The novel radical R3Sn˙(R = PhMe2CCH2), generated from the new compounds R3SnH, R3Sn–SnR3, and R3Sn–Hg–SnR3, is shown to be pyramidal by e.s.r. measurements between –80 and +120 °C [aH(CH2)= 3·1 G, g= 2·013, a(117Sn)= 1325 and a(119Sn)= 1380 G, τ½ < 0·1 s], the rotation around the Sn–C bonds being hindered.
H. U. Buschhaus, M. Lehnig and W. P. Neumann, J. Chem. Soc., Chem. Commun., 1977, 129 DOI: 10.1039/C39770000129
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