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Abstract The Ni(II) complex, [Ni(H2biim)2(PABA)2]Cl2·2H2O, H2biim being 2,2′-biimidazole, PABA being 4-aminobenzoic acid has been synthesized and the crystal structure determined using
X-ray crystallography. The complex crystallizes in triclinic system, space group P − 1 with unit cell parameters a = 8.3920(9) ?, b = 9.8436(11) ?, c = 9.8874(11) ?, α = 94.862(2)°, β = 109.142(2)°, γ = 90.992(2)°, V = 767.95(15) ?3 and Z = 1. The molecules of the complex in the crystal assemble by way of N–H⋯Cl, O–H⋯Cl, O–H⋯O hydrogen bonds as well as π–π stacking
interactions to provide a two-dimensional supramolecular structure.
Index Abstract Synthesis and Crystal Structure of Nickel(II) Complex with 2,2′-Biimidazole and 4-Aminobenzoic Acid
Yanping Li and Pin Yang*
The molecules of the title complex [Ni(H2biim)2(PABA)2]Cl2·2H2O in the crystal assemble by way of N–H⋯Cl, O–H⋯Cl, O–H⋯O hydrogen bonds as well as π–π stacking interactions to provide a
two-dimensional supramolecular structure.
相似文献
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Li-Jun Li Chuan-Chuan Liu Ming-Zhen Sun Yu Qiao Ying-Ying Huang Jian-Long Du 《Molecular Crystals and Liquid Crystals》2014,593(1):187-200
Two new complexes {[Pb(L1)(DMSO)2(H2O)]·DMF}n (1, L1 = 2,2′-dihydroxy-l,l′-dinaphthyl-3,3′-dicarboxylate) and {[Pb(L2)(DMS O)·DMSO}n (2, L2 = 2,2′-dimethoxy-l,l′-dinaphthyl-3,3′-dicarboxylate) have been synthesized under mild conditions and structurally characterized. Crystal structural analysis reveals that complex 1 adopts a 1D infinite chain structure which forms 2D sheet by hydrogen bonds interactions. Complex 2 possesses a 2D sheet structure, which was further assembled into a 3D supramolecular network through the π-π weak interactions. IR spectra indicates the carboxyl group coordinates with the Pb2+ ion. TGA shows that complex 2 is highly thermally stable up to 120°C. 相似文献
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Jian-Ping Zou Mei-Hong Chen Long-Zhu Zhang Qiu-Ju Xing Zhi-Qiang Xiong 《Journal of chemical crystallography》2011,41(12):1820-1833
Abstract
The title complexes, (C10H8N2)·[Y(C7H3NO5)(C7H4NO5)·2H2O]·3H2O (1), (C10H8N2)·[Er(C7H3NO5)(C7H4NO5)·2H2O]·3H2O (2), (C10H8N2)·[La(C7H3NO5)(C7H4NO5)·2H2O]·4.5H2O (3), (C10H8N2)·[Sm(C7H3NO5)(C7H4NO5)·2H2O]·4.75H2O (4), (C10H8N2)·[Pr(C7H3NO5)(C7H4NO5)·2H2O]·4.75H2O (5) were synthesized and characterized by X-ray single-crystal diffraction. The crystal structures of 1–2 reveal that they are isomorphous, among which the metal atoms are all eight-coordinate with a distorted dodecahedron coordination geometry. The structures of 3–5 are isomorphic, among which the metal atoms are all nine-coordinate with distorted tricapped trigonal prismatic coordination geometries by two chelidamic acid ligands. Complexes 1–5 are formed into 3D networks by H-bonds. The optical properties of 1–5 were investigated in terms of fluorescent spectra, which all exhibit strong luminescence. 相似文献7.
