New terphenylphenoxides of group 13 and 14 elements

Abstract

The reaction of the sterically hindered terphenol Ar ∗ OH ( Ar ∗ = C 6 H 3 - 2 , 6 ( C 6 H 2 - 2 , 4 , 6 - Pr 3 i ) 2 ) with trimethylaluminum or trimethylgallium in ether led to the isolation of the corresponding ether-coordinated monophenoxide species Ar*OM(CH 3) 2(Et 2O) (M = Al ( 1) or Ga ( 2)). The reaction of the lithium salt of the related bulky terphenol Ar ′ OH ( Ar ′ = C 6 H 3 - 2 , 6 ( C 6 H 3 - 2 , 6 - Pr 3 i ) 2 ) with the divalent species MCl 2 (M = Ge, Sn) afforded the novel germanium (II) and tin (II) mono- and bisphenoxides [{Ar′OGeCl}(dioxane)] · toluene (3 · toluene), Ge(OAr′) 2 ( 4) and Sn(OAr′) 2 ( 5). The compounds were characterized by 1H, 13C and 119Sn NMR ( 5) spectroscopy, and by IR spectroscopy and X-ray crystallography.