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1.
Ricardo Baggio Mireille Perec Maria Teresa Garland 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(3):312-315
Two new complexes of the Ln2(oda)3·nH2O (oda =–O2CCH2OCH2CO2–) series are reported, i.e. {[Pr2(C4H4O5)3(H2O)3]·5H2O}n and {[Nd2(C4H4O5)3(H2O)6]·C4H6O5·‐2H2O}n. The former is isostructural with the reported La analogue, while the latter is a new structural variety within the series. Each compound exhibits two independent nine‐coordinated Ln centres showing a variety of coordination geometries. 相似文献
2.
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
3.
Meng Wen Zu‐Ping Xiao Chun‐Ya Wang Xi‐He Huang 《Acta Crystallographica. Section C, Structural Chemistry》2015,71(2):136-139
The title compound, {[Zn4(C8H4O4)3(OH)2(C12H6N2O2)2]·2H2O}n, has been prepared hydrothermally by the reaction of Zn(NO3)2·6H2O with benzene‐1,4‐dicarboxylic acid (H2bdc) and 1,10‐phenanthroline‐5,6‐dione (pdon) in H2O. In the crystal structure, a tetranuclear Zn4(OH)2 fragment is located on a crystallographic inversion centre which relates two subunits, each containing a [ZnN2O4] octahedron and a [ZnO4] tetrahedron bridged by a μ3‐OH group. The pdon ligand chelates to zinc through its two N atoms to form part of the [ZnN2O4] octahedron. The two crystallographically independent bdc2− ligands are fully deprotonated and adopt μ3‐κO:κO′:κO′′ and μ4‐κO:κO′:κO′′:κO′′′ coordination modes, bridging three or four ZnII cations, respectively, from two Zn4(OH)2 units. The Zn4(OH)2 fragment connects six neighbouring tetranuclear units through four μ3‐bdc2− and two μ4‐bdc2− ligands, forming a three‐dimensional framework with uninodal 6‐connected α‐Po topology, in which the tetranuclear Zn4(OH)2 units are considered as 6‐connected nodes and the bdc2− ligands act as linkers. The uncoordinated water molecules are located on opposite sides of the Zn4(OH)2 unit and are connected to it through hydrogen‐bonding interactions involving hydroxide and carboxylate groups. The structure is further stabilized by extensive π–π interactions between the pdon and μ4‐bdc2− ligands. 相似文献
4.
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
5.
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
6.
Masoud Mirzaei Hossein Eshtiagh‐Hosseini Zahra Karrabi Behrouz Notash 《Acta Crystallographica. Section C, Structural Chemistry》2013,69(10):1140-1143
4‐Hydroxypyridine‐2,6‐dicarboxylic acid (chelidamic acid, hypydc[H]H2) reacts with MnCl2·2H2O in the presence of piperazine in water to afford the title complex, {[Mn3(C7H2NO5)2(H2O)8]·3H2O}n or {[Mn3(hypydc)2(H2O)8]·3H2O}n. This compound is a one‐dimensional coordination polymer, with the twofold symmetric repeat unit containing three metal centres. Two different coordination geometries are observed for the two independent MnII metal centres, viz. a distorted pentagonal bipyramid and a distorted octahedron. The 4‐oxidopyridine‐2,6‐dicarboxylate anions and two of the water molecules act as bridging ligands. The zigzag‐like geometry of the coordination polymer is stabilized by hydrogen bonds. O—H...O and C—H...O hydrogen bonds and water clusters consolidate the three‐dimensional network structure. 相似文献
7.
Viktor A. Tafeenko Vladimir V. Chernyshev 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):m298-m300
The coordination of the 3‐cyano‐4‐dicyanomethylene‐5‐oxo‐4,5‐dihydro‐1H‐pyrrol‐2‐olate anion to ZnII, the apical sites of which are occupied by two water molecules, results in the formation of two‐dimensional layers of the title coordination polymer, {[Zn(C8HN4O2)2(H2O)2]·2H2O}n, in which the ZnII cations lie on inversion centres in space group C2/c, with water ligands in the apical sites of octahedral geometry. Hydrogen bonds between coordinated and lattice water molecules, and π–π stacking interactions between the anions link adjacent layers into a continuous framework. 相似文献
8.
