共查询到20条相似文献,搜索用时 46 毫秒
1.
William T. A. Harrison Mark L. F. Phillips 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(1):2-3
Nasicon-type trisodium discandium tris(arsenate), Na3Sc2(AsO4)3, contains a polyhedral network of vertex-sharing octahedral ScO6 and tetrahedral AsO4 units [dav(Sc—O) = 2.089 (2) Å and dav(As—O) = 1.672 (2) Å] encapsulating two types of Na+ species. The sodium site occupancies are similar to those of the equivalent species in β-Na3Sc2(PO4)3. 相似文献
2.
William T. A. Harrison Alexandre N. Sobolev Mark L. F. Phillips 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(5):508-509
The title compound, (NH4)ZnPO4–HEX, is built up from a three‐dimensional network of ZnO4 and PO4 tetrahedra [dav(Zn—O) = 1.9400 (7) Å and dav(P—O) = 1.5396 (7) Å], fused together via Zn—O—P links [θav = 133.47 (4)°]. An undisordered linear Zn—O—P bond occurs (all three atoms lie on a threefold axis). Extra‐framework NH4+ cations, which interact with the [ZnPO4]? framework by hydrogen bonds, complete the crystal structure. 相似文献
3.
William T. A. Harrison 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):e422-e422
Caesium vanadium(V) selenite contains infinite sheets of distorted vertex‐sharing VO6 octahedra, capped by selenite groups [dav(V—O) = 1.927 (4) Å and dav(Se—O) = 1.709 (3) Å]. Interlayer caesium cations complete the structure [dav(Cs—O) = 3.365 (4) Å]. 相似文献
4.
Hydrothermally prepared La2(SeO3)3 contains a three‐dimensional network of LaO10 polyhedra [dav(La—O) = 2.622 (3) Å] and SeO3 pyramids [dav(Se—O) = 1.691 (3) Å]. One of the SeO3 pyramids is in a general position and the other has crystallographic m symmetry. There are pseudo‐channels in the [010] direction which are probably associated with the SeIV lone pairs. 相似文献
5.
Hydrothermally prepared ethylenediammonium beryllophosphate, (C2H10N2)0.5[BePO4], is an analogue of aluminosilicate zeolite gismondine. A three‐dimensional network of vertex‐sharing BeO4 and PO4 tetrahedra [dav(Be—O) = 1.618 (3) Å, dav(P—O) = 1.5246 (14) Å and θav(Be—O—P) = 139.8°] encapsulates the disordered ethylenediammonium cations in an eight‐ring channel system. 相似文献
6.
Andrey Filaretov Kurt J. Schenk Dmitriy Rusakov Gervais Chapuis 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(7):i54-i56
Hydrothermally synthesized dipotassium gallium {hydrogen bis[hydrogenphosphate(V)]} difluoride, K2Ga[H(HPO4)2]F2, is isotypic with K2Fe[H(HPO4)2]F2. The main features of the structure are ([Ga{H(HPO4)2}F2]2−)n columns consisting of centrosymmetric Ga(F2O4) octahedra [average Ga—O = 1.966 (3) Å and Ga—F = 1.9076 (6) Å] stacked above two HPO4 tetrahedra [average P—O = 1.54 (2) Å] sharing two O‐atom vertices. The charge‐balancing seven‐coordinate K+ cations [average K—O,F = 2.76 (2) Å] lie in the intercolumn space, stabilizing a three‐dimensional structure. Strong [O...O = 2.4184 (11) Å] and medium [O...F = 2.6151 (10) Å] hydrogen bonds further reinforce the connections between adjacent columns. 相似文献
7.
William T. A. Harrison 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):e421-e421
Hydrothermally prepared mansfieldite, AlAsO4·2H2O (aluminium arsenate dihydrate), contains a vertex‐sharing three‐dimensional network of cis‐AlO4(H2O)2 octahedra and AsO4 tetrahedra [dav(Al—O) = 1.907 (2) Å, dav(As—O) = 1.685 (2) Å and θav(Al—O—As) = 134.5 (1)°]. 相似文献
8.
