Pt and Pt/Cu carbonyl clusters synthesized by radiolysis

✍ Scribed by B. Le Gratiet; H. Remita; G. Picq; M.O. Delcourt

• Book ID: 103990462
• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 473 KB
• Volume: 47
• Category: Article
• ISSN: 0969-806X
• DOI: 10.1016/0969-806x(94)00178-m

✦ Synopsis

In the mixed solvent: 50/50% v/v water/2-propanol, [Pt3(CO)6]2n -clusters with n = 3 10 have been obtained by irradiating solutions containing K2PtCI 4 under 1 atm CO. n is deduced from the very typical UV-visible and IR absorption spectra. The reduction occurs by a combined effect of CO and of the radicals produced by radiolysis (radiocatalysis). The synthesis is selective: the nuclearity n can be chosen by adjusting the dose (high doses yield low n values). Increasing the Pt salt concentration leads to CO-stabilized subcolloid particles, Intermetallic cluster compounds are expected from solutions containing two metal salts: bimetallic Pt/Cu carbonyl clusters have been obtained. Two distinct compounds have been characterized by their UV-visible spectra. Attempts with Pt/Ru and Pt/Sn systems were unsuccessful.