Several Rh(I), Ir(III), and Pt(II) complexes of the chiral P,S-bidentate ligand 2 have been prepared and characterized. Detailed two-dimensional NMR studies show that (i) the boat-type chelate ring and the stereogenic sulfur center can invert rapidly at ambient temperature and (ii) the sulfur donor may dissociate, essentially destroying the chiral pocket. The solid-state structure of [Pt(eta(3)-C3H5)(2)]PF6 (3) has been determined and the sulfur substituent shown to have an axial orientation. The six-membered chelate ring takes up a boatlike conformation. As shown by an X-ray diffraction study for 3, and via incoherent inelastic neutron scattering (IINS) measurements for the Pd analog, 4, the OH group is remote from the metal atom.
NMR studies of chiral P,S-chelate platinum, rhodium, and iridium complexes and the X-ray structure of a palladium(II) allyl derivative / A. Albinati, J. Eckert, P. Pregosin, H. Ruegger, R. Salzmann, C. Stossel. - In: ORGANOMETALLICS. - ISSN 0276-7333. - 16:4(1997 Feb 18), pp. 579-590.
NMR studies of chiral P,S-chelate platinum, rhodium, and iridium complexes and the X-ray structure of a palladium(II) allyl derivative
A. AlbinatiPrimo
;
1997
Abstract
Several Rh(I), Ir(III), and Pt(II) complexes of the chiral P,S-bidentate ligand 2 have been prepared and characterized. Detailed two-dimensional NMR studies show that (i) the boat-type chelate ring and the stereogenic sulfur center can invert rapidly at ambient temperature and (ii) the sulfur donor may dissociate, essentially destroying the chiral pocket. The solid-state structure of [Pt(eta(3)-C3H5)(2)]PF6 (3) has been determined and the sulfur substituent shown to have an axial orientation. The six-membered chelate ring takes up a boatlike conformation. As shown by an X-ray diffraction study for 3, and via incoherent inelastic neutron scattering (IINS) measurements for the Pd analog, 4, the OH group is remote from the metal atom.File | Dimensione | Formato | |
---|---|---|---|
om960823q.pdf
accesso riservato
Tipologia:
Publisher's version/PDF
Dimensione
453.43 kB
Formato
Adobe PDF
|
453.43 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.