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.