共查询到20条相似文献,搜索用时 15 毫秒
1.
Eun‐Ju Kim Chong‐Hyeak Kim Sock‐Sung Yun 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(9):m427-m429
The title complex, [Li2(C6H3N2O5)2(H2O)4], contains two kinds of Li atoms, viz. five‐coordinated and four‐coordinated. The five‐coordinated Li ion has a tetragonal–pyramidal geometry, with a water molecule in the apical position and four O atoms from two 2,4‐dinitrophenolate (2,4‐DNP) ligands in the basal plane. The four‐coordinated Li ion has a tetrahedral geometry, with three water molecules and one phenolate O atom of a 2,4‐DNP ligand. The Li ions are bridged by a phenolate O atom, giving the complex a dinuclear structure. The crystal packing is stabilized by O—H...O hydrogen‐bonding interactions involving the water molecules and nitro O atoms. 相似文献
2.
Thidarat Chotkhun Sujittra Youngme Narongsak Chaichit 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(2):m59-m61
In the title dinuclear acetate‐bridged complex, [Cu2(C2H3O2)3(NCS)(C10H9N3)2], the two Cu atoms are five‐coordinated, with a basal plane consisting of two N atoms of a di‐2‐pyridylamine (dpyam) ligand and two O atoms of two different acetate ligands. The axial positions of these Cu atoms are coordinated to N and O atoms from thiocyanate and acetate molecules, respectively, leading to a distorted square‐pyramidal geometry with τ values of 0.30 and 0.22. Both CuII ions are linked by an acetate group in the equatorial–equatorial positions and have syn–anti bridging configurations. Hydrogen‐bond interactions between the amine H atom and the coordinated and uncoordinated O atoms of the acetate anions generate an infinite one‐dimensional chain. 相似文献
3.
Jan Moncol Jaroslava Maroszova Milan Melník Marian Koman 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(3):m114-m116
The title compound, [Cu3(C3H5O2)6(C6H7NO)4]n, is composed of polymeric chains formed by alternating centrosymmetric Cu2(μ‐CH3CH2CO2)4 and Cu(C3H5O2)2(C6H7NO)2 units. These elemental units are linked by two bridging 3‐pyridylmethanol (3PM) ligands. The Cu2(μ‐CH3CH2CO2)4 group presents a centrosymmetric tetrabridged structure with four syn–syn bridging propionate ligands to which two 3PM molecules are bonded (through N), occupying the apical positions of each square‐pyramidal polyhedron around the CuII ions. The remaining mononuclear group is centred around a third CuII ion, which lies on a symmetry centre and is bound to two monodentate propionate groups (through O), two monodentate 3PM molecules (through N) and two bridging 3PM molecules (through O), thus completing a square‐bipyramidal CuO2N2O2 coordination. 相似文献
4.
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
5.
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
6.
Mrcia R. Siqueira Liange de Oliveira Diehl Robert A. Burrow 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(2):m67-m69
In the centrosymmetric title compound, [Co2(C12H10O2P)4(C5H5N)4(H2O)2], each approximately octahedral Co atom features two trans‐coordinated pyridine molecules, one water molecule, a terminally coordinated monodentate diphenylphosphinate ligand, and two bidentate diphenylphosphinate ligands that bridge the two Co atoms across a centre of inversion to form a dimeric binuclear complex. The discrete molecules are linked by double hydrogen bonds between the terminally coordinated diphenylphosphinate ligand and the water molecule to form a continuous chain along the crystallographic b axis. 相似文献
7.
