C60 2- chemistry: C60 adducts bearing two ester, carbonyl, or alcohol groups.

Reactions of activated halo compounds XCH(2)-A (X = Br, I; A = ester, ketone) with C(60)(2-) anion give rise to C(60)(CH(2)-A)(2) adducts (major products) along with unexpected methanofullerenes C(60)>CH-A and monosubstituted dihydrofullerenes C(60)(H)(CH(2)-A) (minor products). Methanofullerenes are shown to come from side reactions with X(2)CH-A traces. [reaction: see text]