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All results from a given calculation for C3H4O2 (Methyl glyoxal)

using model chemistry: QCISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-266.583110
Energy at 298.15K 
HF Energy-265.666014
Nuclear repulsion energy159.964837
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 QCISD/6-31G(2df,p)
Rotational Constants (cm-1) from geometry optimized at QCISD/6-31G(2df,p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.846 -0.721 0.000
C2 0.000 0.556 0.000
C3 1.495 0.373 0.000
O4 -0.365 -1.826 0.000
O5 -0.576 1.620 0.000
H6 -1.934 -0.527 0.000
H7 1.987 1.344 0.000
H8 1.795 -0.206 0.877
H9 1.795 -0.206 -0.877

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53242.58401.20522.35631.10533.50572.82962.8296
C21.53241.50612.41071.20932.21692.13712.13802.1380
C32.58401.50612.88042.41753.54511.08881.09281.0928
O41.20522.41072.88043.45242.03713.94772.83872.8387
O52.35631.20932.41753.45242.53992.57773.11843.1184
H61.10532.21693.54512.03712.53994.34433.84383.8438
H73.50572.13711.08883.94772.57774.34431.79171.7917
H82.82962.13801.09282.83873.11843.84381.79171.7536
H92.82962.13801.09282.83873.11843.84381.79171.7536

picture of Methyl glyoxal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 116.512 C1 C2 O5 118.023
C2 C1 O4 122.978 C2 C1 H6 113.391
C2 C3 H7 109.845 C2 C3 H8 109.684
C2 C3 H9 109.684 C3 C2 O5 125.464
O4 C1 H6 123.631 H7 C3 H8 110.432
H7 C3 H9 110.432 H8 C3 H9 106.713
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability