A series of platinum(I1) derivatives with 1,I'-bis(dipheny1phosphino)ferrocene (L-L) were synthesized and characterized in solution mainly by 'H and 31P(1HN) MR spectroscopy. The series includes, besides the known Pt(L-L)CI, (l),t he mononuclear species Pt(L-L)(pz), (2, pzH = pyrazole), Pt(L-L)(3,5-Me2pz) (3, 3,5-Me2pzH = 3,5-dimethylpyrazole), [Pt(L-L)(3,5-Me2pzH)J [BF,], (4), and [Pt(L-L)(H20)2][BF4]2.(5~)H a2s0 w ell as the dinuclear species [(L-L)Pt(p-OH),Pt(L-L)][BF,], (6) and [Pt,(LL), H,][BF,] (7). Reaction of the hydrido complex 7 with CO (room temperature, 1 atm) gave [(L-L)Pt(pH)(p-CO)Pt(LL)] [BF,] (8), formally a platinum(1) derivative. The molecular structure of [(L-L)Pt(s-H)(p-CO)Pt(L-L)] [BF,].0.5H20 (8a) was determined by X-ray analysis: the complex crystallizes in the triclinic space group Pi with a = 12.411 (4) A, b = 15.930 (5) A, c = 16.922 (7) A, ci = 100.64 (3)O, @ = 98.74 (3)O, y = 104.34 (3)", Z = 2, and V = 3166 (4) A'. The structure was refined to a conventional R factor of 0.025. In the dinuclear cation, the platinum atoms have cis-square-planar coordination, which shows a significant distortion toward tetrahedral geometry with P-Pt-P angles of 103.68 (6) and 103.64 (6)O. The Pt-Pt distance is 2.790 A.
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
|Titolo:||1,1'-Bis(diphenylphosphino)ferrocene Complexes of Platinum(II) and Platinum(I). Crystal and Molecular Structure of [(L-L)Pt(m-H)(m-CO)Pt(L-L)][BF4].0.5H2O, where (L-L) = Fe(h5-C5H4PPh2)2|
|Data di pubblicazione:||1989|
|Appare nelle tipologie:||1.1 Articolo in rivista|