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1.
Kazem Barati William Clegg Mohammad Hossein Habibi Ross W. Harrington Arash Lalegani Morteza Montazerozohori 《Acta Crystallographica. Section C, Structural Chemistry》2016,72(3):239-242
Transition metal complexes of Schiff base ligands have been shown to have particular application in catalysis and magnetism. The chemistry of copper complexes is of interest owing to their importance in biological and industrial processes. The reaction of copper(I) chloride with the bidentate Schiff base N,N′‐bis(trans‐2‐nitrocinnamaldehyde)ethylenediamine {Nca2en, systematic name: (1E,1′E,2E,2′E)‐N,N′‐(ethane‐1,2‐diyl)bis[3‐(2‐nitrophenyl)prop‐2‐en‐1‐imine]} in a 1:1 molar ratio in dichloromethane without exclusion of air or moisture resulted in the formation of the title complex μ‐chlorido‐μ‐hydroxido‐bis(chlorido{(1E,1′E,2E,2′E)‐N,N′‐(ethane‐1,2‐diyl)bis[3‐(2‐nitrophenyl)prop‐2‐en‐1‐imine]‐κ2N,N′}copper(II)) dichloromethane sesquisolvate, [Cu2Cl3(OH)(C20H18N4O4)2]·1.5CH2Cl2. The dinuclear complex has a folded four‐membered ring in an unsymmetrical Cu2OCl3 core in which the approximate trigonal bipyramidal coordination displays different angular distortions in the equatorial planes of the two CuII atoms; the chloride bridge is asymmetric, but the hydroxide bridge is symmetric. The chelate rings of the two Nca2en ligands have different conformations, leading to a more marked bowing of one of the ligands compared with the other. This is the first reported dinuclear complex, and the first five‐coordinate complex, of the Nca2en Schiff base ligand. Molecules of the dimer are associated in pairs by ring‐stacking interactions supported by C—H…Cl interactions with solvent molecules; a further ring‐stacking interaction exists between the two Schiff base ligands of each molecule. 相似文献
2.
Huub Kooijman Kjeld J. C. van Bommel Willem Verboom David N. Reinhoudt Jan Kroon Anthony L. Spek 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(7):749-757
Two new polymorphs of the title compound, μ‐oxo‐bis{oxo{2,2′‐[propane‐1,3‐diylbis(nitrilomethylidyne)]diphenolato}rhenium(V)}, [Re2O(C17H16N2O3)2], are reported, containing either a conformation other than the one already known in the literature or a disorder involving both the new and the previously reported conformations. Four pseudo‐polymorphs of the title compound are also reported, containing four chloroform, two chloroform, two disordered dichloromethane or two water solvate molecules accompanying each Re complex molecule. Only in the hydrate does the Re complex adopt the old conformation. In all six structures, the complex molecule is located on a crystallographic inversion centre. Independent of the conformation, all ReV ions display the same, somewhat distorted, octahedral coordination. In all the solvates, hydrogen bonds are donated from the solvent to the O atoms bonded to Re, either of the C—H?O or O—H?O type, although the actual position of the solvent molecule can vary. Only in the hydrate is a two‐dimensional hydrogen‐bonded network found; isolated clusters are formed in all the other solvates. 相似文献
3.
Ana María García Jorge Manzur Andrs Vega 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(7):m335-m337
The title compund, [Cu2(OH)2(C22H25N3)2](ClO4)2, is a copper(II) dimer, with two [CuL]2+ units [L is bis(6‐methyl‐2‐pyridylmethyl)(2‐phenylethyl)amine] bridged by hydroxide groups to define the {[CuL](μ‐OH)2[CuL]}2+ cation. Charge balance is provided by perchlorate counter‐anions. The cation has a crystallographic inversion centre halfway between the CuII ions, which are separated by 3.0161 (8) Å. The central core of the cation is an almost regular Cu2O2 parallelogram of sides 1.931 (2) and 1.935 (2) Å, with a Cu—O—Cu angle of 102.55 (11)°. The coordination geometry around each CuII centre can be best described as a square‐based pyramid, with three N atoms from L ligands and two hydroxide O atoms completing the coordination environment. Each cationic unit is hydrogen bonded to two perchlorate anions by means of hydroxide–perchlorate O—H...O interactions. 相似文献
4.
