화학공학소재연구정보센터
Inorganic Chemistry, Vol.42, No.4, 932-934, 2003
Perfluoroalkyl-substituted triazapentadienes and their metal complexes
Triazapentadienides, C3F7-C(=NR)-N=C(NHR)-C3F7, result from the reaction of primary amines RNH2 with the fluorinated imine C3F7-CF=N-C4F9. The aniline derivative (R = Ph) is a weak monoprotic acid in dmso. Its conjugate base exhibits an extensive coordination chemistry. It acts as a bidentate ligand toward the molecular fragments Pd(C3H5), Rh(c-C8H12), Ir(C-C8H12), and Rh-(CO)(2). The chelates [C3F7-C(NPh)-N-C(NPh)-C3F7](2)M, M = Mg, Mn, Fe, Co, Ni, Cu, Zn, and Pd, were prepared. In the crystallographically characterized Co complex, the metal is 3d(7), S = 3/2 and tetrahedrally coordinated. Spin densities at carbon in the C6H5 and C3F7 groups were estimated from the H-1 and F-19 contact shifts. Spin delocalization onto phenyl sp(2) carbons is similar to10 times greater than onto the fluorinated sp(3) carbons.