[4- tert-Butyl-2,6-bis-(di-phenyl-meth-yl)phenolato-κ O]dieth-yl(tetra-hydro-furan-κ O)aluminium

Mikhail E Minyaev; Ilya E Nifant'ev; Andrei V Churakov; Andrei V Shlyahtin

doi:10.1107/S2056989018001172

[4- tert-Butyl-2,6-bis-(di-phenyl-meth-yl)phenolato-κ O]dieth-yl(tetra-hydro-furan-κ O)aluminium

Acta Crystallogr E Crystallogr Commun. 2018 Jan 26;74(Pt 2):221-224. doi: 10.1107/S2056989018001172. eCollection 2018 Feb 1.

Authors

Mikhail E Minyaev¹, Ilya E Nifant'ev^{1

2}, Andrei V Churakov³, Andrei V Shlyahtin^{1

2}

Affiliations

¹ A.V.Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky prospect, 119991, Moscow, Russian Federation.
² Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, Moscow 119991, Russian Federation.
³ N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky Prospect, Moscow 119991, Russian Federation.

Abstract

The title compound, {Al[O-2,6-(Ph₂CH)₂-4- ^t BuC₆H₂]Et₂(THF)} or [Al(C₂H₅)₂(C₃₆H₃₃O)(C₄H₈O)], was formed in the reaction between 4-tert-butyl-2,6-bis-(di-phenyl-meth-yl)phenol and tri-ethyl-aluminum in the presence of THF (THF is tetra-hydro-furan) and recrystallized from hexane. The structure has monoclinic (P2₁/n) symmetry with a single Al atom in the asymmetric unit. The terminal C atom of one ethyl substituent is nearly equally disordered over two positions. The complex possesses catalytic activity in the ring-opening polymerization of ∊-caprolactone.

Keywords: 4-tert-butyl-2,6-bis(diphenylmethyl)phenol; NMR; aluminium; caprolactone polymerization; crystal structure; phenoxide complex.

Grants and funding

This work was funded by Russian Academy of Sciences grant .