Three dimensional near-equilibrium potential energy surfaces fro the 32-electron C-2 nu triatomics Sif(2), PF2+, PO2-, and ClO2+ have been calculated using the coupled cluster method with single and double substitutions augmented by perturbative treatment of triple excitations [CCSD(T)] with a basis set of 169 contracted Gaussian-type orbitals (cGTOs). A complete set of rotation-vibrational spectroscopic constants for each species has been calculated using second-order perturbation theory formulas. The CCSD(T) equilibrium geometries of PF2+, PO2-, and ClO2+ are r(2) = 1.505 Angstrom, theta(3) = 102.6 degrees, r(3) = 1.506 Angstrom, theta(e) = 118.9 degrees, and r(e) = 1.425 Angstrom, theta(e) = 120.8 degrees, respectively. The calculated fundamental frequencies (nu(a), nu(2), nu(3)) are 1017.8, 411.3, 1058.4 cm(-1) (PF2-), 1059.7, 460.5, 1212.7 cm(-1) (PO2-), and 1005.1, 496.1, 1271.7 cm(-1) (ClO2+). Dipole moments of these species have been calculated at each of the CCSD(T) equilibrium geometries to predict microwave intensities.