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Syntheses, characterization, and luminescence of two lanthanide complexes [Ln2(acetate)6(H2O)4]·4H2O (Ln=Tb(1), Sm(2)) ZHOU Zhengyuan1,YU Qiongyan1,ZHOU Xiuxia1,CAI Yuepeng1,YIN Xia1,LIU Maosheng1,CHEN Jianqiao1 (1.School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China) Abstract:Two dinuclear compounds [Ln2(acetate)6(H2O)4]·4H2O (Ln=Tb(1), Sm(2)) were......
Crystal Structure and Luminescence Spectra of Novel Coordination Layer of {[Eu(m-BDC)(NO3)(Phen)(H2O)]2·2CH3CH2OH}n Xia Jiangbin1,Lu Shaozhe2,Wang Mingzhao1,Cai Guanliang3 (1.Department..., China) Abstract:The crystal structure of a novel Eu3+ coordination polymer, {[Eu(m-BDC)(NO3)(Phen)(H2O)]2 · 2CH3CH2OH}n (m-BDC=1,3-benzenedicarboxylate, Phen=1, 10-phenanthroline), was obtained and its......
Syntheses and Crystal Structure of Nine-Coordinate Mononuclear Na[ EuⅢ (edta)(H2O)3] · 4H2O and Binuclear Na4[Eu2Ⅲ(Httha)2]·10H2O Complexes Wang Yu1,LIU Zhenrong1,Liu Xinzhu1,Tong Jian1,ZHANG... = ethylenediaminetetraacetic acid) and Na4[Eu2Ⅲ (Httha)2] · 10H2 O ( ttha = triethylenetetraminehexaacetic acid) complexes were determined by single-crystal X-ray structure analyses.The crystal of Na[ EuⅢ (edta) (H2O)3......
反相微乳液法制备纳米四水羟基硝酸氧铋 范力仁1,栗海峰1,段运1,罗冬冬2 (1.中国地质大学,材料科学与化学工程学院,湖北,武汉,430074;2.中南民族大学,化学材料学院催化材料科学湖北省重点实验室,湖北,武汉,430074) 摘要:用Triton X-100/正己醇/环己烷/盐溶液的四元反相微乳液体系制备了纳米四水羟基硝酸氧铋((Bi6O4(OH)4)(NO3)6(H2O)4),研究了不同比例Triton X-100,正己醇,环己烷对微乳液体系的影响,绘制了反相微乳液体系的拟三元相图,确定了室温下微乳液法制取纳米四水羟基硝酸氧铋的最佳条件,制备出了棒状和片状两种产物,利用TEM,IR,XRD,TG-DSC等手段对产物的结构和性能进行了表征. 关键词:反相微乳液; 纳米(Bi6O4(OH)4)(NO3)6(H2O)4; 拟三元相图; [全文内容正在添加中] ......
Cis-[Pt(NH3)2(H2O)2](NO3)2与1,1-环丁烷二羧酸钠形成的一种新的Pt(Ⅱ)配合物 傅文甫1,李瑞丹2,余尧2,谌喜珠2 (1.中国科学院,理化技术研究所,北京,100101;2.昆明贵金属研究所,云南,昆明,650106) 摘要:从Cis-[Pt(NH3)2(H2O)2](NO3)2 与1,1-环丁烷二羧酸钠的化学反应中,分离出一种新的Pt(II)配合物,通过元素分析,红外光谱, 质谱和高效液相色谱的分析测试,初步推测结构为顺式-四氨-μ-二(1,1-环丁烷二羧酸根-O1,O2)合二铂的新化学结构式. 关键词:配位化学; 铂(II); 双核配合物; 合成; coordination chemistry; platinum(II); dinulear complex; synthesis; [全文内容正在添加中] ......
of many failure subsystems and their influences on each other by using multilevel hierarchical structure model and obtaining the critical subsystems. Finally, failure mode effects and criticality analysis...-interpretative structural modeling (DEMATEL-ISM); failure mode effects and criticality analysis (FMECA)......
approach (BEA) that quantitatively predicts the Au concentration from main effects (X), quadratic terms (X2) and the first order interaction (Xi×Xj) of Ag, Cu, Pb, and Zn by initialization, order... effects with Au mineralization, Pb, Ag2, and Ag×Pb are important predictors in boreholes RQM, while the threshold value is known as an important predictor in the trenches model. The RQMs R2(pred) equal......
一维链状氰根桥联配合物[Pr(bet)2(H2O)3Fe(CN)6]n的合成,晶体结构和磁性 王华冬1,陈志达1,闫冰1 (1.北京大学化学与分子工程学院,) 摘要:以K3Fe(CN)6, 甜菜碱和Pr(NO3)3*6H2O合成了一维链状氰根桥联配合物[Pr(bet)2(H2O)3Fe(CN)6]n, 并通过元素分析,红外光谱进行了表征. 利用单晶X射线四圆衍射测定了配合物的晶体结构, 晶体属正交晶系, P2 12121空间群, 晶胞参数a=0.9634(2) nm, b=1.4556(3) nm, c=1.7 798(9) nm, V=2.4959(9) nm3, Dc=1.706 Mg*m3, Z=4, GOF=0 .970, F(000)=1284, R1=0.0307. 变温磁化率(1.8~300 K)表明在Pr3+ 和Fe3+离子间存在弱的反铁磁相互作用. 关键词:稀土......
Magnetic properties and magnetocaloric effects of PrSiLi-Chen Wang,Bao-Gen ShenState Key Laboratory for Magnetism, Institute of Physics,Chinese Academy of Sciences摘 要:Magnetic properties and magnetocaloric effects(MCEs) of the PrSi compound were studied. The PrSi compound undergoes a second-order ferromagnetic-to-paramagnetic transition at the Curie......
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