Rongqing Li Pusu Zhao Guodong Tang Xiaoling Tang 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(10):m339-m341
The title compound, [Cu2(C13H14N3)2Cl2], is a neutral dimeric copper(II) complex. The two CuII atoms are asymmetrically bridged by two chloride ions. Each CuII atom is also bound to the three N atoms of a deprotonated tridentate Schiff base ligand, giving a distorted square‐pyramidal N3Cl2 coordination environment overall. The dinuclear complex lies across an inversion centre in the space group P. This work demonstrates the effect of ligand flexibility and steric constraints on the structures of copper(II) complexes. 相似文献
5.
Ismail Ercan Filiz Ercan Cengiz Arc Orhan Atakol 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(2):m137-m138
A new tetranuclear CuII–HgII–HgII–CuII complex, [Cu2Hg2Cl4(C18H18N2O2)2], has been prepared by means of a copper complex found in the literature. The molecular structure of this complex was determined by X‐ray diffraction and the Cu–Hg–Hg–Cu chain was seen to be non‐linear. The change in magnetic susceptibility with temperature was recorded for this complex and observed to abide by the Curie–Weiss law. The coordination around the HgII ions is square pyramidal. The Cu?Hg bridging distance is 3.5269 (7) Å. 相似文献
6.
Kai‐Long Zhong Li Chen Lin Chen 《Acta Crystallographica. Section C, Structural Chemistry》2011,67(2):m62-m64
The title compound, [Cu2(SO4)2(C10H8N2)2(C2H6O2)2(H2O)2]n, contains two crystallographically unique CuII centres, each lying on a twofold axis and having a slightly distorted octahedral environment. One CuII centre is coordinated by two bridging 4,4′‐bipyridine (4,4′‐bipy) ligands, two sulfate anions and two aqua ligands. The second is surrounded by two 4,4′‐bipy N atoms and four O atoms, two from bridging sulfate anions and two from ethane‐1,2‐diol ligands. The sulfate anion bridges adjacent CuII centres, leading to the formation of linear ...Cu1–Cu2–Cu1–Cu2... chains. Adjacent chains are further bridged by 4,4′‐bipy ligands, which are also located on the twofold axis, resulting in a two‐dimensional layered polymer. In the crystal structure, extensive O—H...O hydrogen‐bonding interactions between water molecules, ethane‐1,2‐diol molecules and sulfate anions lead to the formation of a three‐dimensional supramolecular network structure. 相似文献
7.
Wei Sun Yan‐Tuan Li Zhi‐Yong Wu Shu‐Fang Zhang Zhi‐Wei Yin 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(3):m108-m110
In the crystal structure of the title complex, [Cu2(C10H20N4O2)(C10H8N2)2](ClO4)2, the deprotonated dmaeoxd2− ligand {H2dmaeoxd is N,N′‐bis[2‐(dimethylamino)ethyl]oxamide} occupies an inversion centre at the mid‐point of the central C—C bond and is thus in a trans conformation. The two CuII atoms are located in slightly distorted square‐based pyramidal environments. The binuclear units interact with each other viaπ–π interactions to form a one‐dimensional chain extending in the c direction. 相似文献
8.
Md. Badruz Zaman Matthew J. Davis Mark D. Smith Hans‐Conrad zur Loye 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(6):m234-m236
Two twisted 1,2‐bis(2‐pyridyl)ethyne ligands bridge two Cd2+ centers in the C2‐symmetric title complex, [Cd2(NO3)4(μ‐C12H8N2)2(H2O)2]. The bridging ligands arch across one another creating a `zigzag loop' molecular geometry. Two nitrate ions and a water molecule complete the irregular seven‐coordinate Cd‐atom environment. The dihedral angles between the equivalent pyridyl ring planes of the two independent ligands are 67.2 (1)°. Owater—H⃛Onitrate hydrogen bonding creates two‐dimensional layers parallel to the ab plane. 相似文献
9.
Sanchay Jyoti Bora Purabi Sarmah Prodeep Phukan Birinchi K. Das 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(9):m392-m394
The title compound, [Cu2(C7H5O2)4(C7H10N2)2], is a crystallographically centrosymmetric binuclear complex, with Cu atoms [Cu...Cu = 2.6982 (4) Å] bridged by four benzoate ligands. Each of the Cu atoms in this bunuclear copper(II) acetate hydrate analogue is present in an approximately square‐pyramidal environment, with four O atoms in a plane and the pyridine N atom at the apical site. Selected geometric parameters are compared with values for related tetrabenzoate complexes of copper(II). 相似文献
10.
