Synthesis of a terminal Ce(iv) oxo complex by photolysis of a Ce(iii) nitrate complex.

ABSTRACT: Reaction of [Ce(NR₂)₃] (R = SiMe₃) with LiNO₃ in THF, in the presence of 2,2,2-cryptand, results in the formation of the Ce(iii) "ate" complex, [Li(2,2,2-cryptand)][Ce(κ²-O₂NO)(NR₂)₃] (1) in 38% yield. Photolysis of 1 at 380 nm affords [Li(2,2,2-cryptand)][Ce(O)(NR₂)₃] (2), in 33% isolated yield after reaction work-up. Complex 2 is the first reported example of a Ce(iv) oxo complex where the oxo ligand is not supported by hydrogen bonding or alkali metal coordination. Also formed during photolysis are [Li(2,2,2-cryptand)]₂[(μ₃-O){Ce(μ-O)(NR₂)₂}₃] (3) and [Li(2,2,2-cryptand)][Ce(OSiMe

SUBMITTER: Assefa MK 

PROVIDER: S-EPMC5674170 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature