Crystal and molecular structure of Bi-1,1′-(3,3-dimethyl-3,4- dihydroisoquinoline)

Bi-1,1′-(3,3-dimethyl-3,4-dihydroisoquinoline) (I) was synthesized. Its crystal structure was determined by X-ray diffraction analysis. Compound I crystallizes as isomer that is intermediate between the synand anti-forms with the angle of rotation between the bicyclic fragments equal to 90.1°. The N(1)=C(1) bond length is 1.276(4) ± 0.003 Å.