Conformation and Cross Linking of (CuCN)6‐Rings in Polymeric Cyanocuprates(I) equation/tex2gif-stack-8.gif [Cu2(CN)3—] (n = 2, 3) The alkaline‐tricyano‐dicuprates(I) Rbequation/tex2gif-stack-9.gif[Cu2(CN)3] · H2O ( 1 ) and Csequation/tex2gif-stack-10.gif[Cu2(CN)3] · H2O ( 2 ) were synthesized by hydrothermal reaction of CuCN and RbCN or CsCN. The dialkylammonium‐tricyano‐dicuprates(I) [NH2(Me)2]equation/tex2gif-stack-11.gif[Cu2(CN)3] ( 3 ), [NH2(iPr)2]equation/tex2gif-stack-12.gif[Cu2(CN)3] ( 4 ), [NH2(Pr)2]equation/tex2gif-stack-13.gif[Cu2(CN)3] ( 5 ) and [NH2(secBu)2]equation/tex2gif-stack-14.gif[Cu2(CN)3] ( 6 ) were obtained by the reaction of dimethylamine, diisopropylamine, dipropylamine or di‐sec‐butylamine with CuCN and NaCN in the presence of formic acid. The crystal structures of these compounds are built up by (CuCN)6‐rings with varying conformations, which are connected to layers ( 1 ) or three‐dimensional zeolite type cyanocuprate(I) frameworks, depending on the size and shape of the cations ( 2 to 6 ). Crystal structure data: 1 , monoclinic, P21/c, a = 12.021(3)Å, b = 8.396(2)Å, c = 7.483(2)Å, β = 95.853(5)°, V = 751.4(3)Å3, Z = 4, dc = 2.728 gcm—1, R1 = 0.036; 2 , orthorhombic, Pbca, a = 8.760(2)Å, b = 6.781(2)Å, c = 27.113(5)Å, V = 1610.5(5)Å3, Z = 8, dc = 2.937 gcm—1, R1 = 0.028; 3 , orthorhombic, Pna21, a = 13.504(3)Å, b = 7.445(2)Å, c = 8.206(2)Å, V = 825.0(3)Å3, Z = 4, dc = 2.023 gcm—1, R1 = 0.022; 4 , orthorhombic, Pbca, a = 12.848(6)Å, b = 13.370(7)Å, c = 13.967(7)Å, V = 2399(2)Å3, Z = 8, dc = 1.702 gcm—1, R1 = 0.022; 5 , monoclinic, P21/n, a = 8.079(3)Å, b = 14.550(5)Å, c = 11.012(4)Å, β = 99.282(8)°, V = 1277.6(8)Å3, Z = 4, dc = 1.598 gcm—1, R1 = 0.039; 6 , monoclinic, P21/c, a = 16.215(4)Å, b = 13.977(4)Å, c = 14.176(4)Å, β = 114.555(5)°, V = 2922(2)Å3, Z = 8, dc = 1.525 gcm—1, R1 = 0.070. 相似文献
9.
Feng Geng Guo‐Hua Han Bi‐Zhou Lin 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(8):m355-m357
The crystal structure of the title compound, (C4H15N3)2[Mo5O15(HPO4)2]·4H2O, is made up of [Mo5O15(HPO4)2]4− clusters, iminodiethylenediammonium cations and solvent water molecules. The [Mo5O15(HPO4)2]4− cluster, with approximate C2 symmetry, can be considered as a ring formed by five distorted edge‐ and corner‐sharing MoO6 octahedra, capped on both poles by a hydrophosphate tetrahedron. There exist N—H⋯O, O—H⋯N and C—H⋯O hydrogen bonds between the organic ammonium groups and the clusters, with interatomic N⋯O distances ranging from 2.675 (3) to 2.999 (3) Å, and C⋯O distances ranging from 3.139 (5) to 3.460 (5) Å. 相似文献
10.
