-吡啶甲酸来源于吡啶-2, 6-二羧酸 的脱羧反应。化合物1属于单斜晶系, 空间群P2₁/n, 晶胞参数分别为:a=1.553 3(2) nm, b=2.006 3(3) nm, c=2.759 9(4) nm, β=103.981(2)°, Z=4, F(000)=8 816。分子间氢键和2-吡啶甲酸与杂多化合物间的弱相互作用使该化合物具有3D超分子结构。CV结果表明, 化合物1有四步氧化还原反应。     

基于二羟基萘二磺酸根的配合物Na3[Na5(dhns)2]·(phen)4·2H2O的合成、晶体结构和热稳定性

2,7-二羟基萘-3, 6-二磺酸二钠盐(Na₂H₂dhns)与邻菲罗啉在乙醇/水溶液中自组装得到一新的配合物Na₃[Na₅(dhns)₂]·(phen)₄ ·2H₂O (1),并用CHN元素分析、IR、TGA和X-射线单晶衍射分析进行了表征。晶体属正交晶系, Pna2₁空间群, a=2.829 85(12) nm,b=1.038 99(14) nm, c=2.259 23(13) nm, V=6.642 6(10) nm³, Z=4, D_c=1.573 g·cm^-3, R₁=0.050 6, wR₂=0.124 0, S=1.05。     

三烃基锡配合物（PhCMe2CH2）3Sn[O2C（CHRPh）][R：OH（1）, H（2）]的合成、结构、热稳定性、量子化学及毒性研究

甲醇中氧化双[三（2-甲基-2-苯基）丙基锡]分别与DL-扁桃酸、苯乙酸反应,合成了2个三烃基锡配合物（PhCMe₂CH₂）₃Sn[O₂CCH（OH）Ph]（1）和（PhCMe₂CH₂）₃Sn（O₂CCH₂Ph）（2）。经IR、¹H和¹³CNMR、元素分析和X-射线单晶衍射表征结构。1和2均属三斜晶系,空间群P1。配合物1晶体学参数：a=0.9711（2）nm,b=1.1766（3）nm,c=1.7008（4）nm,α=96.840（12）°,β=103.235（12）°,γ=110.725（11）°,Z=2,V=1.7260（7）nm³,D_c=1.288g·cm^-3,μ（MoKα）=0.773mm^-1,F（000）=696,R₁=0.0325,wR₂=0.0873。配合物2晶体学参数：a=0.97285（9）nm,b=1.16140（11）nm,c=1.68931（16）nm,α=96.830（5）°,β=101.935（5）°,γ=110.770（4）°,Z=2,V=1.7071（3）nm³,D_c=1.271g·cm^-3,μ（MoKα）=0.778mm^-1,F（000）=680,R₁=0.0248,wR₂=0.0673。1和2的中心锡原子均为畸变四面体构型。通过分子间C-H…O或C-H…π作用,1和2分别形成一维带状或链状结构。热重分析结果表明,1和2具有良好的稳定性。毒性测试的初步结果表明,配合物1、2具有较好的环境相容性,对石螺急性毒性较小。     

二维网状Pb(Ⅱ)配合物的合成、晶体结构及荧光性质

利用4-吡啶-3-苯甲酸(4,3-pybz)和醋酸铅在水热条件下合成了一种新型金属配合物[Pb(4,3-pybz)2]_n(1),并对其进行了元素分析、红外光谱、热重表征、X 射线单晶衍射测定。该配合物为正交晶系,Pccn空间群,a=1.070 74(7) nm,b=2.138 03(13) nm, c=0.865 65(5) nm,V=1.981 7(2) nm³,Z=4,D_c=2.023 Mg·m^-3,F(000)=1 152,GOF=1.050,μ=8.549 mm^-1,残差因子R₁=0.013 9,wR₂=0.032 4。该配合物展现了一个具有(4,4)拓扑二维波浪状网络结构,进而通过弱的π-π相互作用拓展为三维超分子体系。此外,室温下配合物1展现了弱的荧光性质。     

