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1.
Jan Fbry Michal Duek Karla Fejfarov Radmila Krupkov Pemysl Vank Ivan Nmec 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(9):m426-m430
A phase transition was found to occur at ∼153 K in the title compound, (C8H20N)2[PdCl6]. The structures of the two phases are reported at 292 and 130 K. The low‐temperature phase is twinned. The phase transition is accompanied by a minor displacement of the ions. There are C—H⋯Cl interactions as short as ∼2.80 Å, indicating the existence of hydrogen bonds, and this was confirmed by vibrational spectroscopy. The [Pd2Cl6]2− anion occupies sites of mmm and 2/m symmetry in the room‐temperature and low‐temperature phases, respectively. 相似文献
2.
Adnan S. Abu‐Surrah Martti Klinga Timo Repo Markku Leskel Tony Debaerdemaeker Bernhard Rieger 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(2):e44-e45
The title compound was formed upon slow evaporation of a solution of the solvated dicationic complex bis(acetonitrile)bis[1,2‐bis(diphenyl‐phosphino)ethane]palladium(II) bis(tetrafluoroborate) in deuterated chloroform. The dinucleur palladium complex forms triclinic crystals and there is an inversion center between the Pd atoms. Compared to the corresponding monomeric compound, the Cl—Pd—Cl angles decrease upon briding from 94.19 (7) to 86.96 (4)°. 相似文献
3.
Glen B. Deacon Pauline Pearson Brian W. Skelton Leone Spiccia Allan H. White 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(12):m537-m539
The syntheses and crystal structure determinations of a pair of `sawhorse' dimers are reported, viz. [Ru2(C6H5CO2)2(C5H5N)2(CO)4] [a new polymorph, cf. Kepert, Deacon, Spiccia, Fallon, Skelton & White (2000). J. Chem. Soc. Dalton Trans. pp. 2867–2874] and [Ru2(CF3CO2)2(C5H5N)2(CO)4]. The Ru⋯Ru distances are 2.6724 (2) and 2.7122 (5) Å, respectively. 相似文献
4.
Anna M. M. Meij Stefanus Otto Andreas Roodt 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(9):m352-m354
The crystal structure of the title compound, trans‐[Pd(NCS)2(C6H13N3P)2](NCS)2, is one of the few palladium(II) complexes containing two protonated water‐soluble 1,3,5‐triaza‐7‐phosphaadamantane (PTA) ligands reported to date. The compound displays a distorted square‐planar geometry, with the Pd atom on an inversion centre and with the S atoms of the thiocyanate counter‐ions occupying the axial positions above and below the equatorial plane described by the phosphine and thiocyanate ligands. Geometric parameters for the formal coordination polyhedron include a Pd—P distance of 2.2940 (8) Å, a Pd—S distance of 2.3509 (8) Å and a P—Pd—S angle of 89.45 (3)°. The effective cone angle for the PTA ligands was calculated as 114.5°. 相似文献
5.
M. Ramos Silva A. Matos Beja J. A. Paixo L. Alte da Veiga J. Martin‐Gil 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(5):542-545
The title compound, [Fe3(C5H11NO2)6O(H2O)3](MnCl4)2Cl3·6H2O, contains a triiron core linked by a μ3‐bridging oxide ion. Each of the iron(III) ions has a distorted octahedral environment, being coordinated, in addition to the oxide ion, by four neutral betaine molecules and one water molecule. The N‐alkylated α‐amino acid betaine is present in the dipolar zwitterionic form and chelates pairs of Fe atoms at the vertices of the triangular [Fe3O]7+ ionic core. The Fe complex has a crystallographically imposed D3 symmetry. The water molecules fully exhaust their potential as hydrogen donors, forming a two‐dimensional hydrogen‐bond network in planes parallel to (001). 相似文献
6.
Chang‐Kun Xia Quan‐Zheng Zhang Shu‐Mei Chen Xiang He Can‐Zhong Lu 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(4):m203-m205
The title compound, (C12H11N3)2[Cd2Cl8], consists of two discrete 2‐(3‐pyridinio)benzimidazolium cations and one [Cd2Cl8]4− anion. The dimeric [Cd2Cl8]4− anion lies about an inversion centre and consists of two distorted [CdCl5] trigonal bipyramids which share a common edge. The two Cd atoms are each coordinated by two μ‐Cl atoms and three terminal Cl atoms, with a Cd·Cd separation of 3.9853 (6) Å. The packing displays two‐dimensional hydrogen‐bonded sheets, which are further linked by C—H·Cl contacts and π–π stacking interactions to yield a three‐dimensional network. 相似文献
7.
Fen Sun Yan‐Tuan Li Zhi‐Yong Wu Da‐Qi Wang Jian‐Min Dou 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(2):m60-m62
The structure of the title compound, (C5H12N)4[V10O26(CH3O)2], reveals the presence of four protonated piperidinium cations and a [{V10O26}(OCH3)2]4− polyanion having an embedded centre of inversion. The compound is distinguished by presenting, in contrast with other anionic decavanadates, two methoxy groups bridging the outermost V atoms, and it becomes the first example of this type among reported decavanadates. 相似文献
8.
Ilia A. Guzei Curtis J. Czerwinski 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(12):m615-m617
The title compounds, [Cr(C12H10)(CO)3] and [Cr2(C12H10)(CO)6], serve as a fundamental standard of comparison for other mono‐ and polysubstituted (η6‐biphenyl)tricarbonylchromium compounds. (η6‐Biphenyl)tricarbonylchromium has a typical piano‐stool coordination about the Cr center, and the dihedral angle between the planes of the phenyl rings is 23.55 (5)°. The corresponding angle in μ‐(η6:η6)‐biphenyl‐bis(tricarbonylchromium) is 0° because the molecule occupies a crystallographic inversion center; the Cr atoms reside on opposite sides of the biphenyl ligand. Density functional theory and natural bonding orbital theory analyses were used to scrutinize the geometry of these and closely related compounds to explain important structural features. 相似文献
9.
Anna M. Trzeciak Iweta Pryjomska‐Ray Andrzej Gniewek Jzef J. Zikowski Tadeusz Lis 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(10):m491-m494
The title compound, [Pd2(C12H10O3P)2Cl2(C12H11O3P)2], consists of a dinuclear μ‐chloro‐bridged palladium unit with two diphenoxyphosphinite groups per Pd atom, linked together by a hydrogen bond. The asymmetric unit contains one half of the molecule, with the other half generated by an inversion centre. The geometry around the P atoms may be described as distorted tetrahedral. Adjacent molecules of the complex are linked by weak C—H⋯O and C—H⋯Cl hydrogen bonds. The structure is additionally stabilized by π–π stacking interactions between the aryl rings. These interactions form a herring‐bone pattern in the crystal structure. 相似文献
10.
Takashiro Akitsu Yuiri Takeuchi Yasuaki Einaga 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(11):o801-o802
The title compound, (RS)‐3,5‐dichloro‐2‐{[(1‐phenylethyl)imino]methyl}phenol, C15H13Cl2NO, was synthesized from racemic 1‐phenylethylamine and 3,5‐dichlorosalicylaldehyde. The π‐conjugate system around the imine group is essentially planar in the phenol–imine tautomer. Intramolecular O⋯N hydrogen‐bond and intermolecular C—H⋯π interactions are present in the crystal structure. 相似文献
11.
Gerardo Medina Laura Gasque Sylvain Berns 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(7):766-768
The title compound, [Cu(C2H3O3)(C14H12N2)(H2O)]NO3, is the first example of a mixed copper glycolate compound with a diimine ligand. The copper(II) compound lies in a slightly distorted square‐pyramidal coordination environment with one water molecule coordinated in the apical position. The glycolate ligand binds to the Cu atom as a chelate through a carboxylate and the α‐OH O atom which, together with the N atoms of the substituted phenanthroline, constitute the base of the pyramid. 相似文献
12.
Shu‐Mei Chen Can‐Zhong Lu Ya‐Qin Yu Quan‐Zheng Zhang Xiang He 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(11):m549-m550
The title compound, [NaLaMo8O26(C3H7NO)7]n, contains infinite chains of [Mo8O26]4− units supporting dimethylformamide‐coordinated LaIII cations and linked by Na+ cations. The lanthanum center adopts a nine‐coordinate geometry and the Na atom is sandwiched between two β‐[Mo8O26]4− units. 相似文献
13.
Masataka Ohashi Kazumasa Kajiyama Hidetaka Yuge Takeshi Ken Miyamoto 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(2):e38-e39
In the title compound, (NH4)[IrCl2(C4H7N2O2)2], (I), the Ir atom is octahedrally coordinated by two trans Cl? and two dimethylglyoximate chelate ligands in the equatorial plane. A two‐dimensional hydrogen‐bond network between ammonium cations NH4+ and anionic [IrCl2(C4H7N2O2)2]? complexes is extended along the bc plane. 相似文献
14.
