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1.
Belkacem Benmerad Achoura Guehria‐Laïdoudi Grald Bernardinelli Fadila Balegroune 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(3):321-323
The title compound, [La2(C3H2O4)3(H2O)4]·H2O, forms a layer‐type polymeric structure. The layers, which contain infinite puckered four‐membered La—O—La—O rings in a pseudo‐ternary symmetry, are formed by the lanthanum and one independent malonate group. They are interconnected by the second independent malonate group, giving a three‐dimensional framework in which wide channels accommodate one disordered water molecule of crystallization. The La atom lies on a twofold axis and is ten‐coordinated by eight O atoms from carboxylate groups and two water molecules. One malonate group is monodentate and triply bridging chelating, whilst the other is doubly monodentate. The extensive network of hydrogen bonds and bridge bonds observed in this structure enhances the structural stability. Despite some identical subfeatures, this structure is quite different from that observed in [La2(C3H2O4)3(H2O)3]·2H2O. 相似文献
2.
Khaoulani Idrissi Abdallah Saadi Mohamed Rafiq Mohamed Guelzim Abdelhalim 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(6):i43-i45
The structure of the title compound, (NH4)2[Mg(H2O)6]3(HPO3)4, consists of [Mg(H2O)6]2+ and (NH4)+ cations and (HPO3)2− anions held together by an intricate network of hydrogen bonds involving all H atoms except for one linked directly to a P atom. The Mg2+ cations are octahedrally coordinated by six water molecules. One of the Mg atoms is located on a site with 2/m symmetry, whereas the other Mg atom and the P and N atoms occupy sites with m symmetry. 相似文献
3.
Yuan‐Yuan Gu Yan‐Tuan Li Zhi‐Yong Wu Wei Sun Man Jiang 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(3):m115-m117
The title complex, bis[μ3‐cis‐N‐(2‐aminopropyl)‐N′‐(2‐carboxylatophenyl)oxamidato(3−)]‐1:2:4κ7N,N′,N′′,O:O′,O′′:O′′′;2:3:4κ7O′′′:N,N′,N′′,O:O′,O′′‐bis(2,2′‐bipyridine)‐2κ2N,N′;4κ2N,N′‐dichlorido‐1κCl,3κCl‐tetracopper(II) dihydrate, [Cu4(C12H12N3O4)2Cl2(C10H8N2)2]·2H2O, consists of a neutral cyclic tetracopper(II) system having an embedded centre of inversion and two solvent water molecules. The coordination of each CuII atom is square‐pyramidal. The separations of CuII atoms bridged by cis‐N‐(2‐aminopropyl)‐N′‐(2‐carboxylatophenyl)oxamidate(3−) and carboxyl groups are 5.2096 (4) and 5.1961 (5) Å, respectively. A three‐dimensional supramolecular structure involving hydrogen bonding and aromatic stacking is observed. 相似文献
4.
The title organic–inorganic hybrid compound, [Co(C10H8N2O2)2(H2O)2]2[Mo8O26]·2H2O, consists of [Co(bpdo)2(H2O)2]2+ (bpdo is 2,2‐bipyridine N,N′‐dioxide) and ξ‐[Mo8O26]4− groups in a 2:1 ratio, plus two water solvent molecules. The independent Co atom in the cation is coordinated by four O atoms from two bpdo ligands and two water molecules, in a distorted octahedral geometry. The counter‐anions, built up around a symmetry center, are linked by solvent water molecules through O—H...O hydrogen bonds to generate two‐dimensional layers, which are in turn linked by coordinated water molecules from the cationic units through further O—H...O hydrogen bonds, forming a three‐dimensional supramolecular structure. 相似文献
5.
Ivan Poto
k Michal Dunaj‐Jur
o Duan Miklo Werner Massa Lothar Jger 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(4):363-365
In the title compound, [Cu(C2N3)(C10H8N2)2]BF4, the CuII atom shows distorted trigonal‐bipyramidal geometry, with the dicyanamido ligand in the equatorial plane. The two out‐of‐plane Cu—N bond lengths to bipyridine are 2.006 (3) and 1.998 (3) Å, whereas the in‐plane Cu—N distances are 2.142 (3) and 2.043 (3) Å to the bipyridine, and 2.015 (3) Å to the dicyanamide. 相似文献
6.
