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1.
A new ammonium vanadium tellurate, (NH4)4{(VO2)2[Te2O8(OH)2]}·2H2O ( 1 ) was hydrothermally synthesized and characterized by elemental analyses, IR spectrum, TG analysis, and single crystal X–ray diffraction. Compound 1 crystallizes in the monoclinic system, space group P21/n, a = 7.3843(15) Å, b = 17.111(3) Å, c = 7.3916(15) Å, β = 118.88(3)°, V = 817.9(3) Å3, Z = 2, R1 (I>2σ(I)) = 0.0235, wR2 (all data) = 0.0462. The structure of 1 consists of infinite anionic chains, {(VO2)2[Te2O8(OH)2]}4? which contain octahedral VO6 and TeO5OH units. Each octahedral VO6 and TeO5OH unit is connected by sharing an edge to form V2O10 and Te2O8(OH)2 binuclear units. The V2O10 and Te2O8(OH)2 binuclear units are alternatively connected to one another, creating complete infinite {(VO2)2[Te2O8(OH)2]}4? chains along the c direction. The anionic chains are separated by ammonium cations and water molecules that link the chains through a network of hydrogen bonds. In addition, the structure contains an extended network of O–H·····O hydrogen bonds between the chains. 相似文献
2.
Rie Takagi Mats Johnsson 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(5):i38-i40
Single crystals of distrontium(II) dicopper(II) tellurium(VI) hexaoxide dibromide, Sr2Cu2TeO6Br2, were synthesized via solid state/gas phase reactions in sealed evacuated silica tubes. The building units are irregular SrO4Br3 polyhedra (a new type of coordination polyhedron around SrII), CuO5 square pyramids and TeO6 octahedra. The CuO5 square pyramids and the TeO6 octahedra together form layers in the bc plane bridged by Sr atoms. The Cu atoms are arranged to form puckered honeycomb layers. The Te atom lies on an inversion centre. 相似文献
3.
Debbie Cannon Christopher Glidewell John N. Low Antonio Quesada James L. Wardell 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(2):216-221
4-Methyl-2-nitroaniline, (I), C7H8N2O2, crystallizes with two molecules in the asymmetric unit. The molecules both form intramolecular N—H⃛O hydrogen bonds and they are linked into hydrogen-bonded C22(12) chains in which the two independent molecules alternate. 4,5-Dimethyl-2-nitroaniline, (II), C8H10N2O2, also has Z′ = 2 and the two independent molecules each form hydrogen-bonded C(6) chains. In 4-methyl-3-nitroaniline, (III), C7H8N2O2, there are four molecules in the asymmetric unit. Molecules of two of these types are linked by N—H⃛O hydrogen bonds into molecular ladders containing R43(18) rings and the other two types independently form single C(7) chains. 相似文献
4.
Ju‐Ying Hou Qi‐Yu Yang Han‐Hui Zhang Yi‐Ping Chen Jian‐Fu Xu Chang‐Cang Huang 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):i59-i60
A new three‐dimensional bimetallic tellurite, BaV2TeO8, was synthesized by the hydrothermal reaction of Ba(OH)2, TeO2 and V2O5, and characterized by single‐crystal X‐ray diffraction. The three‐dimensional framework is built up from anionic [V2TeO8]n2n− layers parallel to (101) and connected via Ba—O bonds. The anionic layers are formed by three types of polyhedra, namely VO5 tetragonal pyramids, VO4 tetrahedra and TeO4+2 `folded square' polyhedra. 相似文献
5.
Uwe Ruschewitz Ingo Pantenburg 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(9):m483-m484
In catena‐poly[[[triaquacadmium(II)]‐μ‐acetylenedicarboxylato‐κ4O,O′:O′′,O′′′] hydrate], {[Cd(C4O4)(H2O)3]·H2O}n, the CdII atom is coordinated by two bidentate carboxylate groups and three water molecules, thus forming a sevenfold coordination polyhedron with all atoms located on general sites. These polyhedra are connected by the bifunctional acetylenedicarboxylate ligands, forming zigzag chains running parallel to [120]. Hydrogen bonds, which involve the non‐coordinated water molecule, connect these chains to form a three‐dimensional framework. 相似文献
6.
