Reactions of some tin(II) and tin(IV) compounds with the dodecahydro-nido-decaborate(2–) ion, [B10H12]2–

Abstract

The new ionic compounds [Ph₄As]₂[B₁₀H₁₂] and [Ph₃MeP]₂[B₁₀H₁₂] react with anhydrous SnCl₂ to give metallic tin, HCl, salts of closo-[B₁₀H₁₀]^2–, and salts of the nido-stannadecaborate ion [B₁₀H₁₂SnCl₂]^2– which has been shown by ¹¹⁹Sn Mössbauer spectroscopy to be a tin(II) complex. The corresponding reactions with Me₂SnCl₂ yield [B₁₀H₁₀]^2– salts and also the novel tin(II) ion [Me₂SnCl₂]^2– as well as the chelated ion [B₁₀H₁₂Me₂SnCl₂]^2– which has been shown by Mössbauer spectroscopy to be a tin(IV) derivative, I.r. and ¹¹B n.m.r. data are discussed and structures proposed. The compound Et₂SnCl₂ reacted to give [Ph₄As]₂[B₁₀H₁₂Et₂SnCl₂] but Ph₂SnCl₂ did not lead to isolable stannaborate species.