scholarly journals Aqua(propanedioato-κ2O1,O3)[2-(1H-pyrazol-1-yl-κN2)-1,10-phenanthroline-κ2N,N′]nickel(II) trihydrate

2009 ◽  
Vol 65 (6) ◽  
pp. m647-m647 ◽  
Author(s):  
Huai Yi Yan ◽  
Tai Qiu Hu ◽  
Jing Min Shi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Mononuclear Complex ◽  
Metal Center ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Stacking ◽  
Dimensional Network ◽  
Centroid Distance

In the title mononuclear complex, [Ni(C3H2O4)(C15H10N4)(H2O)]·3H2O, the metal center is coordinated in a distorted NiN3O3geometry. In the crystal structure, intermolecular O—H...O hydrogen bonds link the components into a two-dimensional network. In addition, there are weak π–π stacking interactions between symmetry-related phenanthroline rings, with a centroid–centroid distance of 3.6253 (17) Å.

scholarly journals 2,3-Dimethylquinazolin-4(3H)-one

2014 ◽  
Vol 70 (7) ◽  
pp. o788-o788
Author(s):  
Fozil E. Saitkulov ◽  
Azamat A. Tashniyazov ◽  
Azimjon A. Mamadrahimov ◽  
Kh. M. Shakhidoyatov
Keyword(s):  
Hydrogen Bonds ◽  
Maximum Deviation ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Interactions ◽  
Π Stacking ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Title Molecule

The non-H atoms of the title molecule, C10H10N2O, are essentially coplanar, with a maximum deviation of 0.046 (4) Å for the O atom. In the crystal, molecules are linked by weak C—H...O hydrogen bonds, forming chains along [010]. In addtion, weak C—H...π interactions and π–π stacking interactions between benzene and pyrimidine rings, with a centroid–centroid distance of 3.730 (3) Å, link the chains, forming a two-dimensional network parallel to (001).

Bis{4-[(4-pyridyl)ethenyl]pyridinium} 4-sulfonatobenzoate trihydrate

2006 ◽  
Vol 62 (4) ◽  
pp. o1529-o1531 ◽  
Author(s):  
Li-Ping Zhang ◽  
Long-Guan Zhu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Proton Transfer ◽  
Water Molecules ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
One Dimensional ◽  
Π Stacking ◽  
Dimensional Network ◽  
Hydrogen Bonded

In the crystal structure of the title organic proton-transfer complex, 2C12H11N2 +·C7H4O5S2−·3H2O, the cations form one-dimensional chains via intermolecular N—H...N hydrogen bonds and these chains, in turn, form a two-dimensional network through π–π stacking interactions. In addition, the anions and water molecules are connected into a two-dimensional hydrogen-bonded network through intermolecular O—H...O hydrogen bonds. The two motifs result in sheets of cations and anions stacked alternately.

scholarly journals Crystal structure of 6-bromo-7-fluoro-4-oxo-4H-chromene-3-carbaldehyde

2015 ◽  
Vol 71 (7) ◽  
pp. 857-860 ◽  
Author(s):  
Yoshinobu Ishikawa
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Least Squares ◽  
Title Compound ◽  
Weak Interactions ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Compound C ◽  
Dimensional Network ◽  
Centroid Distance

In the title compound, C10H4BrFO3, a brominated and fluorinated 3-formylchromone derivative, all atoms are essentially coplanar (r.m.s. deviation of 0.025 Å for the non-H atoms), with the largest deviation from the least-squares plane [0.050 (6) Å] being for a benzene-ring C atom. In the crystal, molecules are linked through stacking interactions [centroid–centroid distance between the benzene and pyran rings = 3.912 (4) Å], C—H...O hydrogen bonds and short C...O contacts [2.865 (7) Å]. Unsymmetrical halogen...halogen interactions between the bromine and fluorine atoms [Br...F = 3.116 (4) Å, C—Br...F = 151.8 (2), C—F...Br = 154.1 (4)°] are also formed, giving a meandering two-dimensional network propagating in the (041) plane. A comparison with related structures is made and the various types of weak interactions are ranked in importance.

7-Diethylamino-2-oxo-2H-chromene-3-carboxylic acid

2006 ◽  
Vol 62 (7) ◽  
pp. o3076-o3078 ◽  
Author(s):  
Ghasem Rezanejade Bardajee ◽  
Mitchell A. Winnik ◽  
Alan J. Lough
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Carboxylic Acid ◽  
Hydrogen Bonds ◽  
Methyl Groups ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Stacking ◽  
Dimensional Network

In the title molecular structure, C14H15NO4, all non-H atoms, except for the C atoms of the terminal methyl groups of the diethylamino substituents, are essentially coplanar. In the crystal structure, a two-dimensional network is formed via weak intermolecular C—H...O hydrogen bonds and π–π stacking interactions.

scholarly journals Crystal structure of 4-amino-5-chloro-2,6-dimethylpyrimidinium thiophene-2,5-dicarboxylate

2016 ◽  
Vol 72 (7) ◽  
pp. 1043-1046 ◽  
Author(s):  
Ammaiyappan Rajam ◽  
Packianathan Thomas Muthiah ◽  
Ray J. Butcher ◽  
Matthias Zeller
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Double Layers ◽  
Stacking Interactions ◽  
Π Interactions ◽  
Π Stacking ◽  
Dimensional Network ◽  
Centroid Distance

In the title salt, C6H9ClN3+·C6H3O4S−, the cations and anions are linkedviaO—H...O and N—H...O hydrogen bonds, formingR66(37) ring motifs that are interconnected with each other, producing sheets. Separate parallel inversion-related sheets are linked through N—H...N and π–π stacking interactions [centroid–centroid distance = 3.5414 (13) Å], forming double layers parallel to (101). Weak C—H...O and C—H...S hydrogen bonds, as well as C—H...π interactions, connect the double layers into a three-dimensional network.