Botjan Genorio Joe Kobe Gerald Giester Ivan Leban 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(4):o221-o224
The two title ethoxycarbonylmethoxy derivatives of calix[4]arene, namely diethyl 2,4‐dihydroxycalix[4]arene‐1,3‐diyldi(oxyacetate), C36H36O8, (I), and tetraethyl calix[4]arene‐1,2,3,4‐tetrayltetra(oxyacetate), C44H48O12, (II), form two different conformations, viz. a cone in (I), where intramolecular hydrogen bonds are formed through OH groups in a partially substituted calix[4]arene, and a 1,3‐alternate form of a completely substituted calix[4]arene in (II). A unique three‐dimensional array of molecules exists in (II), with the channels extended along the entire crystal. 相似文献
15.
Xiaoming Liu Colin A. Kilner Malcolm A. Halcrow 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(3):m100-m102
The title compound, [Cu4Cl6O(C12H14N2)4], is a new example of the well known [Cu4(μ4‐O)(μ‐X)6L4] class of complex (X− is Cl−, Br− or I−, and L is a monodentate ligand). The molecule has crystallographic C2 symmetry, with two Cl− ions on each edge of a Cu4 tetrahedron. Two of these, on opposite edges of the tetrahedron, accept intramolecular hydrogen bonds from two of the pyrazole N—H donors. 相似文献
16.
Wen‐Tao Huang Jem‐Mau Lo Hsueh‐Hua Yao Fen‐Ling Liao 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(5):e172-e173
The title compound, [Re2O3(C19H20N2O2)2], is a hexacoordinate complex containing an [Re2O3]4+ core with a linear O=Re—O—Re=O bridge. The distorted octahedral coordination of the ReV atom is achieved by an N2O2 donor set from the tetradentate imine–phenol ligand. The overall charge of the compound is neutral due to deprotonation of the phenol groups, and the terminating and bridging O atoms. The Re=O and Re—O bond distances of the [Re2O3]4+ core are 1.699 (4) and 1.911 (1) Å, respectively. The Re—O and Re—N bond distances of the equatorial plane are in the ranges 2.024 (4)–2.013 (4) and 2.128 (5)–2.120 (5) Å, respectively. 相似文献
17.
Claude Villiers Michel Ephritikhine Pierre Thury 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(2):m64-m66
In the title compound, [SmTi2Cl7O(C4H8O)6], the metal ions are linked by a central μ3‐oxo ion and by three μ2‐chloro ions, giving a planar moiety containing a binary crystallographic axis. The coordination spheres are completed by terminal chloro ligands and tetrahydrofuran molecules, with resulting pentagonal bipyramidal and octahedral environments for the Sm and Ti atoms, respectively. 相似文献
18.
C. A. Bolos P. C. Christidis 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(1):m29-m30
The title compound, [Cu4Cl6O(C4H7NS)4], was obtained by the reaction of CuCl2·2H2O with 2‐methyl‐2‐thiazoline in methanol. The complex has twofold crystallographic symmetry and contains a tetrahedron of four CuII atoms coordinating a central μ4‐O atom, with the six edges of the tetrahedron bridged by Cl atoms. Distance ranges are Cu—O 1.917 (4)–1.920 (4) and Cu—Cl 2.370 (2)–2.445 (2) Å. 相似文献
19.
Kunihisa Sugimoto Takayoshi Kuroda‐Sowa Sheng‐Gang Yan Masahiko Maekawa Mugumu Munakata 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(4):414-415
The title triangular tripalladium cluster, [Pd3Cl5(C18H15P)3]·C3H6O, (I), has a trigonal‐bipyramidal framework of Pd3(μ3‐Cl)2, with the two Cl atoms in apical positions. Each Pd atom in the framework has two additional coordination sites to establish square‐planar cis‐PdL2(μ3‐Cl)2 geometry. Three P atoms are located on the same side of the plane defined by the Pd3 triangle, which leads to a pseudo‐C3v symmetry for the core framework of Pd3(μ3‐Cl)2P3Cl3. The average Pd—Cl distance trans to PPh3 is 2.473 (8) Å, which is significantly longer than the average Pd—Cl distance of 2.294 (4) Å for those trans to terminal Cl, due to the strong trans effect of a P atom compared with a Cl atom. Compound (I) has 49 valence electrons and shows a rhombic electron‐spin resonance signal, indicating an S = ½ ground state. 相似文献
20.
Roberto Centore Angela Tuzi Dario Liguori 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(6):m241-m242
The structure of the salt of the di‐μ‐chloro‐bis[tetrachlorozirconate(IV)] anion and the N,N′‐isopropyl‐N‐(trimethylsilyl)benzamidinium cation, (C16H29N2Si)2[Zr2Cl10]·2CH2Cl2, is reported. The anion lies about an inversion centre and shows a substantially octahedral coordination around Zr, while the structure of the cation is unequivocally assigned as that of a benzamidinium ion. 相似文献