Jan Moncol Klaudia Jomova Lubomir Zelenicky Tadeusz Lis Marian Valko 《Acta Crystallographica. Section C, Structural Chemistry》2011,67(9):m318-m320
The title compound, [Cu4(C7H4ClO2)4(C6H6NO)4], consists of isolated tetranuclear clusters, where the Cu2+ cations are five‐ and sixfold coordinated by O atoms from the 4‐chlorobenzoate anions and by pyridine N and methanolate O atoms from bidentate 2‐pyridylmethanolate ligands. While three Cu atoms are six‐coordinated by an NO5 donor set forming distorted octahedra, the fourth Cu atom is five‐coordinated by an NO4 donor set forming a distorted tetragonal–pyramidal coordination around the Cu atom. The nucleus is a deformed cubane‐like Cu4O4 structure, with Cu...Cu distances in the range 3.0266 (11)–3.5144 (13) Å. 相似文献
8.
Huub Kooijman Anthony L. Spek Gerard A. van Albada Jan Reedijk 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(2):m124-m126
In the crystal structure of the title compound, [Cu(C2N3)2(C12H12N2)]n, the CuII atom adopts a distorted square‐pyramidal geometry, the basal plane of which is formed by two N atoms of the bipyridine ligand, one N atom of a bidentate dicyanamide anion and one N atom of a monodentate dicyanamide anion [Cu—N = 1.9760 (15)–2.0157 (15) Å]. The apical position is occupied by an N atom of a bidentate dicyanamide anion, located 2.2468 (16) Å from the Cu atom, thus forming a one‐dimensional polymeric chain. 相似文献
9.
Yi He Bei Chuan Zhou Hui‐Zhong Kou Ming Xiong Ru‐Ji Wang Yadong Li 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(9):m478-m480
Using caprolactam as a ligand, the novel title cyano‐bridged yttrium(III)–ferricyanide complex, [Y(caprolactam)2(H2O)4Fe(CN)6] or [FeY(CN)6(C6H11NO)2(H2O)4], has been synthesized and structurally characterized. The Y atom is seven‐coordinate and has approximately pentagonal–bipyramidal stereochemistry, with water molecules occupying apical positions. Of the five ligands in equatorial positions, one is the N‐bound bridging cyano group, and flanking this are two O‐bound caprolactam moieties, which are markedly inclined towards the bridged ferricyanide moiety such that they partially envelop it. Water molecules occupy the remaining two equatorial positions. The Y—N—C—Fe—C—N sequence of atoms lies on a crystallographic twofold axis and is therefore perfectly linear, which has not been observed previously in cyano‐bridged bimetallic complexes. 相似文献
10.
Hui‐Fen Qian Wei Huang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(8):m349-m351
The title compound, [Cu(ClO4)(C5H6N2)2(C12H12N2)]ClO4, was prepared by in situ partial ligand substitution between 3‐aminopyridine and 4,4′‐dimethyl‐2,2′‐bipyridine at room temperature. The central copper(II) ion is five‐coordinated by one bidentate 4,4′‐dimethyl‐2,2′‐bipyridine molecule, two monodentate pyridine‐coordinated 3‐aminopyridine molecules and one apical O atom from the perchlorate counter‐ion. Intermolecular N—H⋯O and C—H⋯O hydrogen‐bonding interactions form a hydrogen‐bond‐sustained network. 相似文献
11.
Gururaj M. Neelgund S. A. Shivashankar T. Narasimhamurthy R. S. Rathore 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(2):m74-m76
The title compound, [Er(C5H7O2)3(C12H8N2)], is a mixed‐ligand metal–organic precursor for chemical vapour deposition, with the Er atom being eight‐coordinate. The coordination polyhedron, described as a distorted square antiprism, is formed by three bidentate (chelating) acetylacetonate residues and a phenanthroline ligand in the apical positions. Molecular assembly via C—H⋯O hydrogen bonds generates a sheet structure in the ac plane. Weak co‐operative C—H⋯π interactions form molecular dimers and contribute to the stability of the intersheet packing. The supramolecular assembly contains voids which form hydrophobic porous channels, surrounded by a cluster of dimers. 相似文献
12.