Norman Lu Wen‐Han Tu Zong‐Wei Wu Yuh‐Sheng Wen Ling‐Kang Liu 《Acta Crystallographica. Section C, Structural Chemistry》2010,66(6):o289-o291
As part of a homologous series of novel polyfluorinated bipyridyl (bpy) ligands, the title compound, C16H14F6N2O2, contains the smallest fluorinated group, viz. CF3. The molecule resides on a crystallographic inversion centre at the mid‐point of the pyridine Cipso—Cipso bond. Therefore, the bpy skeleton lies in an anti conformation to avoid repulsion between the two pyridyl N atoms. Weak intramolecular C—H...N and C—H...O interactions are observed, similar to those in related polyfluorinated bpy–metal complexes. A π–π interaction is observed between the bpy rings of adjacent molecules and this is probably a primary driving force in crystallization. Weak intermolecular C—H...N hydrogen bonding is present between one of the CF3CH2– methylene H atoms and a pyridyl N atom related by translation along the [010] direction, in addition to weak benzyl‐type C—H...F interactions to atoms of the terminal CF3 group. It is of note that the O—CH2CF3 bond is almost perpendicular to the bpy plane. 相似文献
7.
Yu‐Ling Wang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(11):m522-m524
In the title compound, {[Zn(C10H8N2)(H2O)4](C6H5O4S)2·3H2O}n, the Zn atom, the bipyridine ligand and one of water molecules are located on twofold rotation axes. The Zn atom is coordinated by four O atoms from four water molecules and two N atoms from two 4,4′‐bipyridine molecules in a distorted octahedral geometry. The Zn2+ ions are linked by the 4,4′‐bipyridine molecules to form a one‐dimensional straight chain propagating along the c axis. The 4‐hydroxybenzenesulfonate counter‐ions are bridged by the solvent water molecules through hydrogen bonds to generate a two‐dimensional layer featuring large pores. In the crystal packing, the intralayer pores form one‐dimensional channels along the c axis, in which the one‐dimensional [Zn(C10H8N2)(H2O)4]2+ chains are encapsulated. Electrostatic interactions between cations and anions and extensive hydrogen bonds result in a three‐dimensional supramolecular structure. 相似文献
8.
Huub Kooijman Frank Nijsen Anthony L. Spek Fred van het Schip 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(2):156-158
The structures of the title compounds, [Ho(C5H7O2)3(H2O)2]·H2O and [Ho(C5H7O2)3(H2O)2]·C5H8O2·2H2O, both show an eight‐coordinate holmium(III) ion in a square antiprismatic configuration. The packing of these structures consists of an infinite two‐dimensional network of hydrogen‐bonded molecules. In both structures, the same hydrogen‐bonded chain of HoIII complexes is found. 相似文献
9.
Wen‐Ge Li You‐Cai Zhang Zuo‐Wei Wang Yi‐Zhi Li He‐Gen Zheng 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(4):m159-m160
The title nest‐shaped cluster, [Cu3WIOS3(C10H8N2)2], has been synthesized by the reaction of (NH4)2[WOS3], CuI and 2,2′‐bipyridine (bipy) in dimethylformamide under a purified nitrogen atmosphere. The cluster has a neutral skeleton containing the bipy ligands, and the central W atom is tetrahedrally coordinated by three S atoms and one O atom. The three Cu atoms are divided into two different kinds. Two Cu atoms adopt distorted tetrahedral geometry, with each Cu atom coordinated by two S atoms and the two N atoms of a bipy ligand. The other Cu atom adopts a trigonal mode surrounded by two S atoms and one I atom. 相似文献
10.
