Synthesis and structural characterization of (2-oxazolinylthienyl)tetraorganotin(IV) compounds

Article abstract of DOI:10.1016/0022-328X(94)87267-8

The synthesis and spectroscopic characterization (119mSn Moessbauer and 13C/119Sn NMR) of a series of thienyl tetraorganotin compounds, LnSnR4-n (L=<2-(4,4-dimethyl-2-oxazolinyl)-3-thienyl>; R=CH3, n-C4H9, c-C6H11, C6H5, p-CH3C6H4 and p-ClC6H4; n=1, 2) are described.The compounds are essentially four-coordinate structures in the solid state and in solution.An X-ray crystal structure analysis of <2-(4,4-dimethyl-2-oxazolinyl)-3-thienyl>tri(p-tolyl)tin confirms the tetrahedral geometry at tin.The oxazolinyl substituent on the thienyl ring is oriented in such a way that the oxygen atom rather than the nitrogen points towards tin at a non-bonded contact of 2.977(3) Angstroem, thus inducing a slight distortion of the tetrahedral geometry.This finding contrasts with those for LSnPh2Cl and LSnMe2(S2CNMe2), in which the oxazolinyl nitrogen is intramolecularly coordinated to tin. Key words: Tin; Nuclear magnetic resonance; Moessbauer spectroscopy; Thienyl; Crystal structure