Synthesis and Structure of bis(μ-2-aminopyridine N-oxide)-bis[dichlorocopper(II)]

1 INTRODUCTIONMany complexes of 2-aminopyridine N-oxide (apo) have been characterized by infrared spectra, X-ray powder diffraction spectra, and by magnetic measurements and electronic spectra at liquid nitrogen temperature, but very few of them are their crystal X-ray studies[1~3]. Recently, a number of bridged binuclear copper (II) complexes have been reported, some of which have important potential applications in bioinorganic chemistry and materials[4~6]. Particularly, the complexes …     

Preparation and Crystal Structures of LaCl_3（12－crown－4）（MeOH）and［LaCl_3（phen）_2（H_2O）］·MeOH

Ｐｒｅｐａｒａｔｉｏｎ　ａｎｄ　Ｃｒｙｓｔａｌ　Ｓｔｒｕｃｔｕｒｅｓ　ｏｆ　ＬａＣｌ_３（１２－ｃｒｏｗｎ－４）（ＭｅＯＨ）ａｎｄ［ＬａＣｌ_３（ｐｈｅｎ）_２（Ｈ_２Ｏ）］·ＭｅＯＨＭａｏＪｉａｎｇ－Ｇａｏ（ＦｕｊｉａｎＩｎｓｔｉｔｕｔｅｏｆＲｅｓｅａ...     

Synthesis and Crystal Structure of a Dinuclear Cu(Ⅱ) Complex [Cu(C13H9N2O)Cl]2·(CH3CN)2 with Ligand 2-Benzimidazol

A new dinuclear copper complex, [Cu(C13H9N2O)Cl]2·(CH3CN)2 (C30H24Cl2Cu2N6O2),has been synthesized and characterized by X-ray structure determination. It crystallizes in the triclinic system, space group P1-, with a = 7.6677(14), b = 9.2375(17), c = 11.227(2) (A), α = 81.338(3),β= 88.173(4), γ = 66.199(3)°, V = 718.9(2) (A)3, Z = 1, Mr = 698.53, F(000) = 354, Dc = 1.613 g/cm3,μ(MoKα) = 1.705 mm-1, the final R = 0.0645 and wR = 0.1364 for 2474 unique reflections with 1809 observed ones (I＞ 2σ(Ⅰ)). In the title complex, each copper(Ⅱ) atom is located at the center of a distorted tetrahedron consisting of four coordinate atoms (one nitrogen atom, two oxygen anions,and one chlorine atom). Two copper(Ⅱ) atoms are bridged by two oxygen anions (O(1) and O(1a)) of two phenolates to form a Cu(Ⅱ)-Cu(Ⅱ) binuclear entity, and the distance between two copper(Ⅱ)atoms is 3.0144(15) (A).     

Synthesis and Structure of a New Dimanganese Complex [Mn2(μ-OAc)2(phen)4](ClO4)2

A dinuclear manganese(II) complex, [Mn2(μ-Oac)2(phen)4](ClO4)2 1 (phen = phenanthroline), has been prepared by the reaction of Mn(Oac)2·4H2O, phen, tartaric acid and NaClO4·H2O in MeOH/H2O solution. The crystal structure has been determined by X-ray diffraction. The crystal is of monoclinic, space group P21/c with a = 9.6052(4), b = 14.2353(7), c = 18.8893(8)(A),β= 96.584(1)°, C52H38Cl2Mn2N8O12, Mr = 1147.68, V = 2565.8(2) (A)3, Dc = 1.486 g/cm3, F(000) = 1172, μ = 0.668 cm-1 and Z = 2. The final refinement gave R = 0.0605 and wR = 0.1619 for 3203 reflections with I > 2σ(I). The complex contains a dinuclear [Mn2(μ-Oac)2(phen)4]]2+ cation located at a centre of symmetry with two syn-anti acetate bridges between the Mn atoms. Each Mn atom is coordinated by four N atoms from two chelating phen ligands and two O atoms from a pair of bridging acetate groups to furnish a distorted octahedral geometry. Two ClO4 anions exist around the cation [Mn2(μ-Oac)2(phen)4]2+as counter ions.     

A New Dinuclear Cu(Ⅱ) Complex of a Ligand with Benzimidazole Group - Synthesis and Crystal Structure

A new dinuclear copper complex, [Cu(C9H11N3)Cl2]2(C18H22Cl4Cu2N6), has been synthesized and characterized by X-ray structure determination. It crystallizes in the triclinic P-1 space group with a = 7.526(3), b = 9.473(4), c = 9.535(3)(A), α = 117.214(10), β = 108.251(9), γ = 91.560(6)°, V = 562.3(4)(A)3, Z = 1, Mr = 591.30, F(000) = 298, Dc = 1.746 g/cm3, μ(MoKα) = 2.385 mm-1, the final R = 0.0577 and wR = 0.1248 for 2188 unique reflections with 1629 observed ones (Ⅰ＞ 2σ(Ⅰ)). In the title complex, each copper(Ⅱ) atom is located at the center of a distorted trigonal bipyramid of five coordination atoms (two nitrogen and three chlorine atoms). Two copper(Ⅱ) atoms were bridged by two chlorine anions (Cl(2) and Cl(2a)) to form a Cu(Ⅱ)-Cu(Ⅱ) binuclear entity with the distance between two copper(Ⅱ) atoms of 3.398 (A).     

Synthesis and Crystal Structure of Fe（aapo）2Cl3 （aapo=2—Acetylamino Pyridine N—Oxide

1INTRODUCTIONComplexesofpyridineN-oxideligandshavereceivedmoreandmoreattention,andwehavereportedsomeofthemcontainingadonorsubstituteatthe2-positioninanattempttobroadentherangeofpyridineN-oxidecomplexes[1,2].MostcrystalstructuresofpyridineN-oxidesreportedareaboutdivalenttransitionmetalionsM(Ⅱ)[1～4],withonlyaveryfewontrivalenttransitionmetalionsM(Ⅲ)[5].Asthecontinuingworkofsystematicresearch,herewewillpresentthesynthesisandstructureofthetitlecompound.Toourknowledge,itisthefirstexamplet…     

Synthesis and Crystal Structure of a One-dimensional Azido-bridged Manganese (II) Compound [Mn(N3)2(H2O)3·C6H12N4]n

A new one-dimensional azido-bridged manganese compound has been prepared and structurally characterized by X-ray diffraction. The complex [Mn(N3)2(H2O)3·C6H12N4]n crystallizes in space group Pnma with a = 6.5252 (5), b = 9.3226(7), c = 22.2070(15)(A), V = 1350.89(17)(A)3, Z = 4, Mr = 333.24, Dc = 1.639 g/cm3, μ= 1.005 mm-1 and F(000) = 692. The final refinement gave R = 0.0328 and wR = 0.0777 for 1085 observed reflections with I > 2σ(I). The structure contains [Mn- (N3)2(H2O)3]n polymeric chains and uncoordinated hexamethylenetetramine (HMTA) molecules with Mn/HMTA molar ratio of 1:1. The Mn atoms are bridged by end-to-end azido ligands to construct one-dimensional zig-zag infinite chains. Each Mn atom is six-coordinated by three N atoms of three azido ligands and three water O atoms, resulting in an octahedral geometry. Extending hydrogen- bonding interactions involving water O atoms, azido and HMTA N atoms link the chains and HMTA molecules into a three-dimensional network.     

Synthesis and Structural Characterization of {[Mn(phen)_2(OAc)(H_2O)]ClO_4}_2H_2O

1 INTRODUCTION Chemistry of manganese cluster has become an attractive research field because of the involvement of manganese in several biological redox-active sys- tems[1,2], especially in the oxygen-evolving complex (OEC) of photosystem Ⅱ (PSⅡ) in green plants[3]. It was thought that the coordination environment of Mn in OEC contains O and N donors, and the bind- ing of aqua to the Mn site may be important to the oxidation of aqua for the evolution of dioxygen[4, 5]. In recent …     

Synthesis and Crystal Structure of a One-dimensional Azido-bridged Manganese (II) Compound [Mn(N_3)_2(H_2O)_3·C_6H_(12)N_4]_n

1 INTRODUCTION The azide anion is a good bridging ligand for di- valent metal ions to form discrete, one-dimensional, two-dimensional or three-dimensional complexes. In recent years, these complexes have drawn consider- able attentions for their interesting magnetic charace- ristics which attribute to the efficient magnetic coup- ling ability of the azido bridges[1]. When the azide anion acts as a bridging ligand, two typical modes are adopted: end-to-end (EE, μ1, 3) or end-on (EO, μ1…     

2，6-二氯苯甲酸桥联的双核锰配合物的水热合成与晶体结构

A dinuclear manganese(Ⅱ) complex, [Mn₂(L¹)₂(phen)₄]·(ClO₄)₂ (1), has been synthesized and structurally characterized (HL¹=2,6-dichlorobenzoic acid, phen=1,10-phenanthroline). It crystallizes in triclinic system, space group P1 with a=1.112 3(4) nm, b=1.378 2(4) nm, c=2.085 7(3) nm, α=93.768(2)°, β=90.606(10)°, γ=95.606(3)°, V=3.174 8(15) nm³, Z=2, C₆₂H₃₈C₁₆Mn₂N₈O₁₂, M_r=1 409.58, D_c=1.475 g·cm^-3, μ=0.718 mm^-1, F(000)=1 428, R=0.064 3, wR=0.138 3. In the crystal the manganese atom is six-coordinated by two oxygen atoms from two different 2,6-dichlorobenzolate molecules and four nitrogen atoms from two 1,10-phenanthroline molecules, completing an octahedral geometry. CCDC: 692296.     

Synthesis and Crystal Structure of an Inclusion Compound Mn(SCN)2(H2O)4(2C6H12N4

A mononuclear manganese complex Mn(SCN)2(H2O)4(2C6H12N4 (C14H32O4N10MnS2, C6H12N4 = hexamethylenetetramine) has been synthesized. The molecular and crystal structures were determined by single-crystal X-ray diffraction. The crystal is of tetragonal, space group P42/mnm with a = 9.5591(7), b = 9.5591(7), c = 13.8253(15) (A), V = 1263.31(19) (A)3, Z = 2, Mr = 523.56, Dc = 1.376 g/cm3, μ = 0.727 mm-1, F(000) = 550, Rint = 0.0302, T = 293(2) K, R = 0.0380 and wR = 0.1184 for 549 observed reflections with I > 2σ(I). In the crystal the manganese atom is six-coordinated by two nitrogen atoms from isothiocyanato anion and four oxygen atoms from water molecules, completing an octahedral geometry. Hexamethylenetetramine molecules are included in the lattice and connected to Mn(SCN)2(H2O)4 by hydrogen bonding and S...S interac- tions to form a three-dimensional supramolecular architecture.     

一些Ag+、Cu+簇的合成和结构研究

由于银,铜簇合物有助于催化理论的研究,近20年来,许多学者对它们的合成方法、成簇规律和结构特点进行了许多探索。本文报道了[Me_4N]_6[Ag_6[S_2C=C(CN)_2)_6]·H_2O(Ⅰ)、[Et_4N]_4[Cu_8(S_2C=C(CN)_2)_6](Ⅱ)和[Me_4N]_4[Cu_5Ag_3(S_2C=C(CN)_2)_6]·H_2O(Ⅲ)的化学合成,化合物(Ⅰ)和(Ⅱ)的晶体和分子结构,以及从化合物(Ⅲ)的ICP元素分析和红外光谱分析,探讨它的结构特征。     

