共查询到20条相似文献,搜索用时 93 毫秒
1.
2.
3.
4.
5.
6.
以对乙酰氨基苯甲酸和2,2′-联吡啶为配体合成了一个新配合物[Cd(C9H8O3N)2(2,2′-bipy)(H2O)]2·(H2O)3。该配合物晶体属三斜晶系,空间群P1,晶胞参数:a=1.2559(3)nm,b=1.5068(3)nm,c=1.6507(3)nm,α=112.14(3)°,β=101.83(3)°,γ=93.84(3)°,V=2.7959(10)nm3,Dc=1.592g·cm-3,Z=4,μ(MoKα)=0.840mm-1,F(000)=1364,最终偏离因子R1=0.0276,wR2=0.0683。标题配合物的不对称单元由2个独立的单核结构Cd(C9H8O3N)2(2,2′-bipy)(H2O)和3个晶格水分子组成。中心镉髤离子处于六配位的变形八面体环境中。本工作测定了配合物的荧光和电化学性能。 相似文献
7.
通过一种新的肟类配体HL(HL=1-(4-{[(E)-3-乙氧基-2-羟苯亚甲基]氨基}苯乙酮肟)与一水合乙酸铜反应,合成了一种铜(Ⅱ)配合物[Cu(L)2].CH3OH。X射线单晶结构分析表明该配合物是一种单核配合物,其中铜(Ⅱ)原子以四配位的形式分别与2个单肟配体的酚氧原子和亚胺氮原子结合,形成稍微扭曲的平面四边形几何构型。O和N配位原子互为反式,所形成的Cu1N2O2平面和Cu1N4O5平面的二面角为23.33(3)°。在这个晶体结构中,每1个配合物分子分别与近邻的2个配合物分子通过O-H…O氢键连接,沿b轴形成了1个一维的无限延伸的链状结构。 相似文献
8.
A one-dimensional zigzag chain complex of Cd(FA)(pyim)(H2O) (1) (H2FA=4,4′-(hexafluoroisopropylid-ene)bis(benzoic acid) and pyim=2-(2-pyridyl)imidazole) was hydrothermal synthesized from Cd(NO3)2·4H2O, 4,4′-(hexafluoroisopropylidene)bis(benzoic acid) and 2-(2-pyridyl)imidazole. Single-crystal X-ray analysis revealed that the zigzag chains of 1 are linked into three-dimensional supramolecular networks by both O-H…O hydrogen-bonds and π…π stacking interactions. The crystal is of monoclinic, space group P21/n with a=0.856 34(10) nm, b=1.020 49(12) nm, c=2.809 0(3) nm, β=98.115(2)°, V=2.430 2(5) nm3, Dc=1.820 g·cm-3, Z=4, F(000)=1 320, Goof=1.009, R1=0.047 0, wR2=0.115 5. In addition, complex 1 exhibits strong photoluminescent emission at room temperature. CCDC: 733837. 相似文献
9.
10.
以3,3',4,4'-偶氮苯四羧酸(ABTC)和1,10-菲罗啉(phen)为配体,金属Zn(Ⅱ)为配位中心,采用溶剂挥发法在乙醇水中合成了新型夹心双核配合物[Zn2(ABTC)(phen)2(H2O)6·2H2O(1)],其结构和荧光性能经元素分析,X-射线单晶衍射和FL表征。1属单斜晶系,空间群C12/c1(15),晶胞参数a=24.774(3),b=12.853 8(13),c=14.698 3(15),β=94.195(2)°,V=4 668.0(8)3,Dc=1.584 Mg·cm-3,Z=24,F(000)=2 232,μ=43.083 mm-1,Goo F=0.969,R1=0.164 2,ωR2=0.047 3。ABTC作为桥梁配体,夹在两个配位中心中间。通过两个游离的水分子及配位分子的氢键作用,堆积成三维超分子孔道结构。在280 nm激发波长激发下,1在415 nm处有强的荧光发射峰。 相似文献
11.
