共查询到20条相似文献,搜索用时 15 毫秒
1.
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
2.
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
3.
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
4.
Li Wu Hui‐Min Liu Wen‐Tao Zhao Wen‐Qin Zhang 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(7):o435-o437
In the title compound, C28H30BrN3O4, the molecules are linked by C—H⋯Br and N—H⋯O hydrogen bonds into one‐dimensional chains, which are arranged into a three‐dimensional network through a combination of C—H⋯O hydrogen bonds and two kinds of π–π interactions between the benzene rings of the anthraquinone units. 相似文献
5.
Carolina Gastone Jordi Puiggalí Merc Font‐Bardia Lourdes Urpí 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(8):o498-o500
Crystals of the title compound, C8H14ClNO3, belong to the space group Cc and are characterized by an asymmetric unit containing two molecules, both with a twisted conformation. The molecular packing is stabilized by N—H⋯O=C hydrogen bonds between the amide groups of molecules with the same conformation. In addition, hydrogen‐bonded cyclic carboxylic acid dimers are established between molecules with a different conformation. The ClCH2—CONH bond has a cis conformation in order to favour an intramolecular Cl⋯HN electrostatic interaction. Weak intra‐ and intermolecular CH2⋯O=C interactions are also present. 相似文献
6.
Zhong‐Lu You 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(8):m383-m385
The two title complexes, [ZnCl2(C11H15N3O3)], (I), and [ZnCl2(C11H15N3O3)]·0.5H2O, (II), are mononuclear zinc(II) compounds. In both structures, the ZnII atom is four‐coordinated in a tetrahedral configuration by one imine N atom and one phenolate O atom of a Schiff base, and by two Cl atoms. The structure of each of the two zinc(II) complex molecules of (II) is similar to that of (I). In (I), the molecules are linked through intermolecular hydrogen bonds, forming a three‐dimensional framework. In (II), the solvent water molecules are linked to the zinc(II) moieties through intermolecular O—H⋯O and O—H⋯Cl hydrogen bonds. The molecules in (II) are further linked via other intermolecular hydrogen bonds, forming a three‐dimensional framework. 相似文献
7.
Muharrem Diner Namk
zdemir Ahmet etin Tekin Keser Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(11):o639-o642
In the title compound, C22H25N5OS·2H2O, the molecules are stacked in columns running along the b axis. In this arrangemant, the molecules are linked to each other by a combination of one two‐centre N—H⋯O hydrogen bond and four two‐centre O—H⋯O hydrogen bonds containing two types of ring motif, viz.R44(10) and R33(11). In the crystal structure, centrosymmetric π–π interactions between the triazole rings, with a distance of 3.691 (2) Å between the ring centroids, also affect the packing of the molecules. 相似文献
8.
Ilia A. Guzei Lara C. Spencer Robert W. McGaff Heidi M. Kieler Jerome R. Robinson 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(4):o255-o258
Hydrogen bonds of four types (N—H⋯O=C, N—H⋯OH, O—H⋯O=C and O—H⋯OH) connect molecules of the title compound, C14H20N2O4, in the crystal into sheets folded into a zigzag pattern. The intermolecular interactions are discussed in terms of the first‐ through fourth‐level graph sets, and a constructor graph helps visualize the supramolecular assembly. 相似文献
9.
Marcilio S. S Cunha‐Filho Mariana Landin Ramon Martinez‐Pacheco Bruno Dacunha‐Marinho 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(8):o473-o475
The most remarkable aspect of the crystal structure of the title compound (systematic name: 3,4‐dihydro‐2,2‐dimethyl‐2H‐naphtho[1,2‐b]pyran‐5,6‐dione), C15H14O3, is that a π‐stacking interaction is present between the two naphthalene ring systems of symmetry‐related molecules. Apart from these π–π interactions, different molecules are held together by weak C—H⋯O hydrogen‐bonding interactions. 相似文献
10.
Si‐Jia Xue Qing‐Dong Wang Jing‐Zhi Li 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(11):o666-o668
In the title compound, C15H15N5O3S, two parallel intermolecular N—H⋯S hydrogen bonds, forming an eight‐membered ring, link two molecules into a dimer unit; these dimer units linked into a chain of edge‐fused rings by weak C—H⋯O hydrogen bonds. 相似文献
11.
Jan W. Bats Christian Miculka Christian R. Noe 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(3):o190-o192
The title compound, C21H28O8, crystallizes with two independent molecules, each with a crystallographic twofold axis passing through the central CH2 group. The two molecules have different orientations of the terminal benzyl groups. The average C—O bond length in the polyoxymethylene helix, corrected for librational motion, is 1.419 Å. The molecules are connected into layers by intermolecular C—H⋯O and C—H⋯π(phenyl) interactions. 相似文献
12.
Muharrem Diner brahim Ylmaz Namk
zdemir Alaaddin ukuroval Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(1):o13-o15
In the title compound, 2‐hydroxy‐1,2‐diphenylethanone 4‐ethylthiosemicarbazone, C17H19N3OS, the thiosemicarbazone moiety is planar and has an E configuration. The planar phenyl rings make dihedral angles of 82.34 (8) and 8.07 (17)° with the plane of the thiosemicarbazone moiety. The crystal structure contains two intramolecular (N—H⋯O and N—H⋯N) and one intermolecular interaction (O—H⋯S), as well as two C—H⋯π(benzene) interactions. Molecules are stacked in columns running along the a axis. Molecules in each column are connected to each other by means of linear O—H⋯S hydrogen bonds and C—H⋯π interactions. In addition, there are also C—H⋯π(benzene) interactions between the columns. 相似文献
13.
Veysel T. Yilmaz Canan Kazak Cumhur Kirilmis Murat Koca Frank W. Heinemann 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(7):o438-o441
The molecules of 2‐benzoyl‐1‐benzofuran, C15H10O2, (I), interact through double C—H⋯O hydrogen bonds, forming dimers that are further linked by C—H⋯O, C—H⋯π and π–π interactions, resulting in a three‐dimensional supramolecular network. The dihedral angle between the benzoyl and benzofuran fragments in (I) is 46.15 (3)°. The molecules of bis(5‐bromo‐1‐benzofuran‐2‐yl) ketone, C17H8Br2O3, (II), exhibit C2 symmetry, with the carbonyl group (C=O) lying along the twofold rotation axis, and are linked by a combination of C—H⋯O and C—H⋯π interactions and Br⋯Br contacts to form sheets. The stability of the molecular packing in 3‐mesityl‐3‐methylcyclobutyl 3‐methylnaphtho[1,2‐b]furan‐2‐yl ketone, C28H28O2, (III), arises from C—H⋯π and π–π stacking interactions. The fused naphthofuran moiety in (III) is essentially planar and makes a dihedral angle of 81.61 (3)° with the mean plane of the trimethylbenzene ring. 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.
A. N. C. Ltter M. A. Fernandes W. A. L. van Otterlo C. B. de Koning 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(3):o157-o159
The title compound, C15H11Cl2NO, was synthesized from N‐benzylisatin. The compound crystallizes as stacks of molecules running down the c axis. Molecules within each of these stacks interact with each other through π–π and C—H⋯π interactions, and interact with neighbouring stacks through C—H⋯O interactions. 相似文献
16.
Elizabeth M. Kikolski Hugh W. Thompson Roger A. Lalancette 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(7):o394-o396
The asymmetric unit of the title compound, C24H36O4, contains three molecules, all differing in their side‐chain conformations and all linked by hydrogen bonding confined entirely within a three‐molecule block. One connection is of the acid‐to‐ketone type [O⋯O = 2.7055 (19) Å and O—H⋯O = 180°] and the other involves carboxyl pairing [O⋯O = 2.6485 (18) and 2.6598 (18) Å, and O—H⋯O = 168 and 174°]. Numerous intermolecular C—H⋯O close contacts connect neighbouring molecules. 相似文献
17.
Yao‐Cheng Shi Bei‐Bei Zhu Chun‐Xia Sui 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(12):m577-m580
Molecules of 1‐acetyl‐3‐ferrocenyl‐5‐methyl‐1H‐pyrazole, [Fe(C5H5)(C11H11N2O)], form a centrosymmetric dimer generated by a combination of one C—H⋯π(pyrazole) and one C—H⋯π(cyclopentadienyl) interaction. The dimers are linked by C—H⋯π interactions, involving the pyrazole rings as acceptors, into layers parallel to (10). Molecules of 1‐acetyl‐5‐ferrocenyl‐3‐(2‐pyridyl)‐1H‐pyrazole, [Fe(C5H5)(C15H12N3O)], are linked by C—H⋯O interactions into a chain running in the [010] direction. Two chains of this type passing through each unit cell are connected by O⋯π(pyridyl) interactions into an [010] double chain. 相似文献
18.
Md. Abdul Jabbar Isao Aritome Hisashi Shimakoshi Yoshio Hisaeda 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(11):o663-o665
The title compound, C14H10Cl2, crystallizes as colourless prisms with two symmetry‐independent molecules in the unit cell. Numerous intermolecular C—H⋯π interactions dominate in the crystal structure, where C—H⋯Cl and long Cl⋯Cl contacts are also observed. 相似文献
19.
Muharrem Diner Namk
zdemir Ahmet etin Ahmet Cansz Orhan Büyükgüngr 《Acta Crystallographica. Section C, Structural Chemistry》2005,61(11):o665-o667
The title compound, C14H9N5S, has been synthesized and characterized both spectroscopically and structurally. The triazolo–thiadiazole system, the pyridine ring and the phenyl ring are all planar. The plane of the triazolo–thiadiazole system forms dihedral angles of 1.53 (13) and 7.55 (12)° with the planes of the pyridine and phenyl rings, respectively. In the molecule, there are two intramolecular interactions of types C—H⋯N and C—H⋯S. Intermolecular C—H⋯N interactions involving a phenyl CH group and a triazole N atom lead to the formation of a one‐dimensional chain. In the crystal structure, two types of π–π interactions affect the packing of the molecules. In addition, there are intermolecular non‐bonded S⋯N contacts of 2.870 (2) Å, which may cause steric hindrance. 相似文献
20.
T. Vijay T. Narasimhamurthy H. S. Yathirajan R. S. Rathore P. Nagaraja 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(1):o36-o38
In the crystal structure of the title salt, C7H7Cl2N2O2+·Cl−, the chloride anions participate in extensive hydrogen bonding with the aminium cations and indirectly link the molecules through multiple N+—H⋯Cl− salt bridges. There are two independent molecules in the asymmetric unit, related by a pseudo‐inversion center. The direct intermolecular coupling is established by C—H⋯O, C—H⋯Cl and C—Cl⋯Cl− interactions. A rare three‐center (donor bifurcated) C—H⋯(O,O) hydrogen bond is observed between the methylene and nitro groups, with a side‐on intramolecular component of closed‐ring type and a head‐on intermolecular component. 相似文献