Synthesis and Crystal Structure of [Mn(DPMT)2Cl2(H20)2]

The title compound [Mn(DPMT)2Cl2(H2O)2] (DPMT = 1 -[[2-(2,4-dichlorophenyl)-1,3-dioxolan-2-yl]methyl]-1H-1,2,4-triazole) was synthesized by the reaction of MnCl2-4H2O and DPMT in ethanol solution and its structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P2/c with a=23.913(4), b=7.8883(13), c=8.6291(14) (A),β=95.816(3)°,V=1619.4(5)(A)3,Z=2,C24H26Cl6MnN6O6 Mr=762.15, Dc=1.563 g/cm3, μ=0.950 mm'1, S=1.045, F(000)=774, R=0.0462 and wR=0.0981. The molecular structure is a centrosymmetric conformation, and two ligands are symmetrically located on both sides of the Mn atom. The manganese atom is surrounded by two nitrogen atoms from ligands, two chlorine atoms and two oxygen atoms from water molecules to form a slightly distorted octahedral geometry.     

Triply-bridged Dicopper(Ⅰ)Complex of Bis(diphenylphosphino)acetylene with a Helical Coordination Cage

<正>Self-organization of copper (I) ion with bridging ligand bis(diphenylphosphino)-acetylene resulted in the isolation of a dinuclear copper ( I ) complex [Cu2(μ-Ph2PC≡ CPPh2)3(MeCN)2](ClO4)2·Et2O. Structural analysis indicated the existence of a helical coordination cage, in which two copper (I) atoms are bridged triply by the linear diphosphine Ph2PC≡CPPh2 with the CuACu separation of 6.231 A. The copper (I) atom is in an approximately tetrahedral environment with a NP3 coordination chromophore. The complex crystallizes in the triclinic, space group P 1 with a = 13.8456(2), b = 16.6010(1), c = 18.9215(3) A, α = 98.289(1), β = 91.232(1), γ = 106.496(1)°, V = 4117.60(9) A3, Z = 2, C86H82Cl2N2O9P6Cu2, Mr= 1659.37, Dc= 1.338 g/cm3, F(000) = 1708, μ = 0.754 mm-1, the final R = 0.0688 and wR = 0.1940 for 11692 reflections with I>2σ(I).     

Synthesis and Structure of Bis（indene—1,2,3—trione 2—oximato）bis （aqua）Mn（Ⅱ）：Mn（C9H4NO3）2（H2O）2

1 INTRODUCTION The interest in the complexes of transition metals with ligands ketoxime[1, 2] as potential models for metal binding sites in ferroverdin[3, 4] has prompted the investigation on the structures and the overall coordination geometry of the metal centers in these complexes. Oxime derivatives are interesting ligands since the ketoximes are found to chelate transition metals through the N (oxime) and O (ketone) atoms[5, 6]. However, monodentate coordination via only one O or …     

Synthesis and Crystal Structure of Binuclear Silver(Ⅰ)Complex with 2-nitro-(2-pyridylsulfanylmethyl)benzene

The reaction of 2-nitro-(2-pyridylsulfanylmethyl)benzene L with silver nitrate produces a centrosymmetric binuclear complex bis(2-nitro-(2-pyridylsulfanylmethyl)benzene-N,S)-bis(nitrato-O,O)-disilver(Ⅰ), [AgLNO3]2 1. The crystal is of triclinic, space group P1, with a = 7.383(3), b = 8.340(3), c = 12.003(4) A, a = 95.069(6), β = 93.498(5), γ = 102.734(6)°, C24H2oAg2N6-O10S2, Mr= 832.32, V= 715.6(4) A3, Z = 1, Dc = 1.931 g/cm3, F(000) = 412, μ = 1.581 mm-1, R=0.0351 and wR = 0.0749 Each silver atom is tetrahedrally coordinated by two O atoms from bidentate nitrate, one S atom from a ligand and one N atom from another ligand. Furthermore, AgAg interactions have been observed in the complex.     

