INSERTION REACTIONS OF ISOCYANATES, ISOTHIOCYANATES, AND CARBON-DISULFIDE INTO MG-C BONDS OF POLYNUCLEAR ALUMINUM-MAGNESIUM COMPOUNDS - SYNTHESIS, CHARACTERIZATION, AND CRYSTAL-STRUCTURES

A number of insertion products, viz., Me2Al(mu-i-Pr2N)(2)Mg[(t-Bu)NC(C H3)S] (1), Me2Al(mu-i-Pr2N)(2)Mg[(Ph)NC(CH3)S)] (2), Me2Al((mu-Et2N)(2 )Mg[(t-Bu)NC(CH3)S] (3), Me2Al(mu-Et2N)(2)Mg[(Ph)NC(CH3)S] (4), {Me2Al (mu-Et2N)(2)Mg[(Ph)NC(CH3)O]}(2) (5), and Me2Al(mu-i-Pr2N)(2)Mg[SC(CH3 )S] (6) have been synthesized using polynuclear aluminum-magnesium com pounds and various heteroannulenes such as isothiocyanates, isocyanate s, and carbon disulfide. All the new compounds were characterized by H -1 and C-13 NMR, LR, and elemental analysis. The structures of two of the above compounds, 1 and 5, have been determined by single-crystal X -ray diffraction technique.