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 [Cu(dipicolinoylamide)(NO3)(H2O)] as anti-COVID-19 and antibacterial drug candidate: Design, Synthesis, Crystal Structure, DFT and Molecular Docking

2021 ◽  
pp. 131348
Author(s):  
Laila H. Abdel-Rahman ◽  
Maram T. Basha ◽  
Badriah Saad Al-Farhan ◽  
Mohamed R. Shehata ◽  
Shaaban K. Mohamed ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Molecular Docking ◽  
Drug Candidate ◽  
Antibacterial Drug ◽  
Design Synthesis

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.

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