1-D Open-channeled 3-D Supramolecular Frameworks Built with 2,3-Dihydroxybutanedioic Acid (H4dhbd) and 2,2':6,2"-Terpyridine (tpy)

The complex [Cu2(H2dhbd)2(tpy)2]·CH3OH·4H2O1 (H4dhbd=2,3-dihydroxybutane-dioic acid, tpy=2,2":6',2"-terpyddine) has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction analysis. The crystal is of triclinic, space groups P1 with a=8.6859(17), b=11.223(2), c=12.275(2)A,α=112.454(3), β=98.435(3),γ=105.593(3)°, V=1022.5(3) A3, Z=1, C38H42Cu2N6.O18, Mr=997.86, Dc=1.621 g/cm3,μ=1.127 mm-1, F(000)=514, T=293(2) K, the final R=0.0539 and wR=0.1394 for 3550 observed reflections with 1 >20(1). In the dinuclear unit, two CuⅡ atoms are bridged by two H2dhbd chelate anions, forming a 14-membered ring, in which the distance of Cu…Cu atoms is 7.0526(12)A. Adjacent dinuclear units are constituted through π-π interactions and C-H…O hydrogen-bonding interactions, fashioning the final 3-D supramolecular framework with 1-D open channels. Variable-temperature magnetic susceptibility measurement indicates the presence of weak antiferromagnetic exchange interactions between CuⅡ ions.     

A Tetranuclear Complex Assembled from N,N＇-Bis（4-（3＇-formyl-5＇-methylsalicyclidene）-iminoethyl）-4-methyl-2,6-bimethyliminophenol

The reaction of 2,6-diformyl-4-methylphenol, ethylenediamine and Cu（Ⅱ） in the proportion of 3：2：2 yields a new tetranuclear copper（Ⅱ） complex, [Cu2L]2（ClO4）2.2H2O（H3L= N,N＇-bis（4-（3＇-formyl-5＇-methylsalicyclidene）iminoethyl）-4-methyl-2,6-bimethyliminophenol）. The complex has been characterized by ES-MS, IR and X-ray diffraction analysis, and its crystal crystallizes in the triclinic system, space group P1 with a = 10.8673（11）, b = 12.0829（12）, c = 14.4834（15） А, α= 111.946（2）, β= 105.828（2）, γ = 99.583（2）°,V= 1618.5（3） А^3, Dc = 1.605 g/cm^3, Z = 2, Mr = 1564.26, F（000） = 800.0,μ（MoKa） = 1.460/mm, S = 1.063, R = 0.0612 and wR = 0.1163 for 6245 observed reflections （I 〉 2σ（I））. The complex is a dimer of dinuclear copper（Ⅱ） acylic enantiomorph subunit [Cu2L]ClO4.H_2O, held together by π…π weak coordination and hydrogen bonding interactions. In addition, the π…π interactions related to phenyl moieties as well as CH=N…π interactions were also found to stabilize the supramolecular architectures in the solid state.     

Synthesis and Crystal Structure of a Copper(II) Compound Constructed by N-(4,6- Dimethoxylpyrimidin)-N'-(ethoxycarbonyl)thiourea

A copper(Ⅱ) complex Cu(L)2(NO3)2 constructed by the L (L = N-(4,6-dime- thoxylpyrimidin)-N'-(ethoxycarbonyl)thiourea) ligand crystallizes in monoclinic, space group C2/c with a = 16.2416(16), b = 9.1385(7), c = 22.0008(18) (A),β = 108.077(2)°, V ＝ 3104.3(5)(A)3, Dc = 1.627 g/cm3, Z = 4, C20H28CuN10O14S2, Mr = 760.18, μ(MoKα) = 0.920 mm-1, F(000) = 1564, R = 0.0471 and wR = 0.1284 for 2239 observed reflections (I > 2σ(I)). X-ray diffraction shows the existence of weak complementary intramolecular N-H…O (DA) hydrogen bonds which further strengthen the coordination from the two L ligands with the Cu(II) ion, intermolecular C-H…O hydrogen bonds and weak π…π stacking interactions, leading to the formation of a multi-dimen- sional supramolecular network.     

Synthesis,Crystal Structure and Characterization of a New Tetra-nuclear Lead Complex:[Pb_4(1,2-bdc)_4(L)_2]·2.25H_2O

The title complex,[Pb4(1,2-bdc)4(L)2]·2.25H2O 1(L = 2-(2-chloro-6-fluorophen-yl)-1H-imidazo[4,5-f][1,10]phenanthroline,1,2-H2bdc = 1,2-benzenedicarboxylic acid),has been obtained by using hydrothermal synthesis and characterized by elemental analysis,IR and single-crystal X-ray diffraction.It crystallizes in monoclinic,space group P21/c with a = 12.0920(6),b = 18.9248(10),c = 15.2729(8) ,β = 98.7530(10)°,V = 3454.3(3) 3,Z = 1,C140H90Cl4F4N16O41Pb8,Mr = 4527.60,Dc = 2.176 g/cm3,F(000) = 2130,μ(MoKa) = 9.884 mm-1,R = 0.0241 and wR = 0.0582.Compound 1 exhibits a unique tetra-nuclear structure,and is further stacked by π-π interactions to give a two-dimensional supramolecular layer.The N-H···O and O-H···O hydrogen bonds stabilize the structure of 1.     

A New Diiminopyridyl Cobalt Complex [CoCl2L] (L = 2,6-Bis(N,N'-bis(2,6-diisopropyl-4-(2,3-dimethyoxylbenzoylamide)phenylimino))pyridine)

The reaction of CoCl2·6H2O with 2,6-bis(N,N'-bis(2,6-diisopropyl-4-(2,3-dimethy-oxyl-benzoylamide)phenylimino))pyridine (L) afforded the complex [CoCl2L], which was fully characterized by elemental analysis, UV-vis, IR spectroscopy, fluorescence, and X-ray diffraction analysis. The compound is oftriclinie system, space group P1- with a = 13.058(3), b = 13.798(3), c =16.695(3) (A), α = 98.191(3),β = 102.792(3), γ = 101.820(3)°,V= 2815.0(9) (A)3, Z= 2, F(000) = 1122,μ = 0.45 mm-1, R = 0.061 and wR= 0.1349 for 9842 observed reflections (1 2σ(Ⅰ)). The Co(Ⅱ center adopts a distorted square-pyramidal coordination geometry. The extended structure shows a one-dimensional zigzag double chain linked by hydrogen bonds and π-π stacking interactions.     

Hydrothermal Synthesis and Crystal Structure of a Novel Hexanuclear Copper（Ⅱ） Complex：[Cu_6（DPPZ）_4（btc）_4（H_2O）_8]·5H_2O

A new hexanuclear copper(Ⅱ) complex,[Cu 6 (DPPZ) 4 (btc) 4 (H 2 O) 8 ]·5H 2 O (1,DPPZ=dipyrido[3,2-a:2,3-c]phenazine,H 3 btc=1,3,5-benzenetricarboxylic acid),has been hydrothermally synthesized and structurally characterized by X-ray single-crystal diffraction,elemental analyses,IR,and thermogravimetric analysis.Its crystal structure is of triclinic system,space group P1 with a=12.489(4),b=14.234(5),c=14.484(5),α=82.848(4),β=79.399(4),γ=73.646(4)°,V=2421.2(13) 3,Z=1,Cu 6 C 108 H 78 N 16 O 37,M r=2573.17,D c=1.752 g/cm 3,μ=1.398 mm-1,F(000)=1308,GOOF=1.011,the final R=0.0495 and wR=0.1030 for 5420 observed reflections with I > 2σ(Ⅰ).In 1,four btc 3ligands act as bridges between six neighboring Cu atoms to form an unusual hexanuclear copper cluster.The clusters are further connected by two types of O-H···O and O-H···N hydrogen bonds,generating a three-dimensional supramolecular structure.In addition,intermolecular and intramolecular π-π stacking interactions further consolidate the three-dimensional supramolecular framework of 1.     

