A very long carbon–carbon bond in a cyclopropane derivative
Abstract
An X-ray crystal structure determination of 11,11-dimethyltricyclo[4,4,1,01,6]undeca-2,4,7,9-tetraene shows a C(I)–C(6) bond distance of ca. 1·80 Å; the molecular geometry corresponds to a non-aromatic compound with a bisnorcaradiene structure.