Shan Gao Zhen‐Zhong Lu Li‐Hua Huo Hui Zhao 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(12):m651-m653
The title complex, [Ag(C5H4NO)(C5H5NO)]n, consists of a polymeric neutral chain involving both a neutral pyridin‐4‐ol ligand and a deprotonated pyridin‐4‐olate monoanion. The AgI atom shows a T‐shaped coordination geometry, defined by one N atom of the pyridin‐4‐ol and one O and one N atom of two independent pyridin‐4‐olate bridges; the N—Ag—N moiety is approximately linear. The polymeric chains are connected via strong O—H⋯O hydrogen bonds and offset π–π interactions into a three‐dimensional network. 相似文献
13.
Tetrakis(2,2′‐bipyridine‐κ2N,N′)tetrakis(μ‐salicylato‐κ3O,O′:O′′)‐quadro‐tetrazinc(II) decahydrate
Yue Wang Mamiko Odoko Nobuo Okabe 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(10):m479-m481
The title compound, [Zn4(C7H4O3)4(C10H8N2)4]·10H2O, crystallizes as a centrosymmetric tetranuclear cyclic complex containing four ZnII atoms bridged by four carboxylate groups from salicylate ligands, with a syn–anti configuration. Each ZnII atom has a distorted trigonal–bipyramidal coordination geometry, formed by two N atoms of a 2,2′‐bipyridine ligand and three O atoms from two salicylate ligands. The complex is stabilized by intramolecular π–π interactions between pairs of bipyridine rings and a 16‐membered gear‐wheel‐shaped cyclic framework. The hydrogen‐bonding network is formed via the water molecules. 相似文献
14.
Pascale Lemoine Karima Bendada Bernard Viossat 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(10):m489-m491
The asymmetric unit of the title compound, [Zn(C7H5O3)2(C10H8N2)], contains one monomeric zinc complex. The Zn atom is coordinated to one 2,2′‐bipyridyl ligand via both N atoms and to two salicylate anions (Hsal−) in a bidentate chelating manner involving carboxylate O‐atom coordination. The complex exhibits a distorted octahedral geometry about the ZnII atom, with the `apical' positions occupied by one of the two N atoms of the bipyridyl ligand and an O atom from one Hsal− ligand; the Zn atom is 0.168 (1) Å out of the `basal' plane. Two intramolecular six‐membered hydrogen‐bonded rings are present, generated from interactions between the carboxyl and hydroxyl groups of the salicylate ligands. The crystal packing is governed by weak C—H⋯O and C—H⋯π interactions. 相似文献
15.
Shu‐Qin Liu Hisashi Konaka Takayoshi Kuroda‐Sowa Gui‐Ling Ning Megumu Munakata 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(4):m194-m196
In the title complex, [Ag2(C7H4NO4)2(C16H16S2)], each AgI atom is trigonally coordinated by one S atom of a 2,11‐dithia[3.3]paracyclophane (dtpcp) ligand, and by one N and one O atom of a 6‐carboxypyridine‐2‐carboxylate ligand. Dtpcp acts as a bidentate ligand, bridging two inversion‐related AgI atoms to give a dinuclear silver(I) compound. The dinuclear moieties are interconnected via O—H·O hydrogen bonds to form a two‐dimensional zigzag sheet. Two such sheets are interwoven viaπ–π interactions between pyridine rings, affording an interwoven bilayer network. 相似文献
16.