>From Small Fragments to New Poly‐alkoxo‐oxo‐metalate Derivatives: Syntheses and Crystal Structures of K4[VIV12O12(OCH3)16(C4O4)6], Cs10[VIV24O24(OCH3)32(C4O4)12][VIV8O8(OCH3)16(C2O4)], and M2[VIV8O8(OCH3)16(VIVOF4)] (M = [N(nBu)4] or [NEt4]) By solvothermal reaction of ortho‐vanadicacid ester [VO(OMe)3] with squaric acid and potassium or caesium hydroxide the compounds K4[VIV12O12(OCH3)16(C4O4)6] ( 2 ) and Cs10[VIV24O24(OCH3)32(C4O4)12][VIV8O8(OCH3)16(C2O4)] ( 3 ) could be syntesized. With tetra‐n‐butyl‐ or tetra‐n‐ethylammonium fluoride [N(nBu)4]2[VIV8O8(OCH3)16(VIVOF4)] ( 4 ) and [N(Et)4]2[VIV8O8(OCH3)16(VIVOF4)] ( 5 ) could be isolated. In 2 and 3 the corners of a tetrahedron or cube resp. are occupied by {(VO)3(OMe)4} groups and connected along the edges of the tetrahedron resp. cube by six or twelve resp. squarato‐groups. The octanuclear anions in the compounds 3 , 4 , and 5 are assumedly built up by fragments of the ortho‐vanadicacid ester [VO(OMe)3]. Around the anions C2O42— or VOF4— these oligormeric chains are closed to a ring . Crystal data: 2 , tetragonal, P43, a = 18.166(3)Å, c = 29.165(7)Å, V = 9625(3)Å3, Z = 4, dc = 1.469 gcm—3; 3 , orthorhombic, Pbca, a = 29.493(5)Å, b = 25.564(4)Å, c = 31.076Å, V = 23430(6)Å3, Z = 4, dc = 1.892 gcm—3; 4 , monoclinic, P21/n, a = 9.528(1)Å, b = 23.021(2)Å, c = 19.303(2)Å, β = 92.570(2)°, V = 4229.8(5)Å3, Z = 2, dc = 1.391 gcm—3; 5 , monoclinic, P21/n, a = 16.451(2)Å, b = 8.806(1)Å, c = 23.812(1)Å, β = 102.423(2)°, V = 3368.7(6)Å3, Z = 2, dc = 1.534 gcm—3. 相似文献
11.
Alkoxo Compounds of Iron(III): Syntheses and Characterization of [Fe2(OtBu)6], [Fe2Cl2(OtBu)4], [Fe2Cl4(OtBu)2] and [N(nBu)4]2[Fe6OCl6(OMe)12] The reaction of iron(III)chloride in diethylether with sodium tert‐butylat yielded the homoleptic dimeric tert‐‐butoxide Fe2(OtBu)6 ( 1 ). The chloro‐derivatives [Fe2Cl2(OtBu)4] ( 2 ), and [Fe2Cl4(OtBu)2] ( 3 ) could be synthesized by ligand exchange between 1 and iron(III)chloride. Each of the molecules 1 , 2 , and 3 consists of two edge‐sharing tetrahedrons, with two tert‐butoxo‐groups as μ2‐bridging ligands. For the synthesis of the alkoxides 1 , 2 , and 3 diethylether plays an important role. In the first step the dietherate of iron(III)chloride FeCl3(OEt2)2 ( 4 ) is formed. The reaction of iron(III)chloride with tetrabutylammonium methoxide in methanol results in the formation of a tetrabutylammonium methoxo‐chloro‐oxo‐hexairon cluster [N(nBu)4]2[Fe6OCl6(OMe)12] ( 5 ). Crystal structure data: 1 , triclinic, P1¯, a = 9.882(2) Å, b = 10.523(2) Å, c = 15.972(3) Å, α = 73.986(4)°, β = 88.713(4)°, γ = 87.145(4)°, V = 1594.4(5) Å3, Z = 2, dc = 1.146 gcm—1, R1 = 0.044; 2 , monoclinic, P21/n, a = 11.134(2) Å, b = 10.141(2) Å, c = 12.152(2) Å und β = 114.157(3)°, V = 1251.8(4) Å3, Z = 2, dc = 1.377 gcm—1, R1 = 0.0581; 3 , monoclinic, P21/n, a = 6.527(2) Å, b = 11.744(2) Å, c = 10.623(2), β = 96.644(3)°, V = 808.8(2) Å3, Z = 2, dc = 1.641 gcm—1, R1 = 0.0174; 4 , orthorhombic, Iba2, a = 23.266(5) Å, b = 9.541(2) Å, c = 12.867(3) Å, V = 2856(2) Å3, Z = 8, dc = 1.444 gcm—1, R1 = 0.0208; 5 , trigonal, P31, a = 13.945(2) Å, c = 30.011(6) Å, V = 5054(2) Å3, Z = 6, dc = 1.401 gcm—1; Rc = 0.0494. 相似文献
12.
