Hydrothermal Synthesis and Crystal Structure of a New 2D Layer Compound [{Ni(en)_2}_2Sb_8V_(14)O_(42)]·5.5H_2O

A new compound based on polyoxovanadate [{Ni(en)2}2Sb8V14O42]·5.5H2O(en=ethylenediamine)(1) was synthesised hydrothermally as black rhombus crystals.Compound 1 crystallized in the monoclinic system with space group P21/n,Z=4,a=1.46953(9) nm,b=1.28623(8) nm,c=1.76008(11) nm,β=105.7230(10)°.In the asymmetric unit,cluster {Sb8V14O42} can be considered as an Sb derivative of the {V18O42} unit.Each {Sb8V14O42} cluster as a building block interconnected to four other neighboring units by {Ni(en)2} bridging groups...     

Synthesis and Crystal Structure of [{Cd(hmbdc)(H2O)3}·2H2O]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) (A), β= 108.198(4)°, V=1288.6(6) (A)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 K_3[HO{VO(O_2)_2}_2]·H_2O

1 INTRODUCTION Though the investigation on chemistry of tran- sition metal-peroxy complexes has been extensively carried out, up to now, only four structures of purely inorganic dimeric peroxovanadates have been deter- mined by single-crystal X-ray meth…     

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.     

Hydrothermal Synthesis and Crystal Structure of a Novel Polyoxometalate K(C_4N_2H_(12))_4(C_4N_2H_(11))_(2-)[Mo_8~ⅤMo_4~ⅥCdP_8O_(54)(OH)_8]F·6H_2O

The title compound 1 has been synthesized by the reaction of H_2MoO_4, CdCl_2, H_3PO_4, KF, piperazine hexahydrate and water in aqueous solution under mild hydrothermal conditions. Single-crystal X-ray analysis reveals that the title compound crystallizes in the triclinic system, space group P(-1) with a = 14.049(3), b = 15.972(3), c = 20.043(4) (A), α = 85.82(3), β = 81.28(3),γ = 67.15(3)°, V= 4095.9(14) (A)~3, M_r = 3204.62, Z=2,D_c = 2.598 g/cm~3,μ = 2.360 mm~(-1), F(000) = 3124, the final R = 0.0314, wR = 0.0826 and S = 0.989 for 18592 observed reflections with I > 2σ(I). The crystal packing is stabilized by N-H…O and O-H…O intra- and intermolecular hydrogen bonds to form an infinite 3D network.     

Synthesis and Characterization of Surfactant-encapsulated Polyoxoanions: [(C_nH_(2n+1))_2N(CH_3)_2]_(12)[Mo_(36)(NO)_4O_(108)(H)2O)_(16)] (n=12, 18)

ＩｎｔｒｏｄｕｃｔｉｏｎＳｕｐｒａｍｏｌｅｃｕｌａｒｓｅｌｆ ｏｒｇａｎｉｚａｔｉｏｎａｓａｃｏｎｔｒｏｌｌａｂｌｅｔｅｃｈｎｉｑｕｅｆｏｒｔｈｅａｒｔｉｆｉｃｉａｌｓｕｐｒａｍｏｌｅｃｕｌａｒａｒｃｈｉｔｅｃｔｕｒｅａｔｍｏｌｅｃｕｌａｒａｎｄ/ｏｒｎａｎｏｓｉｚｅｄｌｅｖｅｌｉｓｓｈｏｗｉｎｇｆａｓｃｉｎａｔｉｎｇｐｅｒｓｐｅｃｔｉｖｅｓｉｎｔｈｅｆｉｅｌｄｏｆｔｈｅｍｏｌｅｃｕｌａｒｍａｔｅｒｉａｌｓｄｅ ｓｉｇｎ ,ｄｕｅｔｏｔｈａｔｏｒｇａｎｉｃａｎｄｉｎｏｒｇａｎｉｃｃｏｍｐｏｎｅｎｔｓ…     

