共查询到20条相似文献,搜索用时 859 毫秒
1.
Jines E. Contreras Belkis Ramírez V. Graciela Díaz de Delgado 《Journal of chemical crystallography》1997,27(7):391-395
[Cd(C5H4O4)(OH2)2] (1), crystallizes in the monoclinic system, space groupP21/n, with lattice parametersa=7.323(2),b=16.028(6),c=7.202(2) Å, β=113.11(1)°, andZ=4. The Cd atom coordinates to seven oxygens in a monocapped trigonal antiprism fashion. The antiprisms share one vertex to form chains which run approximately parallel to thec axis. The itaconate ligands link the chains to form layers which stack along theb axis. 相似文献
2.
I. V. Medrish E. V. Peresypkina A. V. Virovets L. B. Serezhkina 《Crystallography Reports》2008,53(3):462-465
Three heteroacidoligand uranyl complexes M
4[(UO2)2C2O4(SO4)2(NCS)2] (M = K+ (I), Rb+ (II)) and K4[(UO2)2C2O4(SeO4)2(NCS)2] (III) have been synthesized and their crystal structure has been determined by X-ray diffraction analysis. The compounds I–III are isostructural and crystallized in the monoclinic system, sp. gr. P21/c, Z = 2, a = 11.5548(3) ?, b = 7.0847(1) ?, c = 13.5172(3) ?, β = 93.130(1)°, V = 1104.90(4), R = 0.015 (I); a = 11.5854(9) ?, b = 7.3841(6) ?, c = 13.9072(9) ?, β = 95.754(3)°, V = 1183.74(15), R = 0.0235 (II); a = 11.6715(3) ?, b = 7.1418(2) ?, c = 13.8546(1) ?, β = 93.539(1)°, V = 1152.66(5), R = 0.0126 (III). Basic structural units of these crystals are [(UO2)2C2O4(XO4)2(NCS)2]4− chains, which belong to the crystallochemical group A
2
K
02
B
22
M
21 (A = UO22+, K
02 = C2O2−4, B
2 = SO42− or SeO42−, M
1 = NCS−) of uranyl complexes. Uranium-containing chains are connected into a 3D framework via a system of electrostatic interactions
with potassium or rubidium cations from outer spheres.
Original Russian Text ? I.V. Medrish, E.V. Peresypkina, A.V. Virovets, L.B. Serezhkina, 2008, published in Kristallografiya,
2008, Vol. 53, No. 3, pp. 495–498. 相似文献
3.
Abstract
A cadmium(II) coordination polymer [Cd2(2-mBIM)2Cl2(C4H4O4)(H2O)2(H2O)] n (1) (wherein 2-mBIM = bis(2-methylimidazo-1-yl) methane, C4H4O4 = succinate anion) has been synthesized and characterized by X-ray diffraction. Complex 1 crystallizes in the monoclinic space group C2/c with a = 23.5265(15) ?, b = 7.3558(5) ?, c = 17.4771(11) ?, β = 90.3560(10)°, V = 3024.5(3) ?3, Z = 4. Each Cd(II) atom is octahedrally coordinated and connected with two adjacent Cd(II) atoms by two individual 2-mBIM ligands in a trans-configuration to form one-dimensional (1D) helical structure. Such 1D helical chain structures were connected to each other via the succinate anion ligands and result in the formation of a two-dimensional (2D) framework. Meanwhile, an overall three-dimensional (3D) supramolecular network was formed via the weak hydrogen bond interactions between metal-coordination and free water molecules. 相似文献4.