Tomislav Fri
i Alan J. Lough George Ferguson Branko Kaitner 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(5):m313-m315
The title dimeric complex, bis{μ‐2,2′‐[hexane‐1,6‐diylbis(nitrilomethylidyne)]diphenolato‐1:2κ4O,N:N′,O′}dicopper(II),[Cu2(C20H22N2O2)2], has been investigated by single‐crystal X‐ray diffraction, by thermogravimetric analysis and differential scanning calorimetry, and also by FT–IR spectroscopy. Different synthetic and crystallization procedures gave crystals which were quite different in appearance, and it was initially thought that these were different polymorphic forms. Subsequent structure determination showed, in fact, serendipitous preparation of crystals in the P41 space group by one method and in space group P43 by the other. In these enantiomorphic structures, the Cu atoms have a distorted flattened tetrahedral coordination, with Cu—N and Cu—O distances in the ranges 1.954 (4)–1.983 (4) and 1.887 (4)–1.903 (4) Å, respectively. 相似文献
11.
Anne Nielsen Christine J. McKenzie Andrew D. Bond 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(11):m447-m450
The title compound, [Mn2O2(C14H18N4)2](ClO4)3·6H2O, contains a mixed‐valent MnIII/MnIV complex. In accordance with a previous report [Collins, Hodgson, Michelsen & Towle (1987). J. Chem. Soc. Chem. Commun. pp. 1659–1660], the structure at 295 K is best described in the space group C2/c, with the complex exhibiting twofold rotational symmetry, and with half site occupancy for one perchlorate anion and several solvent water molecules. At 180 K, the structure is ordered in the subgroup P21/n and is clearly shown to be a hexahydrate, rather than the previously reported trihydrate. The origin of the order–disorder phase transition lies in the thermal motion of the perchlorate anions. 相似文献
12.
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.
Zhong‐Lu You 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):m295-m297
The two title complexes, catena‐poly[[{2,2′‐[1,3‐propanediylbis(nitrilomethylidyne)]diphenolato}cobalt(III)]‐μ‐azido], [Co(C17H16N2O2)(N3)]n, (I), and catena‐poly[[{2,2′‐[1,3‐propanediylbis(nitrilomethylidyne)]diphenolato}cobalt(III)]‐μ‐thiocyanato], [Co(C17H16N2O2)(NCS)]n, (II), are isomorphous polynuclear cobalt(III) compounds. In both structures, the CoIII atom is six‐coordinated in an octahedral configuration by two N atoms and two O atoms of one Schiff base, and two terminal N or S atoms from two bridging ligands. The [N,N′‐bis(salicylidene)propane‐1,3‐diaminato]cobalt(III) moieties are linked by the bridging ligands, viz. azide in (I) and thiocyanate in (II), giving zigzag polymeric chains with backbones of the type [–Co—N—N—N—Co]n in (I) or [–Co—N—C—S—Co]n in (II) running along the c axis. 相似文献
15.
Gary Teng Christopher P. Walczak Philip J. Squattrito Dillip K. Mohanty William Scharer Mark R. Giolando Kristin Kirschbaum 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(2):o76-o80
4,6‐Dinitro‐N,N′‐di‐n‐octylbenzene‐1,3‐diamine, C22H38N4O4, (I), 4,6‐dinitro‐N,N′‐di‐n‐undecylbenzene‐1,3‐diamine, C28H50N4O4, (II), and N,N′‐bis(2,4‐dinitrophenyl)octane‐1,8‐diamine, C20H24N6O8, (III), are the first synthetic meta‐dinitroarenes functionalized with long‐chain aliphatic amine groups to be structurally characterized. The intra‐ and intermolecular interactions in these model compounds provide information that can be used to help understand the physical properties of corresponding polymers with similar functionalities. Compounds (I) and (II) possess near‐mirror symmetry, with the octyl and undecyl chains adopting fully extended anti conformations in the same direction with respect to the ring. Compound (III) rests on a center of inversion that occupies the mid‐point of the central C—C bond of the octyl chain. The middle six C atoms of the chain form an anti arrangement, while the remaining two C atoms take hard turns almost perpendicular to the rest of the chain. All three molecules display intramolecular N—H...O hydrogen bonds between the amine and nitro groups, with the same NH group forming a bifurcated intermolecular hydrogen bond to the nitro O atom of an adjacent molecule. In each case, these interactions link the molecules into one‐dimensional molecular chains. In (I) and (II), these chains pack so that the pendant alkyl groups are interleaved parallel to one another, maximizing nonbonded C—H contacts. In (III), the alkyl groups are more isolated within the molecular chains and the primary nonbonded contacts between the chains appear to involve the nitro groups not involved in the hydrogen bonding. 相似文献
16.
