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1.
Yalc˛ın Elerman Hülya Kara Keith Prout Andrew Johnston 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(10):1222-1224
The title compound, C9H19N3O·C4H7NO2, displays strong intramolecular O—H⃛N [O⃛N 2.6743 (13) Å] and N—H⃛N [N⃛N 2.6791 (15) Å] hydrogen bonds, and strong intermolecular O—H⃛N [O⃛N 2.7949 (15) Å] and N—H⃛O [N⃛O 3.0924 (16) Å] hydrogen bonds. This creates chains of perhydropyrimidine molecules, linked by hydrogen bonds. Each chain is linked to a partner chain, through hydrogen bonds to two butane-2,3-dione monooxime molecules, in a structure reminiscent of a ladder. 相似文献
2.
Paloma Arranz Mascars M. Dolores Gutirrez Valero John N. Low Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(4):o210-o212
The title compound, C10H13N5O6, exhibits a highly polarized molecular–electronic structure and the conformation is influenced by two intramolecular N—H⃛O hydrogen bonds. The molecules are linked into a single framework by hydrogen bonds of types O—H⃛O [O—H = 1.22, H⃛O = 1.38, O⃛O = 2.558 (6) Å and O—H⃛O = 160°], N—H⃛O [H⃛O = 2.26, N⃛O = 2.866 (6) Å and N—H⃛O = 126°] and O—H⃛N [O—H = 1.26, H⃛N = 1.56, O⃛N = 2.811 (6) Å and O—H⃛N = 170°]. The substructure generated by the O—H⃛O and N—H⃛O hydrogen bonds takes the form of a double helix. 相似文献
3.
M. Luz Godino Salido M. Dolores Gutirrez Valero John N. Low Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(6):o340-o342
Molecules of the title compound, C5H6N4O3, are linked into a single three‐dimensional framework by a two‐centre N—H⃛O hydrogen bond [H⃛O = 1.92 Å, N⃛O = 2.785 (2) Å and N—H⃛O = 168°], a two‐centre N—H⃛H hydrogen bond [H⃛N = 2.19 Å, N⃛N = 3.017 (2) Å and N—H⃛N = 157°] and the intermolecular component of an effectively planar three‐centre N—H⃛(O)2 hydrogen bond [H⃛O = 2.03 and 2.31 Å, N⃛O = 2.645 (2) and 2.957 (2) Å, N—H⃛O = 126 and 130°, and O⃛H⃛O = 101°]. 相似文献
4.
Katharine F. Bowes George Ferguson Alan J. Lough Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(8):o464-o466
In the title compound, C13H16N22+·2C2H4O5P−, the cation lies across a twofold rotation axis in space group Fdd2. The anions are linked into molecular ladders by two O—H⃛O hydrogen bonds [H⃛O = 1.73 and 1.77 Å, O⃛O = 2.538 (2) and 2.598 (3) Å, and O—H⃛O = 160 and 170°], these ladders are linked into sheets by a single type of N—H⃛O hydrogen bond [H⃛O = 1.75 Å, N⃛O = 2.624 (3) Å and N—H⃛O = 171°] and the sheets are linked into a three‐dimensional framework by a single type of C—H⃛O hydrogen bond [H⃛O = 2.48 Å, C⃛O = 3.419 (4) Å and C—H⃛O = 167°]. 相似文献
5.
Christopher Glidewell John N. Low Manuel Melguizo Antonio Quesada 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(4):o202-o204
Molecules of the title compound, C6H9N3O2, are linked by an N—H⃛O hydrogen bond [H⃛O = 2.29 Å, N⃛O = 3.169 (2) Å and N—H⃛O = 173°] and an N—H⃛N hydrogen bond [H⃛N = 2.12 Å, N⃛N = 2.999 (2) Å and N—H⃛N = 175°] into sheets containing centrosymmetric R(8) and R(28) rings; the sheets are reinforced by a single aromatic π–π‐stacking interaction. 相似文献
6.
Katharine F. Bowes George Ferguson Alan J. Lough Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(3):o147-o149
The title compound is an ethanol‐solvated salt, C16H38N42+·2C11H7O2−·2C2H6O, in which the cation lies across a centre of inversion in P21/c. The ions are linked by N—H⃛O hydrogen bonds [H⃛O = 1.70 and 2.30 Å, N⃛O = 2.624 (2) and 3.136 (2) Å, and N—H⃛O = 178 and 151°], and the ethanol molecule is linked to the anion by an O—H⃛O hydrogen bond [H⃛O = 1.90 Å, O⃛O = 2.728 (2) Å and O—H⃛O = 171°], to form a centrosymmetric five‐component aggregate. C—H⃛O hydrogen bonds and aromatic π–π‐stacking interactions are absent, but the aggregates are linked into sheets by a single C—H⃛π(arene) hydrogen bond. 相似文献
7.
