共查询到20条相似文献,搜索用时 31 毫秒
1.
Yun Guo Miao Zhang Liang Shen Ying-Ying Jin Zhi-Min Jin 《Crystallography Reports》2010,55(7):1194-1197
The reaction of 2,6-dimethylpyridine with SbCl3 and HCl affords the title compound, the structure of which is ascertained by X-ray diffraction. The unit cell consists of
one bridged Sb2Cl82− anion and two 2,6-dimethylpyridinium cations. The trivalent antimony ion is bonded not only directly to chlorine anions,
but also is coordinated with chlorine anions by secondary bonds. In the crystal, there exists infinite coordinated chains
of [Sb2Cl8]
n
2n− anions running along the a axis, which link 2,6-dimethylpyridinium cations by N-H…Cl hydrogen bonds. 相似文献
2.
Yong Zhang Jian Zhou Ai-Bin Tang Guo-Qing Bian Jie Dai 《Journal of chemical crystallography》2010,40(6):496-500
Abstract
Two new thiostannates [M(tepa)]2(μ-Sn2S6) (tepa = tetraethylenepentamine, M = Fe2+ 1 and Co2+ 2) were prepared by solvothermal method. Compounds 1 and 2 are isostructural. Both the compounds crystallize in the tetragonal system, space group I41/a (no. 88) with the crystal parameters of 1: a = 25.683(2) ?, b = 25.683(2) ?, c = 9.9860(9) ?, V = 6,586.7(11) ?3, Z = 8, and 2: a = 25.742(3) ?, b = 25.742(3) ?, c = 9.8977(12) ?, V = 6,558.5(14) ?3, Z = 8. The Sn2S6 4− anion acts as a bidentate bridging ligand connecting two transition metal complex cations by trans terminal S atoms to form neutral centrosymmetric [M(tepa)]2(μ-Sn2S6) moieties. 相似文献3.
N. V. Somov F. F. Chausov R. M. Zakirova M. A. Shumilova V. A. Aleksandrov V. G. Petrov 《Crystallography Reports》2017,62(5):734-738
Aquanitrilotris(methylenephosphonato)dirubidium is a 3D coordination polymer with a layer structure. Space group \(P\bar 1\), Z = 2; a = 8.0380(3) Å, b = 9.0522(4) Å, and c = 10.7837(4) Å; α = 113.252(4)°, β = 105.391(3)°, and γ = 96.182(3)°. Rb atoms populate two symmetrically inequivalent positions with c.n. = 8 and 10; significant difference in O–Rb–O angles in the coordination polyhedra is indicative of the ionic type of Rb–O bonds. In the crystal packing, molecules are connected by not only coordination bonds but hydrogen bonds as well. 相似文献
4.
Domenica Marabello Federica Bertolotti Giuliana Gervasio 《Journal of chemical crystallography》2010,40(1):72-75
Abstract
The structure of the complex Os3(μ-H)(CO)9(μ3, η2-C2H) has been determined using X-ray data collected at low temperature (100 K); all hydrogen atoms have been located. The asymmetric unit is formed by two molecules joined through hydrogen bonds involving the hydrogen atoms of C2H moiety and the oxygen atoms of carbonyl groups. The complex crystallizes in the monoclinic space group P21/c with a = 12.94040(2), b = 15.4705(2), c = 16.0164(2) ?, β = 106.0860(10)°, and V = 3,080.85(7) ?3, Z = 8. A molecule is formed by a triangular Os3 cluster, with metal atoms bearing terminal CO groups. The acetylenic residual is formally π-bonded to two Os atoms in a perpendicular mode and σ-linked to the third Os atom. A bridging hydride atom completes the coordination. 相似文献5.
N. S. Kozlova O. A. Busanov E. V. Zabelina A. P. Kozlova V. M. Kasimova 《Crystallography Reports》2016,61(3):474-478
Crystals of cerium-doped gadolinium–gallium–aluminum garnet have been grown by the Czochralski method. The transmission and reflection spectra of these crystals in the wavelength range of 250–800 nm have been obtained by optical spectroscopy. Refractive indices are calculated based on the measured Brewster angles, the experimental results are approximated using the Cauchy equation, and a dispersion dependence is obtained. 相似文献
6.
Abstract
The six-membered heterocycle [Me2AlSb(t-Bu)2]3 was reacted with the strong Lewis-base 4-dimethylaminopyridine (dmap), yielding the first completely alkyl-substituted monomeric complex dmap–Al(Me2)Sb(t-Bu)2 1. 1 was characterized by NMR spectroscopy and single crystal X-ray diffraction. 1 is monoclinic, space group P2 1 /n with a = 9.9004(2) ?, b = 16.8166(3) ?, c = 13.8400(3) ?, β = 100.746(1)° and Z = 4. 相似文献7.
Ying Liu Bao Zhang Jian-Min Dou Da-Qi Wang Da-Cheng Li Lei Zhou 《Journal of chemical crystallography》2007,37(11):717-720
Abstract One new mononuclear manganese complex of [Mn(4,4′-bip)2(OH2)4](DBA) · 4H2O (1) (4,4′-bipyridine, 4,4′-bip; H2DBA, benzene-1,3-dicarboxylic acid) has been obtained from the hydrothermal reaction of MnCl2 · 4H2O, 4,4′-bipyridine and H2DBA in the solvent of H2O at 140 °C for 3 days, characterized by X-ray analysis, spectroscopic methods, and thermal analysis. Packing diagram shows
that the three-dimensional network was formed via hydrogen bonds and strong π–π interactions.
Graphical abstract
One Novel Three-dimensional Network Constructed from [Mn(4,4′-bip)
2
(OH
2
)
4
]
2+
Cations and DBA
2−
Anions via Hydrogen-bonding and π–π Interactions
Ying Liu, Bao Zhang, Jian-min Dou, Da-qi Wang, Da-cheng Li, Lei Zhou
One new mononuclear manganese complex of [Mn(4,4’-bip)2(OH2)4](DBA) · 4H2O (1) (4,4’-bipyridine, 4,4’-bip; H2DBA, benzene-1, 3-dicarboxylic acid) has been obtained and haracterized by X-ray analysis, spectroscopic methods, and thermal
analysis. Packing diagram shows that the three-dimensional network was formed via hydrogen bonds and strong π-π interactions.
相似文献
8.
Thomas?W.?Vertrees Gwendolyn?Hoben Andrew?N.?Kobylivker Christopher?L.?Edwards Simon?G.?Bott Andrew?R.?Barron
The molecular structure of [(tBu)2Al(-OC6H5-2-Me)]2 has been determined. Both the ortho-tolyl methyl groups are oriented towards Al(2). The intramolecular steric interaction between the ortho-methyl groups and the tert-butyl ligands results in the geometry about the bridging oxygen being significantly distorted while the geometries about the aluminum centers show a distortion from tetrahedral that is less than the sterically less hindered [(tBu)2Al(-OPh)]2. Crystal data: group C2/c, a = 13.733(3) Å, b = 15.135(3) Å, c = 15.420(3) Å, = 104.24(3), V = 3106(1) Å3, Z = 4, R = 0. 0612, wR2 = 0.1787. 相似文献
9.
A. A. Kaminskii A. F. Konstantinova V. P. Orekhova A. V. Butashin R. F. Klevtsova A. A. Pavlyuk 《Crystallography Reports》2001,46(4):665-672
Monoclinic α-KRE(WO4)2 crystals are grown. Their structure is described in two crystallographic settings. The principal refractive indices are determined and the coefficients and characteristic wavelengths are used for calculating refractive indices by the Selmeyer formulas. The data on the anisotropic parametric Raman generation in these crystals under the picosecond pumping are discussed. 相似文献
10.
Saeed Ahmad Muhammad Nawaz Tahir Hafza Mariyam Javaid Muhammad Monim-ul-Mehboob Muhammad Ashraf Shaheen Rashid Mahmood 《Journal of chemical crystallography》2012,42(4):401-404
Abstract
A cyanido-bridged Cu(II)–Ag(I) bimetallic complex, [Cu(Imidazole)4{Ag(CN)2}2] has been prepared and structurally characterized. The compound crystallizes in the orthorhombic space group Pmna. The crystal structure of the complex consists of trinuclear molecules made up of one [Cu(Imidazole)4]+2 and two [Ag(CN)2]− units. The trinuclear molecules are interlinked to each other through N–H–N and C–H–N hydrogen bonds. The Cu(II) ions are located on mirrors and assume distorted octahedral geometry with the basal plane consisting of four imidazole N-atoms. 相似文献11.
