Spectre hertzien et changements de phases de quelques composés substitués en 1 du tétraméthyl-2,3,5,6 benzène (durène)

Iododurene

“…Contrary to chlorodurene the title iododurene in the solid phase has a quite low permeability equal to only 2.6, which changes abruptly at fusion to a value of ca. 4 (Balcou et al, 1965). We report herein on its crystal structure.…”

“…For the crystal structure of bromodurene, see: Charbonneau et al (1964Charbonneau et al ( , 1965. For the physical properties of monohalogenated derivatives of durene, see: Balcou et al (1965). For standard bond lengths in similar compounds, see: Allen (2002); Hope et al (1970).…”

“…Moreover, at room temperature iododurene and the isotypic product bromodurene (Charbonneau et al, 1964(Charbonneau et al, , 1965 crystallize in the same orthorhombic space group with fixed orientations of the dipolar grouping not presenting dielectric dispersion. This fact could be interpreted by the importance of the distribution of the masses of the substituents, that inhibit the possibility of molecular reorientation like in chlorodurene (Balcou et al, 1965).…”