Syntheses, characterization, and magnetic studies of copper(II) complexes with the ligand N,N,N',N'-tetrakis(2-pyridylmethyl)-1,3-benzenediamine (1,3-tpbd) and its phenol derivative 2,6-bis[bis(2-pyridylmethyl)amino]-p-cresol] (2,6-Htpcd)

The copper(II) complexes [Cu(4)(1,3-tpbd)(2)(H(2)O)(4)(NO(3))(4)](n)(NO(3))(4n)·13nH(2)O (1), [Cu(4)(1,3-tpbd)(2)(AsO(4))(ClO(4))(3)(H(2)O)](ClO(4))(2)·2H(2)O·0.5CH(3)OH (2), [Cu(4)(1,3-tpbd)(2)(PO(4))(ClO(4))(3)(H(2)O)](ClO(4))(2)·2H(2)O·0.5CH(3)OH (3), [Cu(2)(1,3-tpbd){(PhO)(2)PO(2)}(2)](2)(ClO(4))(4) (4), and [Cu(2)(1,3-tpbd){(PhO)PO(3)}(2)(H(2)O)(0.69)(CH(3)CN)(0.31)](2)(BPh(4))(4)·Et(2)O·CH(3)CN (5) [1,3-tpbd = N,N,N',N'-tetrakis(2-pyridylmethyl)-1,3-benzenediamine, BPh(4)(-) = tetraphenylborate] were prepared and structurally characterized. Analyses of the magnetic data of 2, 3, 4, and [Cu(2)(2,6-tpcd)(H(2)O)Cl](ClO(4))(2) (6) [2,6-tpcd = 2,6-bis[bis(2-pyridylmethyl)amino]-p-cresolate] show the occurrence of weak antiferromagnetic interactions between the copper(II) ions, the bis-terdentate 1,3-tpbd/2,6-tpcd, μ(4)-XO(4) (X = As and P) μ(1,2)-OPO and μ-O(phenolate) appearing as poor mediators of exchange interactions in this series of compounds. Simple orbital symmetry considerations based on the structural knowledge account for the small magnitude of the magnetic couplings found in these copper(II) compounds.     

Spectral studies of copper(II) complexes of tridentate acylhydrazone ligands with heterocyclic compounds as coligands: X-ray crystal structure of one acylhydrazone copper(II) complex

Six copper(II) complexes of 2-hydroxy-4-methoxybenzaldehyde nicotinoylhydrazone (H2hmbn), 2-hydroxy-4-methoxyacetophenone nicotinoylhydrazone (H2hman), 2-hydroxy-4-methoxybenzaldehyde benzoylhydrazone (H2hmbb) and 2-hydroxy-4-methoxyacetophenone benzoylhydrazone (H2hmab) have been synthesized. The complexes viz. [Cu(hmbn)](2)·2H(2)O (1), [Cu(hman)](2) (2), [Cu(hmbb)](2)·2H(2)O (3), [Cu(hmbb)phen]·1(1/2)H2O (4), [Cu(hmbb)(bipy)·H2O] (5) and [Cu(hmab)phen] (6) were characterized by different physicochemical techniques. The crystal structure of [Cu(hman)phen] is obtained and it has a distorted square pyramidal geometry with π-π stacking interactions and significant C-H π interactions.     

Synthesis and Crystal Structure of a Copper(Ⅱ) Compound Constructed by N-(4,6-Dimethoxylpyrimidin)-N'-(ethoxycarbonyl)thiourea

A copper(Ⅱ ) complex Cu(L)2(NO3)2 constructed by the L (L = N-(4,6-dime- thoxylpyrimidin)-N'-(ethoxycarbonyl)thiourea) ligand crystallizes in monoclinic, space group C2/c with a = 16.2416(16), b = 9.1385(7), c = 22.0008(18) , β = 108.077(2)o, V = 3104.3(5)3, Dc = 1.627 g/cm3, Z = 4, C20H28CuN10O14S2, Mr = 760.18, μ(MoKα) = 0.920 mm–1, F(000) = 1564, R = 0.0471 and wR = 0.1284 for 2239 observed reflections (I > 2σ(I)). X-ray diffraction shows the existence of weak complementary intramolecular N–H…O (DA) hydrogen bonds which further strengthen the coordination from the two L ligands with the Cu(II) ion, intermolecular C–H…O hydrogen bonds and weak π…π stacking interactions, leading to the formation of a multi-dimen- sional supramolecular network.     

Synthesis, Crystal Structure and Electrochemistry Properties of a (N,N''-Ethylene-bis(salicylaldiminato)) Nickel(Ⅱ) Complex, [Ni2(salen)2]·NCS-NH4

A new Ni(Ⅱ) complex [Ni2(salen)2]·(NCS)·NH4 (salen = N,N'-bis(salicylidenea-mino)ethanato) has been prepared and structurally characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. It crystallizes in the orthorhombic system, space group Pbca with a = 16.8725(13), b = 19.0046(15), c = 20.0583(16) (A), Z = 8, V = 6431.8(9) (A)3, C33H32N6Ni2O4S1, Mr= 726.13, Dc = 1.500 g/cm3, F(000) = 3008, μ = 1.284 mm-1, the final R = 0.0394 and wR = 0.0767 for 4449 observed reflections with Ⅰ＞2σ(Ⅰ). The complex involves a N,N'-ethylene-bis(salicylaldiminato) Schiff base, an isothiocyanato anion and an ammonium cation. The nickle(Ⅱ) ion adopts a distorted square coordination geometry with N2O2 set of Schiff base ligand. The complexes are linked into a dimmer via intermolecular hydrogen bonds and the [Ni(salen)] moieties are connected together to form a 2-D layer structure by intermolecular N-H…O hydrogen bonds and π-π stacking. Cyclic-voltammetry method was used to characterize electrochemically the complex.     

Synthesis, Crystal Structure and Property of a Series of Supramolecular Polymers Based on Novel 3,5-Dimethyl- 2,6-bis（3-（pyrid-2-yl）-1,2,4-triazolyl）pyridine Ligand

Solvothermal reactions of 3,5-dimethyl-2,6-bis(3-(pyrid-2-yl)-1,2,4-triazolyl) pyridine (L), 1,4-benzendicarboxylic acid (H2bdc), and transitional metal cations of MII (M = Mn, Co, Cd) in the presence of oxalic acid (H2ox) afford three novel supramolecular polymers (CPs), namely, {[M2(ox)(L)2][bdc][M2(Hox)2(OH)2(H2O)4].3H2O}n (M=Mn for 1, Co for 2, Cd for 3). Single-crystal X-ray diffraction analysis reveals that complexes 1-3 are isostructural and the 3D supramolecular structure was connected through non-covalent interactions. With the help of H2ox, the L ligands cheated with center atoms forming a butterfly [M2(ox)(L)2]2+ building block. The bdc2- ligand linked with the unprecedented [M2(Hox)2(OH)2(H2O)4] units through strong O-H…O hydrogen bonds forming a zigzag chain, which are further connected through π…π interactions between L and bdc2- ligands to form a 3D supramolecular structure. Moreover, elemental analyses, IR, thermogravimetric, PXRD and luminescence have been investigated.     

配合物[Cu2(C4H2O6)(Phen)2(H2O)]·8H2O的合成、晶体结构和抗菌活性

在pH≈10的乙醇-水溶液中以硫酸铜、酒石酸和邻菲咯啉反应合成了分子式为[Cu₂(C₄H₂O₆)(Phen)₂(H₂O)]·8H₂O的配合物单晶。用X-射线单晶衍射测定了晶体结构，并研究了配合物对大肠杆菌、金黄色葡萄球菌、枯草杆菌的抗菌活性。晶体属单斜晶系，空间群P2₁。标题化合物为双核铜配合物，2个铜原子配位数不同。Cu(1)是五配位的，具有扭曲的四方锥结构，5个配位原子分别是酒石酸的去质子的羟基氧和羧基氧、邻菲咯啉的2个氮原子及1个水分子的氧原子。Cu(2)为四配位的，配位原子分别是酒石酸的去质子的羟基氧和羧基氧和邻菲咯啉的2个氮原子。分子中Cu(1)…Cu(2)间的距离为0.354 8 nm。存在分子内邻菲咯啉-邻菲咯啉的面—面π-π相互作用，面间距为0.381 3 nm。配合物对大肠杆菌、金黄色葡萄球菌、枯草杆菌具有较强的抗菌活性。     

Synthesis,Structure and Properties of a Binuclear Copper Complex [Cu（Br2hama）（DMF）]2, where Br2hamaH2 = [（3,5-Dibromo-2-hydroxybenzylidene）-amino]-methanesulfonic Acid

