Synthesis and Structure of One Novel Polyoxometalate Compound Connected via Cerium(Ⅲ) Cation with Three-dimensional Framework H2{[K(H2O)2]2[Ce(H2O)5]2(H2Mo1.16W10.84O42)}·8H2O

One novel polyoxometalate compound connected via trivalent cerium cation as bridge H2{[K(H2O)2]2[Ce(H2O)5]2(H2Mo1.16W10.84O42)}·8H2O 1 was designed and synthesized in aqueous solution. X-ray diffraction analysis reveals that the structure of 1 is a three-dimensional framework assembled from the arrangement of H2Mo1.16W10.84O42 (named paradodecmetalate-B) and Ce(H2O)53 containing two planes, which are constructed through the unification of H2Mo1.16W10.84O4210- and Ce(H2O)53 along the [100] and [001] directions. Crystal data H96Ce4K4Mo2.32O128W21.68, Mr = 7074.89, monoclinic, P21/n, a = 12.5037(17), b = 17.002(2), c = 12.7473(17) (A), β = 105.966(2)°, V = 2605.4(6) (A)3, Z = 1, Dc = 4.509 g/cm3, F(000) = 3132, μ = 26.098 mm(1, R = 0.0377 and wR = 0.0789 (I ＞ 2σ(I)).     

Synthesis and Structure of One Novel Polyoxometalate Compound Connected via Cerium(III) Cation with Three-dimensional Framework H_2{[K(H_2O)_2]_2[Ce(H_2O)_5]_2(H_2Mo_(1.16)W_(10.84)O_(42))}·8H_2O

One novel polyoxometalate compound connected via trivalent cerium cation as bridge H2{[K(H2O)2]2[Ce(H2O)5]2(H2Mo1.16W10.84O42)}·8H2O 1 was designed and synthesized in aqueous solution. X-ray diffraction analysis reveals that the structure of 1 is a three-dimensional framework assembled from the arrangement of H2Mo1.16W10.84O42 (named paradodecmetalate-B) and Ce(H2O)53+ containing two planes, which are constructed through the unification of H2Mo1.16W10.84O4210- and Ce(H2O)53+ along the [100] and [001] directions. Crystal data: H96Ce4K4Mo2.32O128W21.68, Mr = 7074.89, monoclinic, P21/n, a = 12.5037(17), b = 17.002(2), c = 12.7473(17) A, β = 105.966(2)°, V = 2605.4(6) 3, Z = 1, Dc = 4.509 g/cm3, F(000) = 3132, μ = 26.098 mm-1, R = 0.0377 and wR = 0.0789 (I > 2σ(I)).     

Synthesis, Structure, and Magnetic Properties of One Polyoxometalate (W/Mo) Compound: H8K{[Ni(H2O)5]2(H2Mo1.80W10.20O42)}Cl3·16H2O

One new polyoxometalate compound connected via nickel/potassium cations, H8K{[Ni(H2O)5]2(H2Mo1.80W10.20O42)}Cl3·16H2O 1, was prepared and characterized by elemental analysis and IR spectroscopy. Single-crystal X-ray diffraction analysis results reveal that clusters of [Ni(H2O)5]2(H2Mo1.80W10.20O42)}6-in compound 1 are linked by potassium cations to form one- dimiensional chains, based on which a three-dimensional network is further constructed via the hydrogen bonds of O…O and O…Cl. Magnetic measurements show that compound 1 has para- magnetic properties. Crystal data: H62Cl3KMo1.80Ni2O68W10.20, Mr = 3461.33, monoclinic, space group C2/c, a = 18.9291(19), b = 16.6758(17), c = 19.1064(19)(A), β = 106.6880(10)(, V = 5777.1(10) (A)3, Z = 4, Dc = 3.980 g/cm3, F(000) = 6250, μ = 21.574 mm(1, R = 0.0579 and wR = 0.1623 (Ⅰ ＞ 2σ(I)).     

Synthesis and Structural Characterization of One New Polyoxotungstate Connected via Potassium Cations with a Three-dimensional Framework: H6Na2K4(H2W12O42)Cl2·14H2O

One new polyoxotungstate complex H6Na2K4(H2W12O42)Cl2·14H2O 1 has been prepared in the beaker solution and characterized by elemental analysis and IR spectroscopy. Crystal data: H36Cl2K4W12Na2O56, Mr = 3411.77, monoclinic, space group P21/c, a = 11.5734(16), b = 14.3136(19), c = 15.459(2)(A), β = 105.601(2)°, V = 2466.5(6)(A)3, Z = 2, Dc = 4.594 g/cm3, F(000) = 3008, μ = 28.447 mm-1, R = 0.0574 and wR = 0.1239 (Ⅰ＞ 2σ(Ⅰ)). Single-crystal X-ray diffraction analysis results reveal that a three-dimensional architecture in the title compound is constructed from the H2W12O4210- units linked by potassium.     

