共查询到20条相似文献,搜索用时 15 毫秒
1.
Fang‐Jun Huo Cai‐Xia Yin Pin Yang 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(8):o500-o502
In the title compound, (5‐oxo‐3a,6a‐diphenylperhydroimidazo[4,5‐d]imidazol‐2‐ylidene)oxonium hydrogen sulfate, C16H15N4O2+·HSO4−, the asymmetric unit contains a hydrogen sulfate anion and a 3a,6a‐diphenylglycoluril oxonium cation. The hydrogen sulfate anion is joined to the oxonium cation via a strong O—H⋯O hydrogen bond (H⋯O = 1.69 Å). The crystal packing is mainly dominated by interactions involving the hydrogen sulfate anion. The diphenylglycoluril oxonium cations also self‐assemble through N—H⋯O hydrogen bonds, forming molecular chains along the [001] vector. Four intramolecular C—H⋯N hydrogen bonds are observed, having an S(5) motif. 相似文献
2.
Cheng‐Rong Ding Zhi‐Min Jin Hai‐Bin Wang Mao‐Lin Hu He Lin 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(5):m203-m204
The title compound, (C6H14N2)[Cr3O10], consists of a diazabicyclo[2.2.2]octane‐1,4‐diium cation and a discrete trichromate anion linked by an N—H⋯O hydrogen bond. Three CrO4 tetrahedra are joined via shared O atoms to form the trichromate anion. Supramolecular rings, which can be described by the graph‐set motif (26), are built via N—H⋯O hydrogen bonds, and C—H⋯O interactions play lesser roles in forming the structure. 相似文献
3.
Hong‐Xu Guo 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(10):m504-m506
In the title compound, [Fe(C5H5)(C8H13N)]2(SO4)·5H2O, the Fe—C bond lengths lie in the range 2.021 (3)–2.047 (2) Å. Intermolecular N—H⋯O and O—H⋯O hydrogen bonds link the cations, sulfate anions and water molecules into a two‐dimensional hydrogen‐bonded network, which stabilizes the crystal packing. 相似文献
4.
Carlos E. M. Carvalho Solange M. S. V. Wardell James L. Wardell Janet M. S. Skakle John N. Low Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(1):o28-o32
Molecules of the title compounds N2‐(benzoyloxy)benzamidine, C14H12N2O2, (I), N2‐(2‐hydroxybenzoyloxy)benzamidine, C14H12N2O3, (II), and N2‐benzoyloxy‐2‐hydroxybenzamidine, C14H12N2O3, (III), all have extended chain conformations, with the aryl groups remote from one another. In (I), the molecules are linked into chains by a single N—H⋯N hydrogen bond [H⋯N = 2.15 Å, N⋯N = 3.029 (2) Å and N—H⋯N = 153°] and these chains are linked into sheets by means of aromatic π–π stacking interactions. There is one intramolecular O—H⋯O hydrogen bond in (II), and a combination of one three‐centre N—H⋯(N,O) hydrogen bond [H⋯N = 2.46 Å, H⋯O = 2.31 Å, N⋯N = 3.190 (2) Å, N⋯O = 3.146 (2) Å, N—H⋯N = 138° and N—H⋯O = 154°] and one two‐centre C—H⋯O hydrogen bond [H⋯O = 2.46 Å, C⋯O = 3.405 (2) Å and C—H⋯O = 173°] links the molecules into sheets. In (III), an intramolecular O—H⋯N hydrogen bond and two N—H⋯O hydrogen bonds [H⋯O = 2.26 and 2.10 Å, N⋯O = 2.975 (2) and 2.954 (2) Å, and N—H⋯O = 138 and 163°] link the molecules into sheets. 相似文献
5.
Richard J. Bowen Manuel A. Fernandes Patricia W. Gitari Marcus Layh 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(2):o113-o114
In the crystal structure of 2,2′‐bipyridinium(1+) bromide monohydrate, C10H9N2+·Br−·H2O, the cation has a cisoid conformation with an intramolecular N—H⋯N hydrogen bond. The cation also forms an N—H⋯O hydrogen bond to an adjacent water molecule, which in turn forms O—H⋯Br− hydrogen bonds to adjacent Br− anions. In this way, a chain is formed extending along the b axis. Additional interactions (C—H⋯Br− and π–π) serve to stabilize the structure further. 相似文献
6.
Zhi‐Min Jin Hui‐Min Zhang Hai‐Bin Wang Mao‐Lin Hu Liang Shen 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(11):m572-m574
The title compound, (C6H14N2)[Cr2O7], consists of a diazabicyclo[2.2.2]octane‐1,4‐diium cation and a discrete dichromate anion, which are linked in the crystal by N—H⋯O hydrogen bonds. The cation is ordered and distorted, owing to the confinement and twist of the hydrogen bonds involved. Two CrO4 tetrahedra are joined through a shared O atom to form the dichromate anion. Chiral supramolecular chains of the title compound are built up via N—H⋯O hydrogen bonds, and C—H⋯O interactions play subordinate roles in forming the structure. 相似文献
7.
Bernard Marciniak 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(4):o252-o254
The asymmetric unit of the title compound, C10H8O2, contains two planar symmetry‐independent molecules linked by an O—H⋯O hydrogen bond. In the crystal structure, molecules are linked into infinite chains of rings, formed by a combination of O—H⋯O and C—H⋯O hydrogen bonds, and additionally reinforced by π–π stacking interactions. Adjacent chains are connected by weak C—H⋯π interactions. 相似文献
8.
Madhukar Hemamalini Packianathan Thomas Muthiah Urszula Rychlewska Agnieszka Plutecka 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(2):o95-o97
In the title compound, C6H10N3+·HSO4−, the asymmetric unit consists of a hydrogen sulfate anion and a 2‐amino‐4,6‐dimethylpyrimidinium cation. The hydrogen sulfate anions self‐assemble through O—H⋯O hydrogen bonds, forming supramolecular chains along the b axis, while the organic cations form base pairs via N—H⋯N hydrogen bonds. The aminopyrimidinium cations join to the sulfate anions via a pair of hydrogen bonds donated from the pyrimidinium protonation site and from the exo amine group cis to the protonated site. 相似文献
9.
Yao‐Cheng Shi Bei‐Bei Zhu Xiao‐Bi Jing 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(11):m559-m562
The molecules of N,N′‐bis(2‐pyridylmethyl)ferrocene‐1,1′‐diyldicarboxamide, [Fe(C12H11N2O)2], contain intramolecular N—H⋯N hydrogen bonds and are linked into sheets by three independent C—H⋯O hydrogen bonds. The molecules of the isomeric compound N,N′‐bis(3‐pyridylmethyl)ferrocene‐1,1′‐diyldicarboxamide lie across inversion centres, and the molecules are linked into sheets by a combination of N—H⋯N hydrogen bonds and π–π stacking interactions between pyridyl groups. 相似文献
10.
Bin Liu Jing‐Wen Chen Xiao‐Qing Chen Yi‐Zhi Li 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(2):m42-m44
The asymmetric unit of the title compound, [Ni2(C25H31N4O3)(C2H3O2)2]PF6·0.5H2O, consists of two dinuclear nickel cations, two hexafluorophosphate anions and one water molecule of crystallization. Within each cation, the Ni atoms are bridged by two exogenous acetate groups and an endogenous cresol O atom of a phenolate‐based `end‐off' compartmental ligand that possesses two pendant chelating arms attached to the ortho positions of the phenol ring. Each Ni atom is six‐coordinate with a slightly distorted octahedral geometry. The two symmetry‐independent cations are linked into a dimeric unit through O—H⋯O hydrogen bonds. Additional O—H⋯O, C—H⋯F and C—H⋯O intermolecular interactions link all of the units in the structure into a three‐dimensional framework. 相似文献
11.
Khalid A. Al‐Farhan 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(7):o531-o532
In the title compound, C18H15OP·C11H8O2, co‐crystallization of triphenylphosphine oxide with 1‐naphthoic acid yields a supramolecular structure held together by one O—H⋯O and three C—H⋯O hydrogen bonds. The O—H⋯O hydrogen bond [O⋯O = 2.592 (2) Å] has little effect on the O=P bond distance. 相似文献
12.
Vratislav Langer Eva Scholtzov Dalma Gyepesov Jozef Lusto Juraj Kronek 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(3):o187-o189
In the crystal structure of the title compound, C9H9NO3, there are strong intramolecular O—H⋯N and intermolecular O—H⋯O hydrogen bonds which, together with weak intermolecular C—H⋯O hydrogen bonds, lead to the formation of infinite chains of molecules. The calculated intermolecular hydrogen‐bond energies are −11.3 and −2.7 kJ mol−1, respectively, showing the dominant role of the O—H⋯O hydrogen bonding. A natural bond orbital analysis revealed the electron contribution of the lone pairs of the oxazoline N and O atoms, and of the two hydroxy O atoms, to the order of the relevant bonds. 相似文献
13.
Sheng‐Li Li Anwar Usman Ibrahim A. Razak Hoong‐Kun Fun Jie‐Ying Wu Yu‐Peng Tian Min‐Hua Jiang Zu‐Yao Chen 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(5):m181-m183
In the title compound, [Ni(CH5N3S)2(H2O)2](C4H3O4)2·2H2O, the Ni atom lies on a center of symmetry and is coordinated by N and S atoms from two thiosemicarbazide ligands and the O atoms of two water molecules in a distorted octahedral geometry. In the asymmetric unit, the three components are linked together by one O—H⋯O and two N—H⋯O hydrogen bonds. The packing is built from molecular ribbons parallel to the b direction, stabilized by intramolecular hydrogen bonds, and by one N—H⋯S and two N—H⋯O intermolecular hydrogen bonds. The ribbons are further connected into columns by N—H⋯O interactions and then into a three‐dimensional network by three O—H⋯O hydrogen bonds. 相似文献
14.
Simon J. Garden Marilza B. Corrêa Angelo C. Pinto James L. Wardell John N. Low Christopher Glidewell 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(4):o234-o238
In ethyl N‐[2‐(hydroxyacetyl)phenyl]carbamate, C11H13NO4, all of the non‐H atoms lie on a mirror plane in the space group Pnma; the molecules are linked into simple chains by a single C—H⋯O hydrogen bond. The molecules of ethyl N‐[2‐(hydroxyacetyl)‐4‐iodophenyl]carbamate, C11H12INO4, are linked into sheets by a combination of O—H⋯I and C—H⋯O hydrogen bonds and a dipolar I⋯O contact. Ethyl N‐[2‐(hydroxyacetyl)‐4‐methylphenyl]carbamate, C12H15NO4, crystallizes with Z′ = 2 in the space group P; pairs of molecules are weakly linked by an O—H⋯O hydrogen bond and these aggregates are linked into chains by two independent aromatic π–π stacking interactions. 相似文献
15.
Gordana Pavlovi Lidija Barii Vladimir Rapi Veronika Kova
《Acta Crystallographica. Section C, Structural Chemistry》2003,59(2):m55-m57
Heteroannularly substituted ferrocene derivatives can act as model systems for various hydrogen‐bonded assemblies of biomolecules formed, for instance, by means of O—H⋯O and N—H⋯O hydrogen bonding. The crystal structure analysis of 1′‐(tert‐butoxycarbonylamino)ferrocene‐1‐carboxylic acid, [Fe(C10H14NO2)(C6H5O2)] or (C5H4COOH)Fe(C5H4NHCOOC(CH3)3, reveals two independent molecules within the asymmetric unit, and these are joined into discrete dimers by two types of intermolecular hydrogen bonds, viz. O—H⋯O and N—H⋯O. The –COOH and –NHCOOR groups are archetypes for dimer formation via two eight‐membered rings. The O—H⋯O hydrogen bonds [2.656 (3) and 2.663 (3) Å] form a cyclic carboxylic acid dimer motif. Another eight‐membered ring is formed by N—H⋯O hydrogen bonds [2.827 (3) and 2.854 (3) Å] between the N—H group and an O atom of another carbamoyl moiety. The dimers are assembled in a herring‐bone fashion in the bc plane. 相似文献
16.
Andrew Hempel Lilian Y. Y. Ma Arthur Camerman Donald Mastropaolo Norman Camerman 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(12):o681-o682
In the crystal structure of the title dopaminergic compound, C16H24NO2+·Br−·H2O, protonation occurs at the piperidine N atom. The piperidine ring adopts a chair conformation and the cyclohexene ring adopts a half‐chair conformation; together with the planar benzene ring, this results in a relatively planar shape for the whole molecule. Classical hydrogen bonds (N—H⋯Br, O—H⋯Br and O—H⋯O) produce an infinite three‐dimensional network. Hydrogen bonds between water molecules and Br− anions create centrosymmetric rings throughout the crystal structure. Structural comparison of the molecule with the ergoline dopamine agonist pergolide shows that it is the hydrogen‐bond‐forming hydroxy or imino group that is necessary for dopaminergic activity, rather than the presence of a phenyl or a pyrrole ring per se. 相似文献
17.