Xin-hua Lu Jing-jing Liang Jing Zhao Yong Zhang Ding-xian Jia 《Journal of chemical crystallography》2011,41(4):557-562
Abstract
Two neodymium thiostannates [Nd(dien)3]2[(Sn2S6)Cl2] (1) and [Nd(dien)3]2[(Sn2S6)(SH)2] (2) (dien = diethylenetriamine) were synthesized by the reaction of tin and sulfur in the presence of NdCl3 and Nd2O3, respectively under solvothermal conditions. Compounds 1 and 2 crystallize in monoclinic space group P21/n. Crystallographic data for 1: a = 11.6722(16), b = 15.119(2), c = 14.1566(19) ?, β = 96.213(3)°, V = 2483.6(6) ?3, Z = 4. For 2: a = 11.7190(14), b = 15.2168(19), c = 14.2209(18) ?, β = 95.775(4)°, V = 2523.1(5) ?3, Z = 4. The nine-coordinate [Nd(trien)3]3+ complex cation formed in situ acts as the counter ion to the [Sn2S6]4− anion. The [Nd(dien)3]3+, [Sn2S6]4− and Cl– (or SH–) ions form a 3-dimensional network structure through the N–H···S and N–H···Cl hydrogen bonds. 相似文献5.
A. S. Antsyshkina G. G. Sadikov A. L. Poznyak V. S. Sergienko 《Crystallography Reports》2005,50(3):406-409
A complex of copper(II) with the diethylenetriaminemonopripionate ligand [Cu2(4-Dtmp)2](ClO4)2 (I) is synthesized and characterized using X-ray diffraction. The crystals of compound I are monoclinic, a = 7.740(2) Å, b = 19.199(3) Å, c = 8.449(2) Å, β = 91.61(2)°, Z = 2, and space group P21/n. The structural units of crystal I are centrosymmetric dimeric cations and statistically disordered ClO
4
−
anions. In the cation, the copper atom is coordinated by three N atoms [mean Cu-N, 2.01(1) Å] and two O atoms [Cu-O, 2.134(6)
Å and 1.958(7) Å] of the pentadentate bridging-chelate Dtmp ligand, which occupy vertices of the trigonal bipyramid. The binuclear cations are linked via centrosymmetric pairs of hydrogen
bonds into ribbons aligned parallel to the a axis of the crystal. The ClO
4
−
anions form columns in the same direction. In the crystal, the cationic ribbons and anionic columns alternate in a chessboard
fashion.
__________
Translated from Kristallografiya, Vol. 50, No. 3, 2005, pp. 450–454.
Original Russian Text Copyright ? 2005 by Antsyshkina, Sadikov, Poznyak, Sergienko. 相似文献
6.
Lijie Han Xiaochang Sun Yalin Zhu Wanli Zhou Qi Chen Yan Xu 《Journal of chemical crystallography》2010,40(7):579-582
Abstract
Erbium (III) coordination compound with the formula [Er(IN)3(H2O)2]n 1 (HIN = isonicotinic acid) was synthesized by mixing Er2O3 with isonicotinic acid under hydrothermal condition. The structure of the title compound was determined by single crystal X-ray diffraction analysis, which reveals that the 1-D chain-like structure is formed by the erbium polyhedra through the carboxyl groups of IN. It crystallizes in the monoclinic system, possesses space group C2/c, with lattice parameters: a = 20.229(10) ?, b = 11.594(6) ?, c = 9.871(5) ?, α = γ=90°, β = 115.509(6)°, V = 2089.3(18) ?3, and D calc = 1.811 mg/cm3 for Z = 4, F(000) = 1108, GOF = 1.109, R1 = 0.0675. Compound 1 has been characterized by IR absorption spectroscopy, ultraviolet excitation and emission spectrum. 相似文献7.
