共查询到20条相似文献,搜索用时 15 毫秒
1.
Ricardo Baggio Juan Carlos Muoz Mireille Perec 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(10):m498-m500
The title compound, [Dy2(C2H3O2)6(H2O)4]·4H2O, crystallizes in the form of dimeric units related by an inversion centre. Each cation is nine‐coordinate, binding to two water molecules and three acetate groups, two of which are bidentate and the third tridentate. This last acetate group acts as a bridge between neighbouring metal atoms, leading to an intradimer Dy?Dy separation of 4.170 (1) Å. 相似文献
2.
Jian‐Rong Su Duan‐Jun Xu 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):m256-m258
In the title polymeric complex, [Mn(C7H5O3)2(C12H8N2)]n, the MnII atom is located on a twofold axis and displays a distorted octahedral coordination geometry, formed by four salicylate anions and one 1,10‐phenanthroline (phen) molecule. The salicylate anions doubly bridge the MnII atoms to form one‐dimensional polymeric chains. A comparison of Mn—O bond distances with the corresponding Mn—O—C angles suggests a significant electrostatic content in the Mn—O bonds. A face‐to‐face distance of 3.352 (7) Å between neighbouring parallel phen planes indicates π–π stacking interactions between polymeric chains. 相似文献
3.
Shan Gao Ji‐Wei Liu Li‐Hua Huo Zhi‐Zhong Sun Jin‐Sheng Gao Seik Weng Ng 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(8):m363-m365
In the title neutral coordination polymer, [Cd(C6H3ClNO2)2(H2O)2]n, each CdII ion is coordinated by one N and four O atoms from three 2‐chloronicotinate ligands and by two aqua ligands, defining a distorted monocapped octahedral coordination geometry. Adjacent Cd atoms are linked by the pyridyl N atom and the bidentate carboxylate functional group of a 2‐chloronicotinate ligand, forming a one‐dimensional infinite chain along the b axis. The Cd⋯Cd distance is 8.112 (3) Å. These chains are linked by O—H⋯O and O—H⋯N hydrogen bonds into a three‐dimensional network structure. 相似文献
4.
Mao‐Lin Hu Xiao‐Qing Cai Jiu‐Xi Chen 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(9):m403-m405
In the polymeric title compound, [CuCl2(C6H6N4)]n, each CuII ion is five‐coordinated by four basal atoms (two N atoms from a 2,2′‐biimidazole molecule and two Cl− anions) and one axial Cl− anion, in a distorted square‐pyramidal coordination geometry. Cl− anions bridge the {Cu(C6H6N4)Cl} units into one‐dimensional linear chains, which are reinforced by π–π interactions. Adjacent linear chains are linked by N—H⋯Cl hydrogen bonds, resulting in a grid layer. The hydrogen‐bonding pattern can be described in graph‐set notation as C(9)R(9)R(14). This study extends our knowledge of the multifunctional properties of the 2,2′‐biimidazole ligand and of the coordination stereochemistry of copper(II). 相似文献
5.
Andrew W. G. Platt Anthony M. J. Lees 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(10):m433-m435
The structure of the title complex, [Cu(NO3)2(C27H26O2P2)]n, consists of polymeric chains formed by propane‐1,3‐diylbis(diphenylphosphine oxide) ligands bridging between metal centres. The Cu atom lies on a twofold rotation axis and a further symmetry centre bisects the bridging bisphosphine dioxide ligand. The CuO6 coordination geometry is a distorted octahedron, with the bidentate chelating nitrate groups adopting a cis configuration. 相似文献
6.
Yan Yang Ming‐Hua Zeng Fa‐Yan Meng Hong Liang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(9):m392-m394
In the title compound, [Cd(C9H6O5)(C10H8N2)(H2O)]n, the CdII atom is coordinated in a distorted octahedral fashion by two carboxylate groups (one in a monodentate and one in a bidentate fashion) from two 4‐carboxylatophenoxyacetate anions, two N atoms from a 2,2′‐bipyridine ligand and one aqua ligand. The structure is a helix with a long pitch of 16.441 (5) Å. A three‐dimensional supramolecular network is further constructed through π–π stacking and hydrogen‐bonding interactions between the helices. 相似文献
7.
Peng‐Bin Pan Lei Zhang Zhao‐Ji Li Xin‐Yi Cao Yuan‐Gen Yao 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(6):m270-m272
The title compound, [Zn(C14H8O6S)(H2O)2]n, is the first reported metal complex of the 4,4′‐sulfonyldibenzoate anion. The structure comprises zigzag chains of alternating [Zn(H2O)2]2+ and sulfonyldibenzoate units, the central Zn and S atoms of which lie on crystallographic twofold axes. The ZnII centre occupies a strongly distorted tetrahedral environment [O—Zn—O = 83.30 (7)–136.19 (8)°], coordinated by the two water O atoms [Zn—O = 1.986 (2) Å] and one O atom from each of two carboxylate groups [Zn—O = 1.9942 (19) Å], with much longer contacts to the other O atoms of these carboxylates [Zn—O = 2.528 (2) Å]. Hydrogen bonds between carboxylate O atoms and coordinated water molecules in adjacent chains lead to the formation of a three‐dimensional network structure. 相似文献
8.