Nobuyuki Matsushita 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(2):m33-m36
The title compound, {[PtIIPtIVI2(C2H8N2)4](HPO4)(H2PO4)I·3H2O}n, has a chain structure composed of square‐planar [Pt(en)2]2+ and elongated octahedral trans‐[PtI2(en)2]2+ cations (en is ethylenediamine) stacked alternately along the c axis and bridged by the I atoms; a three‐dimensionally valence‐ordered system exists with respect to the Pt sites. The title compound also has a unique cyclic tetramer structure composed of two hydrogenphosphate and two dihydrogenphosphate ions connected by strong hydrogen bonds [O⋯O = 2.522 (10), 2.567 (10) and 2.569 (11) Å]. The Pt and I atoms form a zigzag ⋯I—PtIV—I⋯PtII⋯ chain, with PtIV—I bond distances of 2.6997 (7) and 2.6921 (7) Å, interatomic PtII⋯I distances of 3.3239 (8) and 3.2902 (7) Å, and PtIV—I⋯PtII angles of 154.52 (3) and 163.64 (3)°. The structural parameters indicating the mixed‐valence state of platinum, expressed by δ = (PtIV—I)/(PtII—I), are 0.812 and 0.818 for the two independent I atoms. 相似文献
13.
New complexes derived from M3+ salts with polyazine as monometallic such as [Fe (TPPZ)Cl3].½H2O (1) , [Cr (TPPZ)2Cl2]Cl.2EtOH (2) , [La (TPPZ)(NO3)2(H2O)2]NO3.H2O (3) in addition to [Fe (Phen)3]3Cl.7H2O (4) were isolated. Three bimetallic, [H2TPPZ][(AuCl4)2]. H2O (5) , [Ce2(TPPZ)EtOH (NO3)3]3NO3 (6) and [Nd2TPPZCl2(H2O)4]4Cl.CHCl3. 4H2O (7) and mixed ligand complexes, [Fe (TPPZ)(Phen)2]Cl3 (8) , [Fe (TPPZ) (Phen)2][TPPZCl3] (9) , [La2(TPPZ)(Phen)2(EtOH)2]6Cl.CHCl3.EtOH.H2O (10) and [Nd2(TPPZ)(Phen)Cl4]2Cl.3H2O (11) were synthesized and characterized. Crystal data of (4) is tetragonal, I41/a, a = b 35.951 (3) Å, c = 11.9055 (8) Å, α = 80.201 (2)° β = 78.846 (2)°, γ = 89.687 (2)° V = 741.06 (5)Å3, Z = 1 while triclinic, P1, a = 7.3913 (3) Å, b = 9.7344 (4) Å, c = 10.6577 (4) Å, α = β = γ = 90°, V = 741.06 (5)Å3 and Z = 170 for (5) . Analyses, spectral and cyclic voltammetry studies indicate the bonding and the redox properties. Anticancer studies promised to be effective in lanthanides and some complexes were screened against antibacterial or antifungal. 相似文献
14.
Xiuli Wang Prof. Hailiang Hu Baokuan Chen Hongyan Lin Guocheng Liu Jin Li 《无机化学与普通化学杂志》2009,635(15):2692-2696
Two new inorganic–organic vanadate hybrid compounds [Mn(Hbbi)2(V4O12)] ( 1 ) and [Cd(Hbbi)2(V4O12)] ( 2 ) (bbi = 1,1’‐(1,4‐butanediyl)bis(imidazole)) were hydrothermally synthesized and characterized by elemental analyses, IR spectroscopy, TG and single‐crystal X‐ray diffraction. The two compounds crystallize in monoclinic system, P21/c space group with a = 8.556(5) Å, b = 10.761(5) Å, c = 16.917(5) Å, β = 93.032(5) o, V = 1555.4(12) Å3, Z = 2, R = 0.0390 for 1 and a = 8.657(5) Å, b = 10.743 (5) Å, c = 16.864 (5) Å, β = 93.81(5)o, V = 1564.9 (12) Å3, Z = 2, R = 0.0717 for 2 . Single‐crystal X‐ray diffraction analysis reveals that the two compounds are isostructural and both consist of one‐dimensional (1D) chains, which are constructed from vanadate anion clusters and [M(Hbbi)2]4+ cation groups [M = MnII ( 1 ), CdII ( 2 )]. Moreover, the polymeric chains are ultimately packed into a three‐dimensional (3D) supramolecular framework through C–H ··· O and N–H ··· O hydrogen bonding interactions. 相似文献
15.
