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1.
Christian Nther Inke Jeß 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(3):m190-m192
The CuI cations in the title compound, [Cu(NCS)(C6H6N2O)2]n, are coordinated by N atoms from each of two mirror‐related nicotinamide ligands, as well as by one N atom of one thiocyanate ligand and one S atom of a symmetry‐related thiocyanate ligand, within a slightly distorted tetrahedron. The CuI cations and the thiocyanate anions are located on a crystallographic mirror plane and the nicotinamide ligands occupy general positions. The CuI cations are connected by the thiocyanate anions to form chains in the direction of the crystallographic a axis. These chains are connected by hydrogen bonds between the amide H atoms and the O atoms of adjacent nicotinamide ligands, to give a three‐dimensional structure. 相似文献
2.
Srećko I. Kirin Thomas Weyhermüller Klaus Merz Nils Metzler‐Nolte Prof. Dr. 《无机化学与普通化学杂志》2007,633(15):2706-2710
This work reports structural investigations on two metal complexes of the functionalized (p‐carboxylatobenzyl)‐bis(2‐picolyl)amine ligand 1 (HL). The complex {[HLPdCl]Cl × H2O}2 ( 2Pd ) has a square‐planar coordination around the Pd ion. It forms discrete dimers by intermolecular hydrogen bonding involving the protonated ligand HL. The coordination around the Zn2+ ion in {[(H2O)LZn]CF3SO3 × 2 H2O}∞ ( 3Zn ) is best described as distorted trigonal‐bipyramidal. The N3O2 ligand sphere is composed of three nitrogen atoms from the bpa ligand, one water molecule, and a carboxylate oxygen atom from a neighbouring molecule, thus forming infinite chains along the crystallographic a axis. Further intermolecular interactions are based on the same (H2O)2(anion)2 motif as for 2Pd , but whereas the former forms discrete dimers, 3Zn forms a more complicated two‐dimensional coordination polymer with additional intermolecular hydrogen bonds. 相似文献
3.
Denise J. Xu Long Pan Thomas J. Emge Xiao‐Ying Huang Jing Li 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(4):m150-m152
In the title compound, [Cu(C14H18O4)(H2O)]n, each CuII atom bonds to four O atoms of four adamantanediacetate (ada) ligands in equatorial positions and an O atom from a water molecule in the apical position. Two adjacent CuII atoms form a paddle‐wheel unit with four ada ligands. The distance between the two Cu atoms is 2.5977 (3) Å. A crystallographic inversion center is located at the center of the Cu–Cu core. Each Cu2(ada)4 paddle‐wheel further bonds to four adjacent identical paddle‐wheel units, generating a two‐dimensional layered structure of Cu(ada)(H2O) with a 44 topology. 相似文献
4.
Zhong‐Lu You 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(11):m466-m468
The two title complexes, [Zn2(C13H9Cl2N2O)2(C2H3O2)2], (I), and [Cu2(C13H9Cl2N2O)2(NCS)2], (II), are dinuclear Schiff base compounds. Both molecules are located on crystallographic centres of inversion. In (I), the ZnII atom is five‐coordinated in a trigonal–bipyramidal coordination, with one imine N atom of one Schiff base and two acetate O atoms defining the basal plane, and one O atom and one pyridine N atom of the Schiff base occupying the axial positions, while in (II), the CuII atom is five‐coordinated in a square‐pyramidal coordination, with one O and two N atoms of one Schiff base and one terminal N atom of a bridging thiocyanate ligand defining the basal plane, and one terminal S atom of another bridging thiocyanate ligand occupying the apical position. The different bridging ligands lead to the different coordinations of the complexes. 相似文献
5.
Hui‐Hua Xu Xian Tao Yue‐Qin Li Ying‐Zhong Shen Yan‐Hong Wei 《Acta Crystallographica. Section C, Structural Chemistry》2011,67(4):m93-m95
The title compound, [Zn2(C25H15N5O2)2]·2CH2Cl2, is a dinuclear double‐helical complex which lies on a crystallographic twofold axis. In the complex, both ligands are partitioned into two tridentate domains which allow each ligand to bridge both metal centres. Each ZnII atom is six‐coordinated in a distorted octahedral environment formed by two amide N atoms, two quinoline N atoms and two pyridine N atoms from two different ligand molecules, with the central pyridine ring, unusually, bridging two ZnII atoms. The deprotonated ligand is not planar, the amide side chains being considerably twisted out from the plane of the central pyridine ring. 相似文献
6.