Y.‐F. Liu H.‐T. Xia Shu‐Ping Yang Da‐Qi Wang 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(2):m91-m93
In the title compound, [Cu2(C19H24N2O4)2(H2O)2]·2H2O, the asymmetric unit consists of one half of the bis{μ‐6,6′‐dimethoxy‐2,2′‐[propane‐1,2‐diylbis(iminomethylene)]diphenolato}bis[aquacopper(II)] complex and two water molecules. Two CuII centres are bridged through a pair of phenolate groups, resulting in a complex with a centrosymmetric structure, with the centre of inversion at the middle of the Cu2O2 plane. The Cu atoms are in a slightly distorted square‐pyramidal coordination environment (τ = 0.07). The average equatorial Cu—O bond length and the axial Cu—O bond length are 1.928 (3) and 2.486 (3) Å, respectively. The Cu—O(water) bond length is 2.865 (4) Å, so the compound could be described as having a weakly coordinating water molecule at each CuII ion and two solvent water molecules per dimetallic unit. The Cu...Cu distance and Cu—O—Cu angle are 3.0901 (10) Å and 87.56 (10)°, respectively. The molecules are linked into a sheet by O—H...O and C—H...O hydrogen bonds parallel to the [001] plane. 相似文献
11.
John F. Bower Simon A. Cotton John Fawcett David R. Russell 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(1):e8-e9
The title compound, [Nd(bipy‐N,N′)2(NO3–O,O′)3], is found to be isomorphous with the La and Lu analogues having three bidentate nitrate and two bipyridyl ligands giving a ten co‐ordinate environment. 相似文献
12.
John A. Schlueter Russell J. Funk Urs Geiser 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):m304-m306
In the title compound, (C10H9N2)2[Pt(CN)6]·2C10H8N2 or [(Hbpy)+]2[Pt(CN)6]2−·2bpy, where bpy is 4,4′‐bipyridine, the Hbpy+ cations and bpy molecules form a hydrogen‐bonded two‐dimensional cationic approximately square grid parallel to the (110) plane. The [Pt(CN)6]2− dianions reside in the cavities within this grid, with the nitrile N atoms forming weak hydrogen bonds with the CH groups in the cationic lattice. 相似文献
13.
Benjamin J. Coe Christopher I. McDonald Simon J. Coles Michael B. Hursthouse 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):963-965
The crystal structure of the heterobimetallic title compound, [ReRuCl(C10H16As2)2(C10H8N2)2(CO)3](PF6)2·2C3H6O, is described. Both metal centres have pseudo‐octahedral coordination geometries, with a facial arrangement of the carbonyl ligands at ReI and a trans disposition of the diarsine ligands at RuII. The dihedral angle between the pyridyl rings of the 4,4′‐bipyridine bridging ligand is 13.9 (6)°. 相似文献
14.
Xu‐Cheng Fu Ming‐Tian Li Xiao‐Yan Wang Cheng‐Gang Wang Xiao‐Tao Deng 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(6):m258-m260
The title complex, [CaZn(C3H2O4)2(H2O)4]n, is a two‐dimensional polymer and consists of CaO8 and ZnO6 polyhedra linked together by malonate ligands. The CaII cation, lying on a twofold axis, is coordinated by two water molecules and six malonate O atoms. The ZnII cation, which lies on an inversion center in an octahedral environment, is coordinated by four malonate O atoms in an equatorial arrangement and two water molecules in axial positions. The Zn—O and Ca—O bond lengths are in the ranges 2.0445 (12)–2.1346 (16) and 2.3831 (13)–2.6630 (13) Å, respectively. The structure comprises alternating layers along the [101] plane, the shortest Zn⋯Zn distance being 6.8172 (8) Å. The whole three‐dimensional structure is maintained and stabilized by the presence of hydrogen bonds. 相似文献
15.
Kazumasa Honda Hiroshi Yamawaki Makoto Matsukawa Midori Goto Takehiro Matsunaga Katsutoshi Aoki Masatake Yoshida Shuzo Fujiwara 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(8):m319-m321
In the crystal structure of the title compound, [Fe(H2O)6](C6H2N3O7)2·2H2O, the centrosymmetric cationic iron complexes and picrate anions form separate stacks extending along the b axis. No picrate species ligate to the metal cation. Picrate ions are linked to one another in the stack via short intermolecular C⃛C contacts of 3.083 (4) and 3.055 (4) Å. Variable‐temperature X‐ray diffraction measurements performed between room temperature and 93 K showed a linear decrease of the lattice parameters, suggesting that there is no phase transition. 相似文献
16.
