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1.
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
2.
Wen‐Na Zhao Jian‐Wei Zou Qing‐Shen Yu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(9):m443-m444
The title one‐dimensional chain nickel(II)–disulfide complex, [Ni(C14H8O4S2)(C5H5N)2(H2O)]n, has each NiII cation coordinated by two N atoms from two pyridine ligands, three carboxylate O atoms from two different dithiodibenzoate ligands and one O atom from a coordinated water molecule, in a distorted octahedral coordination geometry. Each dithiodibenzoate ion links two NiII cations through its carboxylate O atoms, making the structure polymeric. Hydrogen‐bond interactions between two shoulder‐to‐shoulder chains lead to the formation of a ladder‐like structure. 相似文献
3.
Poly[(μ4‐pyrazine‐2,5‐dicarboxylato)cadmium(II)], [Cd(C6H2N2O4)]n or [Cd(pzdc)]n (pzdc is the pyrazine‐2,5‐dicarboxylate dianion), has been synthesized hydrothermally. The asymmetric unit consists of a CdII atom and two independent halves of pzdc ligands that can be expanded via inversion through the centres of the ligands so that each ligand binds to four CdII atoms with the same binding mode using six donor atoms. The CdII centre is in a distorted octahedral coordination geometry with four O‐ and two N‐atom donors from four pzdc ligands. The infinite linkage of the metal atoms and ligands forms a three‐dimensional framework with a rectangular channel which is so narrow that there is no measurable void space in the overall structure. This coordination polymer represents the first example of (4,4,4)‐connected three‐nodal framework. 相似文献
4.
Hai‐Yan Ge Yu‐Mei Zhang Bao‐Long Li Yong Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(10):m501-m503
The coordination geometry of the CdII atom in the title complex, [Cd(NCS)2(C12H12N6)2]n or [Cd(NCS)2(mbtz)2]n, where mbtz is 1,3‐bis(1,2,4‐triazol‐1‐ylmethyl)benzene, is a distorted compressed octahedron in which the CdII atom lies on an inversion centre, coordinated by four N atoms from the triazole rings of four mbtz ligands and two N atoms from two monodentate NCS− ligands. The structure is polymeric, with 24‐membered spiro‐fused rings extending along [100] and with the 24‐membered ring containing two inversion‐related mbtz molecules. 相似文献
5.
Xian‐Fa Zhang Shan Gao Li‐Hua Huo Hui Zhao 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(12):m617-m619
In the title coordination polymer, [Pb(C5H2N2O4)(H2O)]n, the PbII atom is seven‐coordinated by one N atom and five O atoms from four individual imidazole‐4,5‐dicarboxylate (HIDC2−) groups and one water molecule. It is interesting to note that the HIDC2− group serves as a bridging ligand to link the PbII atoms into a three‐dimensional microporous open‐framework. 相似文献
6.
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
7.
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
8.
Bao‐Zong Li Xun‐Gao Liu Zhao‐Hui Wang Yong Zhang Bao‐Long Li 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(1):m10-m12
In the crystal structure of the title complex, poly[μ‐1,4‐bis(1,2,4‐triazol‐1‐yl)butane‐di‐μ‐1,5‐dicyanamido‐cadmium(II)], [Cd(C2N3)2(C8H12N6)]n or [Cd(dca)2(btb)]n, where dca is dicyanamide and btb is 1,4‐bis(1,2,4‐triazol‐1‐yl)butane, each CdII atom occupies a center of symmetry and is in a six‐coordinated distorted octahedral environment. Four N atoms from four dca ligands fill the equatorial positions, and two N atoms from two btb ligands occupy the axial positions. The dca ligands adopt an end‐to‐end coordination mode and link the CdII atoms to form a 12‐membered Cd(dca)2Cd ring, and neighboring rings extend along the b axis to form a [Cd(dca)2]n chain. The btb ligands, acting as bridging bidentate ligands, link the CdII atoms of adjacent one‐dimensional [Cd(dca)2]n chains, forming a rhombic two‐dimensional network. 相似文献
9.
