A quantum chemical insight to intermolecular hydrogen bonding interaction between cytosine and nitrosamine: Structural and energetic investigations

2016 ◽  
Vol 1107 ◽  
pp. 162-173 ◽  
Author(s):  
Behzad Khalili
IUCrData ◽  
2021 ◽  
Vol 6 (7) ◽  
Author(s):  
Elvin V. Salerno ◽  
Lava R. Kadel ◽  
David M. Eichhorn

The synthesis and structure is reported of TpPh,4CNNi(NO3)(EtOH) or [Ni(C30H19BN9)(NO3)(C2H6O)], the first half-sandwich complex of a cyanoscorpionate ligand. The pseudooctahedral coordination sphere of the NiII ion is comprised of a tridentate tris(4-cyano-3-phenylpyrazolyl)borate ligand, a bidentate nitrate ligand and a neutral ethanol ligand. The phenyl substituents on the TpPh,4CN ligand are relatively parallel to the planes of the ethanol and nitrate ligands. An intermolecular hydrogen-bonding interaction is evident between the ethanol OH group and the pyrazole CN substituent. The ethanol ligand was modeled with a 0.572 (13)/0.428 (13) disorder of the methyl C atom.


2011 ◽  
Vol 356-360 ◽  
pp. 48-51
Author(s):  
Qi Tong ◽  
Ti Feng Jiao

In order to investigate the intermolecular hydrogen bonding of special amphiphiles, two bolaform amphiphilic Schiff bases (GN1 and GN2) with different hydrophilic spacers were designed, and their interaction with barbituric acid were tested by liquid chromatography. The chromatographic properties showed that both the Schiff bases showed hydrogen bonding interaction with barbituric acid. In addition, the influence of various detectors was also studied on both cases. Experimental results show that the test with FLD showed better determination than other detectors. It is proposed that due to the directionality and strong matching of hydrogen bond, one barbituric acid molecule can be encapsulated into the intramolecular area of GN1, while two barbituric acid molecules were trapped into the GN2 molecule through intermolecular H-bonds for GN2 due to the long spacer and flexible structure. A rational complex mode was proposed.


2012 ◽  
Vol 236-237 ◽  
pp. 801-805
Author(s):  
Ti Feng Jiao ◽  
Qi Tong ◽  
Jian Liu

In order to investigate the intermolecular hydrogen bonding of special amphiphiles, a series of bolaform amphiphilic Schiff bases (abbreviated as SCn) with different hydrophobic spacers were designed, and their interaction with barbituric acid were tested by spectra and liquid chromatography. The chromatographic properties showed that all the Schiff bases showed hydrogen bonding interaction with barbituric acid. In addition, the influence of various detectors was also studied on both cases. Experimental results show that the test with VWD detector showed better determination than FLD detector.


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