Abstract
The low temperature crystal structure of the complex, Cr(urea)4(H2O)2·3NO3 (1), displays intriguing pseudosymmetry that complicates the structure determination. 1 crystallises in the centrosymmetric monoclinic space group P21/c with Z = 8 and Z′ = 2; a = 18.3338(4) ?, b = 16.5472(4) ?, c = 13.9252(3) ? and β = 106.3260(10)°, V = 4054.19(16) ?3. The two symmetry independent [Cr(urea)4(H2O)2]3+ ions in the asymmetric unit both feature coordinated urea (O=C(NH2)2) and lie on general positions. A further six independent nitrate anions complete the structure. The unit cell is primitive but the two Cr3+ ions are related by a pseudo translation of ?, ?, 0. The deviation from a truly C-centred cell is clear from an examination of geometry of the urea ligands and the hydrogen bonds which they form. The identification of the space group in this case is described and methods for quantifying the degree of deviation from a C-centred cell discussed. 相似文献12.
D. Yu. Pushcharovskii E. V. Suleimanov M. Pasero S. Merlino A. V. Barinova E. V. Alekseev 《Crystallography Reports》2003,48(2):212-215
The crystal structure of the compound Sr(AsUO6)2 · 8H2O is determined by X-ray diffraction analysis (monoclinic system, sp. gr. Pc, unit-cell parameters a = 7.154(1) Å, b = 7.101(1) Å, c = 18.901(7) Å, β = 92.67(2)°, Z = 2). The structure is built by (001)-parallel [AsUO6]? layers formed by flattened square UO6 bipyramids and AsO4 tetrahedra. The neighboring layers are connected via SrO8 square antiprisms. The cavities of the polyhedral framework thus formed are occupied by H2O molecules. The displacements of the anion complexes by a half-translation with respect to one another along only one lattice period is a characteristic feature of this polymorphous modification of the uran-mica group. 相似文献
13.
O. V. Rudnitskaya E. K. Kultyshkina A. I. Stash A. A. Glukhova N. U. Venskovskiĭ 《Crystallography Reports》2008,53(4):608-612
The complex [(NH2)2CSSC(NH2)2]2[OsBr6]Br2 · 3H2O is synthesized by the reaction of K2OsBr6 with thiocarbamide in concentrated HBr and characterized using electronic absorption and IR absorption spectroscopy. Its crystal structure is determined by X-ray diffraction. The crystals are orthorhombic, a = 11.730(2) Å, b = 14.052(3) Å, c = 16.994(3) Å, space group Cmcm, and Z = 4. The [OsBr6]2? anionic complex has an octahedral structure. The Os-Br distances fall in the range 2.483–2.490 Å. The α,α′-dithiobisformamidinium cation is a product of the oxidation of thiocarbamide. The S-S and C-S distances are 2.016 and 1.784 Å, respectively. The H2O molecules, Br?ions, and NH2 groups of the cation are linked by hydrogen bonds. 相似文献
14.
Tian-hui Hu Xin Zhang Qi Wang Wan-sheng You Cui-ying Huang Yong Fang 《Journal of chemical crystallography》2011,41(1):64-68
Abstract
Two new metal complexes supported by {VO3}n n− chains, [M(dpa)V2O6] (1, M = Zn2+; 2·H2O, M = Cu2+; dpa = 2,2′-dipyridylamine), have been synthesized hydrothermally and characterized by elemental analysis, TG analysis, IR spectroscopy and single-crystal X-ray diffraction. Crystal data: [Zn(dpa)V2O6] 1, Triclinic, P-1, a = 9.663(7) ?, b = 10.617(7) ?, c = 15.114(10) ?, α = 105.678(10)°, β = 104.772(9)°, γ = 94.021(10)°, Z = 2; [Cu(dpa)V2O6]·H2O 2·H2O, Monoclinic, C2, a = 20.543(3) ?, b = 7.2460(9) ?, c = 10.4853(13) ?, β = 111.318(2)°, Z = 4. Complex 1 is constructed from sinusoidal {VO3}n n− chains with {Zn(dpa)}2+ fragments spanning the adjacent troughs and crests into an 1D ribbon-like structure. Complex 2 is built up by linking {VO3}n n− chains via pairs of symmetrical {Cu(dpa)}2+ fragments into a 2D layered structure. The Zn(II) and Cu(II) ions exhibit tetrahedral and square pyramidal coordination environments, respectively. The formation of the two isomers is attributed to the flexibility of {VO3}n n− chains and the different coordination configurations of the two metal ions. There exist significant π–π stacking and hydrogen bonding interactions in complexes 1 and 2. 相似文献15.
