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 Electrochemical Properties of [Ni(phen)_3]·(m-nitrobenzoic acid)_2·(H_2O)

A new nickel(II) coordination complex [Ni(phen)3]·(m-nitrobenzoic acid)2·(H2O) was synthesized by self-assembly of m-nitrobenzoic acid, 1,10-phenanthroline and nickelous per- chlorate. It crystallizes in the monoclinic system, space group C2/c, with a = 2.4596(6), b = 1.2124(3), c = 1.9824(5) nm, β = 97.088(5)o, V = 5.866(3) nm3, Dc = 1.474 g/cm3, Z = 4, Mr = 1301.82, μ(MoKα) = 0.417 mm-1 F(000) = 2688, R = 0.0493 and wR = 0.1025. Structural deter- mination indicates that the nickel(II) ion is coordinated with six nitrogen atoms from three phens, giving a distorted octahedral coordination geometry. The cyclic voltametric analysis shows that the electron transfer in the electrode reaction is irreversible.     

Crystal Structure of Bridged Dimer Complex of [Yb (H_2O)) (acac)_2 (Ac)]_2

1INTRODUCTIONTheacetylacetonatoisanexcellentbidentateligand.Withittherareearthmetalionscanformsomeseriesofcomplexes,suchasLn(acac)3.nH,O(n=1～4)andLn-(acac)4etc.[1-5i.lntheeventletasampleofthecomplexLn(acac)3.3H,Odis-solveinacetylacetonewhichmixeswithaceticacidforrecrystallization.Asaresultasubstitutionreactionofligandsinthesolutionarises.Anacetylacetonatoandacoor-dinatedwatermolecu1eofLn(acac),.3H,Oaresubstitutedbytwoacetatosandanon-coordinatedwatermoleculeisremoved.Amixedligandandbr…     

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.     

Hydrothermal Synthesis,Crystal Structure and Electrochemical Properties of Complex [Cd(phen)_3]·(ClO_4)_2·(p-MBA)_2·(H_2O)_2

One new cadmium complex [Cd(phen)3]·(ClO4)2·(p-MBA)2·(H2O)2 has been hydro-thermally synthesized by reacting p-methylbenzoic acid (p-MBA),1,10-phenanthroline (phen) and cadmium perchlorate. It crystallizes in the triclinic system,space group P1,with a=1.2809(3),b= 1.3431(3),c=1.3734(3) nm,α=84.259(4),β=71.603(3),γ=74.424(3)o,V=2.1594(8) nm3,Dc= 1.532 g/cm3,Z=2,F(000)=1008,μ=0.697 mm-1,R=0.0646 and wR=0.1648. The crystal structure shows that the cadmium ion is coordinated with six nitrogen atoms from three 1,10-phenanthroline molecules,forming a distorted octahedral coordination geometry. The result of electrochemical property analysis shows that the electron transfer in the electrode reaction is irreversible.     

Crystal Structure of Binuclear Manganese(Ⅲ) Complex with Schiff-base Ligand,〔Mn_2(C_(22)H_(22)N_2O_2)_2(EtOH)_2 (bipy)〕(ClO_4)_2

1INTRODUCTIONThecoordinationchemistryofmanganeseinthe 2, 3and 4oxidationstatesisreceivingconsiderableattentionduetothebio1ogicalimportanceoftheseions(1i.Anattractivesystemformode1ingthestructureandreactivityofsomemanganoenzymesisbinuclearMn(M)complexescontainingpolydentateSchiffbaseligands.Bothphotochemicalwateroxidationtogeneratedioxygen"'andacid-pro-motedhydrogenperoxideproductiont3ihavebeenreportedforsuchdimer.Wereportherethestructureofthetitlecomplex.2EXPERIMENTAL2.lSynthesisof…     

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 and Crystal Structure of [Cis-1,10phenanthroline-palladium(Ⅱ)(THF)_2]dinitrate (THF = Tetrahydrofuran)

1 INTRODUCTION The coordination chemistry of Pd(Ⅱ) com- plexes with didentate nitrogen coordination ligands has been extensively studied for a few decades[1]. Pd(Ⅱ) trends to bond to the didentate nitrogen in cis-mode and such complexes have potential usage in the emerging area of self-assembly[2]. We will report herein the synthesis and crystal structure of a cis-coordinated mononuclear Pd(Ⅱ) complex with one 1,10-phenanthroline and two THF as ligands, 1. 2 EXPERIMENTAL 2. …     

