Scorpionate complexes of the middle to late 3d transition metals [(L) M (NCMe) 3](BF4) n (M= Mn, Fe, Co, Ni: 1 M, L= tris (3, 5-dimethylpyrazol-1-yl) methane, TpmMe, Me, n= 2; 2 M, L= tris (3-phenylpyrazol-1-yl) methane, TpmPh, n= 2; 3 M except 3 Mn, L= hydrotris (3, 5- dimethylpyrazol-1-yl) borate,[TpMe, Me]−, n= 1; 4 M, L= hydrotris (3-phenyl-5-methylpyrazol- 1-yl) borate,[TpPh, Me]−, n= 1) were examined as catalysts for styrene aziridination and ...