Synthesis and Structure of a Novel Compound [Cu2(EDTA)(Py)2(H2O)2]·2H2O

A novel compound [Cu2(EDTA)(Py)2(H2O)2]·2H2O was synthesized by the reaction of CuSO4(5H2O with H4EDTA in pyridine/water (V/V = 1/4) solvent, and characterized by elemental analysis, IR spectrum and X-ray single-crystal diffraction. It crystallizes in the monoclinic system, space group P21/n with a = 1.26974(6), b = 0.67949(3), c = 1.48548(3) nm, β = 91.454(2)o, V = 1.28122(9) nm3, Z = 2, Dc = 1.673 g/cm3, Mr = 645.56, F(000) = 664, μ(MoKα) = 1.729 mm-1, the final R = 0.0353 and wR = 0.0832 for 1920 observed reflections (I > 2((I)). The compound is a centrosymmetric binuclear molecule with bridged EDTA group. Each Cu(II) atom is linked to two oxygen atoms and one nitrogen atom of EDTA, one oxygen atom of water and one nitrogen atom of pyridine to form a distorted square pyramidal environment. There exist face-to-face π-π stacking interactions between pyridine rings from neighboring molecule with the interplanar distance of 0.3670 nm and hydrogen bonding between EDTA and water molecules.     

Synthesis and Structure of a New Mixed-polyoxometalate （W/Mo） Compound： H5K{[Co（H2O）5]2（H2Mo3.24W8.76O42）}·19H2O

One new polyoxometalate compound connected via cobalt/potassium cations,namely H5K{[Co（H2O）5]2（H2Mo3.24W8.76O42）}·19H2O 1,was prepared and characterized by ele- mental analysis and IR spectroscopy. Single-crystal X-ray diffraction analysis result reveals that anions of {[Co（H2O）5]2（H2Mo3.24W8.76O42）}6- in compound 1 are linked by potassium cations to form one- dimensional chain,based on which a three-dimensional network is further constructed with the help of hydrogen bonds. Crystal data： H67Co2KMo3.24O72W8.76,Mr = 3297.87,monoclinic,C2/c,a = 19.0126（10）,b = 16.6025（5）,c = 19.1908（10）A,β = 106.713（1）°,V = 5801.8（5） A^3,Z = 4,Dc = 3.755 g/cm^3,F（000） = 5961,μ = 18.730 mm^-1,R = 0.0569 and wR = 0.1437 （I 〉 2σ（I））.     

Synthesis and Crystal Structure of the Heteropolymate Compound Na3H2[Ce3(H2O)18Bi2W22O76]·23H2O

A Bi(Ⅲ) contained heteropolymate compound Na3H2[Ce3(H2O)18Bi2W22O76] (23H2O 1 has been synthesized. It crystallizes in the triclinic system, space group P with a = 14.370(3), b = 17.113(3), c = 24.764(5) A, α = 74.33(3), β = 77.20(3), γ = 65.29(3)o, V = 5285.3(18) A3, Z = 2, Mr = 6908.66, Dc = 4.341 g/cm3, F(000) = 6042, μ(MoKσ) = 28.543 mm-1, R = 0.0604 and wR = 0.1659 for 15788 reflections with I > 2σ(I). The structure analysis revealed that in the anionic framework of the title compound the [Bi2W22O76]14- anions are connected by Ce3+ and Na+ cations into a three dimensional network.     

Synthesis, Crystal Structure and Magnetic Properties of Novel Three-dimensional Frameworks [Mn(PDC)H2O]n

A novel coordination polymer, [Mn(PDC)H2O]n (1) (H2PDC＝pyridine-2,3-dicarboxylic acid), has been hydrothermally synthesized and characterized by elemental analysis, IR and single crystal X-ray diffraction. X-ray single crystal structural analyses revealed that two-dimensional frameworks were formed, and further assembled into a three-dimensional supramolecular structure bridged by PDC ligands. Moreover, the magnetic study of complex 1 shows weak antiferromagnetic interaction between the neighboring Mn(II) centers within the chains and even weak ferromagnetic interactions between the Mn(II) centers in different chains.     

