共查询到20条相似文献,搜索用时 31 毫秒
1.
En Tang Yu‐Mei Dai Shen Lin 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(9):m433-m434
The title compound, [Zn(C8H5O4)2(C10H8N2)2], was obtained by the hydrothermal reaction of ZnSO4·7H2O with phthalic acid (H2pht) and 4,4′‐bipyridine (4,4′‐bipy). Crystallographic analysis shows that it has a one‐dimensional double‐chain structure via hydrogen‐bonding interactions. Each ZnII atom, adopting a distorted tetrahedral geometry, is coordinated by two N atoms from two 4,4′‐bipy ligands, with Zn—N distances of 2.054 (4) and 2.104 (4) Å, and by two O atoms from symmetry‐related Hpht− ligands, with Zn—O distances of 1.921 (4) and 2.019 (4) Å. 相似文献
2.
F. Bentefrit P. Lemoine D. Nguyen‐Huy G. Morgant B. Viossat 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(8):m331-m333
The asymmetric unit of the title compound, [Ni(C11H16ClN5)2]Cl2·C3H7NO, contains one monomeric nickel(II) complex cation, two Cl− anions and one dimethylformamide solvent molecule. The Ni atom is coordinated to each of two 1‐(p‐chlorophenyl)‐5‐isopropylbiguanide (proguanil) ligands via two N atoms. The complex exhibits a square‐planar coordination, with the Ni atom lying 0.021 (2) Å out of the basal plane. The crystal packing is characterized by several hydrogen bonds. 相似文献
3.
Yi‐Hang Wen Ye‐Yan Qin Jian Zhang Zhao‐Ji Li Jian‐Kai Cheng Yao Kang Yuan‐Gen Yao 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(8):m371-m372
The title compound, {[Cu(C10H8N2)(H2O)](C8H4O4)0.5·H2O}n, has been synthesized hydrothermally and characterized by single‐crystal X‐ray diffraction. The compound consists of nearly linear one‐dimensional chains of [Cu(4,4′‐bipy)(H2O)]nn+ cations (4,4′‐bipy is 4,4′‐bipyridyl), surrounded by isophthalate anions and free water molecules. Hydrogen‐bonding interactions involving cationic chains, isophthalate anions and free water molecules lead to the formation of a three‐dimensional network structure. 相似文献
4.
Yang Peng Yi‐Zhi Li Song‐Song Bao Li‐Min Zheng 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(7):m302-m304
In the title compound, [Co(C2H8N2)3]2[Ru2(C2H4O7P2)2Cl2]Cl·3H2O, the building unit contains two crystallographically independent dinuclear [Ru2(hedp)2Cl2]5− anions, where hedp [viz. (1‐hydroxyethylidene)diphosphonate] serves as a bis‐chelating bridging ligand, two types of [Co(en)3]3+ cations, one uncoordinated Cl− anion and five water molecules of crystallization. The [Ru2(hedp)2Cl2]5− anions are connected to one another, forming one‐dimensional chains along the a axis. The [Co(en)3]3+ cations are located between these chains and lie across inversion centres. An extensive series of hydrogen bonds lead to the formation of a three‐dimensional supramolecular network structure, with channels generated along the [100] direction. The uncoordinated water molecules and Cl− anions reside in these channels. 相似文献
5.
Jari T. Kovalainen Elina Wegelius Johannes A. M. Christiaans Juhani Huuskonen Jukka Gynther 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(5):e216-e217
(Cyclohexylmethyloxymethyl)(1H‐imidazol‐4‐iomethyl)‐(S)‐ammonium dichloride, C13H25N3O+·2Cl?, and (4‐bromobenzyl)(1H‐imidazol‐4‐iomethyl)‐(S)‐ammonium dichloride, C13H18BrN3O+·2Cl?, are model compounds with different biological activities for evaluation of the histamine H3‐receptor activation mechanism. Both title compounds occur in almost similar extended conformations. 相似文献
6.
Keri T. Horne Gregory L. Powell Lee M. Daniels 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(5):m292-m294
The title compound, [Re2(C7H4NS2)4Cl2]·CH2Cl2, consists of dirhenium molecules with bridging N,S‐benzothiazole‐2‐thiolate ligands, axial Cl? ligands and intramolecular hydrogen bonding. These molecules adopt somewhat staggered conformations, with a long Re—Re quadruple bond distance of 2.2716 (3) Å. 相似文献
7.
