M. Baron et al., CONFORMATIONAL PREFERENCE OF BR AND CN IN CYCLOHEXANE DERIVATIVES, Anales de la Asociacion Quimica Argentina, 82(3), 1994, pp. 155-160
Crystallographic studies, theoretical calculations and ir spectra prov
ide evidence that, in 1,4-bisdisubstituted cyclohexanes, the CN group
can be equatorial or axial depending on the geminal substituent.