[en] The noncoplanar symmetric (e,2e) reaction has been applied to C₂H₂ at 1200eV and 400eV. In addition to the four prominent peaks in the separation energy spectra at 11.4eV, 16.8eV and 23.7eV corresponding to the ejection of electrons from the 1πsub(u), 3sigmasub(g), 2sigmasub(u) and 2sigmasub(g) molecular orbitals respectively, considerable structure extending up to 45eV is observed. Most of this satellite structure can be assigned to the 2sigmasub(g) orbital. The state at 23.7eV has not previously been observed in electron separation energy spectra. Electron momentum distributions are measured for the above four transitions as well as for a transition at a separation energy of 29eV