Xiao-Ming Chen Xiao-Ying Huang Yong-Jin Xu Yong-Jia Zhu 《Journal of chemical crystallography》1995,25(9):605-607
A new monomeric manganese(II) nitrate complex with 2,2-bipyridine (bpy), [Mn(bpy)2(NO3)(H2O)](NO3)·H2O, has been prepared and characterized by X-ray crystallography. The complex crystallizes in the triclinic space group
witha=9.721(3),b=14.691(5),c=8.578(3) Å, =106.79(3), =96.05(3), =82.55(3)°,V=1159.9 Å3 andZ=2. The structure comprises discrete cation [Mn(bpy)2(NO3)(H2O)]+ in which the metal atom is coordinated by a pair of bidentate bpy ligands [Mn–N=2.261(4)–2.299(4) Å], a unidentate nitrato [Mn–O=2.284(4) Å] and aqua [Mn–O=2.160(3) Å] ligands in a highly distorted octahedral arrangement. 相似文献
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Fernando Hung-Low Amanda Renz Kevin K. Klausmeyer 《Journal of chemical crystallography》2011,41(8):1174-1179
Abstract
The reaction of AgBF4 with 5,5′-dimethy-2,2′-bipyridine and 2,2′-bipyridine yields three previously unreported compounds. The molecular structures of these compounds were obtained by single-crystal X-ray diffraction. Crystallization of 1 occurs in the centrosymmetric triclinic space group P-1 (No. 2) with a = 13.0069(6), b = 13.5903(6), c = 13.9489(6); and α = 95.677(2), β = 98.995(2), γ = 101.716(2) and Z = 6. Crystallization of 2 occurs in the centrosymmetric monoclinic space group C2/c (No. 15) with a = 23.413(3), b = 11.2116(13), c = 13.0653(13) and β = 123.074(3), and Z = 4. Crystallization of 3 occurs in the centrosymmetric triclinic space group P-1 (No. 2) with a = 12.6843(12), b = 12.8834(13), c = 12.9887(13), and α = 96.172(5), β = 95.149(5), γ = 98.051(6) and Z = 2. Details of the synthesis and the structural characterization of the title compounds are presented and discussed. 相似文献10.
Hsinhsi Lai Daniel S. Jones Donna C. Schwind D. Paul Rillema 《Journal of chemical crystallography》1990,20(4):321-325
The X-ray structure determination of the complex tris(2,2-bipyrazine)ruthenium(II) hexafluorophosphate, [Ru(C8N4H6)3](PF6)2, has shown that the compound crystallizes in the monoclinic space group P21/c witha=13.459(5),b=23.486(8),c=17.913(10) Å,=139.85(1)°, andZ=4. Each asymmetric unit also contains one dimethylformamide and one water molecule. Least-squares refinement led to an R factor of 0.074 based on 3463 reflections for which I>2(I). The [Ru(C8N4H6)3]2+ cation has no crystallographic symmetry, but the requirements for point symmetry 32 are nearly met. The six Ru-N bond lengths agree within experimental error and have an average length of 2.05(1) Å. 相似文献
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Fernando Hung-Low Amanda Renz Kevin K. Klausmeyer 《Journal of chemical crystallography》2009,39(6):438-444
Abstract The reaction of AgBF4 with 4,4′-dimethyl-2,2′-bipyridine and 2,2′-bipyridine yields three previously unreported compounds. The molecular structures
of these compounds were obtained by single-crystal X-ray diffraction. Crystallization of 1 occurs in the centrosymmetric monoclinic space group C2/c (No. 15) with a = 23.407(3), b = 10.7552(13), c = 13.9332(17); and β = 111.893(2) and Z = 8. Crystallization of 2 occurs in the centrosymmetric orthorhombic space group Pbca (No. 61) with a = 11.178(3), b = 23.590(6), c = 29.339(8) and Z = 8. Crystallization of 3 occurs in the centrosymmetric monoclinic space group P21/c (No. 14) with a = 11.2250(6), b = 8.7713(5), c = 15.4048(8), and β = 109.333(2) and Z = 4. Details of the synthesis and the structural characterization of the title compounds are presented and discussed.
Index Abstract The organic ligands 4,4′-dimethyl-2,2′-bipyridine and 2,2′-bipyridine, were used to synthesize three new complexes with AgBF4, whose structures are dependent on the type of solvent used in the reaction as well as solvent of crystallization.