Synthesis and Crystal Structure of the Heteropolymate Compound Na_3H_2[Ce_3(H_2O)_(18)Bi_2W_(22)O_(76)]·23H_2O

1 INTRODUCTION As a rich remarkable class of inorganic cluster systems, polyoxometalates continue to be the focus of significant attention in the 21th century because of their various and alluring topologies as well as their unusual physicochemical prope…     

Crystal Structure Analysis of Tetras[L-tris(ethylenediamine) cobalt(Ⅲ)] tris[hexacyanoruthenate(Ⅱ)]

1 INTRODUCTION The tris(ethylenediamine) cobalt (Ⅲ) complex in which there are L and D configurations is one of the very interest cations due to the chirality among research complexes and the characterization of reaction on the ion-pair charge-transfer transitions. It has been mentioned in a lot of examples on the chirality and the structure, such as [L-Co(en)3]- [?Co(edta)]2Cl?0H2O[1], [(+)DCo(en)3]Cl3稨2O[2], [(+)-Co(en)3?-)-Cr(en)3]Cl?.1H2O[3], [()-Co(en)3] (SCN)3[4], [(+)D…     

Synthesis and Crystal Structure of a New Praseodymium(Ⅲ)-Copper(Ⅱ) Polymeric Complex:〔Pr_2Cu_3(L~1)_6〕_n(H_2L~1=NH｛CH_2COOH｝_2)

ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｓｙｎｔｈｅｓｉｓｏｆｐｏｌｙｎｕｃｌｅａｒｃｏｐｐｅｒ ｌａｎｔｈａｎｏｉｄｃｏｍｐｌｅｘｅｓｉｓｏｆｓｐｅｃｉａｌｉｎｔｅｒｅｓｔｆｏｒｓｅｖ ｅｒａｌｒｅａｓｏｎｓ〔１－４〕．Ｔｈｅｓｅｃｏｍｐｌｅｘｅｓａｒｅｉｍ...     

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...     

A Cadmium(II) Coordination Polymer: Crystal Structure and Fluorescent Property of [CdCl_2(4,4''''-bipyridine)]_ ∞

1 INTRODUCTION The metal-organic coordination polymers have proved to be promising in developing new mate- rials[1]. It is crucial to select or synthesize the suita- ble bridging organic ligand. Some simple rigid li- gands are skillfully employed[2～4].…     

Synthesis and Crystal Structure of [{Cd(hmbdc)(H_2O)_3}·2H_2O]_n

A novel coordination polymer [{Cd(hmbdc)(H2O)3}·2H2O]n (hmbdc = 5-hydroxy- isophthalic acid) has been synthesized and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/c, with a = 9.599(3), b = 18.699(5), c = 7.557(2) , β = 108.198(4)°, V = 1288.6(6) 3, Z = 4, Mr = 382.60, Dc = 1.972 g/cm3, F(000) = 760, μ = 1.740, the final R = 0.0555 and wR = 0.0995 for 1732 observed reflections with I > 2σ(I). The structural analysis shows that the intermolecular hydrogen bonds and π-π interactions result in a three-dimensional supramolecular framework.     

Syntheses and Crystal Structure of Erbium(Ⅲ) Coordination Polymers with Two Flexible Double Betaine Ligands

1INTR0DUCTI0NLanthanidecarboxylatecomplexeshavebeenwidelystudiedt1iandm0starefoundtoexhibitavarietyofdimericorinfinitechainstructures.Recentstudiesinourlaboratoryhavedem0nstratedthattheprototypetertiaryaminebetaine(Me,N CHzC0z-)anditsderivativesareusefulinthegenerationoflanthanidecarb0xylate-likecomplexeswithnewstructuralfeaturesduetotheiroverallchargeneutralityandpossibleinclusionofvariouskindsofcounteranionsinthestructuret2~4i.Thelan-thanidecomplexesisolatedsofarhavebeenfoundtobemononu…     

Synthesis,Crystal Structure and Fluorescent Property of a Lanthanum(Ⅲ) Complex Coordinated with Quinolinyloxy Acetamide Ligand

