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All results from a given calculation for C2H2O4 (Oxalic Acid)

using model chemistry: CCSD(T)/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-377.816066
Energy at 298.15K 
HF Energy-376.520858
Nuclear repulsion energy234.056943
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at CCSD(T)/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)/cc-pVTZ
ABC
0.19275 0.12840 0.07706

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.054 0.767 0.000
C2 0.054 -0.767 0.000
O3 1.126 1.373 0.000
O4 -1.126 -1.373 0.000
O5 -1.126 1.320 0.000
O6 1.126 -1.320 0.000
H7 1.789 0.660 0.000
H8 -1.789 -0.660 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 O6 H7 H8
C11.53811.32702.39401.20642.39761.84622.2463
C21.53812.39401.32702.39761.20642.24631.8462
O31.32702.39403.55232.25362.69290.97393.5543
O42.39401.32703.55232.69292.25363.55430.9739
O51.20642.39762.25362.69293.47012.98932.0872
O62.39761.20642.69292.25363.47012.08722.9893
H71.84622.24630.97393.55432.98932.08723.8135
H82.24631.84623.55430.97392.08722.98933.8135

picture of Oxalic Acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 113.149 C1 C2 O6 121.286
C1 O3 H7 105.695 C2 C1 O3 113.149
C2 C1 O5 121.286 C2 O4 H8 105.695
O3 C1 O5 125.565 O4 C2 O6 125.565
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability