A New Way of Stabilization of Furosemide upon Cryogenic Grinding by Using Acylated Saccharides Matrices. The Role of Hydrogen Bonds in Decomposition Mechanism

2013 ◽  
Vol 10 (5) ◽  
pp. 1824-1835 ◽  
Author(s):  
E. Kaminska ◽  
K. Adrjanowicz ◽  
K. Kaminski ◽  
P. Wlodarczyk ◽  
L. Hawelek ◽  
...  



2021 ◽  
Vol 11 (1) ◽  
pp. 127-134
Author(s):  
Nhung Ngo Thi Hong ◽  
Huong Dau Thi Thu ◽  
Trung Nguyen Tien

Nine stable structures of complexes formed by interaction of guanine with thymine were located on potential energy surface at B3LYP/6-311++G(2d,2p). The complexes are quite stable with interaction energy from -5,8 to -17,7 kcal.mol-1. Strength of complexes are contributed by hydrogen bonds, in which a pivotal role of N−H×××O/N overcoming C−H×××O/N hydrogen bond, up to to 3.5 times, determines stabilization of complexes investigated. It is found that polarity of N/C−H covalent bond over proton affinity of N/O site governs stability of hydrogen bond in the complexes. The obtained results show that the N/C−H×××O/N red-shifting hydrogen bonds occur in all complexes, and a larger magnitude of an elongation of N−H compared C-H bond length accompanied by a decrease of its stretching frequency is detected in the N/C−H×××O/N hydrogen bond upon complexation. The SAPT2+ analysis indicates the substantial contribution of attractive electrostatic energy versus the induction and dispersion terms in stabilizing the complexes.



Langmuir ◽  
2018 ◽  
Vol 34 (44) ◽  
pp. 13449-13458 ◽  
Author(s):  
Zhongyang Dai ◽  
Lili Shi ◽  
Linghong Lu ◽  
Yunhao Sun ◽  
Xiaohua Lu


2007 ◽  
Vol 111 (45) ◽  
pp. 11400-11409 ◽  
Author(s):  
Irina Petkova ◽  
Maria S. Mudadu ◽  
Ajay Singh ◽  
Randolph P. Thummel ◽  
Ivo H. M. van Stokkum ◽  
...  




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