scholarly journals Crystal Structure of Tetrabutylammonium Chloride Complex with Rac-1,1′-bi-2-naphthol: The Inclusion of Surfactant Molecules by Hydrogen Bonded Binaphthol Molecules

2021 ◽  
Vol 37 (0) ◽  
pp. 27-28
Author(s):  
Emmanuel MARFO-OWUSU ◽  
Amber L. THOMPSON
Keyword(s):  
Crystal Structure ◽  
Chloride Complex ◽  
Tetrabutylammonium Chloride ◽  
Hydrogen Bonded

scholarly journals Synthesis and crystal structure of a disubstituted nickel(II) bis[(dimethylaminophenylimino)ethyl]pyridine chloride complex

2017 ◽  
Vol 73 (8) ◽  
pp. 1167-1171 ◽  
Author(s):  
Morgan Matthews ◽  
Madison Sendzik ◽  
Adrienne Bruggeman ◽  
Claire Kearns ◽  
Allen G. Oliver ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Pyridine Ring ◽  
Phenyl Group ◽  
Chloride Complex ◽  
The Other ◽  
Water Molecules ◽  
Asymmetric Unit ◽  
Synthesis And Crystal Structure ◽  
Solvent Molecules ◽  
Hydrogen Bonded

The solvated title compound, bis[2,6-bis(1-{[4-(dimethylamino)phenyl]imino-κN}ethyl)pyridine-κN]nickel(II) dichloride–dichloromethane–water (1/2/2), [Ni(C25H29N5)2]Cl2·2CH2Cl2·2H2O, represents a nickel(II) bis(pyridine diimine) complex with electron-donating dimethylaminophenyl substituents. The complex crystallizes as a water/dichloromethane solvate with Z′ = 2, thus the asymmetric unit consists of two NiII complex cations, four chloride anions, four adventitious water and four dichloromethane solvent molecules. Around each octahedrally coordinated NiII cation, one pendant phenyl group on each of the two ligands has an intramolecular π–π interaction with the pyridine ring of the other chelating ligand. In the crystal, pairs of water molecules are hydrogen bonded to pairs of chlorine atoms. The dichloromethane solvent molecules are likewise hydrogen bonded to the chloride anions.

Crystal Structure of Diphenyl Pyraline Hydrochloride-Cobalt Chloride Complex

1994 ◽  
Vol 250 (1) ◽  
pp. 285-291
Author(s):  
M. A. Sridhar ◽  
A. Indira ◽  
S. B. Bellad ◽  
A. M. Babu ◽  
M. M. M. Abdoh ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Cobalt Chloride ◽  
Chloride Complex

Design, Synthesis, Crystal Structure, and Host−Guest Properties of Polymethylene-Bridged Cystine-Based Cyclobisamides:  A Facile Entry into Hydrogen-Bonded Peptide Nanotubes†

1999 ◽  
Vol 64 (25) ◽  
pp. 9230-9240 ◽  
Author(s):  
Darshan Ranganathan ◽  
V. Haridas ◽  
C. Sivakama Sundari ◽  
D. Balasubramanian ◽  
K. P. Madhusudanan ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Design Synthesis ◽  
Peptide Nanotubes ◽  
Hydrogen Bonded

scholarly journals Unusual co-crystal of isonicotinamide: the structural landscape in crystal engineering

2012 ◽  
Vol 370 (1969) ◽  
pp. 2900-2915 ◽  
Author(s):  
Srinu Tothadi ◽  
Gautam R. Desiraju
Keyword(s):  
Crystal Structure ◽  
Crystal Structures ◽  
Crystal Engineering ◽  
Organic Molecule ◽  
Reference Molecule ◽  
Hydrogen Bonded

The idea of a structural landscape is based on the fact that a large number of crystal structures can be associated with a particular organic molecule. Taken together, all these structures constitute the landscape. The landscape includes polymorphs, pseudopolymorphs and solvates. Under certain circumstances, it may also include multi-component crystals (or co-crystals) that contain the reference molecule as one of the components. Under still other circumstances, the landscape may include the crystal structures of molecules that are closely related to the reference molecule. The idea of a landscape is to facilitate the understanding of the process of crystallization. It includes all minima that can, in principle, be accessed by the molecule in question as it traverses the path from solution to the crystal. Isonicotinamide is a molecule that is known to form many co-crystals. We report here a 2:1 co-crystal of this amide with 3,5-dinitrobenzoic acid, wherein an unusual N−H⋯N hydrogen-bonded pattern is observed. This crystal structure offers some hints about the recognition processes between molecules that might be implicated during crystallization. Also included is a review of other recent results that illustrate the concept of the structural landscape.

Absolute configuration determination of theanti-head-to-head photocyclodimer of anthracene-2-carboxylic acid through cocrystallization withL-prolinol

2013 ◽  
Vol 69 (11) ◽  
pp. 1411-1413 ◽  
Author(s):  
Yuko Kawanami ◽  
Hidekazu Tanaka ◽  
Jun-ichi Mizoguchi ◽  
Nobuko Kanehisa ◽  
Gaku Fukuhara ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Circular Dichroism ◽  
Carboxylic Acid ◽  
Absolute Configuration ◽  
Void Space ◽  
Circular Dichroism Spectra ◽  
The Absolute ◽  
Circular Dichroïsm ◽  
Hydrogen Bonded

The absolute configuration has been established of the enantiopureanti-head-to-head cyclodimer of anthracene-2-carboxylic acid (AC) cocrystallized with L-propinol and dichloromethane [systematic name: (S)-2-(hydroxymethyl)pyrrolidin-1-ium (5R,6S,11R,12S)-8-carboxy-5,6,11,12-tetrahydro-5,12:6,11-bis([1,2]benzeno)dibenzo[a,e][8]annulene-2-carboxylate dichloromethane monosolvate], C5H12NO+·C30H19O4−·CH2Cl2. In the crystal structure, the AC dimer interacts with L-prolinol through a nine-membered hydrogen-bonded ring [R22(9)], while the dichloromethane molecule is incorporated to fill the void space. The absolute configuration determined in this study verifies a recent assignment made by comparing theoreticalversusexperimental circular dichroism spectra.

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