Ba3 (VO4)2-K2 Ba(MoO4)2 and Pb3 (VO4)2-K2 Pb(MoO4)2 systems

Phase equilibria in the Ba₃(VO₄)₂-K₂Ba(MoO₄)₂ and Pb3(VO₄)₂-K₂Pb(MoO₄)₂ systems have been investigated. In the first system, a continuous series of substitutional solid solutions with the palmierite structure is formed, and in the second one, the polymorphic transition in lead orthovanadate at 100°C restricts the extent of the palmierite-type solid solution to 10–100 mol % K₂Pb(MoO₄)₂. Original Russian Text ? V.D. Zhuravlev, Yu.A. Velikodnyi, A.S. Vinogradova-Zhabrova, A.P. Tyutyunnik, V.G. Zubkov, 2008, published in Zhurnal Neorganicheskoi Khimii, 2008, Vol. 53, No. 10, pp. 1746–1748.     

Li1.2Mn0.54Ni0.13Co0.13O2正极材料的Ga2O3包覆改性及电化学性能

首先采用共沉淀方法制备富锂锰基正极材料 Li_1.2Mn_0.54Ni_0.13Co_0.13O₂原始样品(P-LRMO), 然后通过简单的湿化学法以及低温煅烧方法对其进行不同含量 Ga₂O₃原位包覆。透射电子显微镜(TEM)以及 X射线光电子能谱(XPS)结果表明在 P-LRMO表面成功合成了 Ga₂O₃包覆层。电化学测试结果表明:含有 3 %Ga₂O₃的改性材料 G3-LRMO具有最优的电化学性能, 其在 0.1C倍率(电流密度为 25 mA·g^-1)下首圈充放电比容量可以达到 270.1 mAh·g^-1, 在 5C倍率下容量仍能保持 127.4 mAh·g^-1, 优于未改性材料的 90.7 mAh·g^-1, 表现出优异的倍率性能。G3-LRMO在 1C倍率下循环 200圈后仍有 190.7 mAh·g^-1的容量, 容量保持率由未改性前的 72.9 %提升至 85.6 %, 证明 Ga₂O₃包覆改性能有效提升富锂锰基材料的循环稳定性。并且, G3-LRMO在 1C倍率下循环 100圈后, 电荷转移阻抗(R_ct)为 107.7 Ω, 远低于未改性材料的 251.5 Ω, 表明 Ga₂O₃包覆层能提高材料的电子传输速率。     

Investigation of phase equilibria in the systems K2SO4Sc2(SO4)3, Rb2SO4Sc2(SO4)3 and Cs2SO4Sc2(SO4)3

Phase diagrams of the systems K₂SO₄Sc₂(SO₄)₃, Rb₂SO ₄Sc₂(SO₄)₃ and Cs₂SO₄ Sc₂(SO₄)₃ have been investigated by X-ray diffraction phase analysis and differential thermal analysis techniques. A salient feature of all the systems is the formation of M₃Sc(SO₄)₃, which melt incongruently, and MSc(SO₄)₂, which on heating decompose in the solid state.     

Synthesis and molecular structures of heptafluoroisopropylated fullerenes: C60(i-C3F7)8, C60(i-C3F7)6, and C60(CF3)2(i-C3F7)2

One isomer of C₆₀(i-C₃F₇)₈, three isomers of C₆₀(i-C₃F₇)₆, and the first mixed perfluoroalkylated fullerene, C₆₀(CF₃)₂(i-C₃F₇)₂, have been isolated by HPLC from a mixture prepared by reaction of C₆₀ with heptafluoroisopropyl iodide in a glass ampoule at 260-290 °C. The molecular structures of the four new compounds have been determined by means of X-ray single crystal diffraction partially also by use of synchrotron radiation. Theoretical calculations at the DFT level of theory have been employed to rationalize the energetics of isomers and of C₆₀-R_f binding.     