Matthias Weil 《无机化学与普通化学杂志》2003,629(4):653-657
Single crystals of Hg2TeO5 were obtained as dark‐red parallelepipeds by reacting stoichiometric amounts of Hg(NO3)2 · H2O and H6TeO6 under hydrothermal conditions (250 °C, 10d). The crystal structure (space group Pna21, Z = 4, a = 7.3462(16), b = 5.8635(12), c = 9.969(2)Å, 1261 structure factors, 50 parameters, R[F2 > 2σ(F2)] = 0.0295) is characterized by corner‐sharing [TeO6] octahedra forming isolated chains [TeO4/1O2/2] which extend parallel to [100]. The two crystallographically independent Hg atoms are located in‐between the chains and interconnect the chains via common oxygen atoms. Amber coloured single crystals of Hg3TeO6 were prepared by heating a mixture of Hg, HgO and TeO3 together with small amounts of HgCl2 as mineralizer in an evacuated and sealed silica glass tube (520 °C). The previously reported crystal structure has been re‐investigated by means of single crystal X‐ray data which reveal a symmetry reduction from Ia3¯d to Ia3¯ (Z = 16, a = 13.3808(6) Å, 609 structure factors, 33 parameters, R[F2 > 2σ(F2)] = 0.0221). The crystal structure is made up of a body‐centred packing of [TeO6] octahedra with the Hg atoms situated in the interstices of this arrangement. Upon heating, both title compounds decompose in a one‐step mechanism under formation of TeO2 and loss of the appropriate amounts of elementary mercury and oxygen. 相似文献
7.
Two new vanadium tellurites, Cu(TATP)V2TeO8 (1) and Cu(DPPZ)V2Te2O10 (2), (TATP=1,4,8,9-tetranitrogen-trisphene, DPPZ=dipyridophenazine) have been synthesized under hydrothermal conditions and structurally characterized by elemental analyses, IR, and single-crystal X-ray diffraction. Compound 1 features an interesting two-dimensional layer structure constructed by [V2TeO8]n double-chain-like ribbons linked by [Cu(TATP)]2+ bridges. Compound 2 consists of two types of chiral layers: one left-handed and the other right-handed, which lead to racemic solid-state compound. In each layer, there exist two types of inorganic helical chains (V4Te4O8)n and (Te2O2)n, with same handedness. Two types of helical chains are linked by μ3(O6) atoms to generate a V/Te/O inorganic anionic layer. The [Cu(DPPZ)]2+ cationic complex fragments are covalently bonded to the layer, projecting below and above the vanadium tellurites layer. 相似文献
8.
E. Yang Zhao‐Ji Li Jian Zhang Yu‐Biao Chen Yuan‐Gen Yao 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(9):m457-m459
The reaction of cadmium chloride with pyridine‐2,6‐dicarboxylic acid (PDA) and 98% H2SO4 in ethanol led to the formation of the title compound, bis[μ‐6‐(ethoxycarbonyl)pyridine‐2‐carboxylato]‐1:2κ4O6,N,O2:O2;1:2κ4O2:O2,N,O6‐bis[diaquachlorocadmium(II)] dihydrate, [Cd2(C9H8NO4)2Cl2(H2O)4]·2H2O. PDA is esterified to monoethyl pyridine‐2,6‐dicarboxylate (MEPD) by the catalysis of H2SO4 during the reaction. The dinuclear CdII complex lies about an inversion centre and the unique Cd atom has a pentagonal–bipyramidal geometry. The two Cd atoms are bridged by two carboxylate O atoms, forming a planar Cd2O2 unit. Stair‐like chains are formed via O—H⋯Cl hydrogen bonds and these are further arranged into two‐dimensional layers via hydrogen bonds involving solvate water molecules. 相似文献
9.
