Al. Papet et al., SYNTHESIS, THEORETICAL, CONFORMATIONAL STUDY AND X-RAY STRUCTURE OF 2,2'-DIMETHYL-6,6'-DIPHENYL-4,4'-BIPYRIMIDE, New journal of chemistry, 17(3), 1993, pp. 181-185
The synthesis of 2,2'-dimethyl-6,6'-diphenyl-4,4' -bipyrimidine is des
cribed. In the Solid state the molecule is centrosymmetric and is thus
in the s-trans conformation. A semi-empirical calculation shows that,
irrespective of the medium, the molecule conserves this preferential
conformation.