共查询到20条相似文献,搜索用时 31 毫秒
1.
Zhong‐Lu You Hai‐Liang Zhu Wei‐Sheng Liu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(12):m620-m622
The title compound, {[Ag2(C4H4N2)3](CF3SO3)2·2H2O}n, is a polymeric pyrazine–silver(I) complex. Each AgI ion is three‐coordinated by N atoms of three different pyrazine ligands, forming a T‐shaped coordination configuration. In the crystal structure, uncoordinated water molecules are linked to trifluoromethanesulfonate anions through intermolecular O—H⋯O hydrogen bonds. There are weaker Ag⋯O interactions involving the water and sulfonate O atoms. 相似文献
2.
Hai‐Ying Wang Shyh‐Jiun Liu Ru‐Ji Wang Chan‐Cheng Su 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(12):m512-m515
The organic ligands 4‐methyl‐1H‐imidazole and 2‐ethyl‐4‐methyl‐1H‐imidazole react with Cu(CF3SO3)2·6H2O to give tetrakis(5‐methyl‐1H‐imidazole‐κN3)copper(II) bis(trifluoromethanesulfonate), [Cu(C4H6N2)4](CF3SO3)2, and aquatetrakis(2‐ethyl‐5‐methyl‐1H‐imidazole‐κN3)copper(II) bis(tri fluoromethanesulfonate), [Cu(C6H10N2)4(H2O)](CF3SO3)2. In the former, the Cu atom has an elongated octahedral coordination environment, with four imidazole rings in equatorial positions and two trifluoromethanesulfonate ions in axial positions. This conformation is similar to those in the analogous complexes tetrakis(imidazole)copper(II) trifluoromethanesulfonate and tetrakis(2‐methyl‐1H‐imidazole)copper(II) trifluoromethanesulfonate. In the second of the title compounds, the ethyl groups block the central Cu atom, and a square‐pyramidal coordination environment is formed around the Cu atom, with the substituted imidazole rings in the basal positions and a water molecule in the axial position. 相似文献
3.
M. Barboiu A. van der Lee 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(9):m366-m368
The structure of the supramolecular complex calcium–trifluoromethanesulfonate–1,3‐di‐4‐pyridylurea–methanol (1/2/2/4), Ca2+·2CF3SO3−·2C11H10N4O·4CH4O, is presented. The Ca2+ ion lies on an inversion centre and is octahedrally coordinated by four methanol molecules and two trifluoromethanesulfonate counter‐ions. The molecular packing is dominated by hydrogen‐bonded sheets in the (110) plane which contain R(32) rings; in these rings, significant π–π interactions are observed between inversion‐related 1,3‐di‐4‐pyridylurea molecules. 相似文献
4.
Madhukar Hemamalini Packianathan Thomas Muthiah Gabriele Bocelli Andrea Cantoni 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(4):o284-o286
In the title compound, C10H9N2+·C9H5INO4S−·2H2O, the 4,4′‐bipyridine molecule is protonated at one of the pyridine N atoms. These moieties self‐assemble into a supramolecular chain along the a axis through N—H⋯N hydrogen bonds. The quinolinol OH group acts as a donor with respect to a sulfonate O atom [O—H⋯O(sulfonate)] and acts as an acceptor with respect to a C—H group of ferron [C—H⋯O(hydroxy)], forming a supramolecular chain along the b axis. These two types of supramolecular chains (one type made up of bipyridine motifs and the other made up of sulfoxine motifs) interact viaπ–π stacking, generating a three‐dimensional framework. These chains are further crosslinked by C—H⋯O hydrogen bonds and O—H⋯O hydrogen bonds involving water molecules. 相似文献
5.
Huub Kooijman Anthony L. Spek Gerard A. van Albada Patrick Gamez Jan Reedijk 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(2):m51-m54
In the crystal structure of [Cu(CF3SO3)(C2N3)(C8H7N5)2]·0.5C2H6O, the CuII atom adopts a distorted octahedral geometry, with the basal plane formed by two N atoms of one dipyrimidinylamine ligand, one N atom of the second pyrimidine ligand and a nitrile N atom of the dicyanamide anion [Cu—N = 1.972 (2)–2.021 (2) Å]. The apical positions are occupied by an N atom of the second ligand [Cu—N = 2.208 (2) Å], and an O atom of the trifluoromethanesulfonate anion [Cu—O = 2.747 (2) Å] at a semi‐coordination distance. Pairs of inversion‐related N—H⋯N hydrogen bonds of the so‐called Watson–Crick type, augmented by two C—H⋯N contacts, link adjacent complexes into an infinite one‐dimensional chain running in the [101] direction. 相似文献
6.