Slaheddine Chaabouni Slaheddine Kamoun Abdelaziz Daoud Tahar Jouini 《Journal of chemical crystallography》1997,27(7):401-404
The pentakis ethylenediammonium bis undecachlorodiantimonate(III) tetrahydrate salt is monoclinic with the following unit
cell dimensions:a=16.271(5) Å,b=13.004(4) Å,c=13.932(4) Å, β=111.72(2)°, space groupP21/c withZ=2. The structure was solved by Patterson methods and refined to a finalR value of 0.023 for 4435 reflections withF
0>4σ(F
0). The structure shows a layer arrangement perpendicular to thea axis: planes of the [Sb2Cl11]5− bioctahedra alternate with planes of [NH3(CH2)2NH3]2+ dications. The [Sb2Cl11]5− bioctahedra are connected through O−H...Cl hydrogen bonds, such that infinite chains of composition [Sb2Cl11(H2O]n
5n− are formed in the structure, parallel to the twofold axis. These chains are themselves interconnected by means of N−H...Cl
and O−H...Cl bonds originating from the [NH3(CH2)2NH3]2+ entities and the water molecules, respectively, and form a threedimensional network. 相似文献
8.
Abstract
A new acetyl phosphorylamidate P(O)[NHC(O)C6H4(4-NO2)][N(CH(CH3)2)(CH2C6H5)]2 has been synthesized and characterized by elemental analysis, 1H, 13C and 31P NMR, IR and single crystal X-ray diffraction. Single crystal X-ray analysis shows that it belongs to triclinic system, space group P[`1] P\bar{1} , with a = 10.5868(16) Å, b = 11.8058(18) Å, c = 12.4364(19) Å, α = 65.410(3)°, β = 67.492(4)°, γ = 85.879(3)°, V = 1,298.6(3) Å3, and Z = 2. The intermolecular PO···HN hydrogen bond makes H-bonded dimer of molecule with Ci symmetry. In the crystal network, the dimers are aggregated in the chain arrays through π-stacking between p-NO2–C6H4–C(O)–NH– moieties. Moreover, weak C–H···O and C–H···π interactions exist in the crystal network. 相似文献9.
Yapeng Shi Xinzhong Lu Feng Fu Ganglin Xue Huaiming Hu Jiwu Wang 《Journal of chemical crystallography》2005,35(12):1005-1010
A novel bifunctionalized arylimido derivative of hexamolybdate [n-Bu4N]2[Mo6O17(o,p-(MeO)2C6H3N)2] (1) was synthesized by self-assembled metathesis of α-type octamolybdate ion and 2,4-dimethoxyaniline and structurally characterized
by crystal X-ray diffraction. Crystallographic data for1: monoclinic system, space group:C2/c,a = 17.319(4),b = 18.087(4),c = 21.357(5) ?, β = 106.486(4),V = 6415(2) ?3, andZ = 4,Dc = 1.693 g/cm3,R1 = 0.0439. The complex has a short Mo–N bond length of 1.735(5) ? and an imido (Mo–N–C) bond angle of 177.8(4)∘. The complex has also been characterized by1H NMR, IR, and UV–vis spectroscopy. 相似文献
10.
Li-Ping Cao Xiang-Gao Meng Jiao-Yang Ding Hai-Ling Xi An-Xin Wu 《Journal of chemical crystallography》2011,41(3):425-429
Abstract
Two new glycoluril derivatives, namely 6-phenyl-1,4-dioxo-2,2a,3,4,6,7-hexahydro-1H,5H-2,3,4a,6,7a-pentaazacyclopenta[cd]indene-2a,7b-dicarboxylate (1), and diethyl 6-(2,4-dichorophenyl)-1,4-dioxo-2,2a,3,4,6,7-hexahydro-1H,5H-2,3,4a,6,7a-pentaazacyclopenta[cd]indene-2a,7b-dicarboxylate (2) have been synthesized and structurally determined by X-ray diffraction analysis. Compound 1 is, monoclinic, space group C2/c, with a = 20.0784(7), b = 9.0316(3), c = 23.0980(8) ?, β = 98.3930(10), V = 4143.7(2) ?3, with Z = 8 for d calc = 1.338 Mg/m3. The analog 2 is, Triclinic, space group P-1, with a = 8.9353(18), b = 10.466(2), c = 14.679(3) ?, β = 73.60(3), V = 1268.1(4) ?3, with Z = 2 for d calc = 1.533 Mg/m3. X-ray analysis reveals that both glycoluril derivatives bearing two free syn-urea NH groups and two ureidyl C=O, assemble the same one-dimensional chains in the solid-state running parallel to the [110], [1–10] and [010] directions via N–H···O hydrogen bonds. 相似文献11.