Hydrothermal Synthesis and Crystal Structure of Iron Molybdophosphate Fe[Mo_6O_(12)(OH)_3(H_2PO_4)(HPO_4)_2(PO_4)]_2- [Fe(2,2′-bipy)(H_2O)_2]_2[Fe(2,2′-bipy)_3]_2·6H_2O

1 INTRODUCTION Organic-inorganic hybrid materials and polyoxo-metalates have received much attention because of their intriguing structural diversity and potential applications in molecular adsorption, ion exchange, heterogeneous catalysis and nanotech nology as well as in electrical, magnetic and photochemical areas[1, 2]. One of the important ad- vances in the design of new organic-inorganic hybrid materials is utilizing poly- oxometalates’ coordination ability to produce poly- oxoanio…     

Hydrothermal Synthesis and Structure of a Novel Two-dimensional Complex:[Ni_(0.5)(H_2O)_(1.5){Ni(en)_2}_3V_(18)O_(42)(Cl)]3.5H_2O

1 INTRODUCTION The crystal engineering of inorganic-organic hybrid materials has generated significant interest in their new structural architectures and potential ap- plications in the fields of photochemistry, catalysis, electromagnetism and sorption[1…     

THE CRYSTAL AND MOLECULAR STRUCTURE OF (QH)_3[Mo_2O_4(■-COO)(NCS)_4]·H_20 AND (QH)_3[Mo_2O_4(CH_30H)(NCS)_5]

<正> INTRODUCTION. In the reported crystal structures of di(μ-X)(X=O,S)-bridged oxodimolybdates (Ⅴ), the local, symmetric array of donor atoms linked to the Mo atoms is well known. The title compounds (QH)_3[Mo_2O_4(COO)-(NCS)_4]-H_2O(Ⅰ) and (QH)_3[Mo_2O_4(CH_3OH)(NCS)_5](Ⅱ), in which the environments     

Synthesis and Crystal Structure of [(NH_4)_6][Gd_2Mo_(36)O_(112)(H_2O)_(20)]·52H_2O

1 INTRODUCTION There is considerable interest in the heteropolymetalates in view of their potential applications in many fields, such as, catalysis, biology, medicine, magnetochemistry, and materials science[1～5]. It has been well- known that the rare earth elements are highly oxophilic and the anion of polyoxomolybdates have oxygen-rich composition, which can be used as synthons for the construction of novel heteropolymetalates. Since the structure of polyoxoanion 36-molybdate Mo36O1128…     

A Pseudo-Keggin Compound: Hydrothermal Synthesis and Crystal Structure of (DETAH)(DETAH_3)_3[V_(18)O_(42)(PO_4)]·(PO_4)·2H_2O

The novel vanadophosphate (DETAH)(DETAH3)3[V18O42(PO4)]·(PO4)·2H2O has been synthesized under hydrothermal conditions and its structure was determined by single-crystal X-ray diffraction. The compound crystallizes in monoclinic, space group C2/c with a = 23.857(3), b = 12.9619(18), c = 20.204(3) , β = 105.692(2)°, V = 6015.0(14) 3, Z = 4, Dc = 2.473 g/cm3, Mr = 2239.68, F(000) = 4432, R = 0.0725, wR = 0.1524 and GOOF = 1.095. The metaloxo cluster contains a novel six-capped pesudo-Keggin structure unit which encloses a disorder PO43- guest.     

Hydrothermal Synthesis and Crystal Structure of a Cadmium(Ⅱ) Polymer with One-dimensional Chain Structure: [Cd(MDPPz)(BDC)(H2O)]n

A metal-organic coordination compound formulated as [Cd(MDPPz)(BDC)(H2O)]n 1 (MDPPz = 11-methyldipyrido[3,2-a:2',3'-c]phenazine, BDC = 1,4-benzenedicarboxylate) has been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, fluorescence spectrum and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system, space group C2/c, with a = 30.673(8), b = 9.623(3), c = 20.784(6) (A), β = 98.646(3)o, V = 6065(3) (A)3, C27H17CdN4O5, Mr = 589.85, Dc = 1.292 g/cm3, μ(MoKα) = 0.757 mm(1, F(000) = 2360, Z = 8, the final R = 0.0381 and wR = 0.0855 for 4191 observed reflections (I＞2σ(I)). 1 exhibits blue fluorescence property at room temperature.     