Rie Takagi Mats Johnsson 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(10):i106-i108
Single crystals of dicalcium copper tetratellurium decaoxide dichloride, Ca2CuTe4O10Cl2, were synthesized via a transport reaction in sealed evacuated quartz glass tubes. The building units of the structure are irregular CaO7 polyhedra, centrosymmetric CuO4Cl2 octahedra and two crystallographically distinct TeO4E distorted bipyramids (E being the 5s2 lone pair of TeIV). The TeO4E and CuO4Cl2 polyhedra together form planes that are connected by the Ca atoms. The CuO4Cl2 octahedra are isolated from each other by the other building units. 相似文献
10.
Ljiljana Karanovi Dejan Poleti Jelena Rogan Goran A. Bogdanovi Anne Spasojevi‐de Bir 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(5):m275-m279
The title complexes, catena‐poly[[aqua(1,10‐phenanthroline‐κ2N,N′)cobalt(II)]‐μ‐benzene‐1,4‐dicarboxylato‐κ2O1:O4], [Co(C8H4O4)(C12H8N2)(H2O)], (I), and catena‐poly[[[(di‐2‐pyridyl‐κN‐amine)copper(II)]‐μ‐benzene‐1,4‐dicarboxylato‐κ4O1,O1′:O4,O4′] hydrate], [Cu(C8H4O4)(C10H9N3)]·H2O, (II), take the form of zigzag chains, with the 1,4‐benzenedicarboxylate ion acting as an amphimonodentate ligand in (I) and a bis‐bidentate ligand in (II). The CoII ion in (I) is five‐coordinate and has a distorted trigonal–bipyramidal geometry. The CuII ion in (II) is in a very distorted octahedral 4+2 environment, with the octahedron elongated along the trans O—Cu—O bonds and with a trans O—Cu—O angle of only 137.22 (8)°. 相似文献
11.
《Solid State Sciences》2004,6(6):519-522
The new compound Co6(TeO3)2(TeO6)Cl2 has been isolated during an investigation of the system CoO:CoCl2:TeO2. The new compound is deep purple in color and crystallizes in the tetragonal system, space group P42/mbc, a=8.3871(7) Å, c=18.5634(19) Å, Z=4. The Co(II) ions have octahedral [Co1O6] and tetrahedral [Co2O3Cl] coordinations. Tellurium is present both as Te(IV) with a tetrahedral [Te1O3E] coordination, where E is the 5s2 lone-pair and as Te(VI) with an octahedral [Te2O6] coordination. The structure is made up of intersecting layers of tetrahedra forming channels comprising octahedra chains that run along the c-axis. The new compound is the first cobalt tellurium oxochloride described. 相似文献
12.
Xiue Lin Yan‐Qin Wang Rong Cao Feng Li Wen‐Hua Bi 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):m292-m294
The title cadmium(II) polymer, catena‐poly[[[bis(4‐aminopyridine‐κN)aquacadmium(II)]‐μ‐1,4‐phenylenediacetato‐κ4O,O′:O′′,O′′′] dihydrate], {[Cd(C10H8O4)(C5H6N2)2(H2O)]·2H2O}n, comprises one‐dimensional wave‐like chains, in which the Cd atom is coordinated by 1,4‐phenylenediacetate and 4‐aminopyridine molecules. The 1,4‐phenylenediacetate ligands lie about inversion centres. Extensive hydrogen‐bonding interactions between the chains lead to a three‐dimensional structure. Free water molecules form chains in the structure. 相似文献
13.
X‐ray crystal structures are reported for Na6[RuO2{TeO4(OH)2}2]·16H2O and Na5[Ag{TeO4(OH)2}2]·16H2O which contain respectively RuVI and AgIII coordinated to chelating bidentate tellurate ([TeO4(OH)2]4−) groups. Na6[RuO2{TeO4(OH)2}2]·16H2O: Space group P1¯, Z = 2, lattice dimensions at 120 K; a = 6.9865(1), b = 8.7196(2), c = 11.7395(2)Å, α = 74.008(1), β = 79.954(1), γ = 88.514(1)°; R1 = 0.025. Na5[Ag{TeO4(OH)2}2]·16H2O: Space group P1¯, Z = 2, lattice dimensions at 120 K; a = 5.888(1), b = 8.932(1), c = 12.561(2)Å, α = 98.219(6), β = 97.964(9), γ = 93.238(14)°; R1 = 0.047. 相似文献
14.