Noorjahan Begum Md. Iqbal Hyder G. M. Golzar Hossain Shariff E. Kabir Shafali R. Karmakar 《Journal of chemical crystallography》2005,35(10):799-807
Treatment of [Os3(CO)12] with indole in presence of a methanolic solution of Me3NO⋅2H2O at 60∘C afforded the previously reported compounds [(μ-H)Os3(CO)10(μ-OMe)] 2, [(μ-H)Os3(CO)10(μ-OH)] 3 and [Os3(CO)10(μ-OH)(μ-OMeCO)] 4 in 10, 5 and 20% yields, respectively. The reaction of [Os3(CO)10(MeCN)2] with indole at room temperature gave [(μ-H)Os3(CO)10(μ-1,2-η2-NC8H6)] 5 in 40% yield. Compounds 4 and 5 have been characterized by single crystal X-ray diffraction studies. Compound 4 crystallizes in the monoclinic space group P2(1)/c with a = 23.1239(3), b = 9.8087(4), c = 16.9017(6) ?, β = 92.6998(14)∘, Z = 8 and V = 3829.3(2) ?3 and 5 crystallizes in the monoclinic space group P2(1)/c with a = 9.009(3), b = 9.764(4), c = 24.906(6) ?, β = 93.452(14)∘, Z = 4 and V = 2186.9(13) ?3. Compound 4 consists of an open cluster of three osmium atoms with the hydroxy and methoxycarbonyl ligands bridging the open Os–Os edge.
Compound 5 consists of an isosceles triangle of osmium atoms with one elongated Os–Os edge which is bridged by the hydride and the indolyl
ligands. 相似文献
12.
Structure of 2-(1-phenylimidiazolidin-2-ylidene)- malononitrile and 2-(hexahydropyrimidinyl-2-ylidene)- malononitrile 总被引:1,自引:0,他引:1
Yin-Xiang Lu Hui Zhou Peng Guo Lan Jin Wei Xu 《Journal of chemical crystallography》2006,36(10):691-695
The crystal structure of 2-(1-phenylimidazolidin-2-ylidene)-malononitrile, I, and 2-(hexahydropyrimidin-2-ylidene)-malononitrile, II, were determined with crystal data (I: Monoclinic, P21/n, a=8.116(3) ?, b=7.650(3) ?, c=17.399(7) ?, β=93.065(6)°, R
all=0.0980; II: Monoclinic, P21/n, a=9.169(2) ?, b=8.103(2) ?, c=10.337(3) ?, β=99.853(4)°, R
all=0.0877). N−H···N hydrogen bonds were responsible for the formation of centrosymmetric dimers of I and one-dimensional zigzag molecular chains of II. 相似文献
13.
Maria G. Miranda Elizabeth J. Norton Rodney P. Feazell Kevin K. Klausmeyer Kevin G. Pinney 《Journal of chemical crystallography》2006,36(5):309-314
The title compounds, (Z)-1-[(2′,4′-dimethoxy-3′-nitro)-phenyl]-2-[(3″,4″,5″-trimethoxy)-phenyl]ethene, C19H21O7N (I), and 2-amino-4-methyl-6-(3,4,5-trimethoxy-phenyl)-pyrimidine, C14H17O3N3 (II), were obtained unexpectedly from a reaction involving (Z)-1-[(2′,3′-dinitro-4′-methoxy)-phenyl]-2-[(3″,4″,5″-trimethoxy)-phenyl]ethene (IV). The molecular structures of these compounds were obtained by single-crystal X-ray diffraction. Crystallization of I occurs in the centrosymmetric monoclinic space group P21/c (No. 14) with a=7.7311(5), b=19.9239(13), c=11.5725(8); and β=92.193(3) and Z=4. Crystallization of II occurs in the centrosymmetric monoclinic space group C2/c (No. 15) with a=21.296(2), b=6.8963(7), c=20.001(2); and β=114.121(6) and Z=8. Details of the synthesis and the structural characterization of the title compounds are presented and discussed. 相似文献
14.