Synthesis and Structure of(NH4)_2 [V2O_4(OCH_2COO)_2]

ＳｙｎｔｈｅｓｉｓａｎｄＳｔｒｕｃｔｕｒｅｏｆ（ＮＨ４）２［Ｖ２Ｏ４（ＯＣＨ２ＣＯＯ）２］ＺＨＯＵＺｈａｏ－ｈｕｉ，ＷＡＮＧＪｉｎｚｈｉ，ＷＡＮＨｕｉ－ｌｉｎａｎｄＴＳＡｌＫｈｉ－ｒｕｉ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＸｉａｍｅｎＵｎｉ...     

Hydrothermal Synthesis and Crystal Structure of a New Supramolecular Channel Framework Based on Cu Complexes and Polyoxovanadate:[Cu(I)(phen)_2]_5[HV_(15)O_(36)(Cl)]_(0.65)[H_3V_(16)O_(38)(Cl)]_(0.35)·2H_2O

1 INTRODUCTION In the past years, polyoxovanadates have attracted extensive interest in solid-state material chemistry owing to the formation of mixed-valence com- pounds that exhibit rich electronic and magnetic properties relevant to catalysis, medicine and ma- terials science[1～4]. The following polyoxovanadates have been found and structurally characterized: [V5O14]3-, [V6O19]8-, [V10O28]6-, [V12O32]4-, [V13- O34]3-, [V15O36]5-, [V15O42]9-, [V17O42]4-, [V18- O42]12-, [V16O38]7…     

Hydrothermal Synthesis and Crystal Structure of a Cadmium(Ⅱ) Polymer with One-dimensional Chain Structure: [Cd(bpy)(BDC)]n·nbpy

A metal-organic coordination polymer [Cd(bpy)(BDC)]n·nbpy (bpy = 2,2'-bipyri- dine, H2BDC = terephthalic acid) has been hydrothermally synthesized and structurally characteri- zed by elemental analysis, IR spectrum, TG and single-crystal X-ray diffraction. The complex crystallizes in monoclinic, space group C2/c with a = 15.723(5), b = 21.695(5), c = 7.576(5)(A), β = 116.171(7)o, V = 2319.3(18)(A)3, C28H20CdN4O4, Mr = 588.88, Dc = 1.686 g/cm3, μ(MoKα) = 0.987 mm(1, F(000) = 1184, Z = 4, the final R = 0.0464 and wR = 0.0831 for 1882 observed reflections (Ⅰ ＞ 2σI)). It exhibits a three-dimensional network with channels constructed from one-dimensional coordination chains via C-H…O hydrogen bonds and significant aromatic π-π stacking interactions.     

Hydrothermal Synthesis and Crystal Structure of a Cadmium(Ⅱ) Polymer with One-dimensional Chain Structure: [Cd(bpy)(BDC)]n·nbpy

A metal-organic coordination polymer [Cd(bpy)(BDC)]n·nbpy (bpy = 2,2'-bipyri- dine, H2BDC = terephthalic acid) has been hydrothermally synthesized and structurally characteri- zed by elemental analysis, IR spectrum, TG and single-crystal X-ray diffraction. The complex crystallizes in monoclinic, space group C2/c with a = 15.723(5), b = 21.695(5), c = 7.576(5)(A), β = 116.171(7)o, V = 2319.3(18)(A)3, C28H20CdN4O4, Mr = 588.88, Dc = 1.686 g/cm3, μ(MoKα) = 0.987 mm(1, F(000) = 1184, Z = 4, the final R = 0.0464 and wR = 0.0831 for 1882 observed reflections (Ⅰ ＞ 2σI)). It exhibits a three-dimensional network with channels constructed from one-dimensional coordination chains via C-H…O hydrogen bonds and significant aromatic π-π stacking interactions.     