Pascale Lemoine Karima Bendada Bernard Viossat 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(10):m489-m491
The asymmetric unit of the title compound, [Zn(C7H5O3)2(C10H8N2)], contains one monomeric zinc complex. The Zn atom is coordinated to one 2,2′‐bipyridyl ligand via both N atoms and to two salicylate anions (Hsal−) in a bidentate chelating manner involving carboxylate O‐atom coordination. The complex exhibits a distorted octahedral geometry about the ZnII atom, with the `apical' positions occupied by one of the two N atoms of the bipyridyl ligand and an O atom from one Hsal− ligand; the Zn atom is 0.168 (1) Å out of the `basal' plane. Two intramolecular six‐membered hydrogen‐bonded rings are present, generated from interactions between the carboxyl and hydroxyl groups of the salicylate ligands. The crystal packing is governed by weak C—H⋯O and C—H⋯π interactions. 相似文献
8.
Hong‐Ping Xiao Xin‐Hua Li Ji‐Xin Yuan Mao‐Lin Hu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(2):m63-m64
In the title complex, [Cu2(C10H2O8)(C10H8N2)2]n, the CuII cation has a four‐coordinated environment, completed by two carboxyl O atoms belonging to two 1,2,4,5‐benzenetetracarboxylate anions (TCB4−) and two N atoms from one 2,2′‐bipyridine (2,2′‐bipy) ligand, forming a distorted square‐planar geometry. The [Cu(2,2′‐bipy)]2+ moieties are bridged by TCB4− anions, which lie about inversion centres, forming an infinite one‐dimensional coordination polymer with a double‐chain structure along the a axis. A two‐dimensional network structure is formed via a face‐to‐face π–π interaction between the 2,2′‐bipy rings belonging to two adjacent double chains, at a distance of approximately 3.56 Å. 相似文献
9.
Mao‐Lin Hu Xiao‐Qing Cai Jiu‐Xi Chen 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(9):m403-m405
In the polymeric title compound, [CuCl2(C6H6N4)]n, each CuII ion is five‐coordinated by four basal atoms (two N atoms from a 2,2′‐biimidazole molecule and two Cl− anions) and one axial Cl− anion, in a distorted square‐pyramidal coordination geometry. Cl− anions bridge the {Cu(C6H6N4)Cl} units into one‐dimensional linear chains, which are reinforced by π–π interactions. Adjacent linear chains are linked by N—H⋯Cl hydrogen bonds, resulting in a grid layer. The hydrogen‐bonding pattern can be described in graph‐set notation as C(9)R(9)R(14). This study extends our knowledge of the multifunctional properties of the 2,2′‐biimidazole ligand and of the coordination stereochemistry of copper(II). 相似文献
10.
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
11.
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
12.
Xiao‐Ping Wang Panagiotis Angaridis F. Albert Cotton Carlos A. Murillo 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(2):m71-m73
The title compound, [Ru2(C13H11N2)3(C2H3O2)(C2H3N)]BF4·0.5CH2Cl2 or [Ru2(μ‐DPhF)3(μ‐O2CMe)(MeCN)]BF4·0.5CH2Cl2, where DPhF is N,N′‐diphenylformamidinate, crystallized as dark‐blue block‐shaped crystals. In the unit cell, the diruthenium cation lies on a general position, and the BF4− anions reside on two independent special positions with crystallographic twofold symmetry. Disorder was observed for one of the phenyl groups in the formamidinate ligand, the axial acetonitrile molecule and the interstitial dichloromethane molecule. The compound, which exhibits a long Ru—Ru bond of 2.4131 (5) Å, is the first {Ru2}5+ formamidinate species that is both equatorially and axially functionalized so that it can be used as a precursor for polymeric paramagnetic supramolecular assemblies. 相似文献
13.
Kristin Kirschbaum Albert Fratini Shawn Swavey 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(5):m186-m187
The title compound, [Tb2(C24H12F9O6S3)2(C8H6N4)]·C4H8O2, has two terbium(III) centers bridged by the polyazine ligand 2,2′‐bipyrimidine (bpm), which is distorted from planarity by 7.0 (2)°. The terminal ligand 4,4,4‐trifluoro‐1‐(2‐thienyl)butane‐1,3‐dione (tta) is bidentate, coordinating through the two O atoms, while the bridging ligand is bis‐bidentate, coordinating through four equivalent N atoms. Both the complex and the ethyl acetate solvent molecules are disordered. The structure was refined as a non‐merohedral twin. 相似文献
14.
Sheng‐Run Zheng Yue‐Peng Cai Xue‐Li Zhang Cheng‐Yong Su 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(11):o642-o644
The title compound, C16H16N5+·Cl− (nbbH+·Cl−), displays N—H⋯N, N—H⋯Cl and π–π interactions in the crystal packing. The Cl− anion is chelated by the nbbH+ cation via two N—H⋯Cl hydrogen bonds. Inter‐ion N—H⋯N and N—H⋯Cl hydrogen bonds link ions related by 21 screw axes into chains along the c axis. These chains are further linked by glide‐plane operations to generate a three‐dimensional network, which is additionally stabilized by interchain π–π interactions. 相似文献
15.
