This contribution reports the synthesis and activity as precatalysts for stereoselective propylene polymerization of several chiral non-C-2 symmetric zirconocene and hafnocene complexes, (R)- and (S)-Me(2)Si(Me(4)C(5))-(C(5)H(3)R*)MR(2) (R = Cl(2) or Me(3)) where R* = (1R,2S,5R)-trans-5-methyl-cis-2-(2-propyl)cyclohexyl ((-)-menthyl; M = Zr, (a) and M = Hf, (b)) and (1S,2S,5R)-trans-5 -methyl-cis-2-(2-propyl)cyclohexyl ((+)-neomenthyl; M = Zr (c)). Metallocene dichlorides were prepared from MCl(4) and Li(2)Me(2)Si(Me(4)C(5))(C(5)H(3)R*) and converted to the corresponding dimethyl complexes with MeLi . LiBr. All complexes were characterized by standard techniques, with absolute configuration established by circular dichroism and X-ray diffraction. For the (R) - R* = (-)-menthyldichloro complex (2a) : space group = P2(1)2(1)2(1); a = 9.404(2), b = 9.817(3), c = 28.684(7) Angstrom(-120 degrees C), Z = 4; R(F) = 0.056, R(w)(F) = 0.061 for 2025 reflections having I > 3 sigma(I). For the (R) - R* = (-)-menthyldimethyl complex (3a) : space group = P2(1); a = 9.501(3), b = 9.394(3), c = 15.565(3) Angstrom, beta = 103.76(2)degrees(-120 degrees C), Z = 2; R(F) = 0.037, R(w)(F) = 0.039 for 1528 reflections having I > 3 sigma(I). : space group = P2(1)2(1)2(1); a = 9.404(2), b = 9.817(3), c = 28.684(7) Angstrom(-120 degrees C), Z = 4; R(F) = 0.056, R(w)(F) = 0.061 for 2025 reflections having I > 3 sigma(I). For the (R) - R* = (-)-menthyldimethyl complex (3a) : space group = P2(1); a = 9.501(3), b = 9.394(3), c = 15.565(3) Angstrom, beta = 103.76(2)degrees(-120 degrees C), Z = 2; R(F) = 0.037, R(w)(F) = 0.039 for 1528 reflections having I > 3 sigma(I).