共查询到20条相似文献,搜索用时 31 毫秒
1.
Roman V. Shpanchenko Enrique E. Kaul Christoph Geibel Evgeny V. Antipov 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(10):i88-i90
The structure of dilead vanadium oxide bis(phosphate) contains corrugated layers formed by VO5 square pyramids oriented in opposite directions in a chessboard fashion. The pyramids are connected by tetrahedral PO4 groups. The layers are separated by the Pb atoms and isolated PO4 tetrahedra. 相似文献
2.
Natalia V. Kuratieva Marina I. Naumova Dmitry Yu. Naumov 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(9):i129-i131
The title compounds, hexaaquacobalt(II) bis(hypophosphite), [Co(H2O)6](H2PO2)2, and hexaaquacobalt(II)/nickel(II) bis(hypophosphite), [Co0.5Ni0.5(H2O)6](H2PO2)2, are shown to adopt the same structure as hexaaquamagnesium(II) bis(hypophosphite). The packing of the Co(Ni) and P atoms is the same as in the structure of CaF2. The CoII(NiII) atoms have a pseudo‐face‐centred cubic cell, with a = b~ 10.3 Å, and the P atoms occupy the tetrahedral cavities. The central metal cation has a slightly distorted octahedral coordination sphere. The geometry of the hypophosphite anion in the structure is very close to ideal, with point symmetry mm2. Each O atom of the hypophosphite anion is hydrogen bonded to three water molecules from different cation complexes, and each H atom of the hypophosphite anion is surrounded by three water molecules from further different cation complexes. 相似文献
3.
Olga V. Yakubovich Ian M. Steele Olga V. Dimitrova 《Acta Crystallographica. Section C, Structural Chemistry》2008,64(7):i62-i65
In dirubidium copper bis[vanadyl(V)] bis(phosphate), Rb2Cu(VO2)2(PO4)2, three different oxo complexes form an anionic framework. VO5 polyhedra in a trigonal bipyramidal configuration and PO4 tetrahedra share vertices to form eight‐membered rings, which lie in layers perpendicular to the a axis of the monoclinic unit cell. Cu atoms at centres of symmetry have square‐planar coordination and link these layers along [100] to form a three‐dimensional anionic framework, viz. [Cu(VO2)2(PO4)2]∞2−. Intersecting channels in the [100], [001] and [011] directions contain Rb+ cations. Topological relations between this new structure type and the crystal structures of A(VO2)(PO4) (A = Ba, Sr or Pb) and BaCrF2LiF4 are discussed. 相似文献
4.
Natalia V. Kuratieva Marina I. Naumova Dmitry Yu. Naumov Nina V. Podberezskaya 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(1):i1-i3
The structure of hexaaquanickel(II) bis(hypophosphite), [Ni(H2O)6](H2PO2)2, has been determined. The crystals are prismatic. The packing of the Ni and P atoms (not the entire hypophosphite anions) is the same as in the structures of [Co(H2O)6](H2PO2)2 and [Co0.5Ni0.5(H2O)6](H2PO2)2. The NiII cations have a pseudo‐face‐centered cubic cell, with cell parameter a 10.216 Å and tetrahedral cavities occupied by P atoms. The NiII cation has crystallographically imposed twofold symmetry and has an octahedral coordination sphere consisting of six water O atoms, two of which also lie on the twofold axis. The planes of oppositely coordinated water molecules are in a cross conformation. The geometry of the hypophosphite anion is close to point symmetry mm2. The hypophosphite anions are hydrogen bonded to the coordinated water molecules. 相似文献
5.
Guo‐You Luan En‐Bo Wang Wan‐Sheng You Lin Xu Qin‐Lin He 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(7):e284-e285
The title compound, tetrakis(ethylenediammonium) tetra‐μ‐hydrogenphosphato‐di‐μ‐hydroxo‐ tetra‐μ‐phosphato‐bis(aquacobalt)hexakis(oxovanadium) trihydrate, was synthesized hydrothermally at moderate temperature. The structure consists of diprotonated ethylenediammonium cations and layers of the polyanions. The polyanion contains four PO4 tetrahedra and three VO5 square pyramids that are linked through corner‐sharing by alternating P—O—V, which gives rise to a chain. The chains, connected by CoO4(H2O)2 octahedra, form layers, resulting in a two‐dimensional layered structure. The Co—O distances are in the range 1.984 (3)–2.038 (4) Å, the P—O distances 1.508 (3)–1.575 (3) Å and the V—O distances 1.585 (3)–2.010 (3) Å. 相似文献
6.
Nobuo Okabe Yasunori Muranishi 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(6):m228-m230
The title complexes, trans‐diaquabis(quinoline‐2‐carboxylato‐κ2N,O)cobalt(II)–water–methanol (1/2/2), [Co(C10H6NO2)2(H2O)2]·2CH4O·2H2O, and trans‐diaquabis(quinoline‐2‐carboxylato‐κ2N,O)nickel(II)–water–methanol (1/2/2), [Ni(C10H6NO2)2(H2O)2]·2CH4O·2H2O, are isomorphous and contain CoII and NiII ions at centers of inversion. Both complexes have the same distorted octahedral coordination geometry, and each metal ion is coordinated by two quinoline N atoms, two carboxylate O atoms and two water O atoms. The quinoline‐2‐carboxylate ligands lie in trans positions with respect to one another, forming the equatorial plane, with the two water ligands occupying the axial positions. The complex molecules are linked together by hydrogen bonding involving a series of ring patterns which include the uncoordinated water and methanol molecules. 相似文献
7.
Sin C. James Yvonne G. Lawson Nicholas C. Norman A. Guy Orpen Michael J. Quayle 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(4):427-429
Two pentahalo(N‐donor)bismuthate(III) salts, bis[hydrogen bis(4‐picoline)(1+)] pentabromo(4‐picoline‐N)bismuthate(III), (C12H15N2)2[BiBr5(C6H7N)], (I), and bis(pyridinium) pentachloro(pyridine‐N)bismuthate(III), (C5H6N)2[BiCl5(C5H5N)], (II), are described which show modest deviations from octahedral geometry at bismuth. In (I), the cations comprise two 4‐picoline molecules sharing a proton and in (II), pyridinium cations are present. The anion in (I) has twofold and that in (II) has mirror crystallographic symmetry. Both structures show a layered packing formed by the anions with the cations between the layers. Ring–ring interactions seem important in (I), whilst in (II), N/C—H?Cl—Bi hydrogen bonding is abundant. 相似文献
8.
Ana María Atria Piedad Corts María Teresa Garland Ricardo Baggio 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(10):m396-m398
The structures of aquadichlorobis(1H‐imidazole)cobalt(II), [CoCl2(Him)2(H2O)2] (Him is 1H‐imidazole, C3H4N2), (I), and aquadichlorobis(1H‐imidazole)nickel(II), [NiCl2(Him)2(H2O)2], (II), are isomorphous and consist of monomers with inversion symmetry. The three monodentate ligands (imidazole, chlorine and aqua), together with their symmetry equivalents, define almost perfect octahedra. Hydrogen‐bonding interactions via the imidazole and aqua H atoms lead to a three‐dimensional network. 相似文献
9.
Uwe Kolitsch 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(3):m129-m133
Rubidium chromium(III) dioxalate dihydrate [diaquabis(μ‐oxalato)chromium(III)rubidium(I)], [RbCr(C2O4)2(H2O)2], (I), and dicaesium magnesium dioxalate tetrahydrate [tetraaquabis(μ‐oxalato)magnesium(II)dicaesium(I)], [Cs2Mg(C2O4)2(H2O)4], (II), have layered structures which are new among double‐metal oxalates. In (I), the Rb and Cr atoms lie on sites with imposed 2/m symmetry and the unique water molecule lies on a mirror plane; in (II), the Mg atom lies on a twofold axis. The two non‐equivalent Cr and Mg atoms both show octahedral coordination, with a mean Cr—O distance of 1.966 Å and a mean Mg—O distance of 2.066 Å. Dirubidium copper(II) dioxalate dihydrate [diaquabis(μ‐oxalato)copper(II)dirubidium(I)], [Rb2Cu(C2O4)2(H2O)2], (III), is also layered and is isotypic with the previously described K2‐ and (NH4)2CuII(C2O4)2·2H2O compounds. The two non‐equivalent Cu atoms lie on inversion centres and are both (4+2)‐coordinated. Hydrogen bonds are medium‐strong to weak in the three compounds. The oxalate groups are slightly non‐planar only in the Cs–Mg compound, (II), and are more distinctly non‐planar in the K–Cu compound, (III). 相似文献
10.
Christopher G. Pernin James A. Ibers 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(3):376-378
The X‐ray crystal structures of P,P′‐iminobis(diphenylselenophosphine) tetrahydrofuran solvate, C24H21NP2Se2·C4H8O, (I), and bis(tetrahydrofuran) solvate, C24H21NP2Se2·2C4H8O, (II), have been determined; (I) has twofold crystallographic symmetry. In each compound, the O atom of one molecule of tetrahydrofuran is hydrogen bonded to the amide‐H atom of HN(SePPh2)2. The conformation of the Se—P—N—P—Se chains in (I), (II), and the crystal structure of the unsolvated HN(SePPh2)2 are different. 相似文献
11.
