(C6H5)CH=NR (R = C6H5, i-C3H7) and the Ti(C5H5)(2,4-C7H11) Fragment (C7H11 = dimethylpentadienyl)

The reactions of imines of the formula (C6H5)CH=NR (R = C6H5, i-C3H7) with Ti(C5H5)(2,4-C7H11)(PMe3) (C7H11 = dimethylpentadienyl) lead to expulsion of the PMe3 and coupling between the imine's carbon atom and a single terminus of the 2,4-C7H11 ligand, resulting inC(5)H(5), "diene," and p-amide coordination in the 16 electron products. Examination of the Ti-C and C-C bonding parameters for the "diene" ligands reveals that they may be more appropriately regarded as enediyl ligands, leading to a formal +4 oxidation state for titanium. Both complexes crystallize in the triclinic space group P (1) over bar. For the R = C6H5 coupling product, a = 10.4590(2) angstrom, b = 11.6407(2) angstrom, c = 17.3729(3) A, alpha = 74.7610(7)degrees, beta = 79.8600(6)degrees, gamma = 82.2895(11)degrees, V = 2000.28(6) angstrom(3), D-calc = 1.293 g/cm(3) at 150(1) K. For the R = i-C(3)H7 coupling product, alpha = 8.1039(2) angstrom, beta = 9.4115(2) angstrom, c = 13.0116(4) angstrom, alpha = 88.9906(18)degrees, beta = 73.2780(15)degrees, gamma = 83.3088(16)degrees, V = 943.82(4) angstrom(3), D-calc = 1.250 g/cm(3) at 150(1) K.