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RISTautomerism, molecular structure, intramolecular hydrogen bond, and enol-enol equilibrium of para halo substituted 4,4,4-trifluoro-1- phenyl-1,3-butanedione; Experimental and theoretical studies
سال: 2017
خلاصه:
Para halo, X = F, Cl, and Br, substitution effect on tautomerism, keto-enol content, molecular structure, intramolecular hydrogen bonding, and enol-enol equilibrium constants of 4,4,4-trifluoro-1-phenyl-1,3-butanedione, ...
Tautomerization and intramolecular hydrogen bond strength of 1-(4- Chlorophenyl)-4,4,4-trifluorobutane-1,3-dione by quantum calculations and experimental spectroscopy
سال: 2017
خلاصه:
Two stable cis-enol forms can be drawn for p-Cl-TFBA and TFBA,
the structure and their relative stabilities, calculated at B3LYP/6-311++G** level of theory, are
show in Fig.1. The relative stabilities for the ...
Molecular structure and intramolecular hydrogen bond strength of 3-methyl-4-amino-3-penten-2-one and its NMe and N-Ph substitutions by experimental and theoretical methods
سال: 2019
خلاصه:
In the present work, molecular structures and intramolecular hydrogen bonding -IHB- of 3-methyl-4-amino-3-penten-2-one, 3-MeAPO, 3-methyl-4-methylamino-3-penten-2-one, 3-Me-MeAPO, and the 3-methyl-4-phenylamino-3-penten-2-one, ...
Latent Semantic Association for Medical Image Retrieval
ناشر: IEEE
سال: 2014
Submillimeter-Wave Radar: Solid-State System Design and Applications
ناشر: IEEE
سال: 2014