MUTUAL OPTICAL RESOLUTION OF BIS-β-NAPHTHOL AND SULFOXIDES. ABSOLUTE CONFIGURATION AND CRYSTAL STRUCTURE OF A 1:1 MOLECULAR COMPLEX

Abstract

X-Ray analysis of a 1:1 complex of (R)-(+)-bis-β-naphthol with (R)-(+)-methyl m-tolyl sulfoxide has established the absolute configuration and showed that the two molecular components are alternately linked by O–H···O hydrogen bonds to form infinite zigzag chains parallel to the a axis. The bis-β-naphthol molecule adopts a cisoid conformation with a torsion angle of −78,2(2)° about the C–C bond joining the aromatic rings.