Synthesis,Structures, and Luminescent Properties of Three Coordination Polymers Constructed from Tricarboxylate and Bisbenzoimidazole Ligand 下载免费PDF全文
The hydrothermal reaction of the tricarboxylate ligand 5‐(carboxymethoxy)isophthalic acid (H3L) with ZnII, CdII, and SnII salts in the presence of the bisbenzoimidazole coligand 1, 3‐bis(benzimidazol‐2‐yl)‐2‐oxapropane (bbop) afforded the coordination polymers, [Zn(HL)(bbop)]n ( 1 ), [Cd(HL)(bbop)]n ( 2 ), and {[H2(bbop)][Sn2L2]}n ( 3 ). The complexes were characterized by elemental analyses, IR spectroscopy, single‐crystal X‐ray diffraction analyses, thermogravimetric analyses, and fluorescence properties. The structures of complexes 1 and 2 are constructed by 1D chains and show strong blue luminescence emission. The structure of complex 3 is a 2D anionic dilayer, and shows a vase‐like porous structure occupied by the bulky [H2(bbop)]2+ cation, which is an uncommon structural feature in transition metal coordination polymers. The three complexes are further connected by hydrogen bonds to form 3D supramolecular architectures. 相似文献
7.
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
8.
Gina M. Chiarella Doris Y. Melgarejo John P. Fackler Jr 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(6):m228-m230
The title compound, [Cu4Cl6O(C5H9N3)3(NH3)], is a neutral conformationally chiral cluster which crystallizes under the conditions described in this paper as a racemic conglomerate. It contains four CuII atoms in a tetrahedral coordination with a central O atom lying on a crystallographic threefold axis. Six chloride anions bridge the four CuII atoms. Three CuII atoms are bound by an N atom of a monodentate 1,4,6‐triazabicyclo[3.3.0]oct‐4‐ene (Htbo) ligand and the remaining CuII atom is bound by a terminal ammine ligand. The geometry at each copper center is trigonal bipyramidal, produced by the bound N atom of Htbo or ammonia, the O atom in the axial position, and three chloride ions in the equatorial plane. The chloride anions form an octahedron about the oxygen center. The copper–ammonia bond lies along the crystallographic threefold axis, along which the molecules are packed in a polar head‐to‐tail fashion. 相似文献
9.
Hong‐Xi Li Yong Zang Mei‐Ling Cheng Jian‐Ping Lang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(2):m74-m77
The Zn atom in dichloro[(3,5‐dimethyl‐1H‐pyrazol‐1‐yl)methane]zinc(II), [ZnCl2(C11H16N4)], (I), is tetrahedrally coordinated by two N atoms from one bis(3,5‐dimethylpyrazolyl)methane ligand and two terminal Cl atoms. The molecule has no crystallographic symmetry. One H atom of the CH2 group of the bis(3,5‐dimethylpyrazolyl)methane ligand interacts with a Cl atom of an adjacent molecule to yield intermolecular C—H⋯Cl contacts, thereby forming a one‐dimensional zigzag chain extending along the b axis. On the other hand, in di‐μ‐chloro‐bis{chloro[(3,5‐dimethyl‐1H‐pyrazol‐1‐yl)methane]cadmium(II)}, [Cd2Cl4(C11H16N4)2], (II), each of the two crystallographically equivalent Cd atoms is pentacoordinated by two N atoms from one bis(3,5‐dimethylpyrazolyl)methane ligand, and by one terminal and two bridging Cl− anions. The molecule has a crystallographic centre of symmetry located at the mid‐point of the Cd⋯Cd line. One H atom of the CH2 group of the bis(3,5‐dimethylpyrazolyl)methane ligand interacts with a Cl atom of an adjacent molecule to produce pairwise intermolecular C—H⋯Cl contacts, thereby affording chains of molecules running along the c axis. 相似文献
10.
