Abstract
In the title compound, C25H17NO4, the indolizine fused naphthaquinone unit is approximately planar [r.m.s deviation = 0.0678 Å] and makes a dihedral angle of 57.82 (5)° with the benzene ring of the methoxybenzene group. The naphthoquinone O atoms deviate, in the same sense, from the mean plane of the fused six-membered rings by 0.2001 (14) and 0.0516 (14) Å. In the crystal there is π–π stacking of inversion-related pairs of molecules [interplanar spacing = 3.514 (2) Å].
Highlights
= 0.0678 Å] and makes a dihedral angle of 57.82 (5) with the benzene ring of the methoxybenzene group
The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry
The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2
Summary
C25H17NO4, the indolizine fused naphthaquinone unit is approximately planar [r.m.s deviation. The naphthoquinone O atoms deviate, in the same sense, from the mean plane of the fused six-membered rings by 0.2001 (14) and. In the crystal there is – stacking of inversionrelated pairs of molecules [interplanar spacing = 3.514 (2) Å]. For general background to the applications and biological activity of indolizine derivatives, see: Švorc et al (2009). For the synthesis of indolizines, see: Babaev et al (2005), and for their use as intermediates in the synthesis of indolizidines, see: Kloubert et al (2012). For the crystal structures of similar compounds, see: Liu et al (2011); Ramesh et al (2009). See: Allen et al (1987)
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