Synthesis and Crystal Structure of a Novel Tetranuclear Manganese(II) Complex with a Tripodal Peptide Ligand

1 INTRODUCTION Amides play an important role in the evolution ofnature. The amidate participates in the coordinationof iron with the ligands containing biomolecules, suchas antitumor drug bleomycin[1] and nitrile hydra-tase[2]. Bleomycin is a clinically useful antitumoragent which catalyzes the cleavage of oxidative DNAand oxidizes a number of organic substrates with di-oxygen or H2O2 . This has raised more interest in [3]the coordination of amide complexes[4, . …     

Synthesis and Crystal Structure of a Dinuclear Cu(Ⅱ) Complex [Cu(C_(13)H_9N_2O)Cl]_2·(CH_3CN)_2 with Ligand 2-Benzimidazol

A new dinuclear copper complex, [Cu(C13H9N2O)Cl]2·(CH3CN)2 (C30H24Cl2Cu2N6O2), has been synthesized and characterized by X-ray structure determination. It crystallizes in the tricli- nic system, space group P1, with a = 7.6677(14), b = 9.2375(17), c = 11.227(2) , α = 81.338(3), β = 88.173(4), γ = 66.199(3)o, V = 718.9(2) 3, Z = 1, Mr = 698.53, F(000) = 354, Dc = 1.613 g/cm3, μ(MoKα) = 1.705 mm-1, the final R = 0.0645 and wR = 0.1364 for 2474 unique reflections with 1809 observed ones (I > 2σ(I)). In the title complex, each copper(II) atom is located at the center of a distorted tetrahedron consisting of four coordinate atoms (one nitrogen atom, two oxygen anions, and one chlorine atom). Two copper(II) atoms are bridged by two oxygen anions (O(1) and O(1a)) of two phenolates to form a Cu(II)–Cu(II) binuclear entity, and the distance between two copper(II) atoms is 3.0144(15) .     

钒氧配合物[VOL(C9H6NO)]·CH2Cl2的合成与晶体结构

A oxovanadium(Ⅴ) complex of [VOL(C₉H₆NO)]·CH₂Cl₂[H₂L=2-hydroxy-1-naphthaldehyde 4-methoxy-benzoylhydrazone, C₉H₆NO^-=8-hydroxyquinoline anion] has been synthesized and characterized by elemental analyses, IR and single crystal X-ray diffraction. The crystal crystallizes in triclinic system, the space group is P1, with the crystal cell parameters a=1.087 0(2) nm, b=1.107 1(2) nm, c=1.269 3(3) nm, α=67.84(3)°, β=79.26(3)°, γ=73.85(3)° and V=1.353 1(6) nm³ , M_r=614.34, R=0.0503, wR=0.1409. The V(Ⅴ) atom is six-coordinated by one O atom of oxo group, two O atoms and one N atom of the tridentate hydrazone ligand, as well as one N atom and one O atom of 8-hydroxyquinoline ligand, thus defining a distorted octahedral VO(ONO)(NO) geometry. A two-dimensional supramolecular layer structure is formed through π-π stacking interactions. CCDC: 268672.     

Synthesis and Crystal Structure of Bis-(2,2'''' bipyridyl)-2-pyrimidinethiolate-Ni(Ⅱ) Complex

1 INTRODUCTION The design of metal complexes of bipyridine is one of the most highlighting topics in molecular materials with specific optical, electronic and mag- netic properties. What studied and well-documented most widely are those of the d6 metal polypyridines, and so are the d8 and d10 metal complexes with rich luminescence behaviour[1] very recently, which can be beneficial to the design of unique functional ma- terials. Currently our interest is to design lumine- scent heteronuc…