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Itka Bkouche-Waksman A. Kvick Marie Laure Boillot Olivier Kahn 《Journal of chemical crystallography》1991,21(5):595-600
The title compound has been synthesized and its crystal structure has been solved at room temperature. It crystallizes in the triclinic system, space groupP, witha=7.853(1) Å,b=10.177(1) Å,c=13.651(4) Å,=74.57(1)°,=88.49(1)°, =80.675(4)°, andZ=2. The structure consists of isolated [Cu(bipy)2N3]+ cations (bipy=2,2-bipyridine) and perchlorate anions. The metallic cation environment has a distorted trigonal-bipyramidal geometry. The EPR spectrum is rhombic, which indicates that the distortion with respect to the perfect trigonal bipyramid is sufficiently pronounced to mixz
2- andx
2–y
2-type orbitals in the ground state. The temperature dependence of the molar magnetic susceptibility has been investigated in the 300-2.2 K temperature range. 相似文献
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Yu-Luan Wu Xiao-Lan Yu Xiao-Ming Chen Xiao-Ying Huang 《Journal of chemical crystallography》1995,25(12):875-878
A new monomeric copper(II) complex with 2,2-bipyridine (bpy) and betaine (bet), [Cu(byy)(bet)2(H2O)](ClO4)2 · H2O, has been prepared and characterized by X-ray crystallography. The complex crystallizes in the triclinic space groupP-1 witha=8.859(2),b=11.191(2),c=14.850(3) Å, =91.41(1), =97.19(1), =91.97(1)°,V=1459.2(7) Å3, andZ=2. The structure comprises discrete cations [Cu(bpy)(bet)2(H2O)]2+ in which the metal atom is coordinated in a distorted square-pyramidal environment by two oxygen atoms from a pair of monodentate carboxylato ligands [Cu–O=1.950(2) Å] and two nitrogen atoms of a bidentate bpy ligand [Cu–N=1.997(3)–2.005(3) Å] on the basal plane, and one aqua [Cu–O=2.267(3) Å] ligand at the apical position. 相似文献
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Xun Feng Cheng-Zhi Xie Li-Ya Wang Yu-Fang Wang Lu-Fang Ma 《Journal of chemical crystallography》2008,38(8):619-624
Abstract A new ternary mixed-ligand complex [Cu2(sal-glu)2(bipy)(H2O)2] · (H2O) (bipy = 4,4′-bipyridine and sal-glu = salicylaldehyde l-glutamic Schiff base) has been synthesized and characterized by X-ray diffraction. It crystallizes in the triclinic system,
space group P-1 with a = 9.6199(13) ?, b = 9.9111(13) ?, c = 9.9167(13) ?. The amino acid Schiff base coordinates to the Cu(II) ion in a tridentate mode including phenol-hydroxyl oxygen,
carboxyl oxygen and amide nitrogen atom, while the bipy coordinates in bidentate bridging mode linking two Cu(II) ions. The
[Cu2(sal-glu)2(bipy)(H2O)2] units are linked into 1-D chain structure and the bipy molecules are interspersed into parallel sheets via intermolecular
hydrogen bonds. The carboxyl oxygen atoms, phenolic oxygen atoms and water oxygen atoms are involved in the extensive intermolecular
hydrogen bond network between the water molecules and phenol-hydroxyl oxygen atoms from salicylaldehyde derived ligand.
Graphical Abstract A new ternary mixed-ligand complex [Cu2(sal-glu)2(bipy)(H2O)2]·(H2O) (bipy = 4, 4′-bipyridine and sal-glu = salicylaldehyde l-glutamic Schiff base) crystallizes in the triclinic system, space group P-1 with a = 9.6199(13) ?, b = 9.9111(13) ?, c = 9.9167(13) ?. The amino acid Schiff base coordinates to the Cu(II) ion in a tridentate mode including phenol-hydroxyl oxygen,
carboxyl oxygen and amide nitrogen atom, while the bipy coordinates in bidentate bridging mode linking two Cu(II) ions. The
[Cu2(sal-glu)2(bipy)(H2O)2] units are linked into 1-D chain structure and the bipy molecules are interspersed into parallel sheets via intermolecular
hydrogen bonds. The carboxyl oxygen atoms, phenolic oxygen atoms and water oxygen atoms are involved in the extensive intermolecular
hydrogen bond network between the water molecules and phenol-hydroxyl oxygen atoms from salicylaldehyde derived ligand.
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Abstract
The reaction of the organic ligand, 4-quinolineacarboxylate (L) with Pr(ClO4)3·6H2O and Dy(ClO4)3·6H2O, leads to the formation of two novel complexes [Pr2(L)6(H2O)4]2H2O 1 and [Dy2(L)6(H2O)4]2H2O 2, which have been characterized by elemental analysis, IR and single-crystal X-ray diffraction analysis (monoclinic system, space group P2(1)/n, with a = 11.805(2), b = 16.645(3), c = 15.367(3) ?, β = 106.78(3)°, V = 2891.1(10) ?3, Z = 4 for 1, monoclinic system, space group P2(1)/n, with a = 11.629(2), b = 16.478(3), c = 5.336(3) ?, β = 105.83°, V = 2827.4(10) ?3, Z = 4). The two isostructure complexes are binuclear and possess an inversion center which is at the midpoint of the linkage of two symmetrical La(III) centers. In two complexes, each metal center adopts nine-coordinated mode coordinated by nine O atoms from two H2O molecules and three carboxyls of three ligands, and L displays three different coordination modes. Hydrogen bonds join the binuclear complexes into 3D networks. 相似文献17.