Christopher Glidewell John N. Low Janet M. S. Skakle James L. Wardell 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(3):o95-o97
Molecules of the title compound, C12H9IN2O2S, are linked by one N—H⃛O hydrogen bond [H⃛O = 2.16 Å, N⃛O = 2.935 (4) Å and N—H⃛O 147°] and two C—H⃛O hydrogen bonds [H⃛O both 2.49 Å, C⃛O = 3.231 (5) and 3.220 (5) Å, and C—H⃛O = 135 and 134°] into sheets which themselves are weakly linked by an aromatic π–π‐stacking interaction between iodinated rings in centrosymmetrically related molecules. There are no iodo–nitro interactions. 相似文献
8.
Fangfang Jian Fengli Bei Xujie Yang Lude Lu Xin Wang Ibrahim Abdul Razak S. Shanmuga Sundara Raj Hoong-Kun Fun 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(2):176-177
In the title compound, C14H10N2O2·2H2O, the water molecules are involved in hydrogen bonds and interactions. Intermolecular and intramolecular O—H⃛O hydrogen bonds connect the complex into chains along the a axis, whereas N—H⃛O intermolecular hydrogen bonds and C—H⃛O interactions interconnect these layers forming a three-dimensional network. 相似文献
9.
Katharine F. Bowes George Ferguson Alan J. Lough Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(6):o329-o331
The title compound is a methanol‐solvated salt, C16H38N42+·C4H4O52−·2CH3OH, in which the ionic components are linked into chains by two pairs of N—H⃛O hydrogen bonds [H⃛O = 1.78–2.21 Å, N⃛O = 2.702 (14)–3.094 (8) Å and N—H⃛O = 160–179°]. The methanol molecules are pendent from the chain and are linked to it by O—H⃛O hydrogen bonds [H⃛O = 1.86 and 1.89 Å, O⃛O = 2.691 (9) and 2.708 (16) Å, and O—H⃛O = 168 and 165°]. 相似文献
10.
Paloma Arranz Mascars Rafael Cuesta Martos Christopher Glidewell John N. Low 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(6):o326-o328
In the title compound, NH4+·C7H8N5O4−·H2O, the independent components are linked into bilayers by an extensive series of two‐centre N—H⃛O hydrogen bonds [H⃛O = 1.85–1.96 Å, N⃛O = 2.776 (2)–2.840 (2) Å and N—H⃛O = 149–172°], and by asymmetric three‐centre N—H⃛(O)2, O—H⃛(N,O) and O—H⃛(O)2 hydrogen bonds. 相似文献
11.
Hai‐Liang Zhu Anwar Usman Hoong‐Kun Fun Xian‐Jiang Wang 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(6):m218-m220
In the title compound, [Ag(C7H5O2)(C5H6N2)2], the AgI atom is tricoordinated by two independent pyridine N atoms and one benzoate O atom in a nearly planar geometry. An intramolecular N—H⃛O hydrogen bond forms an S(8) graph ring. The packing is built from molecular layers stabilized by two types of N—H⃛O hydrogen bond. Intermolecular Ag⃛N and intramolecular Ag⃛O contacts were also observed, together with three weak intermolecular C—H⃛π interactions. 相似文献
12.
Christopher Glidewell John N. Low Susan A. McWilliam Janet M. S. Skakle James L. Wardell 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(10):1209-1211
In the title compound, C7H5N3O2S, the molecules are linked into a three-dimensional framework by a combination of a three-centre N—H⃛(O)2 hydrogen bond, and two-centre N—H⃛N and C—H⃛O hydrogen bonds. 相似文献
13.
Tuncer Hökelek Muhammed Işıklan Zeynel Kılıç 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(1):117-119
In the title compound, C18H17N3O2, a strong intramolecular O—H⃛N hydrogen bond [N⃛O 2.607 (3), O—H 0.97 (3) and H⃛N 1.71 (3) Å, and O—H⃛N 153 (2)°] was observed, which leads to a unique phenol–imine tautomerism in the solid state. The C=N imine bond distance and the C—N—C bond angle [1.287 (2) Å and 121.7 (1)°, respectively] indicate the existence of this phenol–imine tautomer. In solution, the phenol–imine tautomer of the title free Schiff base ligand is dominant in both polar and non-polar solvents, as supported by 1H NMR and UV–visible spectroscopic data. 相似文献
14.
E. Mothi Mohamed Samraj Muralidharan Krishnaswamy Panchanatheswaran Rengan Ramesh John N. Low Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(7):o367-o369
Molecules of the title compound, alternatively called (R,R)‐N,N′‐bis(3‐methoxysalicylidene)‐trans‐cyclohexane‐1,2‐diamine, C22H26N2O4, contain two intramolecular O—H⃛N hydrogen bonds and adopt a conformation with approximate twofold rotational symmetry. The molecules are linked by three C—H⃛O hydrogen bonds [H⃛O = 2.45–2.55 Å, C⃛O = 3.329 (2)–3.398 (2) Å and C—H⃛O = 142–172°] into a continuous framework. 相似文献
15.
