Chromium → Chromium(III) Bis-triflimide

Participants

Reaction Conditions

Reaction Steps

Chromium metal (1.0 g, 99.95% purity) pieces were suspended in water (20 mL) and hydrogen bis-triflimide (HNTf2) (5 g) was added. This mixture was heated under reflux for 144 hours. The resultant mixture was cooled, filtered and concentrated on a rotary evaporator to give a green solid. The solid were heated at 150° C. at 1 mmHg to remove the residual water and hydrogen bis-triflimide. The solid was thought to contain an oxo chromium bis-triflimide species CrO(NTf2) from the mass of HNTf2 produced in drying process. The unpurified chromium(III) bis-triflimide was found to display catalytic activity in Friedel-Crafts reactions, and was similar in activity to Zn(NTf2)2.

Provenance & Evidence