Reactions of rubidium or barium salts of the ortho‐selenostannate anion, [Rb4(H2O)4][SnSe4] ( 1 ) or [Ba2(H2O)5][SnSe4] ( 2 ) with Zn(OAc)2 or ZnCl2 in aqueous solution yielded two novel compounds with different ternary Zn/Sn/Se anions, [Rb10(H2O)14.5][Zn4(μ4‐Se)2(SnSe4)4] ( 3 ) and [Ba5(H2O)32][Zn5Sn(μ3‐Se)4(SnSe4)4] ( 4 ). 1 – 4 have been determined by means of single crystal X‐ray diffraction: 1 : triclinic space group lattice dimensions at 203 K: a = 8.2582(17) Å, b = 10.634(2) Å, c = 10.922(2) Å, α = 110.16(3)°, β = 91.74(3)°, γ = 97.86(3)°, V = 888.8(3) Å3; R1 [I > 2σ(I)] = 0.0669; wR2 = 0.1619; 2 : orthorhombic space group Pnma; lattice dimensions at 203 K: a = 17.828(4) Å, b = 11.101(2) Å, c = 6.7784(14) Å, V = 1341.5(5) Å3; R1 [I > 2σ(I)] = 0.0561; wR2 = 0.1523; 3 : triclinic space group ; lattice dimension at 203 K: a = 17.431(4) Å, b = 17.459(4) Å, c = 22.730(5) Å, α = 105.82(3)°, β = 99.17(3)°, γ = 90.06(3)°, V = 6563.1(2) Å3; R1 [I > 2σ(I)] = 0.0822; wR2 = 0.1782; 4 : monoclinic space group P21/c; lattice dimensions at 203 K: a = 25.231(5) Å, b = 24.776(5) Å, c = 25.396(5) Å, β = 106.59(3)°, V = 15215.0(5) Å3; R1 [I > 2σ(I)] = 0.0767; wR2 = 0.1734. The results serve to underline the crucial role of the counterion for the type of ternary anion to be observed in the crystal. Whereas Rb+(aq) stabilizes a P1‐type Zn/Sn/Se supertetrahedron in 3 like K+, the Ba2+(aq) ions better fit to an anionic T3‐type Zn/Sn/Se cluster arrangement as do Na+ ions. It is possible to estimate a radius:charge ratio for the stabilization of the two structural motifs. 相似文献
16.
Olga M. Nazarenko Eduard B. Rusanov Alexander N. Chernega Konstantin V. Domasevitch 《Acta Crystallographica. Section C, Structural Chemistry》2013,69(3):232-236
In poly[[bis(μ‐4,4′‐bi‐1H‐pyrazole‐κ2N2:N2′)bis(3‐carboxyadamantane‐1‐carboxylato‐κO1)cobalt(II)] dihydrate], {[Co(C12H15O4)2(C6H6N4)2]·2H2O}n, (I), the Co2+ cation lies on an inversion centre and the 4,4′‐bipyrazole (4,4′‐bpz) ligands are also situated across centres of inversion. In its non‐isomorphous cadmium analogue, {[Cd(C12H15O4)2(C6H6N4)2]·2H2O}n, (II), the Cd2+ cation lies on a twofold axis. In both compounds, the metal cations adopt an octahedral coordination, with four pyrazole N atoms in the equatorial plane [Co—N = 2.156 (2) and 2.162 (2) Å; Cd—N = 2.298 (2) and 2.321 (2) Å] and two axial carboxylate O atoms [Co—O = 2.1547 (18) Å and Cd—O = 2.347 (2) Å]. In both structures, interligand hydrogen bonding [N...O = 2.682 (3)–2.819 (3) Å] is essential for stabilization of the MN4O2 environment with its unusually high (for bulky adamantanecarboxylates) number of coordinated N‐donor co‐ligands. The compounds adopt two‐dimensional coordination connectivities and exist as square‐grid [M(4,4′‐bpz)2]n networks accommodating monodentate carboxylate ligands. The interlayer linkage is provided by hydrogen bonds from the carboxylic acid groups via the solvent water molecules [O...O = 2.565 (3) and 2.616 (3) Å] to the carboxylate groups in the next layer [O...O = 2.717 (3)–2.841 (3) Å], thereby extending the structures in the third dimension. 相似文献
17.
