Synthesis and Crystal Structure of a Novel Zinc Complex[Zn(OH2)(HDPA)2]·3H2O

A new complex [Zn(OH2)(HDPA)2]·3H2O 1 (H2DPA = 2,6-pyridine-dicarboxylic acid) has been prepared at room temperature from the reaction of zinc(II) chloride and 2,6-pyri- dine-dicarboxylic acid in mixed solvent of H2O and EtOH with pyridine, and characterized by X-ray analysis and thermal analysis, exhibiting that the coordination geometry of Zn(II) ion is an octa- hedron. Crystal data: ZnC14H16N2O12, Mr = 469.66, monoclinic, P21/n, a = 7.0067(3), b = 23.8215 (12), c = 10.7404(3)(A), β = 99.823(2)°,V = 1766.40(13)(A)3, Z = 4, Dc = 1.766 g/cm3, F(000) = 960, μ = 1.463 mm-1, R1 = 0.0462 and wR2 = 0.0884 (I > 2σ(I)).     

Synthesis and Crystal Structure of a Novel Complex [Ag(NIT3Py)_3]·(ClO_4)(H_2O)

1 INTRODUCTION Nitronyl nitroxide radicals (NITR), stable organic radicals, have played an important role in the design and synthesis of molecular magnetic materials[1, 2]. However, nitronyl nitroxide radicals are poor elec- tron-donor ligands and their coordination ability is limited. Recently, it has led to the development of functionalized nitronyl nitroxide radicals in which a strong coligand is incorporated. Due to the strong coordinate ability of nitrogen atom from pryidinyl ring,…     

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 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 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]. …     

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 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.     

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 Crystal Structure of a Macrocycle [Cu(dadm)(mal)(H_2O)]_2·02H_2O

1 INTRODUCTION Recently the self-assembly through transition metal and N-containing organic ligands has appear- ed as a popular research field in supramolecular architecture. Among the N-donor organic ligands, the rigid ligands have been well investigat…     

Synthesis,Structure, and Luminescent and Dielectric Properties of a Novel 1D Chain Zinc(Ⅱ) Complex {[Zn(DCImPyO)·(H_2O)_2·]·H_3O}_n

Under hydrothermal conditions, 4-(4,5-dicarboxy-1H-imidazol-2-yl)pyridine 1-oxide (H3DCImPyO) reacted with ZnCl2 to give the 1D chain complex {[Zn(DCImPyO)·(H2O)2·]·H3O}n (1). Single-crystal X-ray determination shows that complex 1 crystallizes in the monoclinic system, space group P2 1 /c with a=9.488(2), b=13.247(3), c=12.959(4) , β=126.716(19)°, Z=4, V=1305.6(6) 3 , C10H11N3O8Zn, D c=1.865 g/cm3 , M r=366.61, λ(MoKa)=0.71073 , μ=1.930 mm -1 , F(000)=744, R=0.0472 and wR=0.1487. Fluorescent analysis showed an intense emission band at 422 nm when the exciting radiation was set at 378 nm. Dielectric constant of complex 1 was measured at different frequencies with temperature variation.     

Synthesis and Crystal Structure of Cobalt(II) Complex [Co(H_2O)_2(bpe)(OAc)_2]·4,4''''-dpdo

1 INTRODUCTION Recently construction of new coordination poly-mer networks through the rational combination oforganic ligands ‘spacers’and metal ‘nodes’ is an areaof intense interest[1～3] because of their capability ofshowing novel magnetic[4], nonl     

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…     

Crystal Structure and Interaction with DNA of [Ni(phen)(mal)(H_2O)_2]·3H_2O

1 INTRODUCTION In the last few years, much attention has been paid to the molecular structure and biological activity of coordinated complexes in inorganic chemistry field. Ni(Ⅱ) is one of the commonest transition metals with two coordination numbers (4 and 6)[1～3]. Ge- nerally speaking, Ni(Ⅱ) coordination mode depends on the structure of ligand, solvent and reaction con- ditions, among which ligand plays a decisive role and determines not only the molecular structure of the complex bu…     

Synthesis and Crystal Structure of a Novel Co(II)-Nitronyl Complex [Co(IM2-Py)(PCA)(N_3)_2]

1 INTRODUCTION The design and synthesis of molecule-based mag-netic materials is one of the major subjects of mate-rials science. Nitronyl nitroxides acting as useful pa-ramagnetic building blocks have been extensively usedto assemble molecular magnetic materials in the pastfew years[1～5]. However, their weakly basic charac-ter strongly limits their coordination ability. Mean-while, the azide anion is a versatile ligand which canlink the transition metal atoms with different coor-dinatio…     