Mao‐Lin Hu Qian Miao Qian Shi Ming‐De Ye 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(9):m460-m464
In the two related polymeric title compounds, {[La2(sip)2(phen)2(H2O)3]·H2O}n [sip is the 5‐sulfonatoisophthalate trianion (C8H3O7S3−) and phen is 1,10‐phenanthroline (C12H8N2)], (I), and {[La(sip)(H2O)3]·H2O}n, (II), the lanthanum(III) ions are nine‐coordinate, with similar distorted monocapped square‐antiprism coordination geometry. The two crystal structures are very different. In (I), the sip anion acts as a pentadentate ligand, one of the coordinated water molecules lies on a twofold axis and further inversion, n‐glide and translation operations generate a two‐dimensional framework. In (II), the sip anion functions as a hexadentate ligand and a three‐dimensional network with trinuclear 24‐membered rings is developed via inversion, n‐glide, twofold‐screw and translation operations. Both structures also have extensive O—H⋯O hydrogen‐bonded networks and π–π interactions. 相似文献
9.
Shu‐Mei Chen Can‐Zhong Lu Ya‐Qin Yu Quan‐Zheng Zhang Xiang He 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(9):m437-m439
A novel chain molybdenum compound, {[Mo2O6(C6H5NO2)]·H2O}n, which was synthesized under hydrothermal conditions, consists of an infinite rail‐like chain formed by molybdenum oxide units linked by zwitterionic nicotinic acid ligands. Each Mo atom is coordinated octahedrally by six O atoms and the MoO6 octahedra are linked to one another via edge‐sharing to produce a zigzag polymeric chain, with nicotinic acid ligands located, alternately, on each side of the rail‐like chain plane. 相似文献
10.
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
11.
Ricardo Baggio Mireille Perec Maria Teresa Garland 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(5):m175-m177
A polymeric heterometallic compound, {[Gd2Zn3(C4H4O5)6(H2O)6]·12H2O}n, comprising zinc(II) and gadolinium(III) cations bridged by carboxylate groups from oxydiacetate ligands, is presented. The GdIII cations lie at sites with crystallographic 32 symmetry and display a tricapped trigonal‐prism arrangement, which is defined by six carboxyl and three ether O atoms. The ZnII cations lie at sites with imposed 2/m symmetry and are octahedrally coordinated by four carboxyl O atoms and two apical water ligands, which form strong intramolecular hydrogen bonds. Comparison is made with the previously reported isostructural homologous copper–gadolinium complex. 相似文献
12.
You‐Ren Dong Xian‐Wen Wang Yue‐Qing Zheng 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(1):m19-m21
In the title novel mixed‐valence copper complex, {[Cu2(C8H2NO6)(C10H8N2)]·H2O}n, the CuI and CuII ions are linked by 4,4′‐bipyridine (bpy) and pyridine‐2,4,6‐tricarboxylate (ptc) ligands into corrugated layers, which are assembled via interlayer C—H⋯O hydrogen bonds to give a three‐dimensional supramolecular architecture. 相似文献
13.
E. Yang Jian Zhang Yi‐Hang Wen Yu‐Biao Chen Yao Kang Zhao‐Ji Li Yuan‐Gen Yao 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(6):m280-m282
The hydrothermal reaction of an aqueous solution of Cu(CH3COO)2·H2O, 1,2,4,5‐benzenetetracarboxylic acid and 4,4′‐bipyridine gave rise to the interesting title three‐dimensional polymer {[Cu6(btec)3(4,4′‐bpy)3(H2O)2]·2H2O}n (btec is 1,2,4,5‐benzenetetracarboxylate, C10H2O84−, and 4,4′‐bpy is 4,4′‐bipyridine, C10H8N2), in which each btec ligand links six copper(II) cations into a lamellar [Cu6(btec)3(H2O)2]n subpolymer framework. There are two distinct diamine units and two distinct carboxylate units, with one of each lying across an inversion centre. 相似文献
14.