Syntheses,Structures, Electrochemistry,and Electrocatalysis of Three Copper(II) Coordination Polymers constructed from 5‐[4‐(1H‐Imidazol‐1‐yl)phenyl]‐1H‐tetrazole 下载免费PDF全文
Three coordination polymers (CPs) based on the 5‐[4‐(1H‐imidazol‐1‐yl)phenyl]‐1H‐tetrazole ( HL ) ligand, namely, [Cu(μ2‐ L )(μ4‐pbda)(H2O)] ( 1 ), [Cu2(μ‐Hbtc)(H2btc)(μ3‐OH)(μ4‐ HL )] ( 2 ) and [Cu5(μ3‐ L )(μ4‐ L )(μ3‐ip)(μ3‐OH)(H2O)2] · 2H2O ( 3 ) (H2pbda = 1,4‐benzenedicarboxylic acid, H3btc = 1,3,5‐benzenetricarboxylic acid, H2ip = isophthalic acid) were hydrothermally synthesized and structurally characterized. Complex 1 represents “weave”‐type 2D layers consisting of wave‐like 1D chains and 1D straight chains, which are further connected by hydrogen bonds to form a 3D supramolecular structure. Complex 2 exhibits a uninodal (4)‐connected 2D layer with a point symbol of {44 · 62}, in which the L ligand can be described as μ5‐bridging and the H2btc– ions display multiple kinds of coordination modes to connect CuII ions into 1D “H”‐type Cu‐H2btc chains. In complex 3 , 2D Cu‐ L layers with two kinds of grids and 1D “stair”‐type Cu‐ip chains link each other to construct a 3D {412 · 63} framework, which contains the pentanuclear subunits. Deprotonated degree and coordination modes of carboxylate ligands may consequentially influence the coordination patterns of main ligands and the final structures of complexes 1 – 3 . Furthermore, electrochemical behaviors and electrocatalytic activities of the title complexes were analyzed at room temperature, suggesting practical applications in areas of electrocatalytic reduction toward nitrite and hydrogen dioxide in aqueous solutions, respectively. 相似文献
11.
Ya‐Qin Wang Fa‐Zhi Xie Lin Du 《Acta Crystallographica. Section C, Structural Chemistry》2013,69(6):577-580
A novel metal–organic framework, {[Zn2Cl4(C25H24N4O4)]·4C3H7NO}n, has been synthesized solvothermally by assembling the semi‐rigid tetrahedral ligand tetrakis[(pyridin‐4‐yl)oxymethyl]methane (tpom) and zinc nitrate in dimethylformamide (DMF). The crystal structure is noncentrosymmetric (P21c). Each ZnII cation has a tetrahedral coordination environment (C2 symmetry), which is formed by two chloride ligands and two pyridine N atoms from two tpom ligands. The tetrahedral tetradentate tpom linker has a quaternary C atom located on the crystallographic axis. This linker utilizes all the peripheral pyridine N atoms to connect four ZnII cations, thereby forming a wave‐like two‐dimensional sheet along the c axis. The two‐dimensional layer can be topologically simplified as a typical uninodal 4‐connected sql/Shubnikov net, which is represented by the Schläfli symbol {44,62}. Adjacent layers are further packed into a three‐dimensional structure by C—H...Cl hydrogen bonds. 相似文献
12.
Jun Wang Xiao‐Juan Xu Jian‐Qing Tao Chun‐Yun Tan 《Acta Crystallographica. Section C, Structural Chemistry》2012,68(11):m309-m311
In the mixed‐ligand metal–organic title polymeric compound, [Zn(C10H8O4)(C10H16N6)]n or [Zn(PBEA)(BTH)]n [H2PBEA is benzene‐1,4‐diacetic acid and BTH is 1,6‐bis(1,2,4‐triazol‐1‐yl)hexane], the asymmetric unit contains a ZnII atom, one half of a BTH ligand and one half of a doubly deprotonated H2PBEA ligand. Each ZnII centre lies on a crystallographic twofold rotation axis and is four‐coordinated by two O atoms from two distinct PBEA2− ligands and two N atoms from two different BTH ligands in a {ZnO2N2} coordination environment. The three‐dimensional topology of the title compound corresponds to that of a fivefold interpenetrating diamond‐like metal–organic framework. 相似文献
13.
Jiao‐Jiao He Wen‐Xiang Chai Li Song Feng Niu Xiao‐Bin Fang 《Acta Crystallographica. Section C, Structural Chemistry》2012,68(8):m206-m208
In the noncentrosymmetric title compound, [Cu(C4H5NO4)(C6H12N4)(H2O)] or [Cu(IDA)(HMTA)(H2O)], where IDA is iminodiacetate and HMTA is hexamethylenetetramine, the asymmetric unit consists of a whole mononuclear neutral molecule, where the CuII cation is coordinated by two carboxylate O atoms and one N atom from the IDA ligand, by one N atom from the HMTA ligand and by the O atom of the coordinated water molecule, giving rise to a CuN2O3 distorted square‐pyramidal coordination geometry. The IDA and HTMA ligands adopt terminal tri‐ and monocoordinated modes, respectively. All adjacent molecules within the ac plane are connected to each other via two pairs of O—H...O and one N—H...O hydrogen bond, forming a (4,4) supramolecular two‐dimensional network. In the unit cell, these layers stack alternately in an …ABABAB… sequence along the b axis. The optical absorption properties of this compound have been studied on powder samples, which had previously been examined by powder X‐ray diffraction. 相似文献
14.
