The monomeric aluminum-magnesium bridged complex Me(2)Al[mu-N(Pr-i)(2)
]Mg-2(BHT), (BHT = 2,6-di-tert-butyl-4-methylphenoxide) with a three-c
oordinate magnesium atom was prepared. Crystal data: space group P2(1)
/n; a = 13.807(5), b = 15.636(4), and c = 14.905(3) Angstrom, beta = 9
5.03(3)degrees, V = 3205(2) Angstrom(3); D-calc = 1.038 g/cm(3), Z = 4
, and R = 0.056. Fenske-Hall molecular orbital calculations are used t
o explain the bonding situation.