Hong‐Yu Chen Qi Fang Gang Xue Wen‐Tao Yu 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(12):m535-m537
In the title compound, {[K2Ni(C5O5)2(H2O)2]·4H2O}n, the Ni atom lies on an inversion centre. Two inversion‐related croconate [4,5‐dihydroxy‐4‐cyclopentene‐1,2,3‐trionate(2−)] ligands and an NiII ion form a near‐planar symmetrical [Ni(C5O5)2]2− moiety. The near‐square coordination centre of the moiety is then extended to an octahedral core by vertically bonding two water molecules in the [Ni(C5O5)2(H2O)2]2− coordination anion. The crystal structure is characterized by a three‐dimensional network, involving strong K⋯O⋯K binding, K⋯O—Ni binding and hydrogen bonding. 相似文献
15.
Olga M. Nazarenko Eduard B. Rusanov Alexander N. Chernega Konstantin V. Domasevitch 《Acta Crystallographica. Section C, Structural Chemistry》2013,69(3):232-236
In poly[[bis(μ‐4,4′‐bi‐1H‐pyrazole‐κ2N2:N2′)bis(3‐carboxyadamantane‐1‐carboxylato‐κO1)cobalt(II)] dihydrate], {[Co(C12H15O4)2(C6H6N4)2]·2H2O}n, (I), the Co2+ cation lies on an inversion centre and the 4,4′‐bipyrazole (4,4′‐bpz) ligands are also situated across centres of inversion. In its non‐isomorphous cadmium analogue, {[Cd(C12H15O4)2(C6H6N4)2]·2H2O}n, (II), the Cd2+ cation lies on a twofold axis. In both compounds, the metal cations adopt an octahedral coordination, with four pyrazole N atoms in the equatorial plane [Co—N = 2.156 (2) and 2.162 (2) Å; Cd—N = 2.298 (2) and 2.321 (2) Å] and two axial carboxylate O atoms [Co—O = 2.1547 (18) Å and Cd—O = 2.347 (2) Å]. In both structures, interligand hydrogen bonding [N...O = 2.682 (3)–2.819 (3) Å] is essential for stabilization of the MN4O2 environment with its unusually high (for bulky adamantanecarboxylates) number of coordinated N‐donor co‐ligands. The compounds adopt two‐dimensional coordination connectivities and exist as square‐grid [M(4,4′‐bpz)2]n networks accommodating monodentate carboxylate ligands. The interlayer linkage is provided by hydrogen bonds from the carboxylic acid groups via the solvent water molecules [O...O = 2.565 (3) and 2.616 (3) Å] to the carboxylate groups in the next layer [O...O = 2.717 (3)–2.841 (3) Å], thereby extending the structures in the third dimension. 相似文献
16.
Ming‐Liang Tong Shao‐Liang Zheng Xiao‐Ming Chen 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):960-962
The title compound, poly[[diaquadibromocadmium‐μ‐(1,3,5,7‐tetraazatricyclo[3.3.1.13,7]decane‐N1:N5)‐aquacadmium‐di‐μ‐bromo‐aquacadmium‐μ‐(1,3,5,7‐tetraazatricyclo[3.3.1.13,7]decane‐N1:N5)‐di‐μ‐bromo] dihydrate], [Cd3Br6(C6H12N4)2(H2O)4]·2H2O, is made up of two‐dimensional neutral rectangular coordination layers. Each rectangular subunit is enclosed by a pair of Cd3(μ2‐Br)6(H2O)3 fragments and a pair of (μ2‐hmt)Cd(H2O)2Br2(μ2‐hmt) fragments as sides (hmt is hexamethylenetetramine). The unique CdII atom in the Cd2Br2 ring in the Cd3(μ2‐Br)6(H2O)3 fragment is in a slightly distorted octahedral CdNOBr4 geometry, surrounded by one hmt ligand [2.433 (5) Å], one aqua ligand [2.273 (4) Å] and four Br atoms [2.6409 (11)–3.0270 (14) Å]. The CdII atom in the (μ2‐hmt)Cd(H2O)2Br2(μ2‐hmt) fragment lies on an inversion center and is in a highly distorted octahedral CdN2O2Br2 geometry, surrounded by two trans‐related N atoms of two hmt ligands [2.479 (5) Å], two trans‐related aqua ligands [2.294 (4) Å] and two trans‐related Br atoms [2.6755 (12) Å]. Adjacent two‐dimensional coordination sheets are connected into a three‐dimensional network by hydrogen bonds involving lattice water molecules, and the aqua, bromo and hmt ligands belonging to different layers. 相似文献
17.