The copper（II） compound [Cu（Brzhama）（DMF）]2 （C22H24Br4Cu2N4O10S2, Br2hamaH2 = [（3,5-dibromo-2-hydroxybenzylidene）-amino]-methanesulfonic acid, DMF = N,N＇-dimethylformamide） 1 crystallizes in trictinic, space group P1 with a = 8.477（2）, b = 10.164（2）, c = 10.671（2）A, α= 112.66（3）, β = 104.33（3）, γ = 96.67（3）°, Z = 1, and R = 0.0789 for 1823 observed reflections with I 〉 2σ（I）. The centrosymmetric molecule comprises a pair of copper atoms connected by two anions of [（3,5-dibromo-2-hydroxybenzylidene）-amino]-methanesulfonic acid in a tetradentate coordination mode. The five-coordination of copper（II） is further completed by DME The complex forms a 1-D chain through C-H…π hydrogen bonds. The Cu^II…Cu^II distance is 4.937（1） A.     

噻吩和吡啶取代三芳基三唑的两个铜配合物的合成与晶体结构

分别以3-(2-吡啶基)-4-苯基-5-(2-噻吩基)-1,2,4-三氮唑(L1)和3-(2-吡啶基)-4-(4-氯苯基)-5-(2-噻吩基)-1,2,4-三氮唑(L2)作为配体,合成了2个新的单核铜配合物:trans-[Cu(L1)2(MeOH)2](ClO4)2(1)和trans-[Cu(L2)2(ClO4)2]·...     

N,N''''-二苄基-苯并咪唑四氯合铜(Ⅱ)化合物的合成、结构和性能研究

0IntroductionAlthoughbiologicalsystemsefficientlyorganizesimpleunitsintoaggregateswithintricateandwonderfulfunctionsbynon-covalentinteractions,self-assem-blyofframeworkswithspecifictopology,interestingpropertiesandfunctionsisstillachallengefochemists[1].Anumberofhydrogen-bondedaggregatehavebeenobtainedbyself-organizationoforganicoorganic-inorganiccomponents[2,3].Hydrogenbondingbetweentheorganiccationandthemetallayerisanimportantissueinunderstandingtheorganic-inorganichybridmaterials,whichinflu…     

1，4-苯二硫乙酸配体构筑的锌(Ⅱ)及镉(Ⅱ)配合物的合成、晶体结构及荧光性质

基于1,4-苯二硫乙酸(H2L)及中性含氮配体,水热法合成了两个新的d10金属配合物[ZnClL0.5(bpp)](1)和[Cd2L(phen)4(H2O)2].L.2.78H2O(2)(bpp=1,3-di(4-pyridyl)propane,phen=1,10-phenanthroline),并通过单晶X-射线衍射、元素分析、红外光谱和热重对其结构进行了表征。结构分析表明,在配合物1中,Zn(Ⅱ)呈现四配位的扭曲四面体构型,进一步连接形成一维双链状结构。在配合物2中,Cd(Ⅱ)呈现六配位的扭曲八面体构型,并通过可能存在的氢键及π-π堆积作用,形成最终的三维超分子结构。同时,讨论了两种配合物的固体荧光性质。     

Two Cd(Ⅱ) and Cu(Ⅱ) Complexes Based on 1-Butylbenzimidazole: Crystal Structures and Weak Interactions

1-Butylbenzimidazole L reacted with Cd(NO3)2·4H2O to afford complex [CdL(NO3)3H2O]·[HL] 1. The heptacoordinated Cd(Ⅱ) center adopts a distorted pentagongal bipyramidal geometry, and complex [CdL(NO3)3H2O]-entity and the protonated benzimidazium salt [HL]+ are connected via N-H···O hydrogen bond to form a dimeric unit [CdL(NO3)3H2O]·[HL]. A 3-D supramolecular network of 1 is formed through N-H···O and O-H···O hydrogen bonds together with π-π stacking interactions. Reaction of L with CuCl2 afforded a mononuclear complex, [CuL2Cl2] 2, in which the tetracoordinated Cu(II) center adopts a distorted tetrahedral geometry. In contrast, 2-D supramolecular layers of 2 are formed by C-H···Cl hydrogen bonds. The fluorescent emission spectra of L, 1 and 2 are described.     

