Journal of Molecular Structure
Journal of Molecular Structure
5 years ago

Solvatochromic studies on 4-Bromomethyl-7-methyl coumarins

Solvatochromic studies on 4-Bromomethyl-7-methyl coumarins
Non- and dinitro 4-bromomethyl-7-methyl coumarins and new mono- and trinitro 4-bromomethyl-7-methyl coumarins have been synthesized. Effect of nitro groups on the photophysical properties of the parent 4-bromomethyl-7-methyl coumarin has been reported. Their ground and excited state dipole moments have been estimated by solvatochromic method using nine solvents. A reasonable agreement has been observed between calculated and observed dipole moments. Reduction in dipole moment has been observed for mono- and dinitro compounds where as the trinitro compound was found to have higher dipole moment in the excited state.

Publisher URL: www.sciencedirect.com/science

DOI: S0022286018301091

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