2,2′,2′′,2′′′-(3,6-Dioxaoctane-1,8-diyldinitrilo)tetrabenzimidazolium tetrakis(perchlorate) dihydrate

2007 ◽  
Vol 63 (11) ◽  
pp. o4334-o4335
Author(s):  
Chun-Shan Zhou ◽  
Ya-Mei Pei ◽  
Xiang-Gao Meng
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Noncovalent Interactions ◽  
Imidazole Ring ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Stacking

In the title crystal structure, C38H44N10O2 4+·4ClO4 −·2H2O, components are linked into a two-dimensional framework by a combination of N—H...O, C—H...O, O—H...O and N—H...N hydrogen bonds. In addition, weak π–π stacking interactions and anion–π noncovalent interactions between perchlorate anions and heteroaromatic imidazole rings [O...Cg = 3.328 (10) and 3.386 (11) Å; Cg is the centroid of an imidazole ring] consolidate the crystal structure.

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.

Succinimidyl 7-(diethylamino)-2-oxo-2H-chromene-3-carboxylate chloroform solvate

2006 ◽  
Vol 62 (7) ◽  
pp. o3079-o3081
Author(s):  
Ghasem Rezanejade Bardajee ◽  
Mitchell A. Winnik ◽  
Alan J. Lough
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Stacking

In the title molecular structure, C18H18N2O6·CHCl3, the dihedral angle between the two fused, essentially planar, six-membered rings is 5.4 (2)°. In the crystal structure, weak intermolecular C—H...O hydrogen bonds and π–π stacking interactions connect molecules into two-dimensional layers.

scholarly journals Crystal structure of bis(μ-N-hydroxypicolinamidato)bis[bis(N-hydroxypicolinamide)sodium]

2017 ◽  
Vol 73 (1) ◽  
pp. 24-27 ◽  
Author(s):  
Inna S. Safyanova ◽  
Kateryna A. Ohui ◽  
Irina V. Omelchenko
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Coordination Polyhedron ◽  
Title Compound ◽  
Sodium Ion ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Stacking

The title compound, [Na2(C6H5N2O2)2(C6H6N2O2)4], is a centrosymmetric coordination dimer based on the sodium(I) salt ofN-hydroxypicolinamide. The molecule has an {Na2O6(μ-O)2} core with two bridging carbonyl O atoms and two hydroxamate O atoms of two mono-deprotonated residues ofN-hydroxypicolinamide, while two neutralN-hydroxypicolinamide molecules are coordinated in a monodentate manner to each sodium ionviathe carbonyl O atoms [the Na—O distances range from 2.3044 (2) to 2.3716 (2) Å]. The pentacoordinated sodium ion exhibits a distorted trigonal–pyramidal coordination polyhedron. In the crystal, the coordination dimers are linked into chains along thecaxisviaN—H...O and N—H...N hydrogen bonds; the chains are linked into a two-dimensional framework parallel to (100)viaweak C—H...O and π–π stacking interactions.

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 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.

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 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 Noncovalent Interactions between 1,3,5-Trifluoro-2,4,6-triiodobenzene and a Series of 1,10-Phenanthroline Derivatives: A Combined Theoretical and Experimental Study

Crystals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 140 ◽  
Author(s):  
Yu Zhang ◽  
Jian-Ge Wang ◽  
Weizhou Wang
Keyword(s):  
Crystal Structure ◽  
Crystal Structures ◽  
Quantum Chemical ◽  
Halogen Bond ◽  
Noncovalent Interactions ◽  
Stacking Interactions ◽  
Halogen Bonds ◽  
Π Stacking ◽  
Π Stacking Interaction ◽  
Structural Competition

How many strong C−I⋯N halogen bonds can one 1,3,5-trifluoro-2,4,6-triiodobenzene molecule form in a crystal structure? To answer this question, we investigated in detail the noncovalent interactions between 1,3,5-trifluoro-2,4,6-triiodobenzene and a series of 1,10-phenanthroline derivatives by employing a combined theoretical and experimental method. The results of the quantum chemical calculations and crystallographic experiments clearly show that there is a structural competition between a C−I⋯N halogen bond and π⋯π stacking interaction. For example, when there are much stronger π⋯π stacking interactions between two 1,10-phenanthroline derivative molecules or between two 1,3,5-trifluoro-2,4,6-triiodobenzene molecules in the crystal structures, then one 1,3,5-trifluoro-2,4,6-triiodobenzene molecule forms only one C−I⋯N halogen bond with one 1,10-phenanthroline derivative molecule. Another example is when π⋯π stacking interactions in the crystal structures are not much stronger, one 1,3,5-trifluoro-2,4,6-triiodobenzene molecule can form two C−I⋯N halogen bonds with two 1,10-phenanthroline derivative molecules.

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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