For each of the following, indicate the type of reaction (substitution; 1,1-insertion; 1,2-insertion; deinsertion; oxidative addition; reductive elimination; nucleophilic addition to a ligand; electrophilic addition to a ligand; or abstraction) and the electron count on the metal before and after the reaction. (a) os3(co)11(ch3cn) + c2h4 > os3(co)11(ƞ2-c2h4) + ch3cn

(b) (ƞ5-c5h5)rh(ch2ch3)(pme3)+ > (ƞ5-c5h5)rh(h)(pme3)+ + ch2=ch2

(c) (oc)5w=c(ome)ch3 + bbr3 > (oc)5w=cch3+ + b(ome)br3-

(d) (me3p)2cume + co2 > (me3p)2cu{o-c(=o)me}