Phase transitions in Ca3(BN2)2 and Sr3(BN2)2

α-Ca₃(BN₂)₂ crystallizes in the cubic system (space group: ) with one type of calcium ions disordered over of equivalent (8c) positions. An ordered low-temperature phase (β-Ca₃(BN₂)₂) was prepared and found to crystallize in the orthorhombic system (space group: Cmca) with lattice parameters: , , and . Structure refinements on the basis of X-ray powder data have revealed that orthorhombic β-Ca₃(BN₂)₂ corresponds to an ordered super-structure of cubic α-Ca₃(BN₂)₂. The space group Cmca assigned for β-Ca₃(BN₂)₂ is derived from by a group-subgroup relationship.DSC measurements and temperature-dependent in situ X-ray powder diffraction studies showed reversible phase transitions between β- and α-Ca₃(BN₂)₂ with transition temperatures between 215 and 240 °C.The structure Sr₃(BN₂)₂ was reported isotypic with α-Ca₃(BN₂)₂ () with one type of strontium ions being disordered over of equivalent (2c) positions. In addition, a primitive () structure has been reported for Sr₃(BN₂)₂. Phase stability studies on Sr₃(BN₂)₂ revealed a phase transition between a primitive and a body-centred lattice around 820 °C. The experiments showed that both previously published structures are correct and can be assigned as α-Sr₃(BN₂)₂ (, high-temperature phase), and β-Sr₃(BN₂)₂ (, low-temperature phase).A comparison of Ca₃(BN₂)₂ and Sr₃(BN₂)₂ phases reveals that the different types of cation disordering present in both of the cubic α-phases () have a directing influence on the formation of two distinct (orthorhombic and cubic) low-temperature phases.     

Syntheses, structures, and properties of Ag4(Mo2O5)(SeO4)2(SeO3) and Ag2(MoO3)3SeO3

Ag₄(Mo₂O₅)(SeO₄)₂(SeO₃) has been synthesized by reacting AgNO₃, MoO₃, and selenic acid under mild hydrothermal conditions. The structure of this compound consists of cis-MoO₂²⁺ molybdenyl units that are bridged to neighboring molybdenyl moieties by selenate anions and by a bridging oxo anion. These dimeric units are joined by selenite anions to yield zigzag one-dimensional chains that extended down the c-axis. Individual chains are polar with the C₂ distortion of the Mo(VI) octahedra aligning on one side of each chain. However, the overall structure is centrosymmetric because neighboring chains have opposite alignment of the C₂ distortion. Upon heating Ag₄(Mo₂O₅)(SeO₄)₂(SeO₃) looses SeO₂ in two distinct steps to yield Ag₂MoO₄. Crystallographic data: (193 K; MoKα, λ=0.71073 Å): orthorhombic, space group Pbcm, a=5.6557(3), b=15.8904(7), c=15.7938(7) Å, V=1419.41(12), Z=4, R(F)=2.72% for 121 parameters with 1829 reflections with I>2σ(I). Ag₂(MoO₃)₃SeO₃ was synthesized by reacting AgNO₃ with MoO₃, SeO₂, and HF under hydrothermal conditions. The structure of Ag₂(MoO₃)₃SeO₃ consists of three crystallographically unique Mo(VI) centers that are in 2+2+2 coordination environments with two long, two intermediate, and two short bonds. These MoO₆ units are connected to form a molybdenyl ribbon that extends along the c-axis. These ribbons are further connected together through tridentate selenite anions to form two-dimensional layers in the [bc] plane. Crystallographic data: (193 K; MoKα, λ=0.71073 Å): monoclinic, space group P2₁/n, a=7.7034(5), b=11.1485(8), c=12.7500(9) Å, β=105.018(1) V=1002.7(2), Z=4, R(F)=3.45% for 164 parameters with 2454 reflections with I>2σ(I). Ag₂(MoO₃)₃SeO₃ decomposes to Ag₂Mo₃O₁₀ on heating above 550 °C.     

Luminescence properties of efficient X-ray phosphors of YBa3B9O18, LuBa3(BO3)3, α-YBa3(BO3)3 and LuBO3

The samples of YBa₃B₉O₁₈, LuBa₃(BO₃)₃, α-YBa₃(BO₃)₃ and LuBO₃ powders have been synthesized by the solid-state reaction methods at high temperature and their X-ray excited luminescent properties were investigated. All the studied materials show a broad emission band in the wavelength range of 300-550 nm with the peak centers at about 385 nm for YBa₃B₉O₁₈ and LuBa₃(BO₃)₃, 415 nm for α-YBa₃(BO₃)₃ and 360 nm for LuBO₃ powders, respectively. Even though those compounds have the different atomic structures, they have the common structural feature of each yttrium or lutetium ion bonded to six separate BO₃ groups, i.e., octahedral RE(BO₃)₆ (RE=Lu or Y) moiety. This octahedral RE(BO₃)₆(RE=Lu or Y) moiety seems to be an important structural element for efficient X-ray excited luminescence of those compounds, as are the edge-sharing octahedral TaO₆ chains for tantalate emission.     

Vapour-liquid equilibrium data for the systems C2H6 + N2, C2H4 + N2, C3H8 + N2, and C3H6 + N2

High pressure vapour-liquid equilibrium data for the C₂H₆ + N₂, C₂H₄ + N₂, C₃H₈ + N₂, and C₃H₆ + N₂ systems are presented. The data are obtained isothermally in the range from 200 K to 290 K. For each point of data, temperature, pressure and liquid and vapour phase mole fractions are measured.Values for the vapour phase mole fractions are calculated from the obtained pressure, temperature and liquid phase mole fractions. The calculated values are compared with the experimental results, and it is found that the average mean deviation between calculated and experimental mole fractions is less than 0.009 for the systems considered in this work.     

A new three-dimensional cobalt phosphate: Co5(OH2)4(HPO4)2(PO4)2

A three-dimensional (3D) cobalt phosphate: Co₅(OH₂)₄(HPO₄)₂(PO₄)₂ (1), has been synthesized by hydrothermal reaction and characterized by single-crystal X-ray diffraction, thermogravimetric analysis, and magnetic techniques. The title compound is a template free cobalt phosphate. Compound 1 exhibits a complex net architecture based on edge- and corner-sharing of CoO₆ and PO₄ polyhedra. The magnetic susceptibility measurements indicated that the title compound obeys Curie-Weiss behavior down to a temperature of 17 K at which an antiferromagnetic phase transition occurs.     

Synthesis and crystal structure of gallosilicate- and aluminogermanate tetrahydroborate sodalites Na8[GaSiO4]6(BH4)2 and Na8[AlGeO4]6(BH4)2

Tetrahydroborate enclathrated sodalites with gallosilicate and aluminogermanate host framework were synthesized under mild hydrothermal conditions and characterized by X-ray powder diffraction and IR spectroscopy. Crystal structures were refined in the space group P-43n from X-ray powder data using the Rietveld method. Na₈[GaSiO₄]₆(BH₄)₂: a=895.90(1) pm, V=0.71909(3)×10⁻⁶ nm³, R_P=0.074, R_B=0.022, Na₈[AlGeO₄]₆(BH₄)₂: a=905.89(2) pm, V=0.74340(6)×10⁻⁶ nm³, R_P=0.082, R_B=0.026. The tetrahedral framework T-atoms are completely ordered in each case and the boron atoms are located at the centre of the sodalite cages. The hydrogen atoms of the enclathrated anions were refined on x, x, x positions, restraining them to boron-hydrogen distances of 116.8 pm as found in NaBD₄.The IR-absorption spectra of the novel phases show the typical bands of the tetrahedral group as found in the spectrum of pure sodium boron hydride.The new sodalites are discussed as interesting -containing model compounds which could release pure hydrogen.