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1.
The title complex, [Ag4(C7H5O3)2(C8H6N2)4(C7H6O3)4], lies about an inversion centre and has a unique tetranuclear structure consisting of four AgI atoms bridged by four N atoms from two 1,8‐naphthyridine (napy) ligands to form an N:N′‐bridge and four O atoms from two salicylate (SA) ligands to form an O:O′‐bridge. The Ag atoms have distorted octahedral coordination geometry. The centrosymmetric Ag4 ring has Ag—Ag separations of 2.772 (2) and 3.127 (2) Å, and Ag—Ag—Ag angles of 107.70 (4) and 72.30 (4)°. All SA hydroxy groups take part in intramolecular O—H⋯O hydrogen bonding. In the crystal packing, the napy rings are oriented parallel and overlap one another. These π–π interactions, together with weak intermolecular C—H⋯O contacts, stabilize the crystal structure. 相似文献
2.
Yan Zheng 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(10):m471-m472
In the title complex, [Ag(NO3)(C14H14N4S4)]n, the AgI atom lies on a twofold axis and shows a distorted tetrahedral coordination, comprised of two N‐atom donors from two thiadiazole groups of separate ligands and two O‐atom donors from one nitrate ligand. Each bis(thioether) ligand also lies on a twofold axis and bridges two adjacent Ag atoms to form an infinite chain along the c axis, with an Ag⋯Ag separation of 11.462 (4) Å. Adjacent one‐dimensional chains are further linked into double‐chain motifs through weak Ag⋯S and π–π stacking interactions. 相似文献
3.
Wei Sun Yan‐Tuan Li Zhi‐Yong Wu 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(4):m177-m180
The title compound, [Co(C4H4O5)(C6H6N4S2)(H2O)]·3H2O, displays a distorted octahedral coordination geometry. The tridentate oxydiacetate dianion chelates the CuII atom in the meridional mode. In the crystal packing, hydrophilic and hydrophobic layers are arranged in an alternating manner. In addition, a three‐dimensional hydrogen‐bonding framework and π–π stacking are present. 相似文献
4.
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
5.
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
6.
Lesaw Siero Maria Bukowska‐Strzyewska 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(1):19-21
In the title dimeric complex, [Cu2(C4H4O4)2(C7H6N2S)4], which possesses a centre of symmetry, the Cu atoms are enclosed in a 14‐membered ring. They adopt a distorted square‐bipyramidal (4+2) coordination. The four closest donor atoms are two N atoms of 2‐aminobenzothiazole ligands and two O atoms of the succinate carboxylate groups. They form a square‐planar cis arrangement, with an average Cu—N distance of 2.003 (3) Å and Cu—O distances of 1.949 (3) and 1.965 (3) Å. Two longer Cu—O bonds of 2.709 (3) and 2.613 (3) Å involving the remaining O atoms of the carboxylate groups complete the sixfold coordination of the Cu atoms. The H atoms of each amino group of the 2‐aminobenzothiazole molecules form intra‐ and intermolecular N—H?O hydrogen bonds. A nearly perpendicular intermolecular C—H?Cg interaction (Cg is the centroid of the imidazole ring) is observed. The intramolecular Cu?Cu distance is 6.384 (2) Å. 相似文献
7.
Zhi‐Yong Wu Duan‐Jun Xu Yue Luo Jing‐Yun Wu Michael Y. Chiang 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(8):m307-m309
The title compound, [Cu(C4H4O5)(C6H6N4S2)]·H2O, displays a square‐pyramidal coordination geometry. The tridentate oxydiacetate dianion chelates the CuII atom in the facial mode. The large difference [0.487 (4) Å] between the longest Cu—O distance in the basal plane and that in the apical direction correlates with the small displacement of the CuII atom [0.0576 (13) Å] from the basal plane towards the apex of the square pyramid. The intermolecular hydrogen‐bonding network results in a closely overlapped arrangement of the coordination basal plane and the thiazole ring of a neighboring molecule. 相似文献
8.
