The crystal structure of solvate HgBr₂ • C₄H₈O has been determined from the intensities of 590 reflexions (hk0 to hk3). They had been registered with a Weissenberg camera. The final R factor is 0.096. The structure consists of groups in which HgBr₂ chains parallel to c are linked to tetrahydrofuran rings by Hg…O = 2.67 Å. HgBr₂ molecules are slightly bent (Hg-Br = 2.475 Å, Br-Hg-Br = 174°6). Mercury atoms have octahedral surroundings. The chains of strongly bonded HgBr₂ have the same structure as in pure HgBr₂.
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Frey et al. (1971) studied this question.
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