首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
A new copper(H) complex [Cu2(DMF)(H2O)(C7H4NO4)2(C7H3NO4)]2-3.5DMF has been synthesized and its structure was determined by single-crystal X-ray diffraction. The crystal is of triclinic, space group P1^- with a = 10.722(3), b = 18.170(4), c = 20.923(7)A,α = 105.297(9), β = 101.701(10), γ = 105.74(1)°, V= 3615(1)A^3, Z = 2, C58.50H64.50Cu4N1l.50O3150, Mr = 1686.90, Dc = 1.550 g/cm^3,μ= 1.255 mm^-1, F(000) = 1728.00, T = 150(2) K, the final R = 0.0640 and wR = 0.173 for 11310 observed reflections with I 〉 2σ(I). In the crystal, each formular unit consists of two dinuclear copper(H) compounds, between which the O-H…O hydrogen bonds exist. Each Cu^Ⅱ cation is six-coordinated in an octahedral geometry. The intermolecular hydrogenbonding interaction leads to a 3-D framework of the title compound.  相似文献   

2.
A new heteropolyoxotungstate [(C2H4N2)4(P4Co3W4O28H6)(H2C2O4)]n with a three-dimensional framework was hydrothermally synthesized.The compound crystallizes in a tetragonal system,space group I41/a with a = 17.1006(17),b = 17.1006(7),c = 10.7525(5),V = 3144.2(2)3,Z = 4,Dc = 3.795 g·cm-3,F(000) = 3300,MoKα(λ = 0.71073 ),μ = 16.460 mm-1,the final R = 0.0335 and wR = 0.0776.In the heteropolyoxotungstate,tungsten-oxygen octahedra are linked by sharing two cis-vertexes into an infinite helical chain extending along the c axis.Cobalt atoms in the octahedral geometry act as the linkers of these chains,forming a three-dimensional framework.The cobalt and phosphorus atoms in the tetrahedral geometry play a role in stabilizing the three-dimensional framework.Ethylenediamine molecules are polymerized into organic chains which locate in the interspaces of the framework in the way of interwinding with the W-O chains.  相似文献   

3.
黄小荣  周锡庚 《结构化学》1998,17(6):449-453
(C5H4CH3)3Ho和(C5H4CH3)2Ho(C5H5)与5-本基四唑在THF中反应,得到了复合产物「(C5H4CH3)2HoN4CPh」2.「(C5H4CH3)(C5H5)HoN4CPh」2,该晶体属三斜晶系,P1空间群,晶胞参数为a=9.386(3),b=13.071(3),c=16.571(2)A,α=86.90(1),β=74.61(2),γ=77.30(2)°,V=1912.8(8  相似文献   

4.
5.
6.
7.
傅瑞标  吴新涛  胡胜民  王龙胜 《结构化学》2004,23(10):1107-1110
1 INTRODUCTION Metal organophosphonates have attracted considerable attention for over three decades due to their potential or practical applications, include- ing ion exchanges[1, 2], molecular sensors[3] and optics[4, 5]. Recently, a number of porous m…  相似文献   

8.
[PrAl(CF3COO)2(CF3CHOO)(C2H5)2(C4H8O)2]2 Mr=1420.56, monoclinic, P21/n, a=10.651(6), b=24.276(9), c=11.110(5)(), β=107.650(4)°, V=2737.4(1)()3, Z=2, Dc=3.45 g/cm3, F(000)=2816, T=233K, MoKα radiation (λ=0.71069()), μ(MoKα)=38.017 cm-1, R=0.048 for 2847 observed reflections (I≥3σ(I)). It is isostructural with [LnAl(CF3COO)2(CF3CHOO)-R2(C4H8O)2]2 (Ln=Ho, R=Et; Ln=Nd, Y, R=iBu). Pr3+ is coordinated by eight oxygen atoms from five bridging ligands and two THF forming a distorted bicap-prism.  相似文献   

9.
10.
尹汉东  王传华  邢秋菊 《结构化学》2004,23(10):1127-1132
1 INTRODUCTION The chemistry of organotin(IV) complexes was extensively studied due to their biological activity and coordination chemistry[1~7]. More recently, phar- maceutical properties of alkyltin(IV) complexes with dithiocarbamate ligands have bee…  相似文献   

11.
12.
Synthesis and Structure of [Cu(OH)2(H2O)2(4—C5H4N—COOH)2]   总被引:1,自引:0,他引:1  
钟兆思  孙道峰 《结构化学》2001,20(6):478-480
1 INTRODUCTION Supramolecular chemistry and crystal engineering of coordination compounds have attracted considerable interests nowadays owing to the fascinating structural diversity and potential applications as functional materials[1,2]. Generally, architectures of supramolecules are formed through hydrogen bonds, ?- ?stacking interaction or other weak interactions between the molecules. Recently, many supramolecular compounds containing silver(I) and copper(II) species have been re-…  相似文献   

13.
14.
1 INTRODUCTION Synthesis of transition metal complexes with Schiff-base has been a subject of considerable importance [1,2]. They are not only good complexing agents for Schiff-base, but also good bactericide and antitumour agent [3,4]. At present, there is a spectacular growth in this field. Recently, some bridged binuclear complexes have received much attention on account of their biological relevance and condensed-phase magnetic properties[5,6]. Especially, the complexes containin…  相似文献   

15.
16.
17.
CRYSTAL STRUCTURE OF {Ni[(C4H9O)2PS2](C12H8N2)2}   总被引:5,自引:1,他引:5  
俞运鹏  徐正 《结构化学》1990,9(1):73-76
  相似文献   

18.
(n—C4H9)4N2(OC14H8O2)Mo4O10(OCH3)2的合成和晶体结构   总被引:4,自引:1,他引:4  
为探讨钼多酸根阴离子在有机化学反应中的催化机理,用菲醌作底物合成了(n-C4H9)4N)2(OC14H8O)2Mo4O10O10(OCH3)2)配合物,X射线单晶结构分析表明,该晶体属单斜晶系,空间群P21/c,a=1.3149(5)nm,b=1.8666(8)nm,c=1.8903(3)nm,β=104.06(3)Z=2.收集到独立衍射点3505个,其中1382个为可观测点,最终一致性因子R=0  相似文献   

19.
1 INTRODUCTION Pronounced interest has recently been focused on the supramolecular chemistry and crystal enginee- ring of coordination compounds organized by coor- dinate covalent or molecular contacts like hydro- gen-bonding, π-π interactions, et al. because of their fascinating structure diversity and potential applica- tions as functional materials in catalysis and separa- tion[1]. A lot of infinite one-, two- and three-dimen- sional coordination frameworks have been synthe- sized, s…  相似文献   

20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号