Eric P. Kelson Proma P. Phengsy Atta M. Arif 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(5):517-519
The aldehyde moiety in the title complex, chloro(2‐pyridinecarboxaldehyde‐N,O)(2,2′:6′,2′′‐terpyridine‐κ3N)ruthenium(II)–chloro(2‐pyridinecarboxylic acid‐N,O)(2,2′:6′,2′′‐terpyridine‐κ3N)ruthenium(II)–perchlorate–chloroform–water (1.8/0.2/2/1/1), [RuCl(C6H5NO)(C15H11N3)]1.8[RuCl(C6H5NO2)(C15H11N3)]0.2(ClO4)2·CHCl3·H2O, is a structural model of substrate coordination to a transfer hydrogenation catalyst. The title complex features two independent RuII complex cations that display very similar distorted octahedral coordination provided by the three N atoms of the 2,2′:6′,2′′‐terpyridine ligand, the N and O atoms of the 2‐pyridinecarboxaldehyde (pyCHO) ligand and a chloride ligand. One of the cation sites is disordered such that the aldehyde group is replaced by a 20 (1)% contribution from a carboxylic acid group (aldehyde H replaced by carboxyl O—H). Notable dimensions in the non‐disordered complex cation are Ru—N 2.034 (2) Å and Ru—O 2.079 (2) Å to the pyCHO ligand and O—C 1.239 (4) Å for the pyCHO carbonyl group. 相似文献
16.
Uwe‐Christoph Knig Michael Berkei Claudia Hirsch Hans Preut Terence Nigel Mitchell 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):e450-e451
The synthesis and the X‐ray structural analysis of the title compound, μ‐chloro‐1:2κ2Cl‐trichloro‐1κCl,2κ2Cl‐tetramethyl‐1κ2C,2κ2C‐(N‐methylpyrrolidin‐2‐one)‐1κO‐ditin(IV), [Sn2Cl4(CH3)4(C5H9NO)], are described. The title compound is found to exhibit a distorted trigonal–bipyramidal geometry at both SnIV atoms. The Sn—Cl—Sn angle involving the bridging chlorine ligand is 135.56 (5)°, with the Sn—Cl bond lengths being 2.5704 (13) and 3.1159 (13) Å. 相似文献
17.
Hans‐Ruedi Mürner Rosario Scopelliti Jean‐Claude G. Bünzli 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(8):m434-m435
In the title compound, [TbCl(C27H35N3)2(H2O)](ClO4)2·2C2H6O, the TbIII ion has a coordination number of eight, composed of two tridentate substituted‐terpyridine ligands, a water molecule and a bound Cl? anion. The first coordination shell can be described as a distorted bicapped trigonal prism. The dihedral angles between pyridine rings belonging to the same tpy ligand range from 5.2 (5) to 16.8 (5)°. 相似文献
18.
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
19.
Li‐Fang Zhang Zhong‐Hai Ni Zhi‐Min Zong Xian‐Yong Wei Chun‐Hua Ge Hui‐Zhong Kou 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(12):m542-m544
In the title one‐dimensional complex, {[MnIII(C9H10NO2)2]Cl}n, the Schiff base ligand 2‐[(2‐hydroxyethyl)iminomethyl]phenolate (Hsae−) functions as both a bridging and a chelating ligand. The MnIII ion is six‐coordinated by two N and four O atoms from four different Hsae− ligands, yielding a distorted MnO4N2 octahedral environment. Each [MnIII(Hsae)2]+ cationic unit has the Mn atom on an inversion centre and each [MnIII(Hsae)2]+ cation lies about another inversion centre. The chain‐like complex is further extended into a three‐dimensional network structure through Cl⋯H—O hydrogen bonds and C—H⋯π contacts involving the Hsae− rings. 相似文献
20.
Alan R. Kennedy Fraser R. N. Waterson 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(11):o613-o615
The dichloromethane disolvate of 4,4′‐(azinodimethylene)dipyridinium chloranilate, C12H12N42+·C6Cl2O42−·2CH2Cl2, consists of one‐dimensional hydrogen‐bonded molecular tapes that propagate along the [10] direction. Both cations and anions lie across centres of inversion. The molecular tapes are planar but do not stack in the expected segregated manner, instead having chloranilate anions sandwiched between azine groups. 相似文献