The compound (H3IDC)(Prz)0.5(H2O) (H3IDC = imidazole-4,5-dicarboxylate, Prz = piperazine) has been prepared from a hydrothermal approach and was characterized by IR analysis and X-ray diffraction. Its crystal structure consists of discrete 4,5-imidazole-dicarboxylate, H2O and piperazine molecules. The whole structural motif was assembled by three different non-covalent interactions of O-H…O, N-H…O and π-π stacking, which play an important role in packing the molecules. Interestingly, the connections between imidazole-4,5-dicarboxylate molecule and water molecule result in a helical polymeric chain. Crystal data for compound 1: monoclinic system, space group P21/c, a = 6.4600(13), b = 19.910(4), c = 6.9123(14) A^°, β = 94.26(3)°, V= 886.6(3) A^°^3, Z= 4, C7H10O5N3, Mr = 216.18. 相似文献
12.
Synthesis and Crystal Structure of [{Cd(hmbdc)(H_2O)_3}·2H_2O]_n 总被引:1,自引:0,他引:1
A novel coordination polymer [{Cd(hmbdc)(H2O)3}·2H2O]n (hmbdc = 5-hydroxy- isophthalic acid) has been synthesized and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/c, with a = 9.599(3), b = 18.699(5), c = 7.557(2) , β = 108.198(4)°, V = 1288.6(6) 3, Z = 4, Mr = 382.60, Dc = 1.972 g/cm3, F(000) = 760, μ = 1.740, the final R = 0.0555 and wR = 0.0995 for 1732 observed reflections with I > 2σ(I). The structural analysis shows that the intermolecular hydrogen bonds and π-π interactions result in a three-dimensional supramolecular framework. 相似文献
13.
A novel complex [Zn(FcCOO)2(2,2'-bipy)(H2O)]2·H2O (Fc = (η5-C5H5)Fe(η5-C5H4), 2,2'-bipy = 2,2'-bipyridine) has been synthesized and characterized by elemental analysis, IR and X-ray diffraction. It crystallizes in monoclinic system, space group P21/c with a = 6.8187(4), b = 21.7155(13), c = 19.7411(12) A, α = 90, β = 97.7420(10), γ = 90o, C64H58Fe4Zn2N4O11, Mr = 1413.28, V = 2896.4(3) A3, Dc = 1.620 g/cm3, Z = 2, F(000) = 1444, μ(MoKα) = 1.857 mm-1, R = 0.0523 and wR = 0.0982 for 3219 observed reflections (I > 2σ(I)). Structural analysis shows that the zinc atom is coordinated with three oxygen atoms from two ferrocenemonocarboxylates and one water molecule together with two nitrogen atoms from 2,2'-bipyridine, giving a distorted square-pyramidal coordination geometry. The complex molecules are linked to form an infinite one-dimensional chain by both intermolecular hydrogen bonds and π-π stacking interactions of the bipyridine rings. 相似文献
14.
在水热条件下(120℃),将醋酸锰、4,4′-联吡啶(4,4′-bpy)与9-蒽酸(9-HAC)反应,得到了配位聚合物[Mn(9-AC)2(4,4′-bpy)(H2O)2]n,通过元素分析、红外光谱、X射线单晶衍射对其进行了表征,并用TGA研究了该配位聚合物的热稳定性.结构解析结果表明,该晶体属于正交晶系,Fdd2空间群,a=1.66772(12)nm,b=3.36471(16)nm,c=1.1687(4)nm,V=6.558(2)nm3,Z=8,Mr=689.60,Dc=1.397Mg/m3,R=0.0356,wR2=0.0604.在该配位聚合物中,中心锰原子采取略微变形的八面体构型,与两种配体共同构筑了一维直线形链结构,链与链之间通过氢键相互作用构筑成三维超分子网络. 相似文献
15.
Cu(sahm)_2·4H_2O的合成及晶体结构 总被引:4,自引:1,他引:4
标题化合物Cu(sahm)_2·4H_2O,C_(22)H_(30)N_8O_(10),M_r=629.5(sahm=4-(邻羟基苯基亚甲基)-亚胺-3.5-二羟甲基-1,2,4-三唑)被合成并得到单晶。X-衍射结构分析表明,晶体属单斜晶系,空间群P2_1/c,晶体学数据:a=8.3189(8)A,b=9.827(1)A,c=16.126(2)A,β=102.585(9)°,V=1286.6(3)A~3,Z=2,D_x=1.48g/cm~3,μ=0.907mm(-1),F(000)=598。最终偏离因子R=0.042,R_w=0.057。结构分析表明,分子中两个偶氮甲碱的N原子及两个酚氧原子与中心Cu原子配位,形成规则的菱形平面结构。 相似文献
16.
4-氨基-3,5-二甲基-1,2,4-三唑(TZ)与水杨醛缩合形成4-(邻羟苯基亚甲基)-亚胺-3,5-二甲基-1,2,4-三唑Schiff碱(SATZ),该Schiff碱与Cu(ClO_4)_2·6H_2O形成配合物Cu(satz)_2·6H_2O,分子式为C_(22)H_(22)CuN_8O_2·6H_2O。经X射线晶体结构分析表明,晶体属于单斜晶系,空间群P2_1/c,Z=2,α=8.202(1),b=19.569(4),c=8.972(8)A,β=107.72°(2),V=1371.8(5)A3,Dc=1.46g/cm ̄3,μ=0.853mm ̄(-1),F(000)=630,R=0.051,R_w=0.062。分子中2个偶氮甲碱(-C=N-)中 的N原子及2个酚氧原子与中心Cu原子形成规则的菱形平面结构。 相似文献
17.
A novel Mn(Ⅱ) complex Mn2(phen)2(p-MBA)4(H2O) has been hydrothermally synthesized by the reaction of p-methyl benzoic acid (p-MBA) with 1,10-phenanthroline (phen). Crystal data for this complex: monoclinic, space group C2/c, a= 2.3328(3), b =1.5549(2), c = 1.5557(2) nm, β = 121.726(2)°, V= 4.7997(11) nm^3, Mr = 1028.85, Dc = 1.424 g/cm^3, Z = 4, F(000) = 2128, μ(MoKa) = 0.590mm^-1, GOOF = 1.060, R = 0.0333 and wR = 0.0767. In the crystal, each Mn(Ⅱ) ion is coordinated by two nitrogen atoms from one o-phenanthroline molecule, three oxygen atoms from three p-methyl benzoic acids and one oxygen atom from one water molecule, giving a six-coordinate distorted octahedral coordination geometry. Two neighboring Mn(Ⅱ) ions are bridged by two p-methyl benzoic acid groups and one water molecule, and their end positions are respectively coordinated by one 1,10-phenanthroline and one p-methyl benzoic acid molecule, giving a binuclear cage structure, of which the Mn(Ⅱ)…Mn(Ⅱ) distance is 0.3502 nm. 相似文献
18.
IntroductionSalicylicacid (2 oxybenzoicacid ,H2 Sal)anditsderivativeshavebeenknownforalongtimetopossessan ti inflammatoryactivity ,1whileithasbeenfoundthatthebiologicalactivityofawidevarietyoforganicdrugsisen hancedupontheirmetalcomplexation .2 ,3Forexample ,bis(salicylato)copper(II)isastrongeranalgesicandanti inflammatoryagentforanimalsthansalicylicaciditself,4andthecopper(II)complexofaspirin ,Cu2 (aspirin) 4,isamoreeffectiveanti inflammatoryandanti rheumatoida gentthanaspirinitself.5,6 I… 相似文献
19.
用4,5-二氮芴-9-酮(dafo)、邻苯二甲酸和硝酸铜合成了二价铜的一维链状超 分子化合物[Cu(dafo)_2(H_2O)_2]-(OPA)_2(OPA=邻苯二甲酸一价阴离子),其结构 通过单晶X射线衍射法确定。该化合物是单斜晶系,空间群为P2(1)/c。晶胞参数: a = 0.71093(16)nm, b = 1.5724(4)nm, c = 1.5357(3)nm, α=90.000(5) °, β =102.220(4) °,γ=90.000(5) °, V = 1.6778(6)nm~3, Z = 2, F(000) = 814, M_r = 794.17, D_c = 1.527 g/cm~3, μ = 0.727 mm~(-1), R_1 = 0.0406, wR_2 = 0.0930.单晶结构分析表明该化合物具有一维链状结构,该结构是通过氢 键这种弱相互作用形成的。 相似文献
20.
SHEN Cheng 《结构化学》1997,(1)
1INtrODUCTIONThecrownethercomPOundsandtheirderivativeshavecontinuouslyattractedconsiderableattentioneversincetheywerefirstreportedin1967illbecauseoftheirexcellentcapacitytoattachmetalatomstoformcomplexes.Nowadaystheyareappliedextensivelyinchemistry,biology,medicine,agriculture,metallurgyandmanyotherfields.Manypapersonsynthesesofnewcrownethers,theirstructuredeterminationandcharactersareoftenpublished.Inthestudiesthenitrifiedreactionofcrownetherisknownasasignificantwaybywhichfunctionalgroup… 相似文献