共查询到20条相似文献,搜索用时 15 毫秒
1.
Fei Gao Bian‐Hong Meng Yi‐Bin Wei 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(7):m360-m362
The crystal structure of the title compound, [Mg(H2O)6]0.5[Mg2(C16H14ClN2O9)(H2O)4]·10H2O, shows that this binuclear complex consists of two Mg centres in distorted octahedral geometry, joined by an oxo bridge which is a derivative of the deprotoned hydroxy group of the phenolate in the ligand molecule. In the anion, the coordination sphere of each MgII ion is completed by two carboxylates, a tertiary N atom and two water molecules. The inner coordination spheres for the MgII ions are very similar, both in ligand sets and in geometry. Each unit of the binuclear complex has one negative charge neutralized by a neighbouring hydrated cation, [Mg(H2O)6]2+, in which the Mg atom lies on an inversion centre. In each cell, there are 34 water molecules and most of them participate in the formation of hydrogen bonds, which contribute greatly to the stability of the whole structure. 相似文献
2.
Ahmet Karadag Ahmet Bulut Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(8):m402-m404
The crystal structure of the title compound, [Ni(NCS)2(C4H12N2O)2], has two crystallographically independent half‐molecules in the asymmetric unit, with each Ni atom residing on a centre of symmetry. The two molecules exhibit similar coordination geometry but display differences with regard to other structural features. Each NiII centre is octahedrally coordinated by two mutually trans chelating hydroxyethylethylenediamine ligands and two mutually trans isothiocyanate ions. The two independent molecules form chains through different types of non‐covalent interactions. In the case of one of the molecules, only NCS and free OH groups participate in hydrogen bonding, while in the chain based on the second molecule, the NCS, NH, NH2 and free OH groups are involved in intermolecular hydrogen bonding. The two chains interact with one another through hydrogen bonding, forming planar sheets. The third packing direction is mediated only by van der Waals interactions. 相似文献
3.
Cedric Dielemann Dominique Matt Peter G. Jones Holger Thnnessen 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(5):o247-o249
The title compound, 25,26:27,28‐bis(methylenedioxy)pentacyclo[19.3.1.13,7.19,13.115,19]octacosa‐1(25)3,5,7(28),9,11,13(27),15,17,19(26),21,23‐dodecaene dichloromethane solvate, C30H24O4·CH2Cl2, possesses crystallographic twofold symmetry in both components. The calixarene shows a pinched cone conformation with an elliptical cavity, in which the guest dichloromethane solvent molecule is accommodated. The contact distance between guest and host (H⋯ring centroid = 2.44 Å) is extremely short. 相似文献
4.
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
5.
James Chapman Nigel L. Pickett Gabriel Kolawole Majid Motevalli Paul O'Brien 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(11):e501-e502
The title copper complex, [Cu(dl ‐DAP)2(H2O)2]·2H2O or [Cu(C3H7N2O2)2(H2O)2]·2H2O, prepared from the non‐protein amino acid dl ‐2,3‐diaminopropionic acid (dl ‐HDAP), has a center of symmetry and a distorted octahedral coordination, with four N atoms in equatorial positions and two water molecules in apical sites. The water molecule of crystallization is hydrogen bonded to the deprotonated carboxylate group of the ligand. 相似文献
6.
Brendan F. Abrahams Bernard F. Hoskins Timothy A. Hudson Richard Robson 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(4):e126-e127
Reaction of pyridoin with nickel nitrate in methanol in air gives crystals of two forms of the title compound, [Ni(C12H9N2O3)2]; a triclinic form with the Ni atom on an inversion centre and a monoclinic form with one molecule in a general position in the asymmetric unit. Both forms show an octahedral nickel centre coordinated by two facial tridentate ligands with their O‐atom donors trans. 相似文献
7.
Bi‐Quan Su Liang Xian Hai‐Bin Song Li Sheng 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(12):m661-m662
The title copper(I) complex, [CuCl(C11H14N2O3S)2], was synthesized by the redox reaction of cupric chloride with the corresponding thiourea derivative as reducing agent. The CuI coordination environment is trigonal planar, involving two S atoms and one Cl atom. The presence of intramolecular hydrogen bonds leads to the formation of a cis conformation and promotes the stability of the complex. 相似文献
8.