The crystal structure of nitrilotris(methylenephosphonato)potassium K[μ6-NH(CH2PO3)3H4]—a three-dimensional coordination polymer—was determined. The potassium atom is coordinated by seven oxygen atoms belonging to the six nearest ligand molecules, resulting in distorted monocapped octahedral coordination geometry. The complex contains the four-membered chelate ring K–O–P–O. The K–O chemical bond is predominantly ionic. Meanwhile, the bonds of the potassium atom with some oxygen atoms have a noticeable covalent component. In addition to coordination bonds, the molecules in the crystal packing are linked by hydrogen bonds. 相似文献
16.
The crystal structure of mineral bussenite, Na2Ba2Fe[TiSi2O7][CO3]O(OH)(H2O)F, found in the Khibiny massif (the Kola Peninsula) has been determined. The parameters of the triclinic unit-cell are a = 5.399(3) Å, b = 7.016(9) Å, c = 16.254(14) Å, α = 102.44(8)°, β = 93.18(6)°, γ = 90.10(7)°, sp. gr. \(P\bar 1\), R = 0.054 for 1418 reflections with |F| > 2.5σ(F). The mineral studied belongs to the family of layered titanosilicates, in which, unlike the sulfate-and phosphate-containing representatives of this family, the interlayer spaces are filled with carbonate groups. 相似文献
17.
L. B. Serezhkina A. V. Vologzhanina A. V. Marukhnov D. V. Pushkin V. N. Serezhkin 《Crystallography Reports》2009,54(5):852-857
Single crystals of the compound Na3(H3O)[UO2(SeO3)2]2 · H2O (I) have been synthesized, and their structure has been investigated using X-ray diffraction. Compound I crystallizes in the triclinic system with the unit cell parameters a = 9.543(6)Å, b = 9.602(7)Å, c = 11.742(8)Å, α = 66.693(16)°, β = 84.10(2)°, γ = 63.686(14)°, space group P \(\bar 1\), Z = 2, and R = 0.0734. The uranium-containing structural units of the crystals are [UO2(SeO3)2]2? chains, which belong to the crystal-chemical group AB 2 B 11 (A = UO 2 2+ , B 2 = SeO 3 2? , B 11 = SeO 3 2? ) of the uranyl complexes. The structures of the compounds containing the [UO2(SeO3)2]2? anionic complexes are compared. 相似文献
18.
Rachel C. Severance Ankur M. Patel Mark D. Smith Hans-Conrad zur Loye 《Journal of chemical crystallography》2012,42(3):258-262
Abstract
Two lead coordination compounds, Pb(PYTAC)2 (1), and Pb(PYTAC)2(NO3) (2), were grown as single crystals via hydrothermal synthesis (PYTAC = 2-(4-pyridyl) thiazole-4-carboxylate). Both compounds have been identified via single crystal X-ray diffraction. Coordination polymer 1 crystallizes in a triclinic space group P-1 (a = 5.5097(4) ?, b = 7.2822(5) ?, c = 11.3134(8) ?, α = 103.5580(10)°, β = 99.4330(10)°, γ = 97.1050(10)°), and forms 2-D layers parallel to the crystallographic (ac) plane. Coordination polymer 2 crystallizes in a triclinic space group P-1 (a = 9.8102(5) ?, b = 10.5972(6) ?, c = 14.8076(8) ?, α = 91.9350(10)°, β = 100.8050(10)°, γ = 103.1350(10)°), and forms an infinite 1-D chains along the a axis. 相似文献19.
L. B. Serezhkina A. V. Vologzhanina E. S. Klynin A. A. Korlyukov I. K. Moiseev V. N. Serezhkin 《Crystallography Reports》2012,57(2):252-257
The compound [UO2(NO3)2(H2O)2] · 2C12H18O was synthesized and studied by IR spectroscopy and X-ray diffraction. The structure consists of the neutral island groups
[UO2(NO3)2(H2O)2], which belong to the crystal-chemical group AB
01
2
M
1
2 (A = UO2
2+, B
01 = NO3−, M
1 = H2O) of uranyl complexes, and 1-adamantyl methyl ketone molecules. The characteristic features of the association of the complexes
[UO2(NO3)2(H2O)2] and 1-adamantyl methyl ketone molecules in the crystal structure via hydrogen bonds are considered with the use of Voronoi-Dirichlet
polyhedra. 相似文献
20.