Synthesis and Crystal Structure of [Zn(FcCOO)_2(2,2'-bipy)(H_2O)]_2·H_2O

A novel complex [Zn(FcCOO)2(2,2'-bipy)(H2O)]2·H2O (Fc = (η5-C5H5)Fe(η5-C5H4), 2,2'-bipy = 2,2'-bipyridine) has been synthesized and characterized by elemental analysis, IR and X-ray diffraction. It crystallizes in monoclinic system, space group P21/c with a = 6.8187(4), b = 21.7155(13), c = 19.7411(12) A, α = 90, β = 97.7420(10), γ = 90o, C64H58Fe4Zn2N4O11, Mr = 1413.28, V = 2896.4(3) A3, Dc = 1.620 g/cm3, Z = 2, F(000) = 1444, μ(MoKα) = 1.857 mm-1, R = 0.0523 and wR = 0.0982 for 3219 observed reflections (I > 2σ(I)). Structural analysis shows that the zinc atom is coordinated with three oxygen atoms from two ferrocenemonocarboxylates and one water molecule together with two nitrogen atoms from 2,2'-bipyridine, giving a distorted square-pyramidal coordination geometry. The complex molecules are linked to form an infinite one-dimensional chain by both intermolecular hydrogen bonds and π-π stacking interactions of the bipyridine rings.     

Synthesis,Crystal Structure,Fluorescence, Thermal Stability and Magnetic Properties of the Dinuclear Manganese(Ⅱ) Complex [Mn_2(L)_2(2,2'-bipy)_2(H_2O)_5]_2·3H_2O

A new dinuclear manganese complex [Mn2(L)2(2,2'-bipy)2(H2O)5]2·3H2O has been synthesized with Mn SO4·H2O, 2,2'-bibenzoic acid(H2L) and 2,2'-bipyridine(2,2'-bipy) in the mixed solvent ethanol and water. It crystallizes in monoclinic, space group P1 with a = 9.9944(10), b = 21.939(2), c = 25.628(3) ?, α = 108.429(3), β = 100.613(4), γ = 102.821(3)o, V = 4997.9(9) ?3, Dc = 1.355 g/cm3, Z = 2, F(000) = 2108, GOOF = 1.074, the R = 0.0626 and w R = 0.1531. The structure of the complex contains two [Mn2(L)2(2,2'-bipy)2] units, ten coordinated H2 O molecules and three uncoordinated H2 O molecules. The fluorescence, thermal stability and magnetic properties of the complex were investigated.     

Synthesis and Crystal Structure of [{Mn(IBG)(2,2'-bipy)(H_2O)}·4H_2O]_n

A novel MnⅡ complex [{Mn(IBG)(2,2'-bipy)(H2O)}·4H2O]n 1(H2IBG=isophtha-loylbisglycine and 2,2'-bipy = 2,2'-bipyridine) has been synthesized and characterized by singlecrystal X-ray diffraction,elemental analysis,IR spectra and thermogravimetric analysis.It crystallizes in monoclinic,space group P21/n,with a=13.667(2),b=14.045(2),c=14.195(2),β=101.483(3)°,V=2670.1(7)3,Z=4,C22H26N4O11Mn,Mr=577.41,Dc=1.436 g/cm3,F(000)=1196.0,μ(MoKα)=0.558 mm-1,the final R=0.0578 and wR=0.1460 for 2974 observed reflections with I2σ(I).In the structure,the MnⅡ atom is coordinated in a distorted octahedral environment arranged by one water molecule,one 2,2'-bipy ligand and two IBG ligands.     

