Keywords: Oxalic-anhydride-Spartan-HF-6-31Gstar-3D-balls.png Ball-and-stick model of the oxalic anhydride molecule C<sub>2</sub>O<sub>3</sub> Structure calculated with the Hartree-Fock 6-31G basis set in http //www wavefun com/products/macintosh/Student/mac_student html Spartan '04 Student Edition own 2009-03-26 Ben Mills Benjah-bmm27 Images by Ben Mills Oxalic anhydride |