Xiang‐Rong Hao Zhong‐Min Su Ya‐Hui Zhao Kui‐Zhan Shao Yong Wang 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(11):m469-m471
A novel cadmium(II) coordination polymer, poly[[[bis(4,4′‐bipyridine)cadmium(II)]‐μ3‐4,4′‐dicarboxybiphenyl‐3,3′‐dicarboxylato] 0.35‐hydrate], {[Cd(C16H8O8)(C10H8N2)2]·0.35H2O}n, was obtained by reaction of Cd(CH3COO)2·3H2O, 4,4′‐bipyridine (4,4′‐bpy) and biphenyl‐3,3′,4,4′‐tetracarboxylic acid (H4L) under hydrothermal conditions. Each CdII atom lies at the centre of a distorted octahedron, coordinated by four O atoms from three H2L2− ligands and N atoms from two monodentate 4,4′‐bpy ligands. Each H2L2− ligand coordinates to three CdII atoms through two carboxylate groups, one acting as a bridging bidentate ligand and the other in a chelating bidentate fashion. Two Cd atoms, two H2L2− anions and four 4,4′‐bpy ligands form a ring dimer node, which links into an extended broad zonal one‐dimensional chain along the c axis. 相似文献
10.
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
11.
E Yang Rong‐Qiang Zhuang Jian‐Xin Chen 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(12):m612-m613
The title complex, {[Cd(C8H11O4)2(C10H8N2)(H2O)]·H2O}n, consists of linear chains formed through 4,4′‐bipyridine ligands linking seven‐coordinated CdII ions. Each CdII ion is in a distorted pentagonal–bipyramidal environment, coordinated by one water ligand, two 4‐carboxycyclohexane‐1‐carboxylate ligands and one bridging 4,4′‐bipyridine ligand to generate linear chains. The water molecules and the Cd atom on one side, and the 4,4′‐bipyridine unit on the other, are bisected by two sets of twofold axes. The carboxylate group of the 4‐carboxycyclohexane‐1‐carboxyl ligand chelates a CdII ion, while the (protonated) carboxyl group forms hydrogen bonds with adjacent chains, resulting in a layered structure. This is the first reported occurrence of a dicarboxycyclohexane ligand exhibiting a non‐bridging coordination mode. 相似文献
12.
Uwe Ruschewitz Ingo Pantenburg 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(9):m483-m484
In catena‐poly[[[triaquacadmium(II)]‐μ‐acetylenedicarboxylato‐κ4O,O′:O′′,O′′′] hydrate], {[Cd(C4O4)(H2O)3]·H2O}n, the CdII atom is coordinated by two bidentate carboxylate groups and three water molecules, thus forming a sevenfold coordination polyhedron with all atoms located on general sites. These polyhedra are connected by the bifunctional acetylenedicarboxylate ligands, forming zigzag chains running parallel to [120]. Hydrogen bonds, which involve the non‐coordinated water molecule, connect these chains to form a three‐dimensional framework. 相似文献
13.
Bao‐Zong Li Xun‐Gao Liu Yan‐Fen Peng Bao‐Long Li Yong Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(2):m41-m44
In the title complex, poly[cadmium(II)‐μ2‐1,4‐bis(1,2,4‐triazol‐1‐ylmethyl)benzene‐di‐μ2‐thiocyanato], [Cd(NCS)2(C12H12N6)]n, the CdII atom lies on an inversion centre in a distorted octahedral environment. Four N atoms from the thiocyanate and 1,4‐bis(1,2,4‐triazol‐1‐ylmethyl)benzene (bbtz) ligands occupy the equatorial positions, and two S atoms from symmetry‐related thiocyanate ligands occupy the axial positions. The benzene ring of the bbtz ligand lies about an inversion centre. Single thiocyanate bridges link the CdII atoms into two‐dimensional sheets containing novel 16‐membered [Cd4(μ‐NCS‐N:S)4] rings. The bbtz ligands further link these two‐dimensional sheets into an unprecedented covalent three‐dimensional network for the cadmium–thiocyanate system. 相似文献
14.
Xin‐Hua Li Sai‐Zhen Yang 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(9):m423-m425
In the title centrosymmetric dimer, [Pb2(sbc)2(phen)2]·2H2O [sbc is the 2‐sulfonatobenzoate dianion (C7H4O5S) and phen is 1,10‐phenanthroline (C12H8N2)], each PbII ion is six‐coordinated by four O atoms, viz. carboxylate and sulfonate O atoms from two sbc anions, and two N atoms from a 1,10‐phenanthroline ligand. One 1,10‐phenanthroline ligand and the carboxylate group of one sbc ligand are chelated to each PbII cation, and the sulfonate group of the other sbc unit is monodentate. One O atom of the chelated carboxylate group also bridges to the other PbII cation, so that each pair of PbII ions is bridged by two sbc anions and has the same coordination environment, forming a dinuclear ring. Each pair of PbII ions is thus connected by two different kinds of bridges, namely a carboxylate short bridge and a carboxylate–sulfonate long bridge. There is also a special position of site symmetry at the centre of the two PbII cations. 相似文献
15.
Maria Ana Castro Zulema D. Chaia Oscar E. Piro Fabio D. Cukiernik Eduardo E. Castellano Marcia Rusjan 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(7):m393-m395
The title compound, tetrakis(μ‐3,4,5‐triethoxybenzoato‐κ2O:O′)bis[(pyrazine‐κN)rhodium(II)](Rh—Rh), [Rh2(C13H17O5)4(C4H4N2)2], crystallizes on an inversion centre in the triclinic space group . The equatorial carboxylate ligands bridge the two RhII atoms, giving a binuclear lantern‐like structure. The pyrazine molecules occupy the two axial coordination sites. The phenyl rings are tilted by ca 10° with respect to the attached carboxylate groups. The pyrazine planes have a torsion angle of ca 19° around the Rh—N bond with respect to the plane of the nearer carboxylate group and are not coplanar with the Rh—Rh bond. 相似文献
16.
Abdurrahman engül Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(3):m119-m121
In the title compound, [Cu(C6H4NO3)2(H2O)2], the CuII ion lies on an inversion centre and has an elongated octahedral environment, equatorially trans‐coordinated by two N,O‐bidentate picolinate ligands and axially coordinated by two water O atoms. The complex molecules form layers, which are linked by O—H⋯O hydrogen bonds between the aqua ligands and neighbouring carboxylate groups. An intramolecular hydrogen bond between the coordinated carboxylate O atom and the hydroxy H atom is also observed. 相似文献
17.
Chengbing Ma Feng Chen Changneng Chen Qiutian Liu 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(12):m516-m518
In the title compound, [Mn(C5H3N2O4)2(H2O)2], the MnII atom lies on an inversion centre, is trans‐coordinated by two N,O‐bidentate 1H‐imidazole‐4,5‐dicarboxylate monoanionic ligands [Mn—O = 2.202 (3) Å and Mn—N = 2.201 (4) Å] and two water molecules [Mn—O = 2.197 (4) Å], and exhibits a distorted octahedral geometry, with adjacent cis angles of 76.45 (13), 86.09 (13) and 89.20 (13)°. The complete solid‐state structure can be described as a three‐dimensional supramolecular framework, stabilized by extensive hydrogen‐bonding interactions involving the coordinated water molecules, the carboxy O atoms and the protonated imidazole N atoms of the imidazole‐4,5‐dicarboxylate ligands. 相似文献
18.
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
19.
Chang‐Sheng Gu Xiao‐Min Hao Shu‐Xia Guan Ji‐Wei Liu 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(11):m516-m518
In the title coordination polymer, {[Ba(C8H5Cl2O3)2(H2O)]·H2O}n, each BaII atom is nine‐coordinated by six carboxylate O atoms and one ether O atom from five symmetry‐related 2,4‐dichlorophenoxyacetate ligands, and by two O atoms from water molecules, thus defining a distorted tricapped trigonal prism. The BaII ions are bridged by bidentate water molecules and by tridentate and tetradentate 2,4‐dichlorophenoxyacetate groups, leading to a two‐dimensional layer structure. The crystal structure is further stabilized by hydrogen‐bonding interactions within each layer. 相似文献
20.
Xiang Hao Yong‐Ge Wei Qun Liu Shi‐Wei Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(3):296-298
The title complex, [MnII(nic)2(H2O)2]n [nic is 3‐pyridinecarboxylate (also called nicotinate), C6H4NO2?], has a two‐dimensional layer structure with the unique Mn atom on an inversion centre. In each layer, all nicotinate ligands are coordinated to Mn atoms in a bridging/bidentate mode, thus linking the {MnII(nic)2(H2O)2} monomeric units together to form a dative‐bond‐based layered polymer. The intra‐layer hydrogen bonds involving all water molecules and the carboxylate groups may play an auxiliary part in stabilizing the layer. The layers are arranged in an ordered manner along the a axis through van der Waals forces so as to complete the solid‐state structure of the crystal. 相似文献