Matthias Weil 《无机化学与普通化学杂志》2004,630(7):1048-1053
Single crystals of HgII(H4TeVIO6) (colourless to light‐yellow, rectangular plates) and HgI2(H4TeVIO6)(H6TeVIO6)·2H2O (colourless, irregular) were grown from concentrated solutions of orthotelluric acid, H6TeO6, and respective solutions of Hg(NO3)2 and Hg2(NO3)2. The crystal structures were solved and refined from single crystal diffractometer data sets (HgII(H4TeVIO6): space group Pna21, Z = 4, a =10.5491(17), b = 6.0706(9), c = 8.0654(13)Å, 1430 structure factors, 87 parameters, R[F2 > 2σ(F2)] = 0.0180; HgI2(H4TeVIO6)(H6TeVIO6)·2H2O: space group P1¯, Z = 1, a = 5.7522(6), b = 6.8941(10), c = 8.5785(10)Å, α = 90.394(8), β = 103.532(11), γ = 93.289(8)°, 2875 structure factors, 108 parameters, R[F2 > 2σ(F2)] = 0.0184). The structure of HgII(H4TeVIO6) is composed of ribbons parallel to the b axis which are built of [H4TeO6]2— anions and Hg2+ cations held together by two short Hg—O bonds with a mean distance of 2.037Å. Interpolyhedral hydrogen bonding between neighbouring [H4TeO6]2— groups, as well as longer Hg—O bonds between Hg atoms of one ribbon to O atoms of adjacent ribbons lead, to an additional stabilization of the framework structure. HgI2(H4TeVIO6)(H6TeVIO6)·2H2O is characterized by a distorted hexagonal array made up of [H4TeO6]2— and [H6TeO6] octahedra which spread parallel to the bc plane. Interpolyhedral hydrogen bonding between both building units stabilizes this arrangement. Adjacent planes are stacked along the a axis and are connected by Hg22+ dumbbells (d(Hg—Hg) = 2.5043(4)Å) situated in‐between the planes. Additional stabilization of the three‐dimensional network is provided by extensive hydrogen bonding between interstitial water molecules and O and OH‐groups of the [H4TeO6]2— and [H6TeO6] octahedra. Upon heating HgI2(H4TeVIO6)(H6TeVIO6)·2H2O decomposes into TeO2 under formation of the intermediate phases HgII3TeVIO6 and the mixed‐valent HgIITeIV/VI2O6. 相似文献
15.
Synthetic Cs(VO2)3(TeO3)2 is built up from infinite sheets of distorted octahedral VVO6 groups, sharing vertices. These octahedral layers are “capped” by Te atoms (as parts of pyramidal [TeIVO3]2– groups) on both faces of each V/O sheet, with inter‐layer, 12‐coordinate, Cs+ cations providing charge compensation. Cs(VO2)3(TeO3)2 is isostructural with M(VO2)3(SeO3)2 (M = NH4, K). Crystal data: Cs(VO2)3(TeO3)2, Mr = 732.93, hexagonal, space group P63 (No. 173), a = 7.2351(9) Å, c = 11.584(2) Å, V = 525.1(2) Å3, Z = 2, R(F) = 0.030, wR(F 2) = 0.063. 相似文献
16.
17.
