Structures and electron detachment energies of Ga2S3- and Ga3S2-

Neutral Ga2S3 and Ga3S2 have similar C2ν 'V' gas phase equilibrium geometry. Ga2S3-adopts the C2ν kite geometry while Ga3S2-prefers the three dimensional geometry having D3h symmetry. The predicted adiabatic electron affinities of Ga2S3- and Ga3S2- are 3.30 eV and 2.76 eV at the CCSD(T)//B3LYP/6-311+G(2df) level.