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DOI: 10.1039/A905490A (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1999, 3559-3563

Divalent tin and lead complexes of a bulky salen ligand: the syntheses and structures of [SalenBut,Me]Sn and [SalenBut,Me]Pb

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Matthew C. Kuchta, Juliet M. Hahn and Gerard Parkin

Abstract

The divalent tin and lead complexes, [SalenBut,Me]Sn and [SalenBut,Me]Pb, have been synthesized by the reactions of [(Me3Si)2N]2M (M = Sn, Pb) with the substituted Salen compound, [SalenBut,Me]H2. [SalenBut,Me]Sn and [SalenBut,Me]Pb have been characterized by X-ray diffraction, which demonstrates that the complexes are structurally similar, with the metal atom located above the [N2O2] plane. Despite their similar structures, however, 1H NMR spectroscopy demonstrates that the barrier for the formal transfer of the metal from one face of the ligand to the other is significantly greater for the tin derivative.

References

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