title: 2-[(E)-2-(Benzyl-idene-amino)-eth-yl]-3',6'-bis-(diethyl-amino)-spiro-[isoindoline-1,9'-xanthen]-3-one.
abstract: In the title compound, C(37)H(40)N(4)O(2), the xanthene and spiro-lactam rings are almost planar, with r.m.s. deviations from the mean planes of 0.223 (2) and 0.057 (2) Å, respectively, and form a dihedral angle of 85.76 (3)°. The dihedral angle between the xanthene mean plane and the benzene ring is 87.16 (5)°. One of the two ethyl groups of one of the diethyl-amino groups is disordered over two sets of sites [0.76 (1):0.24 (1)].
authors.affiliation: Department of Basic Science, Tianjin Agriculturial College, Tianjin Jinjing Road No. 22, Tianjin 300384, People's Republic of China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wei
authors.forename: Xujun
authors.initials: X
authors.lastname: Zheng
authors.forename: Junjun
authors.initials: J
authors.lastname: Bai
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Zhai
authors.forename: Lili
authors.initials: L
authors.lastname: Song