Trichlorido(N,N-dimethylformamide-κO)bis(1,10-phenanthroline-κ2 N,N′)lanthanum(III) N,N-dimethylformamide disolvate

2007 ◽  
Vol 63 (11) ◽  
pp. m2637-m2638 ◽  
Author(s):  
Li-Ming Zhou ◽  
Guang-Hui Sun ◽  
Li-Jun Gao ◽  
Shao-Ming Fang ◽  
Wei-Dong Yan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Stacking ◽  
Dimensional Network ◽  
A Chain ◽  
Phenanthroline Ligands

In the title compound, [LaCl3(C12H8N2)2(C3H7NO)]·2C3H7NO, the LaIII ion is eight-coordinated by four N donors from two 1,10-phenanthroline ligands, one O atom from one N,N-dimethylformamide molecule and three chloride anions. In the crystal structure, the LaIII mononuclear units are linked to form a chain along the a axis by weak C—H...Cl hydrogen bonds. The chains are crosslinked to form a two-dimensional network parallel to the ab plane by π–π stacking interactions between the phen rings [centroid–centroid seperations range from 3.589 (2) to 3.708 (2) Å].

scholarly journals (E)-4-[7-(2,3-Dihydrothieno[3,4-b][1,4]dioxin-5-yl)-2,1,3-benzothiadiazol-4-yl]-2-[(neopentylimino)methyl]phenol

2014 ◽  
Vol 70 (8) ◽  
pp. o848-o849
Author(s):  
Lauren A. Mitchell ◽  
Jordan A. Dinser ◽  
Bradley J. Holliday
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Ring System ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Stacking ◽  
Dimensional Network ◽  
Centroid Distance ◽  
Title Molecule

In the title molecule, C24H23N3O3S2, the benzothiadiazole ring system is essentially planar, with an r.m.s. deviation of 0.020 (8) Å. The thiophene and hydroxy-substitiuted rings form dihedral angles of 23.43 (9) and 35.45 (9)°, respectively, with the benzothiadiazole ring system. An intramolecular O—H...N hydrogen bond is observed. In the crystal, weak C—H...O hydrogen bonds and π–π stacking interactions [centroid–centroid distance = 3.880 (3) Å] link molecules into chains along [100]. In addition, there are short S...S contacts [3.532 (3) Å] which link these chains, forming a two-dimensional network parallel to (010).

scholarly journals Bis(thiocyanato-κN)[tris(pyridin-2-ylmethyl)amine-κ4N]iron(II)

2014 ◽  
Vol 70 (2) ◽  
pp. m35-m35
Author(s):  
Jing-Wei Dai ◽  
Zhao-Yang Li ◽  
Osamu Sato
Keyword(s):  
Hydrogen Bonds ◽  
Octahedral Geometry ◽  
Title Complex ◽  
Stacking Interactions ◽  
Supramolecular Architecture ◽  
Two Dimensional ◽  
Π Stacking ◽  
Centroid Distance ◽  
Solvent Molecules ◽  
Amine Ligand

In the title complex, [Fe(NCS)2(C18H18N4)], the FeIIcation is chelated by a tris(2-pyridylmethyl)amine ligand and coordinated by two thiocyanate anions in a distorted N6octahedral geometry. In the crystal, weak C—H...S hydrogen bonds and π–π stacking interactions between parallel pyridine rings of adjacent molecules [centroid–centroid distance = 3.653 (3) Å] link the molecules into a two-dimensional supramolecular architecture. The structure contains voids of 124 (9) Å3, which are free of solvent molecules.

scholarly journals Crystal structure of 2-bromo-1,4-dihydroxy-9,10-anthraquinone

2014 ◽  
Vol 70 (10) ◽  
pp. o1130-o1130 ◽  
Author(s):  
Wataru Furukawa ◽  
Munenori Takehara ◽  
Yoshinori Inoue ◽  
Chitoshi Kitamura
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking ◽  
Dimensional Network

In an attempt to brominate 1,4-dipropoxy-9,10-anthraquinone, a mixture of products, including the title compound, C14H7BrO4, was obtained. The molecule is essentially planar (r.m.s. deviation = 0.029 Å) and two intramolecular O—H...O hydrogen bonds occur. In the crystal, the molecules are linked by weak C—H...O hydrogen bonds, Br...O contacts [3.240 (5) Å], and π–π stacking interactions [shortest centroid–centroid separation = 3.562 (4) Å], generating a three-dimensional network.

scholarly journals N1-[(1H-Imidazol-2-yl)methylidene]-N4-phenylbenzene-1,4-diamine

2014 ◽  
Vol 70 (7) ◽  
pp. o806-o806 ◽  
Author(s):  
Md. Serajul Haque Faizi ◽  
Ashraf Mashrai ◽  
M. Shahid ◽  
Musheer Ahmad
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Layered Structure ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Compound C ◽  
Centroid Distance ◽  
Phenyl Rings ◽  
A Chain

The title compound, C16H14N4, is non-planar with dihedral angles between the planes of the imidazole and phenylenediamine rings of 30.66 (4)° and between the planes of the phenylenediamine andN-phenyl rings of 56.63 (7)°. In the crystal, molecules are connected by N—H...N hydrogen bonds, generating a chain extending along theb-axis direction. The crystal structure is also stabilized by C—H...π interactions betweenN-phenyl and imidazole rings and slipped π–π stacking interactions between imidazole rings [centroid–centroid distance = 3.516 (4) Å] giving an overall two-dimensional layered structure lying parallel to (010).

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