Synthesis and Structure of anti-Configuration Complex [Cu(tssb)_2]·2[(H_3O)Cl]·4H_2O

1 INTRODUCTION The complexes of amino acid Schiff base have attracted considerable attention because of their bio- activities[1, 2]. Taurine is a special amino acid in be- ings, and recently the complexes of taurine conden- sation salicylaldehyde Schiff …     

Synthesis and Structure of a Manganese(Ⅱ) Complex: [Mn_2·(dinitrobenzoic acid)_4·(1,10-phen)_2]_n

The title compound, [Mn2·(dinitrobenzoic acid)4·(1,10-phen)2]n, has a linear chain struc- ture containing binuclear [Mn2·(dinitrobenzoic acid)4(1,10-phen)2] repeat units. It crystallizes in the tricli- nic system, space group P1 with a = 7.9261(8), b = 12.1329(15), c = 14.847(2) , α = 103.845(5), β = 101.424(5), γ = 92.618(4)o, Mr = 657.37, V = 1352.3(2)3, Z = 2, Dc = 1.614 g/cm3, F(000) = 666, μ = 0.567 mm-1, the final R = 0.0407 and wR = 0.1015 for 4081 observed reflections with I > 2σ(I). The Mn atom is six-coordinated by two N and four O atoms, forming a slightly distorted octahedral geometry. All Mn–O and Mn–N bond distances range from 2.093(2) to 2.310(2) . Two adjacent octahedral units are bridged together by two pairs of bi-monodentate carboxyl groups of different dinitrobenzoic acids to form an eight-membered ring with chair-typed configuration, thus generating a one-dimensional chain along the a axis.     

Synthesis and Structure of a Novel Macrocyclic Complex [Cd_2(phen)_4(phth)_2]·4H_2O

1 INTRODUCTION In recent years, extensively attention has been fo- cused on the design and synthesis of d10 metal- based complexes[1, 2]. A series of d10 metal-organic frame- works have been described not only because of their intriguing structures but also due to their ptential ap- plications in photoluminescent fields[3～7]. Although phthalate ligand was successfully used to design and synthesize a wide variety of metal complexes, those containing Cd(II) complex are less considered[8～…     

Synthesis and Structure of a Manganese(Ⅱ) Complex: [Mn2·(dinitrobenzoic acid)4·(1,10-phen)2]n

The title compound, [Mn2·(dinitrobenzoic acid)4·(1,10-phen)2]n, has a linear chain structure containing binuclear [Mn2·(dinitrobenzoic acid)4(1,10-phen)2] repeat units. It crystallizes in the triclinic system, space group P1- with a = 7.9261(8), b = 12.1329(15), c = 14.847(2)(A), α = 103.845(5), β =101.424(5), γ= 92.618(4)°, Mr= 657.37, V= 1352.3(2) (A)3, Z = 2, Dc= 1.614 g/cm3, F(000) = 666, μ =0.567 mm-1, the final R = 0.0407 and wR = 0.1015 for 4081 observed reflections with I ＞ 2σ(Ⅰ). The Mn atom is six-coordinated by two N and four O atoms, forming a slightly distorted octahedral geometry. All Mn-O and Mn-N bond distances range from 2.093(2) to 2.310(2)(A). Two adjacent octahedral units are bridged together by two pairs of bi-monodentate carboxyl groups of different dinitrobenzoic acids to form an eight-membered ring with chair-typed configuration, thus generating a one-dimensional chain along the a axis.     

Synthesis and Structure Characterization of a Manganese(Ⅱ) Complex With Eight Coordination Geometry: [Mn(O_2CMe)_2(phen)_2]

The title compound [Mn(O2CMe)2(phen)2] (phen = 1,10-phenanthroline) 1 has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal is of orthor- hombic, space group Pbcn, with a = 12.554(4), b = 10.168(3), c = 17.704(5) , V = 2259.7(12) 3, Z = 4, C28H22MnN4O4, Mr = 533.44, Dc = 1.568 g/cm3, F(000) = 1100, Rint = 0.0242, T = 293(2) K and μ = 0.631 mm–1. The final R = 0.0687 and wR = 0.1960 for 2046 observed reflections with I > 2σ(I). The structure of the complex consists of one Mn(II) core coordinated by two bidentate-bound CH3COO- groups and two η2-phen groups forming an eight-coordinate geometrical configuration.     