Li‐Na Zhu Shan Gao Li‐Hua Huo 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(4):m182-m184
In the C2‐symmetric dinuclear title complex, [Zn2(C18H13N4O2)2(C2H3O2)2]·4H2O, each ZnII ion is five‐coordinated in a distorted trigonal bipyramidal fashion by one carboxylate O atom from one benzoate ligand, one imine N atom and two pyridyl N atoms from a second benzoate ligand, and one O atom from an acetate anion. The two Zn atoms are bridged by the two benzoate ligands, forming a dinuclear structure with a 14‐membered macrocycle. Adjacent dinuclear units are further connected by extensive hydrogen bonds involving the solvent water molecules, giving a three‐dimensional hydrogen‐bonded framework. The framework can be regarded as an example of the four‐connected node network of the PtS topology. 相似文献
15.
Zhao‐Peng Qi Qing Yuan Kai Cai Taka‐aki Okamura Wei‐Yin Sun Norikazu Ueyama 《无机化学与普通化学杂志》2010,636(11):2009-2015
The protonation and ZnII/CuII complexation constants of tripodal polyamine ligand N1‐(2‐aminoethyl)‐N1‐(1H‐imidazol‐4‐ylmethyl)‐ethane‐1,2‐diamine (HL) were determined by potentiometric titration. Three new compounds, i.e. [H3(HL)](ClO4)3 ( 5 ), [Zn(HL)Cl](ClO4) ( 6 ) and {[Zn(L)](ClO4)}n ( 7 ) were obtained by reactions of HL · 4HCl with Zn(ClO4)2 · 6H2O under different reaction pH, and they were compared with the corresponding CuII complexes reported previously. The results indicate that the reaction pH and metal ions have remarkable influence on the formation and structure of the complexes. 相似文献
16.
Three new complexes constructed by 1‐adamantaneacetic acid (HL), [Zn2L4]n ( 1 ), [MnL2(4,4′‐bipy)(H2O)2]n· 2n(HL) ( 2 ) and MnL2(2,2'‐bipy)(H2O)2 ( 3 ), have been hydrothermally synthesized. X‐ray single crystal diffraction analyses reveal that both 1 and 2 are infinite 1D chains along b axis. 2 and 3 have an octahedral coordination and show the supramolecular structures which are formed on the basis of the connectivity of intermolecular hydrogen bonds. The deprotonated L? ligands coordinate the M(II) atoms with many coordination modes in the title complexes. 相似文献
17.
Four novel mixed‐ligand complexes were obtained from the reaction of maleic acid, diimine chelating ligands and Cd(OH)2 or CdO in a mixed solvent of water and methanol. The complexes were characterized by IR spectroscopy, elemental analysis, and single‐crystal X‐ray diffraction. The results show that all the four complexes are coordination polymers. [Cd(phen)(H2O)(male)]n · 2nH2O ( 1 ) and [Cd(bipy)(H2O)(male)]n · 2nH2O ( 2 ) (male = maleate; phen = 1, 10‐phenanthroline, bipy = 2, 2′‐bipyridine) are isomorphic, and the asymmetric unit is constructed by one CdII atom, a maleate group, a diimine ligand and two crystal water molecules. Each maleate group links two CdII atoms in a bis(bidentate) chelating mode, resulting in a 1D helical chain. Within [Cd(phen)(H2O)2(male)]n · 2nH2O ( 3 ), the maleate group bridges two CdII atoms in a bis(monodentate) chelating mode into a 1D helical chain along the [100] direction. The helical chain is decorated by phen groups alternatively at the two sides, and each phen plane of one chain is inserted in the void space between two adjacent phen ligands from an adjacent chain, resulting in a double zipper‐like chain. The asymmetric unit of [Cd2(phen)2(male)2]n ( 4 ) contains a CdII cation, one phen molecule, and a maleate group, and one bridging maleate group links three CdII atoms resulting in a 2D layer extending in [011] plane. The 2D networks are constructed by four kinds of rings formed by the central metal atom and maleate dianion. The thermostabilities of the four complexes were investigated. 相似文献
18.
Jing Xiao Jian‐Ping Ma Ru‐Qi Huang Yu‐Bin Dong 《Acta Crystallographica. Section C, Structural Chemistry》2011,67(4):m90-m92
The new asymmetric ligand 2‐{5‐[(pyridin‐4‐ylmethyl)sulfanyl]‐1,3,4‐oxadiazol‐3‐yl}phenol (HL) has been used to synthesize the novel discrete title binuclear metallocycle, [Cu2(C14H10N3O2S)2(C5H7O2)2] or Cu2L2(acac)2 (acac is acetylacetonate). Each CuII centre is five‐coordinate and adopts a square‐pyramidal geometry. Two ligands are connected by two CuII cations to form the dinuclear metallocycle, which lies across a crystallographic inversion centre. Discrete molecules are linked into a two‐dimensional structure through weak Cu...S, C—H...π and π–π interactions. 相似文献
19.
Xiu‐Yan Wang Ming Wang Xiao‐Yuan Ma 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(12):m459-m462
In the isomorphous title compounds, [Cd2(C8H4O4)2(C19H10ClFN4)2(H2O)2] and [Zn2(C8H4O4)2(C19H10ClFN4)2(H2O)2], the CdII centre is seven‐coordinated by two N atoms from one [2‐(2‐chloro‐6‐fluorophenyl)‐1H‐imidazo[4,5‐f][1,10]phenanthroline (L) ligand, one water O atom and four carboxylate O atoms from two different benzene‐1,2‐dicarboxylate (1,2‐bdc) ligands in a distorted pentagonal–bipyramidal coordination, while the ZnII centre is six‐coordinated by two N atoms from one L ligand, one water O atom and three carboxylate O atoms from two different 1,2‐bdc ligands in a distorted octahedral coordination. Each pair of adjacent metal centres is bridged by two 1,2‐bdc ligands to form a dimeric structure. In the dimer, each L ligand coordinates one metal centre. The dimer is centrosymmetric, with a crystallographic inversion centre midway between the two metal centres. The aromatic interactions lead the dimers to form a two‐dimensional supramolecular architecture. Finally, O—H...O and N—H...O hydrogen bonds reinforce the two‐dimensional structures of the two compounds. 相似文献
20.
Mariana Dennehy Oscar V. Quinzani Ricardo Faccio Eleonora Freire lvaro W. Mombrú 《Acta Crystallographica. Section C, Structural Chemistry》2012,68(1):m12-m16
(Acetonitrile‐1κN)[μ‐1H‐benzimidazole‐2(3H)‐thione‐1:2κ2S:S][1H‐benzimidazole‐2(3H)‐thione‐2κS]bis(μ‐1,1‐dioxo‐1λ6,2‐benzothiazole‐3‐thiolato)‐1:2κ2S3:N;1:2κ2S3:S3‐dicopper(I)(Cu—Cu), [Cu2(C7H4NO2S2)2(C7H6N2S)2(CH3CN)] or [Cu2(tsac)2(Sbim)2(CH3CN)] [tsac is thiosaccharinate and Sbim is 1H‐benzimidazole‐2(3H)‐thione], (I), is a new copper(I) compound that consists of a triply bridged dinuclear Cu—Cu unit. In the complex molecule, two tsac anions and one neutral Sbim ligand bind the metals. One anion bridges via the endocyclic N and exocyclic S atoms (μ‐S:N). The other anion and one of the mercaptobenzimidazole molecules bridge the metals through their exocyclic S atoms (μ‐S:S). The second Sbim ligand coordinates in a monodentate fashion (κS) to one Cu atom, while an acetonitrile molecule coordinates to the other Cu atom. The CuI—CuI distance [2.6286 (6) Å] can be considered a strong `cuprophilic' interaction. In the case of [μ‐1H‐benzimidazole‐2(3H)‐thione‐1:2κ2S:S]bis[1H‐benzimidazole‐2(3H)‐thione]‐1κS;2κS‐bis(μ‐1,1‐dioxo‐1λ6,2‐benzothiazole‐3‐thiolato)‐1:2κ2S3:N;1:2κ2S3:S3‐dicopper(I)(Cu—Cu), [Cu2(C7H4NO2S2)2(C7H6N2S)3] or [Cu2(tsac)2(Sbim)3], (II), the acetonitrile molecule is substituted by an additional Sbim ligand, which binds one Cu atom via the exocylic S atom. In this case, the CuI—CuI distance is 2.6068 (11) Å. 相似文献