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1.
Ming‐Lin Guo Chen‐Hu Guo 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(7):m266-m268
In the title complex, {[Cd(C5H6O4)(H2O)2]·4H2O}n, the dimethylmalonate–cadmium metal–organic framework co‐exists with an extended structure of water molecules, which resembles a sodalite‐type framework. In the asymmetric unit, there are five independent solvent water molecules, two of which are in special positions. The Cd atoms are eight‐coordinated in a distorted square‐antiprismatic geometry by six O atoms of three different dimethylmalonate groups and by two water molecules, and form a two‐dimensional honeycomb layer parallel to the bc plane. Two such layers sandwich the hydrogen‐bonded water layer, which has a sodalite‐type structure with truncated sodalite units composed of coordinated and solvent water molecules. This work is the first example of a dimethylmalonate cadmium complex containing truncated sodalite‐type water clusters. 相似文献
2.
Ming‐Lin Guo Chen‐Hu Guo 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(5):m195-m197
In the title complex, {[La2(C5H6O4)3(H2O)4]·H2O}n, the La atoms are connected by bridging O atoms from carboxylate groups to build, through centres of inversion, two‐dimensional layers parallel to the ac plane containing decanuclear 20‐membered rings. The coordinated water molecules are involved in intralayer hydrogen‐bond interactions. Adjacent layers are linked via hydrogen bonding to the solvent water molecules. This work represents the first example of a new substituted malonate–lanthanide complex. 相似文献
3.
Er‐Lei Yang Yun‐Liang Jiang Yu‐Ling Wang Qing‐Yan Liu 《Acta Crystallographica. Section C, Structural Chemistry》2010,66(9):m231-m234
The title compound, {[Cd2(C10H12N2O8)(H2O)]·H2O}n, consists of two crystallographically independent CdII cations, one ethylenediaminetetraacetate (edta) tetraanion, one coordinated water molecule and one solvent water molecule. The coordination of one of the Cd atoms, Cd1, is composed of five O atoms and two N atoms from two tetraanionic edta ligands in a distorted pentagonal–bipyramidal coordination geometry. The other Cd atom, Cd2, is six‐coordinated by five carboxylate O atoms from five edta ligands and one water molecule in a distorted octahedral geometry. Two neighbouring Cd1 atoms are bridged by a pair of carboxylate O atoms to form a centrosymmetric [Cd2(edta)2]4− unit located on the inversion centre, which is further extended into a two‐dimensional layered structure through Cd2—O bonds. There are hydrogen bonds between the coordinated water molecules and carboxylate O atoms within the layer. The solvent water molecules occupy the space between the layers and interact with the host layers through O—H...O and C—H...O interactions. 相似文献
4.
Ming‐Lin Guo 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(10):m395-m397
The title 3‐nitrophthalate–calcium coordination polymer, {[Ca(C8H3NO6)(H2O)2]·H2O}n, crystallizes as a one‐dimensional framework. The CaII centre has a distorted pentagonal–bipyramidal geometry, being seven‐coordinated by five O atoms from three different 3‐nitrophthalate groups and by two water molecules, resulting in a one‐dimensional zigzag chain along the a‐axis direction by the interconnection of the four O atoms from the two carboxylate groups. There is a D3 water cluster composed of the coordinated and the solvent water molecules within such chains. Adjacent chains are aggregated into two‐dimensional layers via hydrogen bonds in the c‐axis direction. The whole three‐dimensional structure is further stabilized by weak O—H...O hydrogen bonds between the O atoms of the nitro group and the water molecules. 相似文献
5.
