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

using model chemistry: CID/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CID/6-31G
 hartrees
Energy at 0K-265.967224
Energy at 298.15K-265.971481
HF Energy-265.508879
Nuclear repulsion energy158.814934
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 CID/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3237 3027 5.27      
2 A' 3139 2936 45.55      
3 A' 3126 2924 2.16      
4 A' 1810 1692 11.80      
5 A' 1779 1664 113.11      
6 A' 1565 1463 17.80      
7 A' 1511 1413 29.28      
8 A' 1423 1331 5.44      
9 A' 1333 1247 23.55      
10 A' 1088 1018 3.56      
11 A' 828 774 10.86      
12 A' 611 571 11.88      
13 A' 509 476 31.27      
14 A' 265 248 20.36      
15 A" 3196 2988 4.74      
16 A" 1563 1462 13.15      
17 A" 1134 1061 4.35      
18 A" 962 900 0.14      
19 A" 492 460 0.59      
20 A" 145 136 23.55      
21 A" 105 98 6.37      

Unscaled Zero Point Vibrational Energy (zpe) 14910.6 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 13944.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at CID/6-31G
ABC
0.30040 0.14666 0.10038

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.849 -0.719 0.000
C2 0.000 0.539 0.000
C3 1.498 0.392 0.000
O4 -0.353 -1.846 0.000
O5 -0.593 1.625 0.000
H6 -1.931 -0.550 0.000
H7 1.956 1.381 0.000
H8 1.826 -0.168 0.880
H9 1.826 -0.168 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.51732.59671.23192.35771.09543.50392.86942.8694
C21.51731.50532.41131.23762.21742.12972.14692.1469
C32.59671.50532.90482.42783.55671.08981.09381.0938
O41.23192.41132.90483.47982.04203.96852.88792.8879
O52.35771.23762.42783.47982.55432.56103.13743.1374
H61.09542.21743.55672.04202.55434.34103.87803.8780
H73.50392.12971.08983.96852.56104.34101.78671.7867
H82.86942.14691.09382.88793.13743.87801.78671.7607
H92.86942.14691.09382.88793.13743.87801.78671.7607

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 118.426 C1 C2 O5 117.340
C2 C1 O4 122.243 C2 C1 H6 115.194
C2 C3 H7 109.254 C2 C3 H8 110.378
C2 C3 H9 110.378 C3 C2 O5 124.234
O4 C1 H6 122.564 H7 C3 H8 109.810
H7 C3 H9 109.810 H8 C3 H9 107.190
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability