The fluxionality of M(PPh3)2Cl(ArNXNAr) and trans-Pt(PPh3)2H(ArNNNAr) (M = Pd(II), Pt(II); Ar = p-MeC6H4; X = CH, N), is discussed on the basis of 1H NMR, x-ray, and ir studies. The stereochem. non-rigid process is proposed to occur via a pseudo-pentacoordinate intermediate having both N atoms facing the metal through 2 electron lone pairs. A different mechanism via a -bonding component in the M-(N ligand) bond is also discussed.
Bonding and fluxional behavior of N,N'-di-p-tolylformamidino and 1,3-di-p-tolyltriazenido complexes of palladium(II)and platinum(II)
TONIOLO, Luigi;
1976-01-01
Abstract
The fluxionality of M(PPh3)2Cl(ArNXNAr) and trans-Pt(PPh3)2H(ArNNNAr) (M = Pd(II), Pt(II); Ar = p-MeC6H4; X = CH, N), is discussed on the basis of 1H NMR, x-ray, and ir studies. The stereochem. non-rigid process is proposed to occur via a pseudo-pentacoordinate intermediate having both N atoms facing the metal through 2 electron lone pairs. A different mechanism via a -bonding component in the M-(N ligand) bond is also discussed.
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