A novel lanthanum(Ⅲ) complex, [LaL2(NO3)3]·H2O(1) based on L(L = N-(naphthalene-1-yl)-2-(quinolin-8-yloxy)acetamide), was synthesized and characterized by X-ray diffraction. The crystal of 1 belongs to the monoclinic system, space group C2 c with Mr = 1017.69, a = 25.1438(17), b = 13.5950(9), c = 18.2349(12) A, β = 132.4980(10)°, V = 4595.8(5) A3, Z = 4, Dc = 1.471 Mg/m3, F(000) = 2056, μ = 1.004 mm-1, R = 0.0588 and wR = 0.1402. The central La(Ⅲ) ion is coordinated to four oxygen atoms, two nitrogen atoms from two independent acetamide ligands and six oxygen atoms from three nitrate anions, possessing a distorted icosahedron coordination geometry. In the crystal of 1, intermolecular N–H···O hydrogen bonds linked the molecules into chains along the c axis. In solid state and CH3 CN solution, complex 1 exhibits stronger fluorescent emission than the ligand L.     

Synthesis and Crystal Structure of [Cu (C_8H_4O_2F_3S) (2, 2' -bipy) ]

1INTRODUCTIONCoppercomplexesarewidelyusedascatalystsinthedecompositionofdisubsti-tutedperoxides"'-Theelectronicstructureandbondingatthecatalystscanbeprof-itablypursuedbystudyingmodelcomplexes.Generally,theCu(I)complexesareob-tainedbyreactionofCu(l)saltswithligands.Wereporthereamethodofpreparingcopper(I)complexbythereactionofCupowderwith2-thenoyltrifluoroacetone,2,2'-bipyinmethanol.2EXPERIMENTALReactionwascarriedoutundernitrogenatmosphere.2,2-bipy(1mmol)wasaddedtoamixtureof2-thenoyl…     

Hydrothermal Synthesis and Crystal Structure of a New Zero-dimensional Complex: [Zn(H_2BPTC)(phen)_2]_n·3nH_2O

A new metal-organic coordination complex [Zn(H2BPTC)(phen)2]n·3nH2O (BPTC = 3,3′,4,4′-benzophenone tetracarboxylate, phen = 1,10-phenanthroline) 1 has been obtained from hydrothermal reaction and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. In compound 1, the zinc cation is hexa-coordinated with two carboxylate oxygen atoms from one H2BPTC ligand and four nitrogen atoms from two different phen ligands, showing a slightly distorted octahedral geometry. Crystal data: C41H30N4O12Zn, Mr = 836.06, monoclinic, P21/c, a = 14.2714(9), b = 16.9386(10), c = 15.0151(9) , β = 101.3420(10)o, V = 3558.8(4) 3, Dc = 1.560 g/cm3, μ(MoKα) = 0.766 mm-1, F(000) = 1720, Z = 4, R = 0.0439 and wR = 0.1157 for 4123 observed reflections with I > 2σ(I).     

Synthesis, Crystal Structure and Photoluminescent Property of a Novel Silver(Ⅰ) Compound {[Ag(bpp)]2(Hphth)(NO3)·(H2O)2}n

Self-assembly of Ag(Ⅰ) nitrate, 1,3-bis(4-pyridyl)propane (bpp) and phthalic acid monopotassium salt (KHphth) in CH3OH-H2O solution produced the title complex,{[Ag(bpp)]2(Hphth)(NO3)·(H2O)2}n, which was characterized by single-crystal X-ray diffraction,elemental analysis, IR spectrum, and photoluminescent spectrum. Single-crystal X-ray analysis revealed that the complex crystallizes in a monoclinic system, space group P21/c, with α =15.4174(5), b = 8.6398(2), c = 25.2466(8) (A), β = 91.072(1)°, V = 3362.34(17) (A)3, Z = 4,C34H37N5O9Ag2, Mr = 875.43, Dc = 1.729 g/cm3, μ = 1.228 mm-1, F(000) = 1768, the final R =0.0749 and wR = 0.1580 for 5754 reflections with I ＞ 2σ(I). The Ag atom is coordinated by two N atoms from two bpp molecules in an approximately linear geometry. The Ag(Ⅰ) ions are linked by the bpp molecules to form one-dimensional zigzag chains propagating along the c axis. The Hphth-and nitrate counter-ions are bridged by solvent water molecules through hydrogen bonds to generate a one-dimensional chain extending along the b axis. Electrostatic interactions between cations and anions, extensive hydrogen bonds and π-π interactions are responsible for the three-dimensional supramolecular structure. In the solid state, the compound exhibits blue photoluminescence with the maximum at 436 nm upon excitation at 344 nm.