Hasan budak Ahmet Bulut Naziye etin Canan Kazak 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(1):m1-m3
The crystal structure of the first acesulfame–metal complex, namely tetraaquabis[6‐methyl‐1,2,3‐oxathiazin‐4(3H)‐onato 2,2‐dioxide‐κN]cobalt(II), [Co(C4H4NO4S)2(H2O)4], is reported. The CoII ion resides on a twofold axis and is coordinated by four aqua ligands defining the basal plane and by two monodentate acesulfamate ligands, via their ring N atoms, in the axial positions. Two intra‐ and three intermolecular hydrogen‐bonding interactions stabilize the crystal structure and form an infinite three‐dimensional lattice. 相似文献
17.
Wen‐Jie Lu Yi‐Min Zhu Kai‐Long Zhong 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(1):m4-m6
The title compound, [Mn3Fe6(C5H5)6(C6H4O2)6(C10H8N2)(H2O)2]n, consists of two crystallographically unique MnII centers. One is situated on an inversion center and is octahedrally coordinated by two N atoms from two bridging 4,4′‐bipyridine (4,4′‐bipy) ligands and four O atoms, two from different bridging ferrocenecarboxylate (μ2‐FcCOO−; Fc is ferrocene) units and two from aqua ligands. The two halves of each 4,4′‐bipy ligand are related by a center of symmetry. The second MnII center is in a strongly distorted tetragonal–pyramidal geometry, coordinated by five O atoms, three from three μ2‐FcCOO− units and two from a fourth, chelating, η2‐FcCOO− unit. The FcCOO− units function as bridging ligands to adjacent MnII centers, leading to the formation of linear ⋯Mn1Mn2Mn2Mn1⋯ chains. Adjacent chains are further bridged by 4,4′‐bipy ligands, resulting in a two‐dimensional layered polymer. 相似文献
18.
Kasper Moth‐Poulsen Jesper Bendix Peter Hammershj Thomas Bjrnholm 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(1):m14-m16
The structure of a manganese(II) complex of terpyridine functionalized with acetylsulfanyl‐terminated hexyloxy chains, [Mn(C23H25N3O2S)2](PF6)2, is described. This type of complex is of interest in the study of single‐molecule transport properties in open‐shell systems. The manganese coordination environment is distorted octahedral but, importantly, with no larger deviations from the idealized geometry than those observed for other metal–terpyridine complexes. The Mn—N bond lengths range from 2.192 (2) to 2.272 (3) Å. The title compound crystallizes with the cation and anions all on general positions, with the hexafluorophosphate anions exhibiting orientational disorder. When compared with other bis‐terpyridine complexes, this structure demonstrates that manganese(II) is no more prone to undergo low‐symmetry distortions than systems with ligand field stabilization energy contributions. 相似文献
19.
Zouaoui Setifi Fatima Setifi Habib Boughzala Adel Beghidja Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2014,70(5):465-469
In the title compound, [Fe(C10H8N2)3](C9H5N4O)2·2H2O, the chiral cations lie across twofold rotation axes in the space group C2/c. The anions and the water molecules are linked by two independent O—H...N hydrogen bonds to form C22(8) chains, and these chains are linked by the cations via C—H...N and C—H...O hydrogen bonds to form two interpenetrating three‐dimensional frameworks, each of which contains only one enantiomeric form of the chiral cation. 相似文献
20.
Tu‐Gen Xu Duan‐Jun Xu Jing‐Yun Wu Michael Y. Chiang 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(12):m615-m616
The title complex, {[Fe(C4H4O4)(H2O)4]}n, is an infinite polymeric compound bridged by the succinate dianion. Two carboxylate groups coordinate in a monodentate manner to the FeII atom, in a trans fashion, with an O—Fe—O bond angle of 175.72 (6)° and Fe—O distances of 2.0886 (14) and 2.1008 (15) Å. One of the uncoordinated carboxylate O atom forms an intramolecular hydrogen bond with a coordinated water molecule. Extensive hydrogen bonding between parallel polymeric complex chains results in a three‐dimensional supramolecular structure. 相似文献