Robert D. Pike Mi Jung Lim Ellen A. L. Willcox Tristan A. Tronic 《Journal of chemical crystallography》2006,36(11):781-791
The coordination chemistry of 2-aminopyrimidine (PymNH2) with nickel(II) and cobalt(II) nitrate and chloride is reported, including seven new X-ray crystal structures. Two [Ni(NO3)2(PymNH2)2(OH2)] isomers were found (A: C2/c, a=13.3006(5), b=7.9727(3), c=28.5453(11), β=101.758(2), V=2963.48(19), Z=8 and B·1/2 acetone: P21/c, a=7.66060(10), b=10.6792(2), c=20.6790(3), β=100.2970(10), 1664.48(5), Z=4). In both cases one nitrate is monodentate and the other is chelating and the PymNH2 ligands coordinate through ring nitrogen atoms. Hydrogen bonding results in double sheet structure for isomer A, and a three dimensional channeled network for isomer B. [Co(NO3)2(PymNH2)2(OH2)] (C2/c, a=13.3507(2), b=7.99520(10), c=28.6734(3), β=102.3540(10), V=2989.77(7), Z=8) is isostructural to Ni isomer A. [CoCl2(PymNH2)] (Cmcm, a=3.6139(2), b=14.3170(7), c=12.9986(7), V=672.55(6), Z=4) is a sheet coordination network, consisting of corner-sharing chains of Co2(μ-Cl)2 bridged by PymNH2 through ring nitrogen atoms; [CoCl2(PymNH2)2] (C2/c, a=11.2774(6), b=6.5947(4), c=16.5687(9), β=92.269(3), V=1231.27(12), Z=4) is a tetrahedral molecule knit into a ribbon structures through pairs of hydrogen bonds. Isostructural trans-[NiCl2(PymNH2)4] (C2/c, a=7.67760(10), b=18.7224(3), c=15.0418(2), β=99.6740(10), V=2131.41(5), Z=4) and trans-[CoCl2(PymNH2)4] (C2/c, a=7.69120(10), b=18.5957(2), c=15.1091(2), β=99.5280(10), V=2131.14(5), Z=4) are simple octahedral molecules, with hydrogen-bonding producing sheet structures. 相似文献
15.
L. B. Serezhkina E. V. Peresypkina A. V. Virovets M. O. Karasev 《Crystallography Reports》2010,55(1):19-23
Single crystals of the compound (NH4)3[UO2(CH3COO)3]2[UO2(CH3COO)(NCS)2(H2O)] (I) are synthesized, and their structure is investigated using X-ray diffraction. Compound I crystallizes in the monoclinic system with the unit cell parameters a = 18.3414(6) ?, b = 16.3858(7) ?, c = 12.4183(5) ?, β = 92.992(1)°, space group C2/c, Z = 4, V = 3727.1(3) ?3, and R = 0.0253. The uranium-containing structural units of crystals I are mononuclear complexes of two types with an island structure, i.e., the [UO2(CH3COO)3]− anionic complexes belonging to the crystal-chemical group (AB
301 = UO22+, B
01 = CH3COO−) of the uranyl complexes and the [UO2(CH3COO)(NCS)2(H2O)]− anionic complexes belonging to the crystal-chemical group AB
01M31 (A = UO22+, B
01 = CH3COO−, M
1 = NCS− or H2O). 相似文献
16.