Ming‐Lin Guo Chen‐Hu Guo 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(8):m352-m354
The title complex, {[Zn(C8H3NO6)(H2O)3]·H2O}n, has a one‐dimensional chain structure. The two carboxylate groups of the dianionic 2‐nitroterephthalate ligand adopt mono‐ and bidentate chelating modes. The Zn atom shows distorted octahedral coordination, bonded to three O atoms from two carboxylate groups and three O atoms of three non‐equivalent coordinated water molecules. The one‐dimensional chains are aggregated into two‐dimensional layers through inter‐chain hydrogen bonding. The whole three‐dimensional structure is further stabilized by inter‐layer hydrogen bonds. 相似文献
9.
Jian Zhang Zhao‐Ji Li Yi‐Hang Wen Yao Kang Ye‐Yan Qin Yuan‐Gen Yao 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(8):m389-m391
The title compound, [Cd(C6H4NO2)2(H2O)2]n, forms a one‐dimensional chain structure based on a Cd atom with approximate pentagonal bipyramidal coordination geometry and two nicotinate ligands in different coordination modes. One acts as a tridentate ligand, chelating one Cd atom through the carboxylate group while simultaneously binding to a second symmetry‐related Cd atom through the pyridine N atom; the other acts only as a bidentate ligand through its carboxylate group. Hydrogen bonds utilizing the coordinated water molecules, uncoordinated nitrogen and carboxylate O atoms as acceptors link the chains. 相似文献
10.
G. Prochniak V. Videnova‐Adrabinska 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(2):m103-m106
This study presents the coordination modes and two‐dimensional network of a novel strontium(II) coordination polymer, [Sr(C7H5O5S)2(H2O)3]n. The eight‐coordinate Sr2+ ion is in a distorted bis‐disphenoidal coordination environment, surrounded by four sulfonate and one carboxyl O atom from five benzenesulfonate ligands, two of which are symmetry unique, and by three O atoms from three independent aqua ligands. The compound exhibits a monolayer structure with coordination bonds within and hydrogen bonds between the layers. The μ4 acid ligand bridges the metal ions in two dimensions to form a thick undulating monolayer with a hydrophobic interior and hydrophilic surfaces. A second independent monoanion is arranged outward from both sides of the monolayer and serves to link adjacent monolayers via carboxyl–water and water–carboxyl hydrogen bonds. 相似文献
11.
Andrej Pevec Alojz Demar Katsuyuki Aoki Iztok Turel 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(11):m545-m547
In the structure of the title compound, {[Rh2(C2H3O2)4(C7H18N2O)]·0.5C4H8O}n or {[Rh2(O2CMe)4(Hbdmap)]·0.5C4H8O}n, where Hbdmap is 1,3‐bis(dimethylamino)propan‐2‐ol, each Hbdmap ligand is coordinated to two [Rh2(O2CMe)4] units by two N atoms, resulting in a polymeric chain structure. The observed coordination mode of the Hbdmap molecule is unprecedented. 相似文献
12.
Cheng‐Bing Ma Ming‐Qiang Hu Chun‐Xia Zhang Feng Chen Chang‐Neng Chen Qiu‐Tian Liu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(6):m288-m290
The title complex, [Mn(C8H4O4)(C10H8N2)(H2O)]n, takes the form of a zigzag chain, with the terephthalate dianion (tp) acting as a tridentate ligand. The MnII center is surrounded by two tp ligands, one water molecule and one 2,2′‐bipyridine (bipy) ligand and exhibits a severely distorted octahedral coordination environment, with cis angles ranging from 57.31 (8) to 123.97 (11)°. The complete solid‐state structure can be described as a three‐dimensional supramolecular framework stabilized by hydrogen‐bonding interactions involving the coordinated water molecule and the carboxy O atoms of the tp ligands, and by π–π stacking interactions involving the bipy rings and the benzene ring of the tp ligand. 相似文献
13.
Mao‐Lin Hu Hong‐Ping Xiao Shun Wang Xin‐Hua Li 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(11):m454-m455
In the title compound, [Cu(C10H4O8)(C12H8N2)]n, the CuII cation has a four‐coordination environment completed by two N atoms from one 1,10‐phenanthroline (phen) ligand and two O atoms belonging to two dihydrogen benzene‐1,2,4,5‐tetracarboxylate anions (H2TCB2−). There is a twofold axis passing through the CuII cation and the centre of the phen ligand. The [Cu(phen)]2+ moieties are bridged by H2TCB2− anions to form an infinite one‐dimensional coordination polymer with a zigzag chain structure along the c axis. A double‐chain structure is formed by hydrogen bonds between adjacent zigzag chains. Furthermore, there are π–π stacking interactions between the phen ligands, with an average distance of 3.64 Å, resulting in a two‐dimensional network structure. 相似文献
14.
Birinchi K. Das Rama K. Barman 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(9):1025-1026
The title compound, [Cu2(C2H3O2)4(C6H4N2)2], has the familiar lantern‐type structure that is characteristic of dimetal tetracarboxylates of copper and several other transition elements. The molecule lies about an inversion centre and the Cu atom is present in a distorted square‐pyramidal coordination environment, consisting of four O atoms in equatorial positions and the pyridyl‐N atoms of the two 4‐cyanopyridine ligands in axial positions. 相似文献
15.
Martin Lutz Antoine M. M. Schreurs Anthony L. Spek Marcel A. H. Moelands Robertus J. M. Klein Gebbink 《Acta Crystallographica. Section C, Structural Chemistry》2010,66(1):m9-m12
The title compound, [Mn(CF3SO3)2(CH3CN)2]n, has an MnII cation on an inversion centre in an octahedral environment. The trifluoromethanesulfonate anions act as bridging ligands and form a one‐dimensional coordination polymer in the direction of the a axis. The F atoms of the trifluoromethanesulfonate anions form layers parallel to the ab plane, but despite short intermolecular distances, no stabilizing F...F interactions are detected. The Mn—N and C—C bonds of the acetonitrile ligand are analyzed according to the Hirshfeld rigid‐bond test. Renninger effects in the reflection data are considered, explored and discussed. 相似文献
16.
Jian‐Hai Luo Chang‐Cang Huang Xi‐He Huang Jin‐Gen Wang 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(3):m121-m122
The title compound, [Cu2Fe3(C5H5)3(C2H3O2)(C6H4O2)3(C3H7NO)2], belongs to the classic dimeric paddle‐wheel structure type. It is an unusual example in that it contains two different carboxylate groups, viz. ferrocenecarboxylate and acetate. With three ferrocenecarboxylate groups and only one acetate group bridging the two Cu centres, a noncentrosymmetric molecular arrangement results. 相似文献
17.
Hong Li Kai‐Liang Yin Duan‐Jun Xu 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(1):m19-m21
The title compound, [Cu(C7H5O3)2(C7H6N2)2]n, is a one‐dimensional polymeric complex bridged by salicylate anions. The CuII atom is surrounded by three salicylate and two benzimidazole ligands, with a tetragonally elongated octahedral coordination geometry. The Cu—O bond distances in the axial directions are 2.6092 (16) and 2.6834 (17) Å. π–π stacking interactions exist between the benzimidazole rings of neighboring polymeric complex chains. 相似文献
18.
Huan‐Yu Wang Li‐Hua Huo Shan Gao Jing‐Gui Zhao 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(2):m65-m67
In the title complex, {[Mn(C4O4)(C10H8N2)(H2O)]·H2O}n, each MnII ion has a distorted octahedral coordination formed by two N atoms of a 2,2′‐bipyridine ligand, three carboxyl O atoms of three different acetylenedicarboxylate ligands and one coordinated water molecule. The acetylenedicarboxylate ligands act in a tridentate mode connecting adjacent MnII ions and constructing a two‐dimensional structure which can be regarded as an unusual plywood‐like stacked network. 相似文献
19.
Ana María Atria Maria Teresa Garland Ricardo Baggio 《Acta Crystallographica. Section C, Structural Chemistry》2012,68(3):m53-m56
The asymmetric unit of the title compound, {[La(C4H5O2)3(H2O)2]·C5H5N5·H2O}n, consists of an LaIII cation, three crotonate (but‐2‐enoate) anions and two coordinated water molecules forming the neutral complex, completed by an external adenine molecule and one hydration water molecule. The LaO10 coordination polyhedra, connected through the sharing of a single edge, form isolated chains running along the [100] direction. These one‐dimensional structures are characterized by two different centrosymmetric La2O2 loops, with La...La distances of 4.5394 (6) and 4.5036 (6) Å. The unbound adenine and water solvent molecules form a highly planar hydrogen‐bonded array parallel to (110) (r.m.s. deviation from the mean plane < 0.10 Å) which intersects the isolated La–crotonate chains in a slanted fashion to form an extremely connected hydrogen‐bonded three‐dimensional structure. 相似文献
20.
Sizwe J. Zamisa Patrick Ndungu Bernard Omondi 《Acta Crystallographica. Section C, Structural Chemistry》2013,69(10):1100-1103
The reaction of 4,4′‐bipyridine with copper acetate in the presence of 4‐nitrophenol led to the formation of the title compound, {[Cu(CH3COO)2(C10H8N2)]·C6H5NO3·2H2O}n. The complex forms a double‐stranded ladder‐like coordination polymer extending along the b axis. The double‐stranded polymers are separated by 4‐nitrophenol and water solvent molecules. The two CuII centres of the centrosymmetric Cu2O2 ladder rungs have square‐pyramidal coordination environments, which are formed by two acetate O atoms and two 4,4′‐bipyridine N atoms in the basal plane and another acetate O atom at the apex. The ladder‐like double strands are separated from each other by one unit‐cell length along the c axis, and are connected by the water and 4‐nitrophenol molecules through a series of O—H...O and C—H...O hydrogen‐bonding interactions and two unique intermolecular π–π interactions. 相似文献