Synthesis of Carbodiimidotitanium Complexes by the Reaction of (Trimethylstannyl)carbodiimides with Titanium Chlorides
摘要:
Me(3)Sn-N=C=N-R(1) (R(1) = Si(i)Pr(3), SiPh(2)(t)Bu, Ph) reacts with Cp(2)TiCl(2) (Cp = eta(5)-C(5)H(5), or Cp*(2)TiCl(2) (Cp* = eta(5)-C(5)Me(5)) selectively at the Sn-N bond to give the corresponding bis(carbodiimido)titanium complexes (Cp(2)Ti(N=C=N-SiR(3))(2), Cp*(2)Ti(N=C=N-SiR(3))(2), and Cp(2)Ti(N=C=N-Ph)(2)) in moderate to high yields. The structure of Cp(2)Ti(N=C=N-Ph)(2) was determined by X-ray crystallography. Oligomeric complexes were formed by the reaction of Me(3)Sn-N=C=N-X-N=C=N-SnMe(3) (X = -C(6)H(3)Cl-CH(2)-C(6)H(3)Cl-) with Cp*(2)TiCl(2).
Me(3)Sn-N=C=N-R(1) (R(1) = Si(i)Pr(3), SiPh(2)(t)Bu, Ph) reacts with Cp(2)TiCl(2) (Cp = eta(5)-C(5)H(5), or Cp*(2)TiCl(2) (Cp* = eta(5)-C(5)Me(5)) selectively at the Sn-N bond to give the corresponding bis(carbodiimido)titanium complexes (Cp(2)Ti(N=C=N-SiR(3))(2), Cp*(2)Ti(N=C=N-SiR(3))(2), and Cp(2)Ti(N=C=N-Ph)(2)) in moderate to high yields. The structure of Cp(2)Ti(N=C=N-Ph)(2) was determined by X-ray crystallography. Oligomeric complexes were formed by the reaction of Me(3)Sn-N=C=N-X-N=C=N-SnMe(3) (X = -C(6)H(3)Cl-CH(2)-C(6)H(3)Cl-) with Cp*(2)TiCl(2).