US 12,304,922 B1
Low pressure process for synthesis of Pt(PF3)4 involving a soluble intermediate and storage of obtained Pt(PF3)4
Grigory Nikiforov, Branchburg, NJ (US); and Nicolas Blasco, Paris (FR)
Assigned to L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude, Paris (FR)
Filed by L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude, Paris (FR)
Filed on May 4, 2023, as Appl. No. 18/143,500.
Application 18/143,500 is a continuation of application No. 17/546,169, filed on Dec. 9, 2021, granted, now 11,673,904.
This patent is subject to a terminal disclaimer.
Int. Cl. C07F 15/00 (2006.01)
CPC C07F 15/0093 (2013.01) 30 Claims
 
1. A method for synthesis of Pt(PF3)4 (CAS #19529-53-4), the method comprising the steps of:
forming a suspension of a platinum precursor Pt(Hal)2, wherein Hal=F, Cl, Br or I, and a metal powder in a solvent;
introducing excess amount of PF3 into the suspension of Pt(Hal)2 and the metal powder;
forming a soluble reaction intermediate Pt(Hal)2(PF3)x in the solvent through a reaction between PF3 and Pt(Hal)2, wherein Hal=F, Cl, Br or I; x=1, 2, under a reaction condition; and
forming Pt(PF3)4 from a reaction between Pt(Hal)2(PF3)x, the metal powder and the excess of PF3 in the solvent.