Xi‐Rui Zeng Yan Xu Ren‐Geng Xiong Li‐Juan Zhang Xiao‐Zeng You 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):e325-e326
The title complex, [Eu(C6H4O2)3(H2O)2], has a double carboxylate‐bridged infinite‐chain structure, with one chelating carboxylate group on each Eu ion centre, which also binds to two water molecules to yield an eight‐coordinate square‐antiprismatic geometry, with Eu—O bond lengths in the range 2.338 (3)–2.594 (3) Å. The pyridine N atoms of the isonicotinate groups do not coordinate to the Eu ions; instead, they direct the formation of EuIII coordination polymers via hydrogen bonding with coordinated water molecules. 相似文献
9.
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
10.
Hong Li Kai‐Liang Yin Duan‐Jun Xu 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(1):m19-m21
The title compound, [Cu(C7H5O3)2(C7H6N2)2]n, is a one‐dimensional polymeric complex bridged by salicylate anions. The CuII atom is surrounded by three salicylate and two benzimidazole ligands, with a tetragonally elongated octahedral coordination geometry. The Cu—O bond distances in the axial directions are 2.6092 (16) and 2.6834 (17) Å. π–π stacking interactions exist between the benzimidazole rings of neighboring polymeric complex chains. 相似文献
11.
ubica Tri
íkov Ivan Poto
k Christoph Wagner 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(4):m246-m248
The structure of the title compound, [Cu(C6H7N)2{Ag(CN)2}2]n, is made up of neutral zigzag chains of [–NC–Ag–CN–Cu(4‐Mepy)2{Ag(CN)2}–NC–Ag–CN–] (4‐Mepy is 4‐methylpyridine). Neighbouring chains are linked by weak argentophilic interactions, with Ag?Ag distances of 3.2322 (12) Å. The Cu atom, which lies on a twofold rotation axis, is pentacoordinated by one monodentate Ag(CN)2? anion [Cu—N 1.985 (3) Å], the atoms of which lie on the same rotation axis, and by bridging dicyanoargentate anions [2 × Cu—N 2.0827 (19) Å], with Ag atoms on inversion centres. The coordination polyhedron is completed by two 4‐Mepy molecules [2 × Cu—N 2.038 (2) Å], which occupy the axial positions of a distorted trigonal bipyramid. 相似文献
12.
Katarzyna
lepokura Tadeusz Lis Magorzata Bogucka Joanna Lutomska Adam Kraszewski Krzysztof Sierosawski 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(7):o405-o409
The crystal structures of triethylammonium adenosine cyclic 2′,3′‐phosphate {systematic name: triethylammonium 4‐(6‐aminopurin‐9‐yl)‐6‐hydroxymethyl‐2‐oxido‐2‐oxoperhydrofurano[3,4‐c][1,3,2]dioxaphosphole}, Et3NH(2′,3′‐cAMP) or C6H16N+·C10H11N5O6P−, (I), and guanosine cyclic 2′,3′‐phosphate monohydrate {systematic name: triethylammonium 6‐hydroxymethyl‐2‐oxido‐2‐oxo‐4‐(6‐oxo‐1,6‐dihydropurin‐9‐yl)perhydrofurano[3,4‐c][1,3,2]dioxaphosphole monohydrate}, [Et3NH(2′,3′‐cGMP)]·H2O or C6H16N+·C10H11N5O7P−·H2O, (II), reveal different nucleobase orientations, viz. anti in (I) and syn in (II). These are stabilized by different inter‐ and intramolecular hydrogen bonds. The structures also exhibit different ribose ring puckering [4E in (I) and 3T2 in (II)] and slightly different 1,3,2‐dioxaphospholane ring conformations, viz. envelope in (I) and puckered in (II). Infinite ribbons of 2′,3′‐cAMP− and helical chains of 2′,3′‐cGMP− ions, both formed by O—H⋯O, N—H⋯X and C—H⋯X (X = O or N) hydrogen‐bond contacts, characterize (I) and (II), respectively. 相似文献
13.