Alexander J. Blake Vito Lippolis Tiziana Pivetta Gaetano Verani 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(8):m364-m367
In the first title salt, [Cu(C12H8N2)2(C5H10N2Se)](ClO4)2, the CuII centre occupies a distorted trigonal–bipyramidal environment defined by four N donors from two 1,10‐phenanthroline (phen) ligands and by the Se donor of a 1,3‐dimethylimidazolidine‐2‐selone ligand, with the equatorial plane defined by the Se and by two N donors from different phen ligands and the axial sites occupied by the two remaining N donors, one from each phen ligand. The Cu—N distances span the range 1.980 (10)–2.114 (11) Å and the Cu—Se distance is 2.491 (3) Å. Intermolecular π–π contacts between imidazolidine rings and the central rings of phen ligands generate chains of cations. In the second salt, [Cu(C10H8N2)2(C3H6N2S)](ClO4)2, the CuII centre occupies a similar distorted trigonal–bipyramidal environment comprising four N donors from two 2,2′‐bipyridyl (bipy) ligands and an S donor from an imidazolidine‐2‐thione ligand. The equatorial plane is defined by the S donor and two N donors from different bipy ligands. The Cu—N distances span the range 1.984 (6)–2.069 (7) Å and the Cu—S distance is 2.366 (3) Å. Intermolecular π–π contacts between imidazolidine and pyridyl rings form chains of cations. A major difference between the two structures is due to the presence in the second complex of two N—H...O hydrogen bonds linking the imidazolidine N—H hydrogen‐bond donors to perchlorate O‐atom acceptors. 相似文献
17.
Pan
e Naumov Gligor Jovanovski Sheng‐Zhi Hu Il‐Hwan Suh Ibrahim Abdul Razak Suchada Chantrapromma Hoong‐Kun Fun Seik Weng Ng 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(9):1016-1019
The short carbonyl bond in the title compound, [Cu2(C7H4NO3S)4(C3H4N2)4] [Liu, Huang, Li & Lin (1991). Acta Cryst. C 47 , 41–43], is an artifact of disorder in the isothiazol‐3(2H)‐one 1,1‐dioxide part of the 1,2‐benzisothiazol‐3(2H)‐one entity. In the present redetermination, all bond dimensions in the centrosymmetric dinuclear molecule are normal. The five‐coordinate Cu atom shows trigonal–bipyramidal coordination. Hydrogen bonds from the imidazole donor ligand link adjacent molecules into a two‐dimensional layer structure. 相似文献
18.
Yong Cui Jing Ren Gang Chen Weichao Yu Yitai Qian 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(12):e552-e553
The title complex, [PbBr2(bipy)]n (bipy is 4,4′‐bipyridine, C10H8N2), was obtained by hydrothermal reaction of Pb(O2CCH3), NaBr and bipy. The bipy group acts as a linear bifunctional bridge forming a planar {–[Pb(bipy)]–}n belt in the direction of the b axis. The remaining lead coordination sites are occupied by Br ions which link Pb centres in adjacent belts through double bridges to form extended two‐dimensional layers. 相似文献
19.
Yanko Moreno Yimmy Salgado María Teresa Garland Ricardo Baggio 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(11):m487-m489
In the title monomer, [Cu(NO3)2(C18H12N2)], the six‐coordinated CuII atom lies on a twofold axis which bisects one of the ligands (a chelating biquinoline) and duplicates the remaining ligand, a chelating nitrate. The latter binds in a very asymmetric way, consistent with a Jahn–Teller distortion in the coordination polyhedron which, due to the triple chelation, is extremely distorted and difficult to describe in terms of any regular model. 相似文献
20.
Min Chen Xu‐Dong Chen Miao Du 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(12):m570-m572
The title complex, [CdCl(NCS)(C10H8N2)]n, represents an unusual CdII coordination polymer constructed by two types of anionic bridges and 2,2′‐bipyridyl (bipy) terminal ligands. These two types of bridges are arranged around inversion centers. The distorted octahedral coordination of the CdII center is provided by two chloride ions, one N‐ and one S‐donor atom from two thiocyanate ions, and a pair of N atoms from the chelating bipy ligand. Interestingly, adjacent CdII ions are interconnected alternately by paired chloride [Cd...Cd = 3.916 (1) Å] and thiocyanate bridges [Cd...Cd = 5.936 (1) Å] to generate an infinite one‐dimensional coordination chain. Furthermore, weak interchain C—H...S interactions between the bipy components and thiocyanate ions lead to the formation of a layered supramolecular structure. 相似文献