NaSc3[HPO3]2[HPO2(OH)]6 was prepared by use of a phosphorus acid flux route. The crystal structure was determined from single‐crystal X‐ray diffraction data: triclinic, space group P$\bar{1}$ (No. 2), a = 7.4507(11) Å, b = 9.6253(17) Å, c = 9.6141(16) Å, α = 115.798(4)°, β = 101.395(4)°, γ = 101.136(3)°, V = 577.29(16) Å3 and Z = 1. The crystal structure of NaSc3[HPO3]2[HPO2(OH)]6 contains two kinds of phosphate(III) groups: HPO32– and HPO2(OH)–. Phosphate(III)‐tetrahedra, NaO6 and ScO6 octahedra together form a (3,6)‐connected net. During heating hydrogen and water are released and Sc[PO3]3 is formed as the main crystalline decomposition product. 相似文献
18.
Zhi‐Guo Zhong Yu‐Quan Feng Ping Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2013,69(8):833-836
A novel copper–niobium oxyfluoride, {[Cu2(C10H7N2O)2][NbOF4]}n, has been synthesized by a hydrothermal method and characterized by elemental analysis, EDS, IR, XPS and single‐crystal X‐ray diffraction. The structural unit consists of one C2‐symmetric [NbOF4]− anion and one centrosymmetric coordinated [Cu2(obpy)2]+ cation (obpy is 2,2′‐bipyridin‐6‐olate). In the [NbOF4]− anion, each NbV metal centre is five‐coordinated by four F atoms and one O atom in the first coordination shell, forming a square‐pyramidal coordination geometry. These square pyramids are then further connected to each other via trans O atoms [Nb—O = 2.187 (3) Å], forming an infinite linear {[NbOF4]−}n polyanion. In the coordinated [Cu2(obpy)2]+ cation, the oxidation state of each Cu site is disordered, which is confirmed by the XPS results. The disordered Cu sites are coordinated by two N atoms and one O atom from two different obpy ligands. The [NbOF4]− and [Cu2(obpy)2]+ units are assembled via weak C—H...F hydrogen bonds, resulting in the formation of a three‐dimensional supramolecular structure. π–π stacking interactions between the pyridine rings [centroid–centroid distance = 3.610 (2) Å] may further stabilize the crystal structure. 相似文献
19.
Olena V. Sharga Andrey B. Lysenko Harald Krautscheid Konstantin V. Domasevitch 《Acta Crystallographica. Section C, Structural Chemistry》2010,66(9):m269-m272
The bitopic ligand 1,2‐bis(1,2,4‐triazol‐4‐yl)ethane (tr2eth) provides an unprecedented short‐distance N1:N2‐triazole bridging of CuI and VIV ions in poly[bis[μ4‐1,2‐bis(1,2,4‐triazol‐4‐yl)ethane]di‐μ2‐fluorido‐tetrafluoridodi‐μ2‐oxido‐dicopper(I)divanadium(IV)], [Cu2V2F6O2(C6H8N6)2]n. The CuI ions and tr2eth linkers afford a two‐dimensional square‐grid topology involving centrosymmetric (tr)Cu(μ‐tr)2Cu(tr) [tr is triazole; Cu—N = 1.9525 (16)–2.0768 (18) Å] binuclear net nodes, which are expanded in a third dimension by centrosymmetric [V2O2F6]2− pillars. The concerted μ‐tr and μ‐O bridging between the CuI and VIV ions allows a multi‐centre accommodation of the vanadium oxyfluoride moiety on a cationic Cu/tr2eth matrix [Cu—O = 2.1979 (15) Å and V—N = 2.1929 (17) Å]. The distorted octahedral coordination of [VONF4] is completed by two terminal and two bridging F− ions [V—F = 1.8874 (14)–1.8928 (13) and 2.0017 (13)–2.1192 (12) Å, respectively]. The resulting three‐dimensional framework has a primitive cubic net topology and adopts a threefold interpenetration. 相似文献
20.
Employing the common pyridine (=py) solvent as the source of structure-directing agents (SDAs), a novel three-dimensional open-framework beryllium phosphite (Hpy)4[Be6(HPO3)8]·H2O (1), has been solvothermally synthesized and structurally characterized by IR, elemental analysis, thermogravimetric analysis, powder and single-crystal X-ray diffractions. It crystallizes in the orthorhombic system, space group Pbca (No. 61), a = 20.0034(4) Å, b = 20.2188(4) Å, c = 20.9731(3) Å, V = 8482.5(3) Å3, and Z = 8. The alternating connection of BeO4 tetrahedra and HPO3 pseudopyramids give rise to a (3, 4)-connected network with multidirectional intersecting 12-ring channels. The compound possesses a low density and a new {4.8.10}{42.6.8.10.12}{42.6}3{42.8.102.12}{43.62.8} topology. 相似文献