Crystal and molecular structure of N-ethyl-1,8-naphthalimide

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Abstract
The crystal structure of N-ethyl-1,8-naphthalimide, (C 14 H 11 NO 2 ), has been determined at 180 K. The colourless compound crystallizes in the monoclinic space group C 2/ c with unit cell dimensions a = 6.932(1), b = 18.663(4), c = 16.469(2) Å, β = 98.04(1)°, Z = 8 and D x = 1.418 Mg m −3 . The structure was solved by direct-methods and refined by a full-matrix least-squares procedure on 753 reflections to final R = 0.056. The molecule is essentially planar with the exception of the terminal methyl group which lies to one side of the plane and the two methylene H atoms which lie to the other side. The crystal structure determination enables the rationalization of the chemical reactivity of this class of compound.