Dmitry Yu. Naumov Natalia V. Kuratieva 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(1):i9-i10
The structure of rhombohedral (R) iron(III) tris[dihydrogenphosphate(I)] or iron(III) hypophosphite, Fe(H2PO2)3, has been determined by single‐crystal X‐ray diffraction. The structure consists of [001] chains of Fe3+ cations in octahedral sites with symmetry bridged by bidentate hypophosphite anions. 相似文献
12.
Elguja B. Miminoshvili Alexandre N. Sobolev Tamara N. Sakvarelidze Ketevan E. Miminoshvili Elguja R. Kutelia 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(4):m118-m120
In order to model processes of chemisorption in organic salts formed between dinitrobenzoic acids (DNBH) and secondary amines (R2NH), a series of compounds of composition [MII(3,5‐DNB)2(DMSO)2(H2O)2] (where MII is Zn, Cu, Ni or Co, 3,5‐DNB is the 3,5‐dinitrobenzoate ion, and DMSO is dimethyl sulfoxide) have been prepared. In diaquabis(dimethyl sulfoxide)bis(3,5‐DNB)zinc(II), [Zn(C7H3N2O6)2(C2H6OS)2(H2O)2], the 3,5‐DNB ions and molecules of DMSO are monodentate ligands that are coordinated to the Zn atom through their O atoms. These ligands, together with two molecules of water, form a slightly distorted octahedral coordination environment for the Zn atom, which lies on a center of symmetry. 相似文献
13.
Abderrahmen Guesmi Ahmed Driss 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(1):i16-i17
The structure of the hydrothermally synthesized compound AgCo3PO4(HPO4)2, silver tricobalt phosphate bis(hydrogen phosphate), consists of edge‐sharing CoO6 chains linked together by the phosphate groups and hydrogen bonds. The three‐dimensional framework delimits two types of tunnels which accommodate Ag+ cations and OH groups. The title compound is isostructural with the compounds AM3H2(XO4)3 (A = Na or Ag, M = Co or Mn, and X = P or As) of the alluaudite structure type. 相似文献
14.
Juraj Kuchr Juraj ernk Werner Massa 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(8):m418-m420
The title compound, bis[diaquabis(ethylenediamine‐κ2N,N′)copper(II)] hexacyanoiron(II) tetrahydrate, [Cu(C2H8N2)2(H2O)1.935]2[Fe(CN)6]·4H2O, was crystallized from an aqueous reaction mixture initially containing CuSO4, K3[Fe(CN)6] and ethylenediamine (en) in a 3:2:6 molar ratio. Its structure is ionic and is built up of two crystallographically different cations, viz. [Cu(en)2(H2O)2]2+ and [Cu(en)2(H2O)1.87]2+, there being a deficiency of aqua ligands in the latter, [Fe(CN)6]4− anions and disordered solvent water molecules. All the metal atoms lie on centres of inversion. The Cu atom is octahedrally coordinated by two chelate‐bonded en molecules [mean Cu—N = 2.016 (2) Å] in the equatorial plane, and by axial aqua ligands, showing very long distances due to the Jahn–Teller effect [mean Cu—O = 2.611 (2) Å]. In one of the cations, significant underoccupation of the O‐atom site is observed, correlated with the appearance of a non‐coordinated water molecule. This is interpreted as the partial contribution of a hydrate isomer. The [Fe(CN)6]4− anions form quite regular octahedra, with a mean Fe—C distance of 1.913 (2) Å. The dominant intermolecular interactions are cation–anion O—H⋯N hydrogen bonds and these interactions form layers parallel to (001). 相似文献
15.
Yang Kim Brian W. Skelton Allan H. White 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(12):m546-m548
In title anhydrous catena‐poly[[trans‐bis(ethane‐1,2‐diamine‐κ2N,N′)copper(II)]‐μ‐dithionato‐κ2O:O′], [Cu(S2O6)(C2H8N2)2]n or [{H2N(CH2)2NH2}2Cu(O·O2SSO2·O)]∞, successive Cu atoms are bridged by a single doubly charged dithionate group, forming a one‐dimensional polymer with inversion centres at the metal atoms and the mid‐point of the S—S bond [Cu—O = 2.5744 (15) Å]. In title (hydrated) trans‐diaquabis(propane‐1,3‐diamine‐κ2N,N′)copper(II) dithionate, [Cu(C3H10N2)2(H2O)2](S2O6) or [{H2N(CH2)3NH2}2Cu(OH2)2](S2O6), both ions have imposed 2/m symmetry. The `axial' anion components are displaced by a pair of water ligands [Cu—O = 2.439 (3) Å], the shorter Cu—O distance being compensated by the lengthened Cu—N distance [2.0443 (18), cf. 2.0100 (13) and 2.0122 (16) Å]. 相似文献
16.