In catena‐poly[[(di‐2‐pyridylamine‐κ2N,N′)silver(I)]‐μ‐nicotinato‐κ2N:O], [Ag(C6H4NO2)(C10H9N3)]n, the AgI atom is tetracoordinated by two N atoms from the di‐2‐pyridylamine (BPA) ligand [Ag—N = 2.3785 (18) and 2.3298 (18) Å] and by one N atom and one carboxylate O atom from nicotinate ligands [Ag—N = 2.2827 (15) Å and Ag—O = 2.3636 (14) Å]. Bridging by nicotinate N and O atoms generates a polymeric chain structure, which extends along [100]. The carboxyl O atom not bonded to the Ag atom takes part in an intrachain C—H⋯O hydrogen bond, further stabilizing the chain. Pairs of chains are linked by N—H⋯O hydrogen bonds to generate ribbons. There are no π–π interactions in this complex. In catena‐poly[[(di‐2‐pyridylamine‐κ2N,N′)silver(I)]‐μ‐2,6‐dihydroxybenzoato‐κ2O1:O2], [Ag(C7H5O4)(C10H9N3)]n, the AgI atom has a distorted tetrahedral coordination, with three strong bonds to two pyridine N atoms from the BPA ligand [Ag—N = 2.286 (5) and 2.320 (5) Å] and to one carboxylate O atom from the 2,6‐dihydroxybenzoate ligand [Ag—O = 2.222 (4) Å]; the fourth, weaker, Ag‐atom coordination is to one of the phenol O atoms [Ag⋯O = 2.703 (4) Å] of an adjacent moiety, and this interaction generates a polymeric chain along [100]. Pairs of chains are linked about inversion centers by N—H⋯O hydrogen bonds to form ribbons, within which there are π–π interactions. The ribbons are linked about inversion centers by pairs of C—H⋯O hydrogen bonds and additional π–π interactions between inversion‐related pairs of 2,6‐dihydroxybenzoate ligands to generate a three‐dimensional network. 相似文献
14.
Zhong‐Lu You Hai‐Liang Zhu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(11):m567-m568
The title complex, [Ag2(C7H5O2)2(C18H18F2N2)]n, is a dinuclear silver(I) compound with one inversion centre between pairs of Ag atoms and another at the mid‐point of the central C—C bond in the butane‐1,4‐diamine moiety. Each of the smallest repeat units consists of two silver(I) cations, two benzoate anions and one N,N′‐bis(2‐fluorobenzylidene)butane‐1,4‐diamine Schiff base ligand. Each AgI ion is three‐coordinated in a trigonal configuration by two O atoms from two benzoate anions and one N atom from a Schiff base ligand. The di‐μ‐benzoato‐disilver(I) moieties are linked by the bridging Schiff base ligand, giving zigzag polymeric chains with an [–Ag⋯Ag—N—C—C—C—C—N–]n backbone running along the b axis. 相似文献
15.
Qi‐Wei Zhang Yi‐Hang Wen Yun‐Long Feng 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(6):m255-m257
The title compound, [Zn2(C5H6O4)2(C13H14N2)]n or [Zn2(glu)2(bpp)]n, is a novel zinc polymer based on mixed flexible glutarate (glu) and 1,3‐di‐4‐pyridylpropane (bpp) ligands. The ZnII center has a distorted tetrahedral geometry and the central atom of the bpp ligand is located at a special site with a C2 axis passing through it. A layer is formed by Zn–glu bonding. Such layers are pillared by bpp ligands, forming a three‐dimensional framework with large channels. The inverted interpenetration of two three‐dimensional frameworks completes the molecular structure. 相似文献
16.
