Mc. Kuchta et al., Divalent tin and lead complexes of a bulky salen ligand: the syntheses andstructures of [Salen(But),Me]Sn and [Salen(But),Me]Pb, J CHEM S DA, (20), 1999, pp. 3559-3563
Citations number
41
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
The divalent tin and lead complexes, [Salen(But,Me)]Sn and [Salen(But,Me)]P
b, have been synthesized by the reactions of [(Me3Si)(2)N](2)M (M = Sn, Pb)
with the substituted Salen compound, [Salen(But,Me)]H-2. [Salen(But,Me)]Sn
and [Salen(But,Me)]Pb have been characterized by X-ray diffraction, which
demonstrates that the complexes are structurally similar, with the metal at
om located above the [N2O2] plane. Despite their similar structures, howeve
r, H-1 NMR spectroscopy demonstrates that the barrier for the formal transf
er of the metal from one face of the ligand to the other is significantly g
reater for the tin derivative.