Ming‐Lin Guo Feng‐Qin Wang 《Acta Crystallographica. Section C, Structural Chemistry》2010,66(12):m379-m383
The coordination mode of the dimethylmalonate ligand in the two title CuII complexes, {[Cu(C5H3O4)(H2O)]·H2O}n, (I), and [Cu(C5H3O4)(H2O)]n, (II), is the same, with chelated six‐membered, bis‐monodentate and bridging bonding modes. However, the coordination environment of the CuII atoms, the connectivity of their metal–organic frameworks and their hydrogen‐bonding interactions are different. Complex (I) has a perfect square‐pyramidal CuII environment with the aqua ligand in the apical position, and only one type of square grid consisting of CuII atoms linked via carboxylate bridges to three dimethylmalonate ligands, with weak hydrogen‐bond interactions within and between its two‐dimensional layers. Complex (II) has a coordination geometry that is closer to square pyramidal than trigonal bipyramidal for its CuII atoms with the aqua ligand now in the basal plane. Its two‐dimensional layer structure comprises two alternating grids, which involve two and four different dimethylmalonate anions, respectively. There are strong hydrogen bonds only within its layers. 相似文献
6.
Shan Gao Ji‐Wei Liu Li‐Hua Huo Hui Zhao 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(7):m348-m350
In the title coordination polymer, [Ba(1,3‐BDOA)(H2O)2]n (where 1,3‐BDOA2− is the m‐phenylenedioxydiacetate dianion, C10H8O6), each BaII ion is ten‐coordinated by six carboxyl O atoms and two ether O atoms from different 1,3‐BDOA2− ligands, as well as by two water molecules, thus defining a dodecahedron. The BaII atoms are covalently linked by 1,3‐BDOA2− ligands in different crystallographic directions, giving rise to a three‐dimensional open framework. The crystal structure is further stabilized by hydrogen bonds and π–π stacking interactions. In previously studied polymers of this type, the 1,3‐BDOA2− ligand showed multiple bridging modes with metal ions, including bi‐, tri‐, tetra‐ and hexadentate. The title BaII complex represents a novel three‐dimensional coordination polymer constructed by octadentate bridging 1,3‐BDOA2− ligands. 相似文献
7.
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
8.
Sitang Yan Lianxu Shi Chuande Wu 《Acta Crystallographica. Section C, Structural Chemistry》2010,66(4):m110-m113
The title compound, {[Cd2(C9HNO8)(H2O)4]·H2O}n, consists of two crystallographically independent CdII cations, one tetrabasic pyridine‐2,3,5,6‐tetracarboxylate (pdtc) anion, four coordinated water molecules and one solvent water molecule. The CdII cations have distorted square‐antiprismatic (one pyridine N, six carboxylate O and one water O atom) and octahedral (three carboxylate O and three water O atoms) coordination environments. Each pdtc ligand employs its pyridine and carboxylate groups to chelate and bridge seven CdII cations. The square‐antiprismatic coordinated CdII cations are linked by pdtc ligands into a lamellar framework structure, while the octahedral coordinated CdII cations are bridged by the μ2‐carboxylate O atoms and the pdtc ligands into a chain network that further joins neighbouring lamellae into a three‐dimensional porous network. The cavities are filled with solvent water molecules that are linked to the host through complex hydrogen bonding. 相似文献
9.
Ming‐Lin Guo Feng‐Qin Wang 《Acta Crystallographica. Section C, Structural Chemistry》2010,66(7):m184-m187
The title complex, [CaCu(C5H6O4)2(H2O)2]n, is the first heterobimetallic complex based on a substituted malonate dianion. The CuII cation and two independent 2,2‐dimethylmalonate (or 2,2‐dimethylpropanedioate) dianions build up a robust dianionic [Cu(C5H6O4)2]2− complex, which acts as a building block to coordinate to four Ca2+ cations. Each CuII centre is in a four‐coordinate square plane of dimethylmalonate O atoms, while each CaII atom is in an eight‐coordinate distorted bicapped trigonal–prismatic environment of six O atoms from four different dimethylmalonate groups and two water molecules. This arrangement creates a two‐dimensional layer connectivity of the structure. The dianionic [Cu(C5H6O4)2]2− units are involved in different intermolecular hydrogen‐bonding interactions with water molecules via the formation of hydrogen‐bonded rings of graph sets R12(8) and R(6) within this layer. The crystal was nonmerohedrally twinned by rotation about [011] with a major twin volume fraction of 0.513 (3). 相似文献
10.
