Abstract
Catalytic reductions of N<inf>2</inf>O and NO by CO to N<inf>2</inf> can be achieved at 100°C in solutions containing Rh<inf>2</inf>(CO) <inf>4</inf>Cl<inf>2</inf> and a base: the highest rate for the N<inf>2</inf>O reduction of 25.2 turnovers per hour in dimethyl sulphoxide was obtained using KOH as the base.