Hydrothermal Synthesis and Characterization of a Novel Two-dimensional Framework Materials Constructed from Polyoxometalate and Coordination Groups: [H_2Mo_(5.5)V_(10.5)O_(40)(PO_4)][Cu(en)_2]_4·7H_2O

IntroductionPolyoxometalatesarewidelystudiedfortheirin terestingapplicationsincatalysis ,electronicconduc tivity ,magnetism ,nonlinearopticsandmedicine[1— 4 ] .Whilethemechanismofthesynthesisofpolyoxometalatesremainselusiveandisoftende scribedasself assembly ,thereseemstobeanincreas inguseofthecombinationofthehydrothermalmethodandthestructure directingtemplate .There searchwiththismethodhasdemonstratedthatanum beroftransitionmetaloxides ,typicallyreducedmolybdenumoxides ,mixedvalancevanadiumo…     

Hydrothermal Synthesis and Structure of a Novel Coordination Polymer Co_3(tma)(pda)_2(H_2O)_3]n·nH_2O

1INTRODUCTION Recently,the design and preparation of coordina-tion polymers with new porous frameworks are of great interest due to their potential functionalities such as catalysis,gas absorption,separation and molecu-lar recognition.In designing1-D,2-D and3-D porous coordination polymers,the selection of appropriate ligands is crucial for determining the structure.The mixed-linker systems of both carboxylates and pyri-dyls have proved to be effective for the preparation of novel coordi…     

Hydrothermal Synthesis and Crystal Structure of a One-dimensional Coordination Polymer Constructed from Bicapped Pseudo-Keggin Cluster:(Et_3N)_(0.5)(en)_2[SiMo_(12)O_(40)(VO)_2]·4H_2O

A new pseudo Keggin-type bicapped compound(Et3N)0.5(en)2[SiMo12O40(VO)2]·4H2O(Et3N=triethylamine,en=ethylenediamine) has been hydrothermally synthesized and characterized by IR,elemental analysis,TG and X-ray crystallography.The title compound crystallizes in monoclinic,space group P21/n with a=17.576(2),b=13.535(1),c=21.587(2),β=103.790(10)°,V=4987.3(8)3,Z=4,Dc=2.925 Mg/m3,Mr=2196.12,F(000)=4148,μ=3.400 mm-1,R=0.0379 and wR=0.1219.The most remarkable structural feature of the compound is that the clusters represent bicapped pseudo-Keggin structure and are linked one by one through V-O-V bonds forming an infinite 1D chain.Furthermore,such chains are interconnected in a cross-like arrangement through multiform hydrogen bonds to yield a 3D supramolecular network.     

含有不同配位阳离子的四帽Keggin结构砷钼钒酸盐[Co(en)_3][Co(en)_2(H_2O)_2]_2·[Mo_4~ⅤMo_4~ⅥV_8~ⅣO_(40)(AsO_4)]的合成与结构

多金属氧酸盐在催化、医药和材料等方面的应用越来越成为无机化学研究的热点 [1～ 5] .水热合成技术在合成多核金属氧酸盐中有独特的优点 .在众多的钼钒酸盐中 ,只有几种双帽及四帽 Keggin结构被合成出来 [6～ 13 ] .本文报道一种含有不同配位阳离子的四帽 Keggin结构砷钼钒酸盐 [Co(en) 3 ]·[Co(en) 2 (H2 O) 2 ]2 · [Mo 4 Mo 4 V 8O4 0 (As O4 ) ]的合成与结构 .该化合物的结构是由不同的阳离子1个 [Co(en) 3 ]3 + 和 2个 [Co(en) 2 (H2 O) 2 ]2 + 及簇阴离子 [Mo 4 Mo 4 V 8O4 0 (As O4 ) ]5- 构成的 .[Mo8V8O4 0 (As O4 ) …