New pyrazolato derivatives of platinum(II) are isolated, (LL)Pt(pz)2, A, [LL = Ph2P(CH2)nPPh2 (n = 1, 2, 3, or 4), Ph2PCH2CH2AsPh2, (Ph2AsCH2)2 or cis-Ph2PCHCHPPh2; pzH = pyrazole, 3,5-dimethyl,- 3,5-bis(trifluoromethyl)-, or 3,5-dimethyl-4-nitro-pyrazole] by reaction of (LL)PtCl2 with pyrazole and potassium hydroxide in methanol. By protonation of A with fluoboric acid the corresponding pyrazole adducts, [(LL)Pt(pzH)2][BF4]2, B, are obtained when pzH is 3,5-dimethylpyrazole. The properties of the compounds are discussed on the basis mainly of the NMR evidence; 31P data are related to the dimension of the PtP(C)nP ring (n = 1-4) and to the trans-influence of the pyrazolato and pyrazole ligand. © 1982.
|Titolo:||A series of pyrazole adducts and pyrazolato derivatives of platinum(II) containing various chelating phosphines as ligands: Characterization, 1H and 31P1H NMR spectra|
BANDITELLI, GUIDO (Primo)
BANDINI, ANNA LAURA (Secondo)
|Settore Scientifico Disciplinare:||Settore CHIM/03 - Chimica Generale e Inorganica|
|Data di pubblicazione:||1982|
|Digital Object Identifier (DOI):||10.1016/S0020-1693(00)91156-3|
|Appare nelle tipologie:||01 - Articolo su periodico|