Crystal structures of (12 E)-12-(4-benzyl-idene)-7,7,16-trimethyl-3-(4-methyl-phen-yl)-1-oxa-16-aza-tetra-cyclo-[11.2.1.02,11.04,9]hexa-deca-2(11),4(9)-dien-5-one and (12 E)-12-(4-bromo-benzyl-idene)-73-(4-bromo-phen-yl)-,7,16-trimethyl-10-oxa-16-aza-tetra-cyclo-[11.2.1.02,11.04,9]hexa-deca-2(11),4(9)-dien-5-one
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The title compounds, C32H35NO2, (I), and C30H29Br2NO2, (II), differ by the presence of a bromine atom instead of a methyl atom in the para position of two benzene rings of compound (II). The two compounds have a structural overlap r.m.s. deviation of 0.27 Å. ... ...