Abstract
A pair of copper(II) complexes, [CuL1(ONO2)(OH2)] 1 and [CuBrL2N3] 2, where L1 is 5-methoxy-2-[(2-morpholin-4-ylethylimino)methyl]phenolate, and L2 is (2-morpholin-4-ylethyl)-(1-pyridin-2-ylethylidene)amine, have been synthesized and characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. Complex 1 crystallizes in the monoclinic space group P21/c, with a = 10.496(2), b = 19.113(3), c = 8.586(2) ?, β = 105.186(10)°. Complex 2 crystallizes in the monoclinic space group C2/c, with a = 16.606(3), b = 7.357(2), c = 26.043(5) ?, β = 94.996(2)°. The Cu atom in each complex is five-coordinate in a square pyramidal geometry. 相似文献17.
L. G. Kuzmina A. V. Churakov K. I. Grandberg J. A. K. Howard 《Journal of chemical crystallography》2005,35(8):635-640
The structure of the auration product of N-(5-methoxybenzene)-2,4,6-trinitroaniline is determined. The compound of composition C67H54Au3N4O8P3 (3) crystallizes in triclinic space group P
with a = 13.8280(4), b = 14.7641(4), c = 17.4531(5) Å, α = 111.550(1), β = 102.779(1), γ = 103.040(1)∘, Z = 2. The compound represents a salt tris(triphenylphosphinegold) oxonium N-(4-methoxyphenyl)-2,4,6-trinitroanilinate, with a hexanuclear dimeric structure of the cation and a para-quinoid form of the anion that is responsible for the dark-red color of the compound. 相似文献
18.
The tetrabutylammonium salt of mononiobotungstate [(n-C4H9)4N]3NbW5O19 (1) and the tetrabutylammonium salt of monovanadotungstate [(n-C4H9)4N]3VW5O19 (2) are isotypes; both crystallize in the monoclinic system, space group C2/c (N° 15) with Z=8. The cell parameters for 1 are a=30.4038(8) ?, b=18.5948(8) ?, c=27.3330(3) ?, β=112.4555(6)°, V=14281.1(7) ?3 and the final reliability factors are R=0.043 and R
w=0.047 for 5801 reflections. The cell parameters for 2 are a=30.096(8) ?, b=18.373(3) ?, c= 27.201(6) ?, β=112.402(14)°, V=13906(5) ?3 and the final reliability factors are R=0.048 and R
w=0.054 for 6122 reflections. Both anions, [NbW5O19]
3− and [VW5O19]
3− exhibit the Lindqvist structure of the parent hexatungstate anion. The six metal positions are disordered and for each metal
site the occupation factor is close to 1/6 M (M=Nb, V) and 5/6 W. Furthermore the two compounds were characterized by IR in
the solid state, and 183W solution NMR. The 183W spectrum of [NbW5O19]
3− presents two resonances with relative intensities 4:1 in agreement with the C4v symmetry of the anion. 相似文献
19.
L. F. Kirpichnikova A. Pietraszko W. Bednarski S. Waplak A. U. Sheleg 《Crystallography Reports》2004,49(1):86-93
Crystals grown from a solution of dimethylammonium and copper chlorides are studied using electron paramagnetic resonance
(EPR) and X-ray diffraction. The dielectric properties of the crystals grown are measured. It is established that the crystals
have the composition [(CH3)2NH2]2CuCl4[(CH3)2NH2]Cl and, in phase I at room temperature, are described by the orthorhombic space group Pna21 with the unit cell parameters a = 11.338 Å, b = 9.981 Å, and c = 15.675 Å. At temperatures of 279 K and 253 K, the crystals undergo jumpwise phase transitions into the incommensurate modulated
ferroelectric phase II and commensurate modulated phase III, respectively.
__________
Translated from Kristallografiya, Vol. 49, No. 1, 2004, pp. 92–100.
Original Russian Text Copyright ? 2004 by Kirpichnikova, Pietraszko, Bednarski, Waplak, Sheleg.
Dedicated to the 80th Birthday of L.A. Shuvalov 相似文献
20.
Peter C. Kunz Wilhelm Huber Bernhard Spingler 《Journal of chemical crystallography》2011,41(2):105-110