CO in benzene-d6 Dissolving of neopentyl complex in C6D6, pressurizing with CO (to 3 atm).; Evapn. in vac., extn. with pentane, filtn., concg., cooling (-20°C).;

With  CO in  toluene  Dissolving of neopentyl complex in toluene, pressurizing with CO (to 3 atm), within yellow soln. turns orange then back yellow.; Evapn. in vac., extn. with pentane, filtn., concg., cooling (-20°C), elem. anal.;