Group IV Complexes with Sterically Congested N-Aryl-adamantylcarbamidate Ligands.

ABSTRACT: Metalation of N-(2,6-dibenzhydryl-4-tolyl)adamantane-1-carboxamide (1, Ar*N(H)-C(O)-Ad) with M(NMe₂)₄ (M = Ti, Zr, Hf) yields amidate complexes Ar*N=C(Ad)-O-Ti(NMe₂)₃ (2) as well as bis(amidate) compounds (Ar*N=C(Ad)-O)₂M(NMe₂)₂ (M = Zr (3), Hf (4)). In 2, the amidate ligand acts as a monodentate base via the oxygen atom with the Ti center in a slightly distorted tetrahedral environment. The steric requirement of the amidate ligand stabilizes the small coordination number of four of the Ti atom. In congeners 3 and 4, two bidentate amidate ligands exist in the coordination spheres, leading to hexacoordinate group IV metal atoms. The small bite angles of the Zr

SUBMITTER: Kheirkhah BR 

PROVIDER: S-EPMC10467577 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature