Crystal structure of 8-Hydroxy-1H-naphtho[2,1,8-mna]xanthen-1-one

Abstract

The crystal structure of 8-hydroxy-1H-naphtho[2,1,8-mna]xanthen-1-one, C₁₉H₁₀O₃, obtained as an indefinite methanolsolvate, has been determined at 295K by single-crystal X-ray diffraction methods, being refined by full matrix least squares to a residual of 0.056 for 892 independent 'observed' reflections. Crystals are monoclinic, P2₁/c, a 5.128(4), b 10.024(9), c 27.45(2) Å, β 107.73(6)º, Z 4. The packing of the molecules is typically that of charge-transfer complexes, with an interplanar spacing of c.3.5 Å.