共查询到20条相似文献,搜索用时 15 毫秒
1.
Emi Yamamoto Kanji Kubo Nobuo Kato Akira Mori 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(8):e329-e330
In the title complex, [Ba2(NCS)4(C17H25NO5)2], each Ba2+ cation is coordinated by one N atom, four O atoms of the macrocyclic unit, two N atoms of thiocyanate unit and one O atom from each of the tropone units. 相似文献
2.
Andrey I. Buvaylo Nikolay M. Dudarenko Igor O. Fritsky Jolanta
witek‐Kozowska 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(8):m331-m333
The title compound, [Ni(C2H8N2)3][Ni(C3HN3O2)2]·H2O, appears to be a modular associate consisting of two complex counter‐ions, containing bivalent nickel as the central atom in both cases, and a solvent water molecule. The NiII ion in the complex cation lies on the C2 crystallographic axis. Its coordination environment is formed by six N atoms of three ethylenediamine (en) molecules, representing a distorted octahedral geometry. The NiII ion in the complex anion occupies a position at the center of inversion. It exhibits a distorted square‐planar coordination geometry formed by four N atoms belonging to the deprotonated oxidoimine and amide groups of the two doubly charged 2‐cyano‐2‐(oxidoimino)acetamidate anions, situated in trans positions with respect to each other. In the crystal packing, the complex anions are linked by water molecules via hydrogen bonds between the amide O atoms and water H atoms, forming chains translated along the a direction. The [Ni(en)3]2+ cations fill empty spaces between the translational chains, connecting them by hydrogen bonds between the oxime and amide O atoms of the anions and the amine H atoms of the cations, forming layers along the ac plane. The water molecules provide connection between layers through N atoms of the cations, thus forming a three‐dimensional modular structure. 相似文献
3.
Kenneth W. Muir David G. Morris Karl S. Ryder Anastassios Varvoglis 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(7):o376-o377
The title disulfonyl‐stabilized pyridinium ylide, C5H5N+–C−(SO2C6H5)2 or C18H15NO4S2, contains a near planar NCS2 core. The structure suggests that the formal negative charge of the ylide C atom is delocalized to the S atoms rather than the N atom. Structural features of pyridinium ylides are briefly discussed. 相似文献
4.
Takayoshi Suzuki 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(4):e118-e119
The title compound [Co(C5H7O2)2(C13H13P)(CH4O)]PF6·H2O, (I), which was converted from trans‐[Co(acac)2(PMePh2)(H2O)]PF6 (acac is pentane‐2,4‐dionato) by recrystallization from aqueous methanol, has been confirmed as have a coordinated methanol ligand. The molecular structure of the complex cation, trans‐[Co(acac)2(PMePh2)(MeOH)]+, is similar to that of the above aqua complex found in the ClO4 salt [Kashiwabara et al. (1995). Bull. Chem. Soc. Jpn, 68 , 883–888]. The Co—O bond length for the coordinated methanol is 2.059 (3) Å. There is an intermolecular hydrogen bond between the OH group of the coordinated methanol and one of the O atoms of the acac ligands in an adjacent complex cation [O5?O3′ = 2.914 (4) Å], giving a centrosymmetric dimeric dicationic complex. 相似文献
5.
Yi‐Hang Wen Jian Zhang Jian‐Kai Cheng Zhao‐Ji Li Ye‐Yan Qin Yao Kang Rui‐Feng Hu Yuan‐Gen Yao 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(6):m248-m249
The crystal structure of the title compound, [Zn(C5H5NS)4](NO3)2, consists of a [Zn(C5H5NS)4]2+ (C5H5NS is pyridinium‐2‐thiolate) cation and two nitrate anions. The central ZnII atom lies at a site with imposed symmetry and is surrounded by four S atoms [Zn—S = 2.3371 (5) Å] from four symmetrical pyridinium‐2‐thiolate ligands in a distorted tetrahedral geometry. There are N—H⋯O hydrogen‐bonding interactions between the pyridinium‐2‐thiolate ligands and nitrate O atoms. In addition, π–π interactions via aromatic N‐containing ligands are discussed. 相似文献
6.