Selcuk Demir Veysel T. Yilmaz William T. A. Harrison 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(7):o378-o380
The title compound, C6H8NO+·H2PO4−, consists of 2‐(hydroxymethyl)pyridinium and dihydrogenphosphate ions. The dihydrogenphosphate moieties are linked into chains by pairs of P—O—H⃛O—P hydrogen bonds. The 2‐(hydroxymethyl)pyridinium cations are connected to the dihydrogenphosphate units by O—H⃛O and N—H⃛O hydrogen bonds. Weak π–π interactions help to determine the interchain packing. 相似文献
16.
George Ferguson Christopher Glidewell John N. Low Janet M. S. Skakle James L. Wardell 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(3):315-316
Molecules of 2-methyl-4-nitroaniline, C7H8N2O2, act as double donors and as double acceptors of N—H⃛O hydrogen bonds [N⃛O 3.117 (3) and 3.239 (3) Å; N—H⃛O 169 and 136°]. The molecules are thereby linked into a three-dimensional framework. 相似文献
17.
Antonio Quesada Antonio Marchal John N. Low Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(3):o102-o104
In the title compound, C14H23N6O2+·HSO4−·H2O, the pyrimidinium ring of the cation adopts a twist‐boat conformation, induced by steric clashes between adjacent ring substituents; the anions and the water molecules are linked by three O—H⃛O hydrogen bonds [H⃛O = 1.70–1.78 Å, O⃛O = 2.548 (2)–2.761 (2) Å and O—H⃛O = 161–168°] into chains of edge‐fused R(12) rings, which are linked into sheets by the cations, via three N—H⃛O hydrogen bonds [H⃛O = 1.96–2.17 Å, N⃛O = 2.820 (2)–2.935 (2) Å and N—H⃛O = 145–173°]. 相似文献
18.
Ashok K. Varma Ashwini Nangia Gautam R. Desiraju Venkatachalam S. Giri Parasuraman Jaisankar 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(1):97-99
3-Acetyl-1,6,7,12b-tetrahydroindolo[2,3-a]quinolizin-2(12H)-one, C17H16N2O2, consists of two symmetry-independent molecules and each forms a layered structure stabilized by N—H⃛O and C—H⃛O hydrogen bonds. In 3-acetyl-6,7-dihydroindolo[2,3-a]quinolizin-4(12H)-one monohydrate, C17H14N2O2·H2O, the structure is stabilized by O—H⃛O, N—H⃛O and C—H⃛O hydrogen bonds, with the ordered water molecule playing a crucial role in the self-assembly. Contribution from the weak interactions to the strong hydrogen-bonded network is a common feature in both structures. 相似文献
19.
Colin J. Burchell George Ferguson Alan J. Lough Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(1):88-91
The title compound is a salt, 3,6,9,16,19,22-hexaazatricyclo[22.2.2.211,14]triaconta-1(26),11(29),12,14(30),24,27-hexaene–3,5-dinitrobenzoic acid–methanol (1/4/2), C24H42N64+·4C7H3N2O6−·2CH4O, in which the cation lies across a centre of inversion and one of the two independent anions is positionally disordered over two sets of atom sites having equal occupancy. The components are linked by four types of N—H⃛O hydrogen bond [N⃛O 2.674 (2)–2.815 (2) Å; N—H⃛O 149–163°] and one type of O—H⃛O hydrogen bond in which the acceptor is disordered over two closely adjacent sites [O⃛O 2.67 (4) and 2.75 (4) Å; O—H⃛O 172 and 173°], forming centrosymmetric seven-component aggregates. 相似文献
20.
Colin J. Burchell George Ferguson Alan J. Lough Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(3):311-314
Tet-b (racemic 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, C16H36N4) and trimesic acid (1,3,5-benzenetricarboxylic acid, C9H6O6) form a salt partially solvated by both water and methanol, i.e. 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane–1,3,5-benzenetricarboxylic acid–methanol–water (1/1/0.78/1.12), C16H38N42+·C9H4O62−·0.78CH4O·1.12H2O. The anions are linked by O—H⃛O hydrogen bonds [O⃛O 2.442 (4) and 2.458 (4) Å; O—H⃛O 170 and 171°] into zigzag chains; orientationally disordered cations are linked to the anion chains by means of N—H⃛O hydrogen bonds [major orientation: N⃛O 2.695 (3)–3.071 (4) Å, N—H⃛O 148–179°; minor orientation: N⃛O 2.75 (2)–3.34 (2) Å, N—H⃛O 147–170°] and link the chains into sheets. The solvent molecules are all disordered, but appear to play no significant structural role apart from space filling. 相似文献