Diethyl [(9-anthr-yl)(4-methyl-anilino)meth-yl]phospho-nate. 2011

Ivanka Kraicheva, and Ivelina Tsacheva, and Elitsa Vodenicharova, and Emil Tashev, and Kolio Troev
Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl. 103A, 1113 Sofia, Bulgaria.

The title compound, C(26)H(28)NO(3)P, crystallized with two independent mol-ecules in the asymmetric unit. The structural features (bond lengths and angles) of the two mol-ecules are almost identical. The inter-planar angle between the anthracene and toluidine rings is similar in the two mol-ecules, with values of 82.92 (5) and 80.70 (5)°. In the crystal, both molecules form inversion dimers linked by pairs of N-H⋯O hydrogen bonds. Three of the four ethyl groups are disordered over two sets of sites, the major components having occupancies of 0.748 (15), 0.77 (4) and 0.518 (19).

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