Acta Cryst. (2002). E58, o259-o260  [ doi:10.1107/S1600536802002283 ]

2,3,5-Trichloro-6-(2-diethylaminovinyl)-1,4-benzoquinone

A. Krivokapic and H. L. Anderson

Abstract: We report the structure of the title compound, C₁₂H₁₂Cl₃NO₂, which belongs to a group of compounds called blue quinones. It is a remarkable near-IR dye with interest for non-linear optics. It crystallized in monoclinic space group P2₁/a with one molecule in the asymmetric unit. The molecular structure is approximately planar and exhibits little bond-length alternation, indicating a high degree of charge-transfer from the amine lone pair to the quinone.

Online 8 February 2002

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