Masood Parvez M. Saeed Arayne Najma Sultana Ahsan Zamir Siddiqi 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(7):910-912
The crystal structure of 4‐(3‐carboxy‐1‐ethyl‐6‐fluoro‐1,4‐dihydro‐4‐oxo‐7‐quinolyl)‐1‐methylpiperazinium methanesulfonate 0.10‐hydrate, C17H21FN3O3+·CH3O3S?·0.10H2O, contains pefloxacinium cations, methanesulfonate anions and a partially occupied water of solvation. The quinoline ring system in the cation is essentially planar. The anions lie parallel to each other about inversion centers. The structure is stabilized by strong hydrogen bonds involving the terminal piperazinyl‐N atom of the cation and an O atom of the anion [N?O 2.739 (2) Å], and a strong intramolecular hydrogen bond between carbonyl and carboxyl groups [O?O 2.523 (2) Å]. 相似文献
7.
Elizabeth George Subramania Vivekanandan Kandasamy Sivakumar 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(10):1208-1209
In the title compound, sodium N‐chlorobenzenesulfonamide sesquihydrate, Na+·C6H5ClNO2S?·1.5H2O, the sodium ion exhibits octahedral coordination by O atoms from three water molecules and by three sulfonyl O atoms of three different N‐chlorobenzenesulfonamide anions. A two‐dimensional polymeric layer consists of units, each comprising two face‐sharing octahedra which share four corners with four other such units, the layer running parallel to the ab plane. The water molecules participate in hydrogen bonds of the types O—H?O, O—H?N and O—H?Cl. 相似文献
8.
Fabrizio Adani Enzo Montoneri Philip J. Squattrito 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(4):463-464
The title compound, C7H8FO6PS·H2O, contains both phosphonic and sulfonic acid functionalities. An extensive network of O—H?O hydrogen bonds is present in the crystal structure. The three acidic protons are associated with the phosphonate group. Two protons experience typical hydrogen‐bond contacts with the sulfonate‐O atoms, while the third has a longer covalent bond of 1.05 (3) Å to the phosphonate‐O atom and a short hydrogen‐bond contact of 1.38 (3) Å to the water O atom (all O—H?O angles are in the range 162–175°). The sulfonate group is positioned so that one S—O bond is nearly coplanar with the phenyl ring [torsion angle O—S—C—C ?8.6 (2)°]. The phosphonate group is oriented approximately perpendicular to the ring [torsion angle P—C—C—C 99.2 (2)°] with one P—O bond anti to the benzyl C—C bond. The molecules pack in layers in the b–c plane with the water molecules in between adjacent pairs of inverted layers. 相似文献
9.
Genivaldo Júlio Perptuo Jan Janczak 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(7):o372-o375
Crystals of 2,4,6‐triamino‐1,3,5‐triazine‐1,3‐dium bis(trifluoroacetate) trihydrate, C3H8N62+·2CF3COO−·3H2O, and 2,4,6‐triamino‐1,3,5‐triazine‐1,3‐dium bis(trichloroacetate) dihydrate, C3H8N62+·2CCl3COO−·2H2O, both contain doubly protonated melamine rings that lie on crystallographic twofold axes. In the former structure, one water molecule also lies on a twofold axis. While the trifluoroacetate compound crystallizes in a centrosymmetric space group, the trichloroacetate is non‐centrosymmetric, so it is useful as a material for non‐linear optics. The efficiency of second harmonic generation is about three times greater than that of KDP (KH2PO4). A combination of ionic and donor–acceptor hydrogen‐bond interactions link the melaminium(2+) residues with trifluoroacetate or trichloroacetate ions and water molecules to form a three‐dimensional network. 相似文献
10.
Peter G. Jones Olga Crespo M. Concepcin Gimeno Antonio Laguna 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(9):m411-m412
The title compound, [Ag(CF3O3S)(C10H9N3)]n, is a chain polymer in which neighbouring monomeric units are related by a glide plane. The silver centre is four‐coordinate; the donor atoms are one trifluoromethanesulfonate O atom and one pyridine N atom from each of two symmetry‐related dipyridylamines, and an additional and unexpected Ag⋯C contact [2.6464 (16) Å] is observed to a pyridine C atom. The chains are reinforced by one classical N—H⋯O and two `weak' C—H⋯O hydrogen bonds. 相似文献
11.
Lionel Salmon Pierre Thury Michel Ephritikhine Bernardo Masci 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(1):m27-m29
The title compound, [UO2(C33H38N2O2)2](CF3SO3)2·2C5H5N, has been obtained by reaction of UIV trifluoromethanesulfonate with p‐tert‐butyltetrahomodioxacalix[4]arene in pyridine. The uranyl ion lies on an inversion centre and is bound to two O atoms from each diphenoxide ligand, which gives the usual square‐planar equatorial environment. The zwitterionic diphenoxide species results from nucleophilic attack by pyridine on the benzylic ether C atoms of the homooxacalixarene, assisted by initial U coordination to the ether groups, with subsequent metal oxidation giving the uranyl moiety. 相似文献
12.
David J. Brauer Konstantin W. Kottsieper 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(5):o244-o246
The title compound, C2H7N4O+·CH4O3P−·H2O, crystallized with one carbamoylguanidinium cation, one methylphosphonate anion and one water molecule in the asymmetric unit. All H atoms of the carbamoylguanidinium ion are involved in a hydrogen‐bonded network. The CH3PO2(OH) anions, together with the water molecules, build O—H⋯O hydrogen‐bonded ribbons around a 21 screw axis parallel to the b axis. Neighbouring ribbons are not directly connected via hydrogen bonding. The carbamoylguanidinium cations are linked to these ribbons by N—H⋯O bridges and build a slightly buckled layer structure, the interlayer distance being b/2. 相似文献
13.
Samuel Sakwa Kraig A. Wheeler 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(6):o332-o334
The title compounds, bis(ammonium) naphthalene‐1,5‐disulfonate, 2NH4+·C10H6O6S22−, and bis[1‐(hydroxymethyl)‐3,5,7‐triaza‐1‐azoniatricyclo[3.3.1.13,7]decane] 1,5‐naphthalenedisulfonate, 2C7H15N4O+·C10H6O6S22−, were prepared from the acid‐promoted reaction of hexamethylenetetramine. In both structures, the disulfonate anion is positioned on an inversion center, with each sulfonate group contributing to the supramolecular assemblies via hydrogen bonds. The ammonium cations are linked to sulfonate groups by four distinct N+—H⃛−O—S contacts [N⃛O = 2.846 (2)–2.898 (2) Å and N—H⃛O = 160 (2)–175 (2)°], whereas the 1‐(hydroxymethyl)‐3,5,7‐triaza‐1‐azoniatricyclo[3.3.1.13,7]decane cations form one O—H⃛−O—S [O⃛O = 2.628 (2) Å and O—H⃛O = 176°] and three C—H⃛−O—S [C⃛O = 3.359 (2)–3.380 (2) Å and C—H⃛O = 148–155°] interactions to neighboring sulfonate groups. 相似文献
14.
Cheng-Zhu Liao Xiao-Long Feng Jun-Hua Yao Jiwen Cai 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(10):1215-1216
In the crystal structure of the title compound, 2C3H8NO2+·C12H8O6S22−, N—H⃛O hydrogen bonds formed between the amino H atoms and the sulfonate O atoms give rise to the assembly of cationic β-alaninium dimers and centrosymmetric biphenyl-4,4′-disulfonate anions into an extended two-dimensional layer. The resulting hydrogen-bonded ribbons can be described as C(6)R(12) according to graph-set notation. C—H⃛O hydrogen bonds between adjacent sheets further extend the structure into a three-dimensional arrangement. 相似文献
15.
Srinivasulu Aitipamula Ashwini Nangia Ram Thaimattam Mariusz Jasklski 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(8):o481-o484
In tris(4‐hydroxyphenyl)methane (or 4,4′,4′′‐methanetriyltriphenol), C19H16O3, molecules are connected by O—H⃛O hydrogen bonds [O⃛O = 2.662 (2) and 2.648 (2) Å] into two‐dimensional square networks that are twofold interpenetrated. In tris(4‐hydroxyphenyl)methane–4,4′‐bipyridine (1/1), C19H16O3·C10H8N2, trisphenol molecules form rectangular networks via O—H⃛O [O⃛O = 2.694 (3) Å] and C—H⃛O [C⃛O = 3.384 (3) Å] hydrogen bonds. Bipyridine molecules hydrogen bonded to phenol moieties [O⃛N = 2.622 (3) and 2.764 (3) Å] fill the voids to complete the structure. 相似文献
16.
A. Matos Beja V. H. Rodrigues J. A. Paixo M. M. R. R. Costa 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(2):o71-o72
The title compound, C2H6NO2+·C2Cl3O2−, crystallizes in the P41 space group with two glycinium cations and two trichloroacetate anions in the asymmetric unit. The glycinium cations have nearly Cs point‐group symmetry which is only broken by the H atoms of the amine group. The trichloroacetate anions show typical bond lengths and angles, one of the trichloromethyl groups being disordered. Chains of alternating anions and cations run along the c axis. Within these chains, consecutive anion–cation pairs are bound via strong hydrogen bonds involving the carboxylate anions and the carboxyl or amine groups of the cations. Weaker hydrogen bonds bind neighbouring chains together. 相似文献
17.
Roman Jambor Ivana Císaov Ale Rui
ka Jaroslav Hole
ek 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(4):373-374
In the title compound, [Sn(C6H5)2(C12H19N2)]Br·H2O, the SnIV atom lies on a twofold axis and is coordinated by a C and two N atoms from the 2,6‐bis[(dimethylamino)methyl]phenyl ligand in a tridentate fashion and by two phenyl groups. The resulting geometry is intermediate between square pyramidal and trigonal bipyramidal, with three C atoms in equatorial and the two N atoms in axial positions. The main deformation from ideal trigonal‐bipyramidal geometry is seen for the N—Sn—N angle [152.18 (7)°]. The Br? anion and the water solvate molecule are on an inversion centre and twofold axis, respectively. They form an infinite chain of Br?H—O—H?Br hydrogen bonds [Br?O 3.529 (2) Å] without contributing to the primary coordination sphere of the Sn atom. 相似文献
18.
Marina S. Fonari Eduard V. Ganin Wen‐Jwu Wang 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(7):o431-o433
In the centrosymmetric formula unit of the title complex, C8H16O4·2C18H16S, the 1,4,7,10‐tetraoxacyclododecane molecule adopts the biangular [66] conformation, and the triphenylmethanethiol molecules are linked to the macrocycle via a long S—H⋯O hydrogen bond [S⋯O = 3.460 (2) Å and S—H⋯O = 161 (2)°]. Attractive interactions of phenyl groups in edge‐to‐face conformations combine inversion‐related formula units into chains running along the [111] direction in the crystal structure. Association of the chains into sheets is achieved via C—H⋯π interactions. 相似文献
19.
Chan Soo Choi Ramaiyer Venkatraman Eun Hee Kim Hae Sook Hwang Sung Kwon Kang 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(4):o295-o296
Crystals of 2,4,6‐triamino‐1,3,5‐triazin‐1‐ium levulinate (4‐oxopentanoate) monohydrate, C3H7N6+·C5H7O3−·H2O, are formed via self‐assembled hydrogen bonding by cocrystallization of melamine and levulinic acid. Two N—H⋯N hydrogen bonds and four N—H⋯O hydrogen bonds connect two melaminium entities such that each of two pairs of N—H⋯O bonds bridges two H atoms belonging to the amine groups of two different melaminium cations via the carbonyl O atom of one levulinate molecule. 相似文献
20.
Guido J. Reiss Anja Zimmer Kaspar Hegetschweiler 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(3):284-288
The structures of 3‐amino‐1,2R,4S,5‐tetraammoniopentane tetrachloride monohydrate, C5H21N54+·4Cl?·H2O, and 1,2R,3,4S,5‐pentaammoniopentane tetrachlorozincate trichloride monohydrate, (C5H22N5)[ZnCl4]Cl3·H2O, have been determined from single‐crystal X‐ray diffraction data. Both compounds show a complex network of N—H?O, O—H?Cl and N—H?Cl hydrogen bonds. There are a total of 14 H atoms of the tetra‐cation and 15 H atoms of the penta‐cation available for hydrogen bonding. However, due to the particular shape of the primary linear polyammonium cations, only a certain number of H atoms can be involved in hydrogen‐bond formation. It is further shown that hydrogen bonding has an influence on the conformation of such alkylammonium cations. 相似文献