
TY  - JOUR
A1  - Engelhardt, LM 
A1  - Leung, W 
A1  - Raston, CL 
A1  - White, AH 
T1  - Preparation and Structure of <i>trans</i>-Dibromotetrakis(5,7-dihydrodibenz-[c,e]oxepin)magnesium(II)-Toluene (1/2) Solvate
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1985
VL  - 38
IS  - 6
SP  - 977
EP  - 983
KW  - 
UR  - https://doi.org/10.1071/CH9850977 
N2  - The title compound, trans-[Br2Mg{O(2-CH2C6H4)2}4], prepared from MgBr2 and 5,7-dihydrodibenz-[ c,e ] oxepin , has been structurally characterized by using single-crystal X-ray methods at 295 K, being refined by least squares to a residual of 0.058 for 2747 'observed' reflections. Crystals are monoclinic, C2/c, a 16.454(6), b 19.489(7), c 17.812(6) &#506;, &#946; 96.01(3)&#176;, Z 4. The molecule lies disposed on a crystallographic twofold axis which bisects two of the ligands and passes through the magnesium. Mg-Br are 2.623(1) &#506;; Mg-O are 2.152(7), 2.183(7) and 2.127(4) &#506; (&#215; 2). Mean torsion angles about the bonds between the two phenyl rings of each ligands are 37.8, 38.0 and 39.3&#176;. 
ER  -