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
18.
Ming‐Lin Guo Chen‐Hu Guo 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(10):m342-m344
In the title complex, {[Cd2(C8H3NO6)2(C4H10N2)(H2O)4]·2H2O}n, the CdII atoms show distorted octahedral coordination. The two carboxylate groups of the dianionic 2‐nitroterephthalate ligand adopt monodentate and 1,2‐bridging modes. The piperazine molecule is in a chair conformation and lies on a crystallographic inversion centre. The CdII atoms are connected via three O atoms from two carboxylate groups and two N atoms from piperazine molecules to form a two‐dimensional macro‐ring layer structure. These layers are further aggregated to form a three‐dimensional structure via rich intra‐ and interlayer hydrogen‐bonding networks. This study illustrates that, by using the labile CdII salt and a combination of 2‐nitroterephthalate and piperazine as ligands, it is possible to generate interesting metal–organic frameworks with rich intra‐ and interlayer O—H...O hydrogen‐bonding networks. 相似文献
19.
E. Yang Zhao‐Ji Li Jian Zhang Yu‐Biao Chen Yuan‐Gen Yao 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(9):m457-m459
The reaction of cadmium chloride with pyridine‐2,6‐dicarboxylic acid (PDA) and 98% H2SO4 in ethanol led to the formation of the title compound, bis[μ‐6‐(ethoxycarbonyl)pyridine‐2‐carboxylato]‐1:2κ4O6,N,O2:O2;1:2κ4O2:O2,N,O6‐bis[diaquachlorocadmium(II)] dihydrate, [Cd2(C9H8NO4)2Cl2(H2O)4]·2H2O. PDA is esterified to monoethyl pyridine‐2,6‐dicarboxylate (MEPD) by the catalysis of H2SO4 during the reaction. The dinuclear CdII complex lies about an inversion centre and the unique Cd atom has a pentagonal–bipyramidal geometry. The two Cd atoms are bridged by two carboxylate O atoms, forming a planar Cd2O2 unit. Stair‐like chains are formed via O—H⋯Cl hydrogen bonds and these are further arranged into two‐dimensional layers via hydrogen bonds involving solvate water molecules. 相似文献
20.
Qin‐Qin Zhou Lei Jin Wei‐Qiang Liao Yi Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2013,69(3):237-240
The title compound, {[Cd3(C6H13N2)2Cl8]·2H2O}n, consists of pendant protonated cationic diamine ligands bonded to an anionic one‐dimensional coordination polymer chloridocadmate scaffold. Each coordination chain features two kinds of CdII centre, each with distorted octahedral coordination geometry. One CdII cation lies on a centre of inversion and is coordinated by six bridging chloride ligands, while the other is coordinated by four bridging chloride ligands, one terminal chloride ligand and a 1‐aza‐4‐azoniabicyclo[2.2.2]octane aza N atom. This gives a reversible corner‐sharing half‐cubic linear polymer that lies along the crystallographic a direction. The chains interact through hydrogen bonding with solvent water, with each water molecule accepting one N—H...O interaction from a cation and donating to two O—H...Cl interactions with anionic chains, thus linking three separate chains and completing the packing structure. 相似文献