Hydroalumination of H2C=CHCH2SMe: Synthesis and molecular structure of (Bu-t)(2)Al(CH2CH2CH2SMe)

Hydroalumination of H2C=CHCH2SMe with [(Bu-t)(2)Al(mu-H)](3) yields the mon omeric thioether compound (Bu-t)(2)Al(CH2CH2CH2SMe). The molecular structur e of (Bu-t)(2) Al(CH2CH2CH2SMe) consists of discreet monomers in which the thioether-alkyl ligand acts as a chelate ligand with an Al-S interaction [2 .511(2) Angstrom] that is significantly shorter than observed for other int ra-molecular coordination compounds, 2.78-2.95 Angstrom. The coordination a bout aluminum is highly distorted from tetrahedral and is therefore best de scribed as capped trigonal planar or trigonal bipyramidal with a vacant coo rdination site. Crystal data: monoclinic, P2(1)/n (No. 14), a = 6.6357(5), b = 13.630(1), c = 16.959(1) Angstrom, beta = 95.416(6)degrees, V = 1527.0( 2) Angstrom(3), Z = 4, R = 0.0412, R-w = 0.0503.