Zoya A. Solodovnikova Sergey F. Solodovnikov 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(7):i53-i56
The crystal structures of dirubidium heptaoxodimolybdate, Rb2Mo2O7, and dicaesium heptaoxodimolybdate, Cs2Mo2O7, in the space groups Ama2 and P21/c, respectively, have been determined for the first time by single‐crystal X‐ray diffraction. The structures represent two novel structure types of monovalent ion dimolybdates, A2Mo2O7 (A = alkaline elements, NH4, Ag or Tl). In the structure of Rb2Mo2O7, Mo atoms are on a twofold axis, on a mirror plane and in a general position. One of the Rb atoms lies on a twofold axis, while three others are on mirror planes. Two O atoms attached to the Mo atom on a mirror plane are located on the same plane. Rubidium dimolybdate contains a new kind of infinite Mo–O chain formed from linked MoO4 tetrahedra and MoO6 octahedra alternating along the a axis, with two terminal MoO4 tetrahedra sharing corners with each octahedron. The chains stack in the [001] direction to form channels of an approximately square section filled by ten‐coordinate Rb ions. Seven‐ and eight‐coordinate Rb atoms are located between chains connected by a c translation. In the structure of Cs2Mo2O7, all atoms are in general positions. The MoO6 octahedra share opposite corners to form separate infinite chains running along the c axis and strengthened by bridging MoO4 tetrahedra. The same Mo–O polyhedral chain occurs in the structure of Na2Mo2O7. Eight‐ to eleven‐coordinate Cs atoms fill the space between the chains. The atomic arrangement of caesium dimolybdate has an orthorhombic pseudosymmetry that suggests a possible phase transition P21/c→Pbca at elevated temperatures. 相似文献
18.
Udo Beckmann Sally Brooker 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(11):o653-o655
The structure of the cocrystallized 1:1 adduct of (S,S)‐4‐amino‐3,5‐bis(1‐hydroxyethyl)‐1,2,4‐triazole and (S,S)‐1,2‐bis(2‐hydroxypropionyl)hydrazine, C6H12N4O2·C6H12N2O4, has tetragonal symmetry. All eight O‐ and N‐bound H atoms are involved in intermolecular hydrogen bonds, resulting in infinite zigzag chains of the triazole molecules, with the hydrazine molecules filling the gaps between the chains and completing a three‐dimensional hydrogen‐bonded array. 相似文献
19.
Heinrich Billetter Frauke Hohn Ingo Pantenburg Uwe Ruschewitz 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(4):m130-m131
In the title compound, catena‐poly[[[triaquacopper(II)]‐μ‐acetylenedicarboxylato‐κ2O:O′′] hydrate], {[Cu(C4O4)(H2O)3]·H2O}n, the CuII ion is coordinated by two monodentate carboxylate groups in trans positions and three water molecules, thus forming a fivefold coordination polyhedron that can be described as a distorted square pyramid. All atoms are located on general sites. The polyhedra are connected by bifunctional acetylenedicarboxylate ligands, to form almost linear chains parallel to [001]. Hydrogen bonds involving the non‐coordinated water molecule connect these chains to form a three‐dimensional framework. 相似文献
20.
Jin‐Yu Sun Zhen Zhao Yong‐Chao Ma Miao‐Li Zhu Xiang‐Dong Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(1):m4-m6
The crystal structure of the title compound, μ‐2‐hydroxybutanedioato‐1κ2O4,O4′:2κ3O1,O2,O4‐nitrato‐2κO‐tris(1,10‐phenanthroline)‐1κ4N,N′;2κ2N,N′‐dicopper(II) nitrate tetrahydrate, [Cu2(C4H3O5)(NO3)(C12H8N2)3](NO3)·4H2O, contains an unsymmetrical dinuclear copper complex with Cu(phen)2 and Cu(phen)(NO3) moieties (phen is 1,10‐phenanthroline) bridged by a malate (2‐hydroxybutanedioate) ligand, which acts as a double‐bridging and tetradentate ligand. As a result of this double‐bridging action, especially the direct coordination of the O atom of one carboxylate group of malate to the two Cu atoms, the Cu⋯Cu distance is only 4.199 (1) Å and the two phen planes are roughly parallel [the shortest interplanar distance is 3.28 (1) Å], exhibiting an obvious intramolecular π–π stacking interaction. 相似文献