Olof Kristiansson Patric Lindqvist‐Reis 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(2):163-164
The title compound, [Y(C2H6OS)2(H2O)6]Cl3, contains the cation [Y(H2O)6{(CH3)2SO}2]3+ with a distorted square antiprismatic geometry of the eight coordinated O atoms. The six water molecules are coordinated with an average Y—O distance of 2.38 (2) Å, ranging from 2.360 (3) to 2.404 (3) Å. Each water molecule forms two hydrogen bonds to the chloride anions with O—Cl distances ranging from 3.068 (4) to 3.422 (4) Å. The two dimethyl sulfoxide ligands, situated in the cis position with the O—Y—O angle equal to 83.22 (11)°, have Y—O distances of 2.269 (3) and 2.278 (3) Å. 相似文献
9.
Nigel T. Lucas Clem E. Powell Mark G. Humphrey 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(9):e392-e393
In the cation of the title complex, cis,cis,cis‐[Ru(η2‐O2CMe)(dppe)2]PF6·2MeOH [dppe is 1,2‐bis(diphenylphosphino)ethane, C26H24P2], the Ru atom is in a pseudo‐octahedral coordination environment with two chelating dppe ligands and one chelating acetate ligand. Intra‐phosphine and intra‐acetate bond lengths and angles are unexceptional. Deviations from idealized octahedral coordination angles at ruthenium [O—Ru—O 59.43 (8)° and P—Ru—P 103.19 (2)°] presumably derive from constraints imposed by the chelate rings. The Ru—P distances for the mutually trans P‐donor atoms [2.3785 (6) Å] are significantly longer than those for the Ru—P linkages trans to the acetate ligand [2.3074 (6) Å]. The Ru1, C1 and C2 atoms lie on a twofold axis, and atom P3 of the anion lies on an inversion centre. 相似文献
10.
Fred B. Stocker Doyle Britton 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(7):798-800
Gold(I) cyanide forms complexes with imidazolidine‐2‐thione (etu) and dimethylthiourea (dmtu) with the formula [Au2(CN)2L2], i.e. the title complexes dicyano‐1κC,2κC‐bis(imidazolidine‐2‐thione)‐1κS,2κS‐digold(I)(Au—Au), [Au2(CN)2(C3H6N2S)2], and dicyano‐1κ2C‐bis(N,N′‐dimethylthiourea)‐2κ2S‐digold(I)(Au—Au), [Au2(CN)2(C3H8N2S)2]. In the etu complex, two approximately linear (etu)AuCN groups are held together by a weak homopolar Au—Au bond [3.117 (1) Å], with a torsion angle of 61 (3)° between the two groups. In the dmtu complex, an approximately linear Au(dmtu)2 group is bound to an approximately linear Au(CN)2 group by a weak heteropolar Au—Au bond [3.091 (1) Å], with a torsion angle of 83 (5)° between the two groups. 相似文献
11.
Leji Latheef E. Manoj M. R. Prathapachandra Kurup 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(1):o16-o18
The title compound, C14H19N3OS, is in the thioketo form, with the thione S and hydrazine N atoms cis with respect to each other so that the S atom is involved in inter‐ and intramolecular hydrogen bonds simultaneously. Intermolecular C—H⋯S and C—H⋯O hydrogen bonds result in one‐dimensional polymeric chains of molecules along the a axis. A weak C—H⋯π ring interaction binds the polymeric chains together. 相似文献
12.
Gavin Blewett Catharine Esterhuysen Martin W. Bredenkamp Klaus R. Koch 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(12):o862-o864
The title compound, C14H16N2O4S2, is the first reported X‐ray crystallographic structure determination of a bipodal O‐alkyl N‐benzoylthiocarbamate. This compound crystallizes in a cis‐S,O orientation (Z,Z′ configuration), with the two S/O moieties anti relative to one another, as indicated by the twofold rotation axis located at the center of the benzene ring. 相似文献
13.