Synthesis and Crystal Structure of a Cyano-bridged Bimetallic Complex[La(betaine)_2(H_2O)_6Fe(CN)_6]·2H_2O

1 INTRODUCTION In the last decade, cyano-bridged Prussian Blueanalogues[1] have been intensively studied from theviewpoint of application as functionalized molecule-based magnets[2], chemical sensor materials[3], fluo-rescent materials[4] and zeolitic-type materials[5, , 6]etc. In 1976, a series of cyano-bridged three-dimen-sional rare earth hexacyanometalates(IIILnM(CN)6?nH2O (M = Fe or Cr, n = 4 or 5) were crystallized andsubjected to single-crystal X-ray analysis[7]. …     

Synthesis and Structure Characterization of a Manganese(Ⅱ) Complex With Eight Coordination Geometry: [Mn(O2CMe)2(phen)2]

The title compound [Mn(O2CMe)2(phen)2] (phen = 1,10-phenanthroline) 1 has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal is of orthorhombic, space group Pbcn, with a = 12.554(4), b = 10.168(3), c = 17.704(5) (A), V = 2259.7(12) (A)3, Z = 4, C28H22MnN4O4, Mr = 533.44, Dc = 1.568 g/cm3, F(000) = 1100, Rint = 0.0242, T = 293(2) K and μ = 0.631 mm-1. The final R = 0.0687 and wR = 0.1960 for 2046 observed reflections with I ＞ 2σ(I). The structure of the complex consists of one Mn(Ⅱ) core coordinated by two bidentate-bound CH3COO- groups and two η2-phen groups forming an eight-coordinate geometrical configuration.     

Synthesis,Structure and Characterization of a New Complex: [Mn(C_6H_(12)N_4)_2(H_2O)_4][Mn(H_2O)_6][SO_4]_2·6H_2O

A novel complex,[Mn(C_6H_(12)N_4)_2(H_2O)_4][Mn(H_2O)_6][SO_4]_2·6H_2O,was synthesized and hexagonal single crystals with centimeter-scale sizes were obtained by the method of solvent evaporation.It was characterized by elemental analysis,infrared spectrum,thermogravimetric analysis and X-ray single-crystal diffraction.The complex belongs to triclinic crystal system,space group P■ with a=9.3390(8),b=13.3520(13),c=16.3207(13)?,α=100.7160(3)°,β=90.1020(10)°,γ=109.9490(5)°,V=1874.9(3)?~3,Z=2,D_c=1.542 g/cm~3,M_r=870.64,μ=0.876 mm~(-1),T=293(2) K,F(000)=916 and S=0.990.The crystal structure determination displayed a distorted octahedral geometry around the manganese atom,which is bound to two nitrogen atoms from hexamethylenetetramine,acting as monodentate ligands,and to four aqua ligands.Variable-temperature magnetic measurements of the complex indicate the presence of weak antiferromagnetic interaction between manganese centers.     

Synthesis and Structural Characterization of a Ni(Ⅱ) Complex [Ni(H_2O)_4(4,4'-bipy)_2](hca)_2

1 INTRODUCTION The rational design and synthesis of new metal- organic frameworks have generated considerable interest in supramolecular chemistry and materials science owing to their intriguing structural diver- sities and potential applications as functional mate- rials[1～6]. Carboxylate-containing ligands have attrac- ted considerable attention because of the various coordination modes of carboxylate group, the ability to form hydrogen bonds and the potential applica- tions as functio…     

Synthesis and Crystal Structure of Complex [Pb(qina)_2(DMSO)]·H_2O

A novel complex [Pb(qina)2(DMSO)]·H2O was synthesized,of which qina-is the quinaldic acid radical and DMSO the dimethyl sulfoxide. Elemental analysis,IR spectra,and X-ray single-crystal diffraction were carried out to determine the composition and crystal structure. This complex belongs to monoclinic system,space group P121/n1,with a=7.1553(17),b=17.543(2),c=17.306(2) ,β=91.671(4)°,C22H20N2O6PbS,Mr=647.65,Z=4,V=2171.5(6) 3,Dc=1.981 g/cm3,μ=7.908 mm-1,F(000)=1248,–9≤h≤6,–23≤k≤19,–22≤l≤22,R=0.0221 and wR= 0.0488. Weak coordinate bond is formed between oxygen atom in DMSO and Pb(Ⅱ ) . There are also weak interactions,such as π-π interaction,hydrogen bonds and so on,among the complex molecules.     