Synthesis and Crystal Structure of a Novel 2-Fold Interpenetrating Three-dimensional Coordination Polymer, {[Co3(byip)2(bix)3(H20)2]·H2O}n

T The title coordination polymer including two crystallographically independent Co<'2+> ions is hydrothermally synthesized, in which the Co(1)<'2+> ion is four-coordinated by two carboxylate oxygen atoms from two different 5-(benzoic acid-4-yldiazenyl)isophthalate(byip<'3->)anions and two nitrogen atoms from two distinct 1,4-bis(imidazol-1-ylmethyl)benzene(bix)ligands displaying a tetrahedral geometry. The Co(2)<'2+> ion is six-coordinated by two water molecules at the apical positions, and two carboxylate oxygen atoms and two nitrogen atoms at the equatorial positions, affording a slightly distorted octahedron. Two Co(1)<'2+> and two Co(2)<'2+> ions are linked together by four byip<'3-> anions forming a 44-membered motif and these motifs are further arranged into a three-dimensional framework through bix ligands along the a axis with a larger channel(ca.22.70(A)×11.01(A)). Each individual network interpenetrates with the other identical network in a parallel fashion to generate a 2-fold interpenetrating array with the {6<'2>.8<'4>} {6<'3>}<,2> {6<'4>.8<'2>}<,2> topology.     

Synthesis, Structure, and Magnetic Properties of One Polyoxometalate (W/Mo) Compound: H_8K{[Ni(H_2O)_5]_2(H_2Mo_(1.80)W_(10.20)O_(42))}Cl_3·16H_2O

One new polyoxometalate compound connected via nickel/potassium cations, H8K{[Ni(H2O)5]2(H2Mo1.80W10.20O42)}Cl3·16H2O 1, was prepared and characterized by elemental analysis and IR spectroscopy. Single-crystal X-ray diffraction analysis results reveal that clusters of [Ni(H2O)5]2(H2Mo1.80W10.20O42)}6-in compound 1 are linked by potassium cations to form one- dimiensional chains, based on which a three-dimensional network is further constructed via the hydrogen bonds of O…O and O…Cl. Magnetic measurements show that compound 1 has para- magnetic properties. Crystal data: H62Cl3KMo1.80Ni2O68W10.20, Mr = 3461.33, monoclinic, space group C2/c, a = 18.9291(19), b = 16.6758(17), c = 19.1064(19), β = 106.6880(10)°, V = 5777.1(10)3, Z = 4, Dc = 3.980 g/cm3, F(000) = 6250, μ = 21.574 mm?1, R = 0.0579 and wR = 0.1623 (I > 2σ(I)).     

Synthesis and Crystal Structure of a Novel Three-dimensional Supramolecular Compound [（AgI3）（4-HBPFA）2（H2O）]

1 INTRODUCTION In recent years, the rational design and synthesisof metal-directed supramolecular frameworks throughintermolecular hydrogen bonds, π-π stacking interac-tion or other weak interactions have received muchattention because of their interesting molecular topo-logies and various potential applications in catalysis,superconductor, magnetism, nonlinear optics, sen-sors and molecular recognition[1～4]. On the otherhand, the attachment of mono- or polypyridyl frag-ments to a ferr…     

Synthesis and Crystal Structure of a Novel Three-dimensional Cu(II) Compound{[Cu(2,2''''-bipy)(C_7H_4O_5S)(H_2O)_2]·H_2O}_n

1 INTRODUCTION Recently, the design and synthesis of novel inorg-anicorganic supramolecular complexes have been at-tached more and more attention due to their poten-tial applications in many areas[1～3]. Copper complex-es have attracted much attention owing to their intri-guing properties, such as molecular magnetization,absorption, heterogeneous catalysis, etc[4, . A series5]of copper-carboxylate complexes have been reportedand all kinds of coordination models of the car-boxylic group a…     

A Novel Mo—Doped Compound with Graphite—Like Structure：[H3O]2V3O8

1 INTRUDUCTION During the last few years, there has been much effort paid to the synthesis of new transition-metal oxides that might be active hosts for intercalation reactions. Vanadium and molybdenum in higher oxidation states with higher reacting ability tend to form polynuclear, anionic metal-oxygen clusters with an extraordinary variety of the relevant topology and electronic structures[1~3]. The preparation of the corresponding clusters is of special interest for different aspects …     

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]. …     

[Ce(H2 O)7 Al(OH)6 Mo6O18]·4H2 O: A New One-dimensional Zigzag Chainlike Structure of Anderson Cluster Linked by Cerium Ions

A new cerium polyoxomolybdate {[Ce(H2O)7Al(OH)6Mo6O18]·4H2O} (compound 1) was synthesized and characterized by X-ray diffraction analysis, elemental analysis, TG analysis and IR spectrometry. Compound 1 exhibits a zigzag chain-like structure, which is constructed from an Anderson type anion and rare earth metal, Ce (Ⅲ).These 1-D chains are further extended into a 3-D network by the aid of multipoint hydrogen-bonding interactions.     

