Co-ordination chemistry of tridentate phosphinothiolates; syntheses and structures of [Li4{PhP(C6H3S-2-SiMe3-3)2}2(MeOCH2CH2OMe)2], [Sn2{PhP(C6H3S-2-SiMe3-3)2}2] and [NHEt3][Sm{PhP(C6H3S-2-R-3)2}2(py)2]·2py (R = H or SiMe3, py = C5H5N)

Abstract

Treatment of PhP[C₆H₃(SH-2)R-3]₂(R = H, H₂L¹, or SiMe₃, H₂L², with SmI₃ and NEt₃ and then recrystallisation from pyridine (py) yielded [NHEt₃][SmL₂(py)₂]·2py (L = L¹3 or L²4), while H₂L² and LiBuⁿ or [Sn{N(SiMe₃)₂}₂] afforded [{Li₂L²(dme)}₂]1(after addition of dme) or [(SnL²)₂]2, respectively (dme = MeOCH₂CH₂OMe). Compounds 1–4 have been characterised by microanalysis, NMR spectra and single-crystal X-ray diffraction.