Hydrothermal Assembly and Structural Characterization of an Octamolybdate Supported Copper(Ⅰ) Tetramer:[Cu2(1,10-phen)2(4,4'-bpy)]2[Mo8O26]·4H2O

A hydrothermal reaction of copper acetate with ammonium molybdate, 4,4'-bpy (4,4'-bipyridine) and 1,10-phen (1,10-phenanthroline) led to the formation of brown crystals of [Cu2(1,10-phen)2(4,4'-bpy)]2 [Mo8O26]@4H2O 1. Single-crystal X-ray analysis has revealed that 1 C68H56N12O30Cu4Mo8 crystallizes in the triclinic system, space group P ī with a = 11.270(3), b = 13.113(6), c = 13.906(3)A, α = 103.33(4),α = 98.54(2),β= 101.29(2)°, V = 1920.1(1)A3, Mr = 2542.9(3), Z = 1, Dc = 2.199 g/cm3, μ= 2.435 mm-1, F(000)= 1240, the final R = 0.0445, wR = 0.1082 and S = 1.021 for 5052 observed reflections with I>σ2(I).It consists of copper Ⅰ tetramer units and α-[Mo8O26]4- anions, which are further attached into a three-dimensional framework through hydrogen bonding and π-π stacking interactions.     

一种双肟四核铜(Ⅱ)配合物的合成、结构及热稳定性研究

由螯合双肟配体3,3′-二甲氧基-2,2′-[(1,3-亚丙基)二氧双(氮次甲基)]二酚(H₂L)与四水合苦味酸铜作用,合成了一种新的四核铜(Ⅱ)配合物 [Cu₄L₂(pic)₄(H₂O)₂]·2CH₃COCH₃·2H₂O(pic^-=苦味酸根)。用X-射线单晶衍射仪测定了该配合物的晶体结构：配合物属单斜晶系,P2₁/c空间群,由4个Cu^Ⅱ离子,2个四齿的L2-单元,4个配位的苦味酸根(pic^-),2个配位的水分子,2个结晶的丙酮分子和2个结晶的水分子组成。Cu^Ⅱ离子的配位数为6,都具有稍微扭曲的八面体结构。且配合物分子通过分子间O-H…O氢键作用形成了1个二维超分子结构。     

Synthesis and Crystal Structure of a Coordination Polymer [Zn（p-pdoa）（bbp）]n with a One-dimensional Helical Chain

The coordination polymer [Zn（p-pdoa）4（bbp）]n 1 （p-pdoa = p-phenylenedioxydiacetate dianion and bbp = 2,6-bis（benzimidazol-2-yl）pyridine） has been synthesized by hydrothermal method and characterized by elemental analysis, IR and X-ray single-crystal diffraction. The title complex crystallizes in the triclinic system, space group P1^- with a = 7.8383（2）, b = 12.6610（4）, c = 13.1792（5）A, a = 84.433（2）,β = 74.2980（1）, γ = 87.4290（1）°, V = 1252.93（7）A^3, Z = 2, Dc = 1.593 g/cm^3,/z = 1.038 mm^-1, F（000） = 616, the final R = 0.0361 and wR = 0.1139. The Zn（Ⅱ） atom assumes a distorted trigonal bipyramidal geometry, involving two carboxyl O atoms from two different p-pdoa ligands and three N atoms from the bbp ligand. The Zn（Ⅱ） atom is alternately interlinked by p-pdoa ligands in a bismonodentate mode into a helical chain with a long pitch of 12.661 A and the adjacent Zn…Zn distance of 11.056 and 12.245 A. There exists a 2D supramolecular framework linked by π-π stacking （3.312 A） between adjacent benzimidazoles of bbp ligands and intermolecular hydrogen-bonding interactions between the uncoordinated carboxylate oxygen atoms （O（2）, 0（5）） and the uncoordinated imidazolyl N atoms （N…O distances 2.706 and 2.786 A）. There also exist two interlayer π-π stacking interactions of 3.299 A between adjacent central pyridines of bbp ligand and 3.176 A between the phenyl groups of p-pdoa ligand. Such π-π stacking interactions extend the two-dimensional layers into a 3D supramolecular network.