Synthesis and Crystal Structure of （Z）-1- （3-Fluorobenzyl）-5-（（3-fluorobenzylimino）（2-hydroxy-4-methoxyphenyl）methyl）pyridin-2（1H）-one

The title compound （Z）-1-（3-fluorobenzyl）-5-（（3-fluorobenzylimino）（2-hydroxy-4- methoxyphenyl）methyl）pyridin-2（1H）-one （C27H22F2N2O3,Mr = 460.47） was synthesized and crystallized. The crystal belongs to the triclinic system,space group P1 with a = 9.951（6）,b = 10.059（6）,c = 12.927（7）A,α = 109.828（7）,β = 102.304（7）,γ = 104.898（7）°,Z = 2,V = 1110.2（11）A^3,Dc =1.377 Mg/m^3,μ（MoKα） = 0.102 mm^-1,F（000） = 480,the final R = 0.0449 and Rw = 0.1250 for 4595 observed reflections （I 〉 2σ（I））. X-ray analysis reveals that both m-fluorobenzyl groups are diorientationally disordered because of the rotation of C–C single bond which was represented as F（1）,F（2） and F（1＇）,F（2＇）. The diorientational disorder was refined and gave the occupancies of 0.665（4） and 0.335（4） for F（1） and F（1＇）,0.631（3） and 0.369（3） for F（2） and F（2＇）. Hydrogen bonds existing in the cell link different components to stabilize the crystal structure. The active data proved that the title compound has good anti-HBV activity.     

Synthesis and Structural Characterization of an Arene-ruthenium Complex [（η^6-p-cymene）Ru（μ-N3） （N3）]2

An arene-ruthenium dimeric complex, [（η^6-p-cymene）Ru（μ-N3）（N3）]2 1, was synthesized from the reaction of [（η^6-p-cymene）Ru（μ-Cl）（Cl）]2 with an excess NaN3 and charac- terized by single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1^- with a = 8.2321（8）, b = 8.2155（8）, c = 9.9976（11）A, α= 81.786（5）, β= 82.906（5）, γ= 77.134（5）°, V= 649.46（11）A^3, Z= 1, Mr = 638.68, Dc = 1.633 g/cm3,/t（MoKα） = 1.195 mm^-1, F（000） = 320, S = 0.974, the fmal R = 0.0282 and wR = 0.0644 for 2363 observed reflections with I 〉 2σ（I） and 157 variables. The neutral molecule is dimeric with two azide ligands bridging two ruthenium atoms to adopt an octahedral coordination geometry. The average Ru-Nt （terminal） and Ru-Nb （bridge） bond lengths are 2.092（3） and 2.147（2）A, respectively.     

Synthesis and Crystal Structure of 3-Benzyl-6-trichloromethyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole

The title compound 3-benzyl-6-trichloromethyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole I （C11HTC13N4S, Mr = 333.62） has been synthesized, and its structure was determined by elemental analyses, IR, ^1H NMR, ^13C NMR, and X-ray diffractions. The crystal is of triclinic, space group P1^-, with a = 5.898（3）, b = 10.510（4）, c = 11.580（5） A, α = 74.936（7）, β= 75.476（7）, γ = 79.647（7）°, V= 665.9（5）/A^3, F（000） = 336, Z= 2, Dc = 1.664 g/cm^3, 2 = 0.71073A, p = 0.834 mm^-1, the final R = 0.0605 and wR = 0.0900. The secondary bonding interactions （SBIs） S…N and π-π stacking interactions are found in the crystal structure and they link the molecules into a three-dimensional network.     

顽火辉石的高温高压同步辐射研究

 采用同步辐射能量色散X射线衍射技术、激光加热技术和金刚石对顶砧（DAC）高压装置,在温度为2 000 K和压力为23 GPa的范围内,对采自地幔二辉橄榄岩中的顽火斜方辉石,进行了原位的高温高压能量色散X射线衍射（EDXRD）测量。实验结果表明：当压力为15.3 GPa、温度为1 600 K时（相当于地球内部410 km处的地震波不连续界面的温压环境）,顽火斜方辉石转变为橄榄石的β相——瓦兹利石（Wadsleyite）相;继续加温加压至2 000 K、23 GPa时（相当于地球内部670 km处的地震波不连续界面的温压环境）,顽火斜方辉石相变为钛铁矿（Ilmenite）结构和钙钛矿（Perovskite）结构的混和相。实验结果进一步证明,在地幔中存在的两个地震波不连续界面是由橄榄石、顽火斜方辉石等矿物的相变引起的。     

抛体运动的讨论

抛体运动分平抛运动和斜抛运动．1平抛运动抛出的物体的初速度是水平方向的抛体运动叫做平抛运动．平抛运动在忽略空气阻力时,可以把它看作是水平方向的匀速直线运动和竖直方向的自由落体运动的叠加．在竖直平面内取直角坐标系如图1,并把物体被抛出的那一点作为坐标的原点O,设水平初速度为v_0．     

Syntheses, Crystal Structures and Properties of Two Supramolecules Assembled from Weak Interactions