Denise J. Xu Long Pan Thomas J. Emge Xiao‐Ying Huang Jing Li 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(4):m150-m152
In the title compound, [Cu(C14H18O4)(H2O)]n, each CuII atom bonds to four O atoms of four adamantanediacetate (ada) ligands in equatorial positions and an O atom from a water molecule in the apical position. Two adjacent CuII atoms form a paddle‐wheel unit with four ada ligands. The distance between the two Cu atoms is 2.5977 (3) Å. A crystallographic inversion center is located at the center of the Cu–Cu core. Each Cu2(ada)4 paddle‐wheel further bonds to four adjacent identical paddle‐wheel units, generating a two‐dimensional layered structure of Cu(ada)(H2O) with a 44 topology. 相似文献
11.
The title complex, [BaZn(C3H2O4)2(H2O)4]n, is polymeric, due to the connectivity brought about by each malonate dianion bonding to two different ZnII cations and two different BaII cations. The BaII cations, on crystallographic twofold axes, have slightly distorted square‐antiprismic coordination, with Ba—O distances ranging from 2.795 (2) to 2.848 (2) Å. The ZnII cations, which lie on crystallographic centres of symmetry, have distorted octahedral coordination, with Zn—O bonds in the range 2.0364 (19)–2.3248 (18) Å. The water molecules participate in extensive O—H⋯O hydrogen bonding. The structure comprises alternating layers along [100], with one type containing ZnII cations and malonate dianions, while the other is primarily composed of BaII cations and water molecules. 相似文献
12.
Aleksandra Drzewiecka Krystyna Stepniak Anna Barcicka Anna E. Koziol 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(8):m346-m348
The asymmetric unit in the title compound, {[Cd2(C4H4O6)(SO4)(H2O)5]·3H2O}n, is composed of two cadmium cations, one (R,R)‐tartrate and one sulfate anion, five aqua ligands and three solvent water molecules. One of the cadmium ions is coordinated in an octahedral environment, whereas the second is surrounded by seven O atoms in a pentagonal–bipyramidal geometry. Both types of coordination polyhedra form two sets of perpendicular non‐intersecting polymeric chains. CdO6 octahedra share two corners, while CdO7 units are joined by a bridging carboxylate group. An extensive hydrogen‐bond pattern involving all of the OH groups contributes to the stabilization of the structure. 相似文献
13.
Qian‐Jun Deng Ming‐Hua Zeng Hong Liang Ke‐Long Huang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(9):m389-m391
The title compound, [Cd(C3H6NO5P)(H2O)2]n, is a three‐dimensional polymeric complex. The asymmetric unit contains one Cd atom, one N‐(phosphonomethyl)glycine zwitterion [(O−)2OPCH2NH2+CH2COO−] and two water molecules. The coordination geometry is a distorted CdO6 octahedron. Each N‐(phosphonomethyl)glycine ligand bridges four adjacent water‐coordinated Cd cations through three phosphonate O atoms and one carboxylate O atom, like a regular PO43− group in zeolite‐type frameworks. One‐dimensional zigzag (–O—P—C—N—C—C—O—Cd–)n chains along the [101] direction are linked to one another via Cd—O—P bridges and form a three‐dimensional network motif with three types of channel systems. The variety of O—H⋯O and N—H⋯O hydrogen bonds is likely to be responsible for stabilizing the three‐dimensional network structure and preventing guest molecules from entering into the channels. 相似文献
14.
Hong Liu Zhan‐Feng Ju Wei Li Jie Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(9):m413-m415
The title compound, {[Ba2(C13H8N2O6S)2(H2O)6]·C10H8N2}n, possesses a novel two‐dimensional porous coordination network, in which each BaII ion is nine‐coordinated by three carboxylate O atoms, two sulfonate O atoms and four water molecules in an irregular coordination environment. Hydrogen‐bond interactions between coordinated water molecules and sulfonate/hydroxyl groups hold the network layers together and produce a three‐dimensional supramolecular architecture. 相似文献
15.
