Shuntaro Mataka, Tsuyoshi Sawada, Masahi Tashiro, Masahiko Taniguchi and Yoshiharu Mitroma
Conformational behaviour of dibenzo[c,h]bicyclo[4.4.1]undecanes having a dichloro- and a dibromo-cyclopropane ring, together with an oxirane ring on the methylene bridge, has been studied by 1H NMR spectroscopy and X-ray crystallography.