Two complexes, [Cu2(Htdb)4(H2O)2] (1) and [Cd(bipy)2(Hmcmbc)2] (2) (H2tdb = 2,2-thiodibenzoic acid, H2mcmbc = m-(carboxyl-methyloxy)-benzenecarboxylic acid, bipy = 4,4'-bipyridine), have been prepared, and were characterized by elemental analysis, FT-IR and single-crystal X-ray diffraction. Structures indicate that complex 1 is a single molecule, and 2 is a one-dimensional chain. Their two-and three-dimensional frameworks are constructed through hydrogen bonding, π…π or C–H…π stacking, and such other weak interactions. The cyclic voltametric behavior of complex 1 and luminescence property of complex 2 were investigated. 1 belongs to the triclinic system, space group P with a = 7.8607(6), b = 11.7619(9), c = 15.3481(12) , α = 109.3670(10), β = 92.4420(10), γ = 92.0450(10)°, V = 1335.65(18) 3, Mr = 1256.26, Dc = 1.5619(2) g/cm3, F(000) = 642, μ = 1.029 mm–1, Z = 1, the final R = 0.0289 and wR = 0.0763 for 5199 observed reflections with I > 2σ(I). Complex 2 crystallizes in triclinic, space group P with a = 9.6378(10), b = 9.7508(10), c = 19.055(2) , α = 88.7020(10), β = 80.5260(10), γ = 69.2000(10)o, V = 1649.9(3) 3, Mr = 815.07, Dc = 1.641 g/cm3, μ = 0.732 mm-1, F(000) = 828, Z = 2, the final R = 0.0511 and wR = 0.1149 for 4729 observed reflections (I > 2σ(I)).     

钠改型天然斜发沸石对铵离子的交换性能

对分别来自国内三个产地和澳大利亚的沸石样品进行了铵离子交换性能的研究。在25℃下了样品的交换速率曲线。利用Verrmeulen's模型处理动力学数据，计算得到扩散系数，与文献报道的结果相一致，并发现不同样品的扩散系数与其致密程度相关。将粒度200mesh的沸石分别用三种不同方法聚集为颗粒，并测定了表观的扩散系数，均高于原颗粒的扩散系数，其中凝胶颗粒提高了一个数量级。     

Mo_8~ⅤW_2~ⅥO_(26)(C_5H_5N)_8·2H_2O: A Novel Mixed-valence Heterometal Polyoxometalate

A new mixed-valence heterometal cluster Mo8VW2VIO26(C5H5N)8·2H2O has been synthesized under solvothermal conditions and characterized by X-ray single-crystal diffraction, IR, UV-vis and XPS spectroscopy. The title compound crystallizes in the triclinic system, space group P1 with a = 11.708(3), b = 12.018(4), c = 13.316(4) , a = 112.184(4), β = 97.844(4), r = 110.043(3)o, V = 1551.9(8) 3 and Z = 1 at 293(2) K. The final full-matrix least-squares refinement converged to R = 0.0414 for 4460 observed unique reflections with I 2σ(I) and w R = 0.1290 for all data(5352) and S = 1.015. In addition, its thermal stability and fluorescent property have also been investigated.     

钠型斜发沸石在K^＋-Na^＋-NH4^＋和K^＋-Na^＋-Ca^2＋水溶液体系中的离子交换平衡

研究了K -Na -NH4 和K -Na -Ca2 水溶液体系与钠型斜发沸石的离子交换平衡。分别测定出以上两个体系在25℃、50℃和75℃下的离子交换平衡数据,利用平面三角图绘制表达出三元离子交换平衡等温线,并计算出沸石对体系中离子的分离因数。结果表明,在K -Na -NH4 溶液体系中,K 的分离因数在3以上,NH4 的分离因数在1~3之间,Na 的分离因数小于1,斜发沸石的离子交换选择顺序是K >NH4 >Na ,且低温有利于K 的交换,高温时NH4 的交换能力增强;在K -Na -Ca2 溶液体系中,K 的分离因数大于8,Na 的分离因数在1左右,Ca2 分离因数小于1,沸石的离子交换选择顺序是K >Na >Ca2 ,其中Ca2 属于部分交换,Ca2 对沸石对K 的交换选择性影响不大,且低温有利于沸石对K 的交换。     

Synthesis and Crystal Structure of [K（2,2,2-crypt）]_3Sb_（11）

The title complex [K(2,2,2-crypt)]3Sb11 has been prepared by the reaction of K3Cd2Sb with Cu-C≡CH in ethylenediamine in the presence of 2,2,2-crypt, and characterized by low temperature X-ray structure analysis. The crystal is of orthorhombic system, space group C2221 with a = 15.475(3), b = 22.807(5), c = 24.834(6), V = 8765(3)3, Dc = 1.960 g/cm3, C54H108K3N6O18Sb11, Mr = 2586.01, F(000) = 4944, μ = 3.531 mm-1, Z = 4, R = 0.0442 and wR = 0.1053 for 10265 observed reflections (I > 2σ(I)). The "naked" Sb113- anion is stable due to the completely sequestered alkali metal cations through ion-ion interactions.