Di-μ-pyridyl-1:2κ 2 N : C 2 ;2:1κ 2 N : C 2 -μ-tetrahydrofuran-κ 2 O : O -bis[bromo(tetrahydrofuran)magnesium(II)] tetrahydrofuran hemisolvate - Churakov, Andrei V.; Krut'ko, Dmitry P.; Borzov, Maxim V.; Kirsanov, Roman S.; Belov, Sergei A.; Howard, Judith A. K. (Acta crystallographica. Section E, Structure reports online, 2006)