Concomitant but disappearing: two polymorphs of 1, 4-bis (tribromomethyl) benzene

…, H Hopf, A Silaghi, C Naether

文献索引：Jones, Peter G.; Hopf, Henning; Silaghi, Anamaria; Naether, Christian Acta Crystallographica Section C: Crystal Structure Communications, 2011 , vol. 67, # 10 p. o405-o408

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被引用次数: 3

摘要

The title compound, C8H4Br6,(I), initially crystallized from deuterochloroform as the comcomitant polymorphs (Ia)(prisms, space group P21/n, Z= 2) and (Ib)(hexagonal plates, space group C2/c, Z= 4). The molecules in both forms display crystallographic inversion symmetry. All further attempts to crystallize the compound led exclusively to (Ib), so that (Ia) may be regarded as adisappearing polymorph'. Surprisingly, however, the density of (Ia) ...