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
14.
Ricardo Baggio Bruce Foxman Maria Teresa Garland Mireille Perec Wen Shang 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(11):e505-e506
The title compound, [Cu(O2CCH=CHCH3)2(C5H5N)2(H2O)], crystallizes as a monomer, with the copper ion in a pentacoordinated square‐pyramidal environment, bisected by a twofold axis passing through the metal atom and the apex. The molecules organise in chains connected by hydrogen bonds running along the unique b axis. 相似文献
15.
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
16.
Gary L. Seamans Jerry L. Walsh Mariusz Krawiec William T. Pennington 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(7):m268-m270
The title compound, [Ru(C13H11N4S)2(C15H8N2)2], has C2 symmetry, with bidentate 2,2′‐bipyridyl ligands dictating a cis geometry around the RuII center. The monodentate S‐bonded dithizone ligands are almost planar, except for one of the phenyl rings, which is twisted by 34.2 (4)° from the N/N/C(S)/N/N plane. The Ru—S bond length is 2.4140 (13) Å, and the Ru—N bond lengths are 2.048 (4) and 2.074 (4) Å. 相似文献
17.
Seik Weng Ng A. Aziz Yang Farina Abdul Hamid Othman Ibrahim Baba K. Sivakumar Hoong‐Kun Fun 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(3):e84-e85
The title compound, [Sn(CH3)2(C5H10NO2S2)2], has crystallographic mirror symmetry (C—Sn—C on mirror plane) and the coordination polyhedron around the Sn atom is a tetrahedron [C—Sn—C 139.3 (2)° and S—Sn—S 82.3 (1)°] distorted towards a skew‐trapezoidal bipyramid owing to an intramolecular Sn?S contact [3.0427 (6) Å]. The molecules are linked into a linear chain by intermolecular O—H?O hydrogen bonds [O?O 2.646 (3) Å]. 相似文献
18.
Eleonora Freire Sergio Baggio Alvaro Mombru Ricardo Baggio 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(5):541-543
The structure of the title compound, [Ni(C10H8N2)3](S2O3)·7H2O, consists of monomeric Ni(bipy)32+ cations embedded in an anionic network made up of S2O32? ions and hydration water molecules. The structure presents the unusual feature of two neighbouring thiosulfates approaching linearly head‐to‐head with an unusually short S?S contact distance of 3.25 Å. 相似文献
19.
Guang‐Fei Liu Lin‐Lin Li Yong Zhang Jian‐Ping Lang Seik Weng Ng 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(1):m1-m3
The title compound, [Cu(ClO4)2(C4H9N3O2)2][Cu(C4H9N3O2)2(CH4O)2](ClO4)2·2CH3OH, comprises two independent CuII species lying on different inversion sites. In the Cu complexes, a distorted octahedral geometry arises (from basic square‐planar N4 coordination) from the weak coordination of two perchlorate ions (as Cu—O) in one species and two methanol molecules in the other (also as Cu—O). Interactions between the O atoms of the perchlorate anions or methanol groups and the imide or amine NH groups afford an extensive intermolecular hydrogen‐bonding network. 相似文献
20.
Yang Peng Yi‐Zhi Li Song‐Song Bao Li‐Min Zheng 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(7):m302-m304
In the title compound, [Co(C2H8N2)3]2[Ru2(C2H4O7P2)2Cl2]Cl·3H2O, the building unit contains two crystallographically independent dinuclear [Ru2(hedp)2Cl2]5− anions, where hedp [viz. (1‐hydroxyethylidene)diphosphonate] serves as a bis‐chelating bridging ligand, two types of [Co(en)3]3+ cations, one uncoordinated Cl− anion and five water molecules of crystallization. The [Ru2(hedp)2Cl2]5− anions are connected to one another, forming one‐dimensional chains along the a axis. The [Co(en)3]3+ cations are located between these chains and lie across inversion centres. An extensive series of hydrogen bonds lead to the formation of a three‐dimensional supramolecular network structure, with channels generated along the [100] direction. The uncoordinated water molecules and Cl− anions reside in these channels. 相似文献