Data di Pubblicazione:
2007
Citazione:
Platinum(II) and Palladium(II) Complexes with N-Aminoguanidine / D.J. Aitken, A. Albinati, A. Gautier, H.P. Husson, G. Morgant, D. Nguyen-Huy, J. Kozelka, P. Lemoine, S. Ongeri, S. Rizzato, B. Viossat. - In: EUROPEAN JOURNAL OF INORGANIC CHEMISTRY. - ISSN 1434-1948. - 2007:21(2007), pp. 3327-3334. [10.1002/ejic.200600998]
Abstract:
N-Aminoguanidine (Amgu) was examined for its behaviour
as a ligand for platinum(II) and palladium(II). Protonated
AmguH+ can coordinate platinum as a monodentate ligand
bound via the N4 amino group. Deprotonated, electrically
neutral Amgu forms chelate complexes with both PtII and
PdII; in these complexes Amgu is coordinated to the metal by
the N4 amino group and the deprotonated N1 imino group,
forming a five-membered ring. K[PtCl3(dmso)] reacted with
Amgu·HCl to yield a chelate complex with N1 bound trans
to S, suggesting that an exchange between the N1 and N4
binding sites followed the primary nucleophilic attack of N4 on platinum. Whereas reactions between K2PdCl4 and
Amgu·HCl were rapid and straightforward, K2PtCl4 was easily
reduced to metallic platinum by Amgu·HCl, especially in
stoichiometric conditions. Solution NMR and X-ray crystallographic
characterization is presented for five new complexes:
trans-[PtCl2(AmguH-N4)2]Cl2·21/2H2O (3), trans-[Pt(Amgu-
N1,N4)2](NO3)2 (4), [PtCl(Amgu-N1,N4)(dmso)]Cl·2H2O (5),
[PdCl2(AmguH-N1,N4)] (6), and trans-[Pd(Amgu-N1,N4)2]-
Cl2 (7).
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Platinum ; Palladium ; N ligands ; Coordination modes
Elenco autori:
D.J. Aitken, A. Albinati, A. Gautier, H.P. Husson, G. Morgant, D. Nguyen Huy, J. Kozelka, P. Lemoine, S. Ongeri, S. Rizzato, B. Viossat
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