T. Nemoto et al., 8-CHLORO-1,4-DIMETHYL-9-(2-METHYLBENZYL)TRIPTYCENE AND 8-CHLORO-1,4-DIMETHYL-9-(2-METHYLBENZYL)TRIPTYCENE, Acta crystallographica. Section C, Crystal structure communications, 52, 1996, pp. 716-720
Two atropisomers, ap and sc(9S*), of the title compound thylbenzyl)-9
,10-dihydro-9,10-o-benzenoanthracene, C30H25Cl] have been isolated and
their structures determined by X-ray diffraction. The structures of t
he two isomers are essentially the same as those of the analogous brom
o derivatives. The crystal of the sc(9S*) isomer decomposed when it w
as heated to 493 K, owing to the sc-ap transition.