Synthesis and Structure of a Novel Compound [Cu_2(EDTA)(Py)_2(H_2O)_2]·2H_2O

1 INTRODUCTION Multinuclear coordination compounds have attrac-ted much attention due to their distinctive optical, elec-tric and magnetic properties as well as enzyme ana-logue[1～4]. It is important for carboxylic acid to de-sign this compound[5～8]. EDTA is a useful titrant formetal determination because EDTA molecule is easyto coordinate with a metal atom (1:1). Other types ofEDTA-M compounds are seldom to know except Ln2-M3(EDTA)3(H2O)11?12H2O[5] and (UO2 )2EDTA[9]. …     

Syntheses and Structures of Two New Cobalt Supramolecular Complexes, [Co(4,4'-bipy)_2(H_2O)_4]· [Co_2(4,4'-bipy)3O(H_2O)_8]·2TST·2(4,4'-bipy)·4H_2 and [Co(4,4'-bipy)_2(H_2O)_4]DSNT'4,4'-bipy

Two new cobalt(Ⅱ) supramolecular complexes [Co(4,4'-bipy)_2(H_2O) _4]·[Co_2(4,4'-bipy)3-(H_2O) _8]·2TST-2(4,4'-bipy)·4H_2O 1 and [Co(4,4'-bipy) _2(H_2O) _4]DSNT·4,4'-bipy 2 based upon the assembly of Co(Ⅱ), 4,4'-bipyridine (4,4'-bipy) and two new multifunctional organic ligands, 2,4,6-tris(4-sulfophenyl-amino)-1,3,5-triazine (H_3TST) and 2,4-bis(p-sulfanilato)-6-diethylamino-1,3,5-triazine (H_2DSNT), have been prepared by hydrothermal method and characterized by elemental analysis, IR spectrum, and single-crystal X-ray diffraction. The crystal structure of 1 is of monoclinic, space group P2_(1/n) with α= 13.599(4), b = 18.988(6), c = 22.995(7) A, β = 90.273(6)°, V= 5938(3) A~3, Z = 4, C_(56)H_(59)CO_(1.5)N_(13)O_(17)S_3, M_r = 1370.74, D_c = 1.533 g/cm~3,μ = 0.613 mm~(-1), F(000) = 2842, GOOF = 1.018, the final R = 0.0796 and wR = 0.1498 for 9019 observed reflections with I > 2o(I). The crystal structure of 2 belongs to the monoclinic system, space group C2/c with α = 18.864(6), b = 14.283(5), c = 20.246(7) A, β = 107.799(6)°, V = 5194(3) A~3, Z = 4, C_(49)H_(52)CoN_(12)O_(10)S_2, M_r = 1092.08, D_c = 1.397 g/cm~3, μ= 0.480 mm~(-1), F(000) = 2276, GOOF = 1.059, the final R = 0.0665 and wR = 0.1900 for 4887 observed reflections with I> 2σ(I). The results of X-ray crystal structure analysis revealed that complexes 1 and 2 exhibit layered supramolecular frameworks stabilized by electrostatic interactions, π-π interactions and hydrogen bonds.     

Synthesis and Crystal Structure of a Novel Zinc Complex [Zn(OH_2)(HDPA)_2]·3H_2O

1INTRODUCTION In recent years,dicarboxylic acids have been wide-ly used as poly-dentate ligands involved in various metal chelation reactions to form transition or rare earth metal complexes with interesting properties in material science[1~3]and biological systems[4~7].For example,Kim,Y.and his coworkers focus on the syn-theses of copper(II)complexes containing ligands of malonate and pyrazine to study their electronic con-ductivity and magnetic property[8].The importance of Tr(II)/dic…     

Hydrothermal Synthesis and Crystal Structure of a New Manganese(Ⅱ) Complex with 2,4-Pyridine-dicarboxylic Acid and 2,2'-Bipyridine Ligands