Zhao‐Peng Deng Shan Gao Li‐Hua Huo Hui Zhao 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(5):m225-m227
In the title complex, [Mn(SO4)(C3H7NO)(H2O)2]n, each MnII ion has a distorted octahedral geometry formed by three O atoms of three different sulfate groups, one O atom of a dimethylformamide ligand and two water molecules. The sulfate groups act as tridentate bridging ligands connecting the MnII ions into a two‐dimensional layer structure which can be regraded as a 4.82 network. 相似文献
16.
Ming‐Lin Guo Hou‐Ying Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(1):m30-m32
The title complex, [BaNi(C3H2O4)2(H2O)3]n, is polymeric, with two non‐equivalent malonate dianions bridging one Ni atom and five different Ba atoms. The Ni atoms have a distorted octahedral (NiO6) environment, and are coordinated by four malonate O atoms in a planar arrangement and two water molecules in axial positions. The Ba atom may be described as a BaO9 polyhedron in a monocapped square‐antiprismatic environment, which involves two water molecules and seven O atoms from different malonate ligands. The three‐dimensional structure is further maintained and stabilized by hydrogen bonds. 相似文献
17.
In the title compound, {[Co2(C14H8O4)2(C10H8N2)2(H2O)2]·2C14H10O4}n, each CoII ion is six‐coordinate in a slightly distorted octahedral geometry. Both CoII ions are located on twofold axes. One is surrounded by two O atoms from two biphenyl‐2,2′‐dicarboxylate (dpa) dianions, two N atoms from two 4,4′‐bipyridine (bpy) ligands and two water molecules, while the second is surrounded by four O atoms from two dpa dianions and two N atoms from two bpy ligands. The coordinated dpa dianion functions as a κ3‐bridge between the two CoII ions. One carboxylate group of a dpa dianion bridges two adjacent CoII ions, and one O atom of the other carboxylate group also chelates to a CoII ion. The CoII ions are bridged by dpa dianions and bpy ligands to form a chiral sheet. There are several strong intermolecular hydrogen bonds between the H2dpa solvent molecule and the chiral sheet, which result in a sandwich structure. 相似文献
18.
Feng‐Qin Wang Fan‐Li Lu Bin Wei Yong‐Nan Zhao 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(1):m42-m44
The novel title complex, {[Cu3(C8H3NO6)2(OH)2(H2O)6]·2H2O}n, has a one‐dimensional polymeric double chain structure where the three Cu atoms are linked by μ2‐OH and μ2‐H2O groups, and these trinuclear centres are bridged by two 3‐nitrophthalate ligands. The asymmetric unit contains one and a half crystallographically independent Cu atoms (one lying on a centre of inversion), both coordinated by six O atoms and exhibiting distorted octahedral coordination geometries, but with different coordination environments. Each 3‐nitrophthalate ligand connects to three Cu atoms through two O atoms of one carboxylate group and one O atom of the nitro group. The remaining carboxylate group is free and is involved in intrachain hydrogen bonds, reinforcing the chain linkage. 相似文献
19.
Xu‐Cheng Fu Xiao‐Yan Wang Ming‐Tian Li Xiao‐Tao Deng Cheng‐Gang Wang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(8):m343-m345
The title complex, {[Cu2(C8H4O4)2(C3H4N2)4(H2O)]·H2O}n, is a three‐dimensional polymer formed through bridging by phthalate dianions of two different CuII cations and a network of O(N)—H⋯O hydrogen bonds. The Cu—O and Cu—N interaction distances are in the ranges 2.0020 (16)–2.4835 (17) and 1.968 (2)–1.9855 (19) Å, respectively. The structure is composed of alternating polymer chains parallel to the c axis, with a shortest Cu⋯Cu distance of 6.3000 (5) Å. 相似文献
20.
Andr Deluzet Olivier Guillou 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(7):m277-m279
The title compound is composed of one‐dimensional polymeric {[Er2(C12O12)(H2O)10]·4H2O}n chains containing Er in a slightly distorted antiprismatic eightfold coordination. The benzenehexacarboxylate ion is located about an inversion centre. Water molecules of crystallization, linked by hydrogen bonding to water molecules of the rare earth coordination spheres or the carboxylate groups of the organic ligands, fill the space generated by the packing of the separated chains. 相似文献