A spectroscopic and photophysical study on molecular recognition via hydrogen-bonding and π–π stacking interactions

2005 ◽  
Vol 4 (1) ◽  
pp. 135-142 ◽  
Author(s):  
Noboru Kitamura ◽  
Yusuke Suzuki ◽  
Shoji Ishizaka
Keyword(s):  
Hydrogen Bonding ◽  
Molecular Recognition ◽  
Stacking Interactions ◽  
Π Stacking ◽  
Photophysical Study

Recognition of a Flavin Analogue by Novel Bile Acid-Based Receptors: Effects of Hydrogen Bonding and Aromatic π-Stacking Interactions

2017 ◽  
Vol 70 (12) ◽  
pp. 1263 ◽  
Author(s):  
Pradeep Kumar Muwal ◽  
Rajesh Kumar Chhatra ◽  
Shubhajit Das ◽  
Pramod S. Pandey
Keyword(s):  
Hydrogen Bonding ◽  
Bile Acid ◽  
Molecular Recognition ◽  
Stacking Interactions ◽  
Hydrogen Bonding Interactions ◽  
Π Stacking ◽  
Fused Ring ◽  
Bile Acid Receptors ◽  
Binding Behaviour

Molecular recognition properties are reported for novel bile acid-based receptors that incorporate 2,6-diaminopyridine as a recognition unit. Apart from hydrogen-bonding interactions, the bile acid receptors exhibit significant aromatic π-stacking interactions with the aromatic fused ring of the flavin derivative. These studies provide rationalisation for the differences in binding behaviour of bile acid receptors having differing aromatic arm lengths towards a flavin analogue.

3-n-Butyl-2-methoxy-1-benzothieno[3,2-d]pyrimidin-4(3H)-one

2006 ◽  
Vol 62 (4) ◽  
pp. o1319-o1320 ◽  
Author(s):  
Min-Hui Cao ◽  
Sheng-Zhen Xu ◽  
Yang-Gen Hu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Benzene Ring ◽  
Title Compound ◽  
Thiophene Ring ◽  
Stacking Interactions ◽  
Asymmetric Unit ◽  
Compound C ◽  
Π Stacking ◽  
Independent Molecules

The title compound, C15H16N2O2S, contains a five-membered thiophene ring fused to a benzene ring and a substituted pyrimidinone ring. All three rings in each of the independent molecules of the asymmetric unit lie in approximately the same plane. The crystal structure is stabilized by intermolecular C—H...O hydrogen bonding and π–π stacking interactions.

Supramolecular structures of N 4-substituted 2,4-diamino-6-benzyloxy-5-nitrosopyrimidines

2003 ◽  
Vol 59 (2) ◽  
pp. 263-276 ◽  
Author(s):  
Manuel Melguizo ◽  
Antonio Quesada ◽  
John N. Low ◽  
Christopher Glidewell
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Intermolecular Interactions ◽  
Electronic Structures ◽  
Supramolecular Structure ◽  
Supramolecular Structures ◽  
Stacking Interactions ◽  
Molecular Electronic ◽  
Π Stacking

The molecular and supramolecular structures of eight N 4-substituted 2,4-diamino-6-benzyloxy-5-nitrosopyrimidines are discussed, along with one analogue containing no nitroso substituent. The nitroso derivatives all exhibit polarized molecular-electronic structures leading to extensive charge-assisted hydrogen bonding between the molecules. The intermolecular interactions include hard hydrogen bonds of N—H...O and N—H...N types, together with O—H...O and O—H...N types in the monohydrate of 2-amino-6-benzyloxy-4-piperidino-5-nitrosopyrimidine, soft hydrogen bonds of C—H...O, C—H...π(arene) and N—H...π(arene) types and aromatic π...π stacking interactions. The predominant supramolecular structure types take the form of chains and sheets, but no two of the structures determined here exhibit the same combination of hydrogen-bond types.

Diphenylcarbonohydrazide–phenylsemicarbazide (1/1)

2006 ◽  
Vol 62 (5) ◽  
pp. o1719-o1721
Author(s):  
Chun-Xia Wei ◽  
Jian-Xin Chen ◽  
Zhong-Shui Li ◽  
Ting-Yan Lan ◽  
Yuan-Biao Huang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Stacking Interactions ◽  
Compound C ◽  
Π Stacking

In the title compound, C13H14N4O·C7H9N3O, a phenylcarbonohydrazide molecule cocrystallizes with a phenylsemicarbazide molecule. In the crystal structure, extensive hydrogen-bonding and π–π stacking interactions stabilize the structure.

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