Sujittra Youngme Jaturong Phatchimkun Narongsak Chaichit 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(6):m267-m268
In the structure of the title complex, [Cu(C2O4)(C10H9N3)(H2O)]·H2O, the CuII atom displays a square‐pyramidal geometry, being coordinated by two N atoms from the di‐2‐pyridylamine ligand, two O atoms from the oxalate group and one O atom of a water molecule. The complex molecules are linked to form a three‐dimensional supramolecular array by hydrogen‐bonding interactions between coordinated/uncoordinated water molecules and the uncoordinated oxalate O atoms of neighboring molecules. 相似文献
7.
Xu‐Cheng Fu Ming‐Tian Li Xiao‐Yan Wang Cheng‐Gang Wang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(1):m13-m15
In the crystal structure of the title complex, [Zn(C3H2O4)(C12H8N2)(H2O)2], the ZnII atom displays a distorted octahedral geometry, being coordinated by two N atoms from the 1,10‐phenanthroline ligand, two O atoms from different carboxylate groups of the chelating malonate dianion and two O atoms of cis water molecules. The complex molecules are linked to form a three‐dimensional supramolecular array by both hydrogen‐bonding interactions between coordinated water molecules and the uncoordinated carboxylate O atoms of neighboring molecules, and aromatic π–π stacking interactions between neighboring phenanthroline rings. 相似文献
8.
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
9.
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
10.
Sujittra Youngme Jaturong Phatchimkun Samran Prabpai Chaveng Pakawatchai Palangpon Kongsaeree 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(2):m45-m47
The two new title complexes, [Cu(N3)(dpyam)2]PF6 (dpyam is di‐2‐pyridylamine, C10H11N3), (I), and [Cu(N3)(dpyam)2]Cl·4H2O, (II), respectively, have been characterized by single‐crystal X‐ray diffraction. Both complexes display a distorted square‐pyramidal geometry. Each Cu atom is coordinated in the basal plane by three dpyam N atoms and one azide N atom in equatorial positions, and by another N atom from the dpyam group in the apical position. In complex (I), the one‐dimensional supramolecular architecture is assembled via hydrogen‐bonding interactions between the amine N atom and terminal azide N atoms and the F atoms of the PF6− anion. For complex (II), hydrogen‐bonding interactions between the amine N atom, the Cl− anion and water O atoms result in a two‐dimensional lattice. 相似文献
11.
Zhong‐Lu You Hai‐Liang Zhu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(9):m445-m446
The title compound, [Cu2(C16H24N2O)2Cl4], is a dinuclear copper(II) complex with inversion symmetry. Each CuII atom is five‐coordinated by two O and one N atom from two Schiff base ligands, and by two Cl atoms, giving an approximately trigonal–bipyramidal coordination environment. 相似文献
12.
T. V. Sundar V. Parthasarathi K. Sarkunam M. Nallu B. Walfort H. Lang 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(7):o464-o466
The title compounds, C15H16ClN2O+·Br−·1.5H2O and C15H16BrN2O+·Br−·1.5H2O, are isomorphous. The benzene ring is oriented nearly normal to the pyridine ring in both compounds. The molecular packing is mainly influenced by intermolecular O—H⋯O and O—H⋯Br interactions, as well as weak intramolecular C—H⋯O interactions. The H2OBr− units form an extended water–bromide chain, with a bridging water molecule on a twofold axis. 相似文献
13.
Pance Naumov Mirjana Ristova Michael G. B. Drew Seik Weng Ng 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(9):e372-e373
In the title compound, [Ni(C2H3O)2(C3H4N2)4], the Ni atom is coordinated centrosymmetrically by four N and two O atoms in an octahedral coordination [Ni—N = 1.986 (3) and 2.054 (3) Å; Ni—O = 2.697 (3) Å]. The O atoms of the acetate anions form hydrogen bonds to adjacent imidazole moieties, with the free O atom forming a somewhat shorter bond [N?O = 2.679 (3) and 2.870 (4) Å]. The hydrogen bonds give rise to a two‐dimensional layer structure. 相似文献
14.
Yan‐Ping Li Pin Yang Zi‐Xiang Huang Fu‐Xin Xie 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(1):m7-m9
The title compound, [Cu2(C6H12N4O2)(ClO4)2(C11H6N2O)2]·2C11H6N2O, contains a dinuclear copper(II) complex which lies about a twofold axis at the mid‐point of the C—C bond of the oxamide ligand that bridges the two CuII atoms. The Cu·Cu distance is 5.215 (2) Å and the Cu atoms have distorted octahedral coordination geometry. Intramolecular N—H·O and N—H·N hydrogen bonds and intermolecular C—H·O hydrogen bonds, together with π–π stacking interactions, dominate throughout the crystal structure. 相似文献
15.
A. van der Lee M. Barboiu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(4):m156-m158
The structure of the title supramolecular complex, [Cu(C7H5O2)2(C5H6N2)2]·0.75C6H6, has been determined. The Cu2+ ion lies on an inversion centre and is coordinated by four O atoms of two opposing benzoate molecules and two pyridine N atoms of two opposing aminopyridine molecules. The partially occupied benzene site lies across a twofold rotation axis. The crystal structure is dominated by two‐dimensional networks containing two different hydrogen‐bonded rings [(16) and (8)]. 相似文献
16.
Mamiko Odoko Kyouta Yamamoto Nobuo Okabe 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(9):m469-m470
In the title compound, [Ca(C6H5O4)2(C6H6O4)2]·4H2O, which is a kojic acid–Ca2+ complex, the Ca atom is on a twofold axis and is octacoordinated by O atoms from four pyrone ligand molecules. The hydroxyl and ketone O atoms of each ligand form a five‐membered chelate ring with the Ca atom. The crystal structure is stabilized by partial stacking and O—H?O hydrogen bonds. 相似文献
17.
Cengiz Arici Filiz Ercan Raif Kurtaran Orhan Atakol 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(7):812-814
In the title compounds, {2,2′‐[2,2‐dimethyl‐1,3‐propanediylbis(nitrilomethylidyne)]diphenolato‐κ4N,N′,O,O′}nickel(II), [Ni(C19H20N2O2)], and {2,2′‐[2,2‐dimethyl‐1,3‐propanediylbis(nitrilomethylidyne)]diphenolato‐κ4N,N′,O,O′}copper(II), [Cu(C19H20N2O2)], the NiII and CuII atoms are coordinated by two iminic N and two phenolic O atoms of the N,N′‐bis(salicylidene)‐2,2‐dimethyl‐1,3‐propanediaminate (SALPD2?, C17H16N2O22?) ligand. The geometry of the coordination sphere is planar in the case of the NiII complex and distorted towards tetrahedral for the CuII complex. Both complexes have a cis configuration imposed by the chelate ligand. The dihedral angles between the N/Ni/O and N/Cu/O coordination planes are 17.20 (6) and 35.13 (7)°, respectively. 相似文献
18.
Liang Shen 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(4):m128-m129
In the crystal structure of the title compound, [Mn(C3H2O4)(C10H8N2)(H2O)2], the MnII atom demonstrates a distorted octahedral geometry, being coordinated by two N atoms of a 2,2′‐bipyridine ligand, two O atoms from the carboxylate groups of the chelating malonate dianion and two O atoms of two cis water molecules. The complex molecules are linked to form a three‐dimensional supramolecular array by both hydrogen‐bonding interactions between coordinated water and the carboxylate groups of neighboring molecules and aromatic π–π‐stacking interactions of the bipyridine rings. 相似文献
19.
Ping Xiang Ying Chen Xu‐Jie Shen Hui‐Lan Chen Chun‐Ying Duan 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(4):421-422
The title compound, [Co(C6H13)(C11H19N4O2)(H2O)]ClO4, is in the general class of coenzyme B12 models which contain a ClO4 anion and a [Co(C6H13)(C11H19N4O2)(H2O)]+ cation. In the cation, the Co atom has a distorted octahedral coordination, with the n‐hexyl and H2O ligands in axial positions. The crystal data reveal some degree of flexibility in the Costa‐type system, which is similar to the coenzyme B12. 相似文献
20.
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