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 Crystal Structure of a Novel 1D Coordination Polymer:[Pr(BYBA)_3(H_2O)_2]·[Pr(BYBA)_3(H_2O)]

The novel coordination polymer [Pr(BYBA)3(H2O)2]·[Pr(BYBA)3(H2O)] (BYBAH=2-benzoylbenzoic acid) was yielded by hydrothermal synthesis,determined by single-crystal X-ray diffraction,and characterized by FT-IR and UV-Vis spectra. The crystal crystallizes in the triclinic system,space group P1 with a=9.112(3),b=14.644(5),c=27.076(11),α=84.223(3),β= 87.816(4),γ=88.902(4)o,V=3592(2)3,C84H60O21Pr2,Mr=1687.14,Z=2,F(000)=1700,Dc= 1.560 g/cm3,μ=1.419 mm-1,the final R=0.0485 and wR=0.1258 for 13035 observed reflections with I > 2σ(I). The compound contains two different building units,[Pr2(BYBA)6(H2O)4] and [Pr2(BYBA)6(H2O)2]. It is noticeable that [Pr2(BYBA)6(H2O)4] is an isolated binuclear building block,in which the Pr3+ ion centers are both located in an eight-coordinated environment. However,in [Pr2(BYBA)6(H2O)2] the Pr3+ ion centers are located in a nine-coordinated environment and connected by BYBA ligands to form 1D chains.     

Synthesis and Crystal Structure of a Two-dimensional Framework Supramolecular Complex [Mn(phen)(DPZDA)(H_2O)]·2H_2O

1INTRODUCTION Crystal engineering has captured the interest of re-searchers these years[1,2].Especially,supramolecular chemistry based on weak interactions(hydrogen bond,π-πstacking,C–H···O interaction,ion-πinter-action and hydrophobic interaction,et al.)is one of the most hottest studying fields[3～5].So far,in this field,intensive endeavors have been paid to the synthesis of novel functional complexes possessing catalysis,non-linear optical property,magnetism and molecular recog…     

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 Crystal Structure of the Binuclear Complex:[Cu_2(phen)_2(ip)(Hip)_2]·4H_2O

A binuclear complex [Cu2(phen)2(ip)(Hip)2]·4H2O has been synthesized by the reaction of Cu(CH3COO)2·H2O, phen(1,10-phenanthroline) and isophthalic acid (H2ip) under hydrothermal condition. Elemental analysis, IR spectra and X-ray single-crystal diffraction were carried out to determine the composition and crystal structure. Crystal data for this complex: mono- clinic, space group C2/c, a = 19.214(3), b = 10.6973(14), c = 22.567(3) , β = 105.081(2)°, C24H19N2O8Cu, Mr = 526.95, Z = 8, F(000) = 2160, V = 4478.6(10) 3, Dc = 1.563 g/cm3, μ = 1.030 mm-1, –24≤h≤16, –13≤k≤13, –28≤l≤28, R = 0.0369 and wR = 0.0819 for 4615 (Rint = 1.0357) independent reflections and 3290 observed ones (I > 2σ(I)). Structural analysis shows that coordination geometry of Cu(Ⅱ) is a planar square, and the title complex exhibits a 2-D framework supramolecular structure by hydrogen bonds and π-π stacking interactions.     

Synthesis and Crystal Structure of a New Tetracopper Complex [Cu(H_2O)_3Cu(HCDTA)]_2(ClO_4)_2·H_2O

A new tetracopper complex [Cu(H2O)3Cu(HCDTA)]2(ClO4)2·H2O (CDTA = transcyclohexane-1,2-diamine-N,N,N′,N′-tetraacetate) has been prepared and characterized by singlecrystal X-ray diffraction analysis. The crystal adopts space group C2/c with a = 16.990(10), b = 9.150(5), c = 29.318(17) , β = 104.289(9)°, V = 4417(4) 3, Z = 4, C28H52Cl2Cu4N4O31, Mr = 1265.80, Dc = 1.904 g/cm3, μ = 2.130 mm-1, F(000) = 2584, T = 293(2) K, the final R = 0.0328 and wR = 0.0809 for 4938 observed reflections (I 2σ(I)). The tetracopper units are interconnected by weak covalent bonds into a layered structure.