Homonuclear Multiple Bonding Involving the Heavier Main Group 3 Elements

HOMONUCLEAR MULTIPLE BONDING INVOLVING THE HEAVIER MAIN GROUP 3 ELEMENTS [Pg.7]

The new developments in homonuclear bonding described in this section for A1 - T1 have precedent in the synthesis of molecular species with boron-boron multiple bonds. In essence, it has been shown that tetraor-ganodiboron compounds38-40 can undergo two successive one-electron reductions9,41 to give multiple B—B bonds as shown by Eq. (1). [Pg.7]

This remarkable compound is stabilized by the presence of bulky substituents which prevent disproportionation and decomposition. The A1—A1 distance is 2.660(1) A and the torsion angle between the coordination planes at the aluminum atoms is near 0°. Subsequently, it was shown that the gallium (Ga—Ga = 2.541(1) A19) and indium (In—In = 2.828(1)A20) analogs could also be synthesized. More recently, the related T1—T1 bonded species (Me3Si)3Si 2TlTl Si(SiMe3)3 2 (T1—T1 distance = 2.9142(5) A) has been reported.44 [Pg.8]

Metal-Metal Bond Lengths and Torsion Angles in Structurally Characterized Tetraorganodimetallanes and Their [Pg.11]

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