Mohamed Osman Awaleh Antonella Badia François Brisse 《Journal of chemical crystallography》2009,39(2):122-127
Abstract Two new silver(I)–dithioether coordination polymers based on the self-assembly of the dithioether ligands L
n
−R
= CH3–S(CH2)
n
S–CH3 (n = 1, 3) and AgX silver salts, where X = ClO4
− (1) and PF6
− (2), have been synthesized and characterized by single crystal X-ray diffraction and TGA. The crystallographic data of those
complexes are: (1) Monoclinic P21/c; a = 16.5861(3) ?; b = 10.1048(2) ?; c = 15.7843(3) ?; β = 112.570(1)°; V = 2442.83(8) ?3; Z = 4. (2) Monoclinic P21/n; a = 8.6500(2) ?; b = 9.4053(2) ?; c = 24.0357(6) ?; β = 92.750(2)°; V = 1953.19(8) ?3; Z = 4. In both complexes, the dithioether building blocks propagated the silver(I) centers to build cationic lamellar coordination
polymers, while ClO4
− and PF6
−, which were sandwiched between silver-ligand sheets, counterbalance only the charge of the networks. The thermogravimetric
investigation reveals that those complexes decompose in a single step respectively to metallic silver and silver salt.
Index Abstract Two new silver(I)–dithioether coordination polymers, obtained from the self-assembly of dithioether ligands and AgX salts
with noncoordinating counteranions (X = ClO4
− and PF6
−), were characterized by X-ray crystallography and thermogravimetric analysis (TGA). 相似文献
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M. Gnanadeepam S. Selvaraj Antoine M.M. Schreurs Jan Kroon Thomas Steiner S. Perumal 《Journal of chemical crystallography》2001,31(2):87-92
The X-ray crystal structures of 2,2-thio- and 2,2-sulfonylbis(1,3-diarylprop-2-en-1-ones) are determined [1: 2,2-thiobis(3-(p-chlorophenyl)-1-phenylprop-2-en-1-one), C30H20Cl2O2S, space group C2/c, a = 14.275(3), b = 6.280(1), c = 26.533(5) Å, = 94.55(3)°, Z = 1/2; 2: 2,2-sulfonylbis(1,3-diphenylprop-2-en-1-one), C30H22O4S, space group P
, a = 9.652(1), b = 12.044(1), c = 12.182(1) Å, = 61.985(6), = 77.511(5), = 74.340(6)°, Z = 1; 3: 2,2-sulfonylbis(3-(p-chlorophenyl)-1-phenylprop-2-en-1-one), C30H20Cl2O4S, space group P
, a = 8.294(1), b = 13.175(2), c = 13.470(1) Å, = 62.870(9), = 83.796(7), = 85.282(8)°, Z = 1]. The C=C double bonds are all clearly defined. The sulfide 1 crystallizes on a crystallographic twofold axis, leading to a symmetric molecular conformation. The sulfones 2 and 3 crystallize on general positions, with different and irregular conformations. 相似文献
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Yu. M. Chumakov L. G. Paladi B. Ya. Antosyak Yu. A. Simonov V. I. Tsapkov G. Bocelli A. P. Gulea D. Ginju S. A. Palomares-Sanchez 《Crystallography Reports》2011,56(2):260-264
Nitrato-(2-hydroxy-5-nitrobenzaldehydo)(2,2′-bipyridyl)copper (I) and nitrato-(2-hydroxybenzaldehydo)(2,2′-bipyridyl)copper (II) were synthesized and characterized by X-ray diffraction. The coordination polyhedron of the central copper atom in complex
I can be described as a distorted tetragonal pyramid whose base is formed by the phenol and carbonyl oxygen atoms of the monodeprotonated
2-hydroxy-5nitrobenzaldehyde molecule and the nitrogen atoms of the 2,2′-bipyridyl ligand and whose apex is occupied by the
oxygen atom of the nitrato group. In the crystal structure, complexes I are linked by the acido ligands and the NO2 groups of the aldehyde molecule into infinite chains. In complex II, the central copper atom is coordinated by 2-hydroxybenzaldehyde, 2,2′-bipyridyl, and the nitrato group, resulting in the
formation of centrosymmetric dimers. The coordination polyhedron of the central copper atom can be described as a bipyramid
(4 + 1 + 1) with the same base as in complex I. The axial vertices of the bipyramid are occupied by the oxygen atom of the nitrato group and the bridging phenol oxygen
atom of the adjacent complex related to the initial complex by a center of symmetry. In the crystal structure, complexes II are hydrogen bonded into infinite chains. 相似文献