Mireille Perec Ricardo Baggio 《Acta Crystallographica. Section C, Structural Chemistry》2010,66(11):m339-m342
In the monomeric title compound, [Cu(C4H4O5)(C6H6N2O)(H2O)]·1.5H2O, the CuII cation is bound in a square‐pyramidal coordination to a tridentate oxydiacetate (ODA) ligand, a monodentate pyridine‐3‐carboxamide (p3ca) ligand and one aqua ligand, where the two organic ligands form the basal plane and the water O atom occupies the unique apical site. The ODA ligand presents a slight out‐of‐plane puckering in its central ether O atom, while the p3ca ligand is essentially planar. The availability of efficient donors and acceptors for hydrogen bonding results in the formation of strongly linked hydrogen‐bonded bilayers parallel to (101), with an interplanar distance of 3.18 (1) Å and a stacking separation between the bilayers of 3.10 (1) Å, both of them governed by extended π–π interactions. The disordered nature of the solvent water molecules around inversion centres is discussed. The monoaqua compound is compared with the octahedral diaqua analogue, [Cu(C4H4O5)(C6H6N2O)(H2O)2], reported recently [Perec & Baggio (2009). Acta Cryst. C 65 , m296–m298]. 相似文献
17.
Zhi‐Hong Wu Jin‐Hua Cai Xu‐Ju Yin Ying‐Heng Huang Yi‐Min Jiang 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(6):m267-m269
In the polymeric title compound, {[Cu(C10H7NO5)(H2O)]·H2O}n, the Cu atom adopts a square‐based pyramidal coordination involving a N,O,O′‐tridentate glycine dianionic ligand, a water O atom and an apical bridging carboxylate O atom from an adjacent ligand. The title compound also adopts a carboxylate‐bridged chain structure. The molecular chain propagates in a helical fashion along the b axis of the monoclinic unit cell. Neighbouring chains are linked together to form a three‐dimensional network via hydrogen‐bonding interactions between coordinated and uncoordinated water molecules and O atoms of the bridging carboxylate groups. 相似文献
18.
Pierre Thury 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(1):m50-m52
In the title compound, {[UO2(C7H6NO2)(OH)]}n, the U atom is in a seven‐coordinated pentagonal–bipyramidal environment. Each uranyl ion is bound to the N and one of the O atoms of a 2‐pyridylacetate ligand, to one O atom from a second ligand and to two bridging hydroxide groups, all located in the equatorial plane. Hydroxide bridging gives uranyl dimers, which are assembled into planar and rectilinear ribbons by carboxylate bridges. 12‐Membered rings are defined by proximal dimers in the ribbons, with two intra‐ring hydrogen bonds involving the hydroxide groups and two carboxylate O atoms. 相似文献
19.
Kristin Kirschbaum Albert Fratini Shawn Swavey 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(5):m186-m187
The title compound, [Tb2(C24H12F9O6S3)2(C8H6N4)]·C4H8O2, has two terbium(III) centers bridged by the polyazine ligand 2,2′‐bipyrimidine (bpm), which is distorted from planarity by 7.0 (2)°. The terminal ligand 4,4,4‐trifluoro‐1‐(2‐thienyl)butane‐1,3‐dione (tta) is bidentate, coordinating through the two O atoms, while the bridging ligand is bis‐bidentate, coordinating through four equivalent N atoms. Both the complex and the ethyl acetate solvent molecules are disordered. The structure was refined as a non‐merohedral twin. 相似文献
20.
Gansheng Huang Dongsheng Liu Xihe Huang Changcang Huang Xiaohuan Qin 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(11):m369-m371
In the title compound, [Pb(C6H4NO2)(N3)(H2O)]n, the Pb ion is seven‐coordinated by three N atoms from three azide ligands, two O atoms from two isonicotinate (inic) ligands and two O atoms from two coordinated water molecules, forming a distorted monocapped triangular prismatic coordination geometry. Each azide ligand bridges three PbII ions in a μ1,1,3 coordination mode to form a two‐dimensional three‐connected 63 topology network extending in the bc plane. The carboxylate group of the inic unit and the aqua ligand act as coligands to bridge PbII ions. Adjacent two‐dimensional layers are connected by hydrogen‐bonding interactions between the isonicotinate N atom and the water molecule, resulting in an extended three‐dimensional network. The title complex is the first reported coordination polymer involving a p‐block metal, an azide and a carboxylate. 相似文献