Christopher Glidewell John N. Low Janet M. S. Skakle James L. Wardell 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(2):o120-o124
Molecules of 2‐(2‐nitrophenylaminocarbonyl)benzoic acid, C14H10N2O5, are linked into centrosymmetric R(8) dimers by a single O—H⋯O hydrogen bond [H⋯O = 1.78 Å, O⋯O = 2.623 (2) Å and O—H⋯O = 178°] and these dimers are linked into sheets by a single aromatic π–π stacking interaction. The isomeric compound 2‐(4‐nitrophenylaminocarbonyl)benzoic acid crystallizes in two polymorphic forms. In the orthorhombic form (space group P212121 with Z′ = 1, crystallized from ethanol), the molecules are linked into sheets of R(22) rings by a combination of one N—H⋯O hydrogen bond [H⋯O = 1.96 Å, N⋯O = 2.833 (3) Å and N—H⋯O = 171°] and one O—H⋯O hydrogen bond [H⋯O = 1.78 Å, O⋯O = 2.614 (3) Å and O—H⋯O = 173°]. In the monoclinic form (space group P21/n with Z′ = 2, crystallized from acetone), the molecules are linked by a combination of two N—H⋯O hydrogen bonds [H⋯O = 2.09 and 2.16 Å, N⋯O = 2.873 (4) and 2.902 (3) Å, and N—H⋯O = 147 and 141°] and two O—H⋯O hydrogen bonds [H⋯O = 1.84 and 1.83 Å, O⋯O = 2.664 (3) and 2.666 (3) Å, and O—H⋯O = 166 and 174°] into sheets of some complexity. These sheets are linked into a three‐dimensional framework by a single C—H⋯O hydrogen bond [H⋯O = 2.45 Å, C⋯O = 3.355 (4) Å and C—H⋯O = 160°]. 相似文献
18.
Nada Kouti Hulita Aleksandar Danilovski Darko Fili Marina Marinkovi Ernest Metrovi Miljenko Dumi 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(11):o648-o651
The structures of the three title isomers, namely 4‐(2‐methylanilino)pyridine‐3‐sulfonamide, (I), 4‐(3‐methylanilino)pyridine‐3‐sulfonamide, (II), and 4‐(4‐methylanilino)pyridine‐3‐sulfonamide, (III), all C12H13N3O2S, differ in their hydrogen‐bonding arrangements. In all three molecules, the conformation of the 4‐aminopyridine‐3‐sulfonamide moiety is conserved by an intramolecular N—H⋯O hydrogen bond and a C—H⋯O interaction. In the supramolecular structures of all three isomers, similar C(6) chains are formed via intermolecular N—H⋯N hydrogen bonds. N—H⋯O hydrogen bonds lead to C(4) chains in (I), and to R22(8) centrosymmetric dimers in (II) and (III). In each isomer, the overall effect of all hydrogen bonds is to form layer structures. 相似文献
19.
Sangeeta Ray Banerjee Jon Zubieta 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(6):m275-m277
The title compound, {[N,N‐bis(2‐pyridylmethyl)amino]ethanol‐κ3N,N′,N′′}tricarbonylrhenium(I) bromide methanol solvate, [Re(C14H17N3O)(CO)3]Br·CH4O, has been prepared in almost quantitative yield by reacting (NEt4)2[Re(CO)3Br3] with the ligand N,N‐bispicolyl‐2‐ethanolamine in refluxing methanol. The X‐ray structure revealed that the Re(CO)3N3 coordination sphere is highly distorted from octahedral geometry and that the Re(CO)3 core is facial. The coordinated ligand forms two five‐membered rings, with the pyridine rings in a butterfly formation. The OH group is not involved in metal coordination. The packing of the molecule shows a network of classical O⋯H—O and Br⋯H—O, and non‐classical Br⋯H—C and O⋯H—C hydrogen bonds between the methanol solvate molecules, the metal complex cations and the bromide anions. 相似文献
20.
Xue‐Li Zhang Sheng‐Run Zheng Yong‐Ru Liu Xiang‐Li Zheng Cheng‐Yong Su 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(9):o533-o536
The tris(1H‐benzimidazol‐2‐ylmethyl)amine (ntb) molecule crystallizes in different solvent systems, resulting in two kinds of adduct, namely the monohydrate, C24H21N7·H2O or ntb·H2O, (I), and the acetonitrile–methanol–water (1/0.5/1.5) solvate, C24H21N7·C2H3N·0.5CH4O·1.5H2O or ntb·1.5H2O·0.5MeOH·MeCN, (II). In both cases, ntb adopts a tripodal mode to form hydrogen bonds with a solvent water molecule via two N—H⋯O and one O—H⋯N hydrogen bond. In (I), the ntb·H2O adduct is further assembled into a two‐dimensional network by N—H⋯N and O—H⋯N hydrogen bonds, while in (II), a double‐stranded one‐dimensional chain structure is assembled via N—H⋯O and O—H⋯O hydrogen bonds, with the acetonitrile molecules located inside the cavities of the chain structure. 相似文献