Ricardo Baggio Mireille Perec Maria Teresa Garland 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(5):m175-m177
A polymeric heterometallic compound, {[Gd2Zn3(C4H4O5)6(H2O)6]·12H2O}n, comprising zinc(II) and gadolinium(III) cations bridged by carboxylate groups from oxydiacetate ligands, is presented. The GdIII cations lie at sites with crystallographic 32 symmetry and display a tricapped trigonal‐prism arrangement, which is defined by six carboxyl and three ether O atoms. The ZnII cations lie at sites with imposed 2/m symmetry and are octahedrally coordinated by four carboxyl O atoms and two apical water ligands, which form strong intramolecular hydrogen bonds. Comparison is made with the previously reported isostructural homologous copper–gadolinium complex. 相似文献
17.
Kristin Kirschbaum Olaf Conrad Dean M. Giolando 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(12):e541-e541
Amido complexes of titanium are useful reagents in a variety of syntheses and as precursors for chemical vapour deposition of TiN. The title compound, dichlorobis(dimethylamido)(dimethylamine)titanium(IV), [TiCl2(C2H6N)2(C2H7N)], crystallizes with one molecule in the asymmetric unit. The neutral complex shows an unusual fivefold coordination of the titanium centre with a distorted trigonal–bipyramidal geometry and the dimethylamine molecule occupying an axial position. 相似文献
18.
Yasunori Muranishi Nobuo Okabe 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(12):m578-m580
trans‐Diaquabis(isoquinoline‐1‐carboxylato‐κ2N,O)cobalt(II) dihydrate, [Co(C10H6NO2)2(H2O)2]·2H2O, and trans‐diaquabis(isoquinoline‐1‐carboxylato‐κ2N,O)nickel(II) dihydrate, [Ni(C10H6NO2)2(H2O)2]·2H2O, contain the same isoquinoline ligand, with both metal atoms residing on a centre of symmetry and having the same distorted octahedral coordination. In the former complex, the Co—O(water) bond length in the axial direction is 2.167 (2) Å, which is longer than the Co—O(carboxylate) and Co—N bond lengths in the equatorial plane [2.055 (2) and 2.096 (2) Å, respectively]. In the latter complex, the corresponding bond lengths for Ni—O(water), Ni—O(carboxylate) and Ni—N are 2.127 (2), 2.036 (2) and 2.039 (3) Å, respectively. Both crystals are stabilized by similar stacking interactions of the ligand, and also by hydrogen bonds between the hydrate and coordinated water molecules. 相似文献
19.
Chong‐Hyeak Kim Sueg‐Geun Lee 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(7):m421-m423
The title compound, [Ni(C3H10N2)2(H2O)2](C6H6NO3S)2, contains alternating layers of sulfanilate anions and diaquabis(1,3‐propanediamine)nickel(II) cations. The Ni atom lies on an inversion centre and is hexacoordinated by the 1,3‐propanediamine ligands, which function as N,N′‐bidentate ligands, and the water molecules, which are in a trans arrangement. The sulfanilate anions are arranged in layers, with the sulfonate and amine groups directed towards opposite sides of the layer. The structure is stabilized by a network of hydrogen bonding between the O and N atoms of the sulfanilate anions, the water molecules, and the N atoms of the 1,3‐propanediamine ligands. 相似文献
20.
Dmitry Yu. Naumov Anton I. Smolentsev 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(5):i49-i50
The structure of barium chlorite hydrate, Ba(ClO2)2·3.5H2O, has been determined by single‐crystal X‐ray analysis at 150 K. The structure is monoclinic, space group C2/c, with Z = 8. It contains layers of Ba2+ cations coordinated by ClO2− anions and water molecules. There are also solvate water molecules involved only in hydrogen bonding of the layers. Three solvate water O atoms are on sites of twofold symmetry, while all other atoms are in general positions. The full coordination environment of the Ba2+ cation consists of ten O atoms belonging to six chlorites and three water molecules, forming a bicapped square antiprism. 相似文献