Hydrothermal Synthesis and Structure Characterization of Diamine-templated Two-dimenisional Cerium Sulfate, [C6N2H14][Ce(SO4)2(H2O)2]·0.5SO4·2.5H2O

Open-framework materials are of great interest from both the theoretical and practical points of view due to their catalytic, absorbent, and ion-exchange properties[1].     

Synthesis,Crystal Structure and Spectral Properties of [Ce(NO3)5(H2O)2]·2(Hphen)·(H2O)

A novel complex [Ce(NO3)5(H2O)2]·2(Hphen)·(H2O) (phen =1,10-phenanthroline) with formula C24H24CeN9O18 and Mr = 866.64 has been synthesized and structurally characterized by X-ray diffraction. It crystallizes in triclinic, space group Pī with a = 7.5534(2), b = 8.083(2), c = 25.8377(6) A, α = 86.847(1), β = 89.937(1), γ = 86.981(1)o, V = 1572.94(6) A3, Dc = 1.830 g/cm3, F(000) = 866, β = 1.545 cm-1 and Z = 2. The final refinement gave R = 0.0486 and wR = 0.1278 for 4852 observed reflections with I > 2σ(I). It consists of discrete [Ce(NO3)5(H2O)2]2- anion, two Hphen+ cations and a lattice water molecule. In the compound, all of the five nitrates are bidentate, and the coordination of Ce(III) is 12. The photo-luminescence of this compound was also investigated.     

Synthesis, Characterization and Crystal Structure of a Three-dimensional Coordination Polymer {[Cd(1,5-nds)(Him)2(H2O)]·2H2O}n

A novel cadmium(Ⅱ) coordination polymer {[Cd(1,5-nds)(Him)2(H2O)]·2H2O}n (1,5-nds = naphthalene-1,5-disulfonate and Him = imidazole) was synthesized based on the reaction of cadmium oxide and 1,5-naphthalenedisulfonic acid firstly, and then mixed with imidazole in methanol medium. Its structure was characterized by elemental analysis, IR and TGA, respectively. The crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to the triclinic system, space group P, with a = 8.5420(10), b = 10.2570(10), c = 13.361(2)(A), α = 100.704 (2), β = 100.195(2), γ = 108.873(3)°, C16H20Cd N4O9S2, Mr = 588.91, V = 1.0524(2) nm3, Dc = 1.858 g/cm3, Z = 2, F(000) = 592, μ= 1.294 mm-1, R = 0.0397 and wR = 0.1007 for 3180 observed reflections (I > 2σ(I)). Structural analysis shows that the cadmiun atom is coordinated with four oxygen atoms from three 1,5-nds and one water molecule together with two nitrogen atoms from two imidazoles, giving a distorted octahedral coordination geometry. The molecules are linked to form a two-dimensional coordination polymer based on bridging ligands of naphthalene-1,5-disulfonate anions, the sheets of which are then interacted via hydrogen bonds, leading to a three-dimensional network structure.     

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.     

1D Chain-Like Architecture in Anderson Heteropolymolybdate {[Eu(H2O)6]2(TeMo6O24)}·6H2O: Synthesis and Characterization

A new Anderson-based heteropolymolybdate {[Eu(H₂O)₆]₂(TeMo₆O₂₄)}·6H₂O (1) has been hydrothermally synthesized and characterized by elemental analyses, IR, thermal stability analysis, XRD and single crystal X-ray diffraction. Compound 1 crystallizes in the triclinic system, space group P-1, a = 9.4023(6) Å, b = 10.2530(7) Å, c = 10.6525(10) Å, α = 101.583(7)º, β = 108.024(7)º, γ = 107.150(6)º, V = 883.60(12) ų, Z = 1, R₁ = 0.0338, wR₂ = 0.0849. Compound 1 exhibits 1D chain-like structure formed by the alternative connection between Anderson type polyoxoanions [TeMo₆O₂₄]^6? and Eu³⁺ along a-axis. Compound 1 displays good fluorescent emission of the Eu³⁺ ion at room temperature.