A new metal-organic complex [Mn_2(PDC)_2(bipy)_2(H_2O)_2] (H_2PDC=2,4-pyridinedicarboxylic acid,bipy=2,2'-bipyridine) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,TG and single-crystal X-ray diffraction. The compound crystallizes in triclinic,space group P~(-)1 with α=7.376(3),b=9.990(4),c=11.950(5)(A),α=75.217(5),β=78.052(5),γ=70.655(5)°,V=796.0(5)(A)~3,C_(34)H_(26)Mn_2N_(6O)O_(10),M_r=788.49,D_c= 1.645 g/cm~3,μ(MoKa) = 0.866 mm~(-1),F(000)=235,Z=1,the final R=0.0425 and wR=0.0700 for 1971 observed reflections (Ⅰ > 2σ(Ⅰ)). In the crystal structure,the manganese atom is six-coordinated by two carboxylate oxygen atoms from two different PDC ligands,one aqua ligand,and three nitrogen atoms from 2,2'-bipy and PDC ligands,giving a distorted octahedral geometry. It exhibits a three-dimensional supramolecular network defined by O-H…O hydrogen-bonding interactions.     

Synthesis,Crystal Structure and Property of a Binuclear Copper Complex [Cu_2L_2(pht)_2]_2·H_2O

A new binuclear copper complex, [Cu2L2(pht)2]2·H2O(Hpht = 5,5-diphenylhydantoin, i.e. phenytoin; L = 2-diethylaminoethanol), has been synthesized by the solvothermal method, and characterized by elemental analysis, IR and single-crystal X-ray diffraction. The crystal belongs to the monoclinic system, space group C2/c with a = 31.918(3), b = 12.9222(15), c = 19.868(2) , β = 98.762(2)o, V = 8098.8(16) 3, Dc = 1.429 Mg/m3, Z = 4, F(000) = 3640, μ = 1.107 mm-1, R = 0.0560 and wR = 0.1276(I 2(I)). Each copper(Ⅱ) in a molecule is coordinated with N and O atoms from ligand L and N atom from ligand Hpht in a tetradentate manner. Moreover, two copper(Ⅱ) centers are bridged by two O atoms of hydroxyl groups from two L ligands to form a slightly distorted binuclear {Cu2O2} diamond configuration. In addition, the interaction of this complex with calf thymus DNA(CT-DNA) was investigated by UV-vis spectrum and viscometry, and the complex may bind to DNA through intercalation.     

Synthesis and Crystal Structure of a Cyano-bridged Bimetallic Complex:[NdFe(CN)_6(DMF)_4(H_2O)_3]H_2O

1 INTRODUCTION In recent years, cyano-bridged heterometallic coordination compounds have inspired remarkable attention due to their rich and interesting structures and magnetic behaviors. However, these studies were mainly focused on the transition metals. Although several unusual cyanide bridging lanthanide-transition metal complexes have been re- ported[1～6], this field continuously possesses tre- mendous researching potentialities. As regardsPrussian Blue lanthanide complex, divers…     

Synthesis, Crystal Structure and Luminescence Property of [Co(hmz)_2(H_2O)_4]·2H_2O

A new mononuclear Co(II) complex, [Co(hmz)2(H2O)4]·2H2O, has been synthesized by the reaction of Co(CH3COO)2·4H2O with 1-(4-hydroxyphenyl)-5-mercaptotetrazole (Hhmz). It crystallizes in the monoclinic system, space group P21/n with a = 13.502(5), b = 6.718(3), c = 13.972(6) , β = 117.532(4)o, V = 1123.9(8) 3, Z = 2, M r = 553.45, F(000) = 570, Dc = 1.635 g/cm3, μ = 1.008 mm–1, the final R = 0.0272 and wR = 0.0684 for 2194 observed reflections (I > 2σ(I)). The Co(II) is six-coordinated by two nitrogen atoms from two hmz–1 ligands and four water molecules, forming an octahedral geometry. The intermolecular hydrogen bonding and offset-panel π-π stacking interactions between the adjacent molecules extend the compound into a three- dimensional supramolecular framework. The title compound emits strong blue fluorescent light (λem(max) = 427 nm) at room temperature and is red-shifted compared with free ligand Hhmz (λem(max) = 342 nm).