En Tang Zhao‐Ji Li Yu‐Mei Dai Yuan‐Gen Yao 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(2):m61-m63
The title compound, [CoII(C10H8O6)(C10H8N2)(H2O)2]n, was obtained by the hydrothermal reaction of CoSO4 with benzene‐1,4‐dioxydiacetate [systematic name: p‐phenylenebis(oxyacetate)] and 4,4′‐bipyridine (4,4′‐bpy). The Co atom lies at an inversion center and the benzene‐1,4‐dioxydiacetate and 4,4′‐bipyridine moieties lie about other inversion centers. The benzene‐1,4‐dioxydiacetate ligands bridge the octahedral CoII coordination centers, forming a one‐dimensional zigzag chain. The chains are further bridged by 4,4′‐bpy ligands, forming a novel two‐dimensional supramolecular architecture. Hydrogen‐bonding interactions between the coordinated water molecules and the carboxylate O atoms lead to the formation of a three‐dimensional network structure. 相似文献
17.
Soo‐Gyun Roh Jong Hwa Jeong 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(4):e120-e121
In the title compound, [{η5‐CpCo[P(O)(OMe)2]3}Nd(O2CCH3)2]2, with a centrosymmetric molecule, each Nd atom has an eight‐coordination environment, surrounded by a tripodal {LOMe = CpCo[P(O)(OMe)2]3} and four bridging acetato ligands. The coordination geometry around each Nd centre is described as a distorted square‐antiprism and the two different types of acetato ligands have μ‐O:O′‐ and μ‐O,O′:O′‐acetato coordination modes. The Nd—O distances are in the range 2.378 (4)–2.594 (5) Å and the Nd?Nd distance is 3.9913 (6) Å. 相似文献
18.
Zun‐Ting Zhang Xin‐Li Cheng Yun He 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(10):m484-m487
In methylaminium 4′,7‐dihydroxyisoflavone‐3′‐sulfonate dihydrate, CH6N+·C15H9O7S−·2H2O, 11 hydrogen bonds exist between the methylaminium cations, the isoflavone‐3′‐sulfonate anions and the solvent water molecules. In hexaaquairon(II) bis(4′,7‐diethoxyisoflavone‐3′‐sulfonate) tetrahydrate, [Fe(H2O)6](C19H17O7S)2·4H2O, 12 hydrogen bonds exist between the centrosymmetric [Fe(H2O)6]2+ cation, the isoflavone‐3′‐sulfonate anions and the solvent water molecules. Additional π–π stacking interactions generate three‐dimensional supramolecular structures in both compounds. 相似文献
19.
Ming‐Liang Tong Xiao‐Ming Chen Seik Weng Ng 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(9):m481-m482
In the title compound {alternative name: poly[silver(I)‐μ‐(3‐amino‐2‐chloropyridine)‐μ‐nitrato]}, [Ag(NO3)(C5H5ClN2)]n the AgI atom is in an irregular AgN2O3 geometry, surrounded by one pyridyl N atom [Ag—N 2.283 (5) Å], one amine N atom [Ag—N 2.364 (6) Å] and three O atoms from different nitrate ions [Ag—O 2.510 (6)–2.707 (6) Å]. The Ag ions are bridged by the 3‐amino‐2‐chloropyridine ligands into helical chains. Adjacent uniform chiral chains are further interlinked through the NO3 bridges into an interesting two‐dimensional coordination network in the solid. 相似文献
20.
Tadeusz Lis Petra Stachov Duan Valigura Jan Moncol 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(8):m375-m377
The title compound {systematic name: tetrakis(μ‐3,5‐dinitrobenzoato‐κ2O:O′)bis[(3,7‐dihydro‐1,3,7‐trimethyl‐1H‐purine‐2,6‐dione‐κO2)copper(II)]}, [Cu2(C7H3N2O6)4(C8H10N4O2)2], consists of paddle‐wheel dimeric tetrakis(μ‐3,5‐dinitrobenzoato‐κ2O:O′)dicopper(II) units with O‐coordinated caffeine molecules in both apical positions. The entire dimeric molecule lies on a tetragonal inversion axis, and thus one nitrobenzoate anion with one Cu atom in a special position belong to the independent part of the molecule. The caffeine ligand bonded to the Cu atom is disordered on a local twofold non‐crystallographic axis coincident with the axis. A π–π stacking interaction is observed between the caffeine rings and adjacent symmetry‐related benzene rings of the 3,5‐dinitrobenzoate anions. 相似文献