The monoadducts of C-60 with dibromo-, bromochloro-, and diiodocarbene
s were synthesized and characterized. The mass spectra (MS) of C(60)CX
Y (X,Y = Cl, CI; Br, Br; and Br, Cl) were measured by the FAB, ESI, MA
LDI, and LD methods. The LDMS revealed that oligomerization reaction o
ccurred to exhibit signals ascribable to C-2n (2n = 122 - 132 and 184
- 196).