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

using model chemistry: HSEh1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/6-31+G**
 hartrees
Energy at 0K-266.887463
Energy at 298.15K 
HF Energy-266.887463
Nuclear repulsion energy159.947378
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 HSEh1PBE/6-31+G**
Rotational Constants (cm-1) from geometry optimized at HSEh1PBE/6-31+G**
ABC
0.30454 0.14805 0.10147

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.834 -0.733 0.000
C2 0.000 0.551 0.000
C3 1.488 0.407 0.000
O4 -0.345 -1.836 0.000
O5 -0.601 1.605 0.000
H6 -1.928 -0.554 0.000
H7 1.957 1.391 0.000
H8 1.807 -0.169 0.875
H9 1.807 -0.169 -0.875

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53142.58751.20642.34991.10863.50792.83902.8390
C21.53141.49512.41161.21332.22242.12982.13252.1325
C32.58751.49512.89692.40813.54921.08991.09511.0951
O41.20642.41162.89693.45042.03743.96402.85932.8593
O52.34991.21332.40813.45042.53432.56683.11573.1157
H61.10862.22243.54922.03742.53434.34503.85543.8554
H73.50792.12981.08993.96402.56684.34501.79501.7950
H82.83902.13251.09512.85933.11573.85541.79501.7509
H92.83902.13251.09512.85933.11573.85541.79501.7509

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 117.501 C1 C2 O5 117.301
C2 C1 O4 123.049 C2 C1 H6 113.701
C2 C3 H7 109.961 C2 C3 H8 109.869
C2 C3 H9 109.869 C3 C2 O5 125.198
O4 C1 H6 123.251 H7 C3 H8 110.467
H7 C3 H9 110.467 H8 C3 H9 106.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.154      
2 C 0.319      
3 C -0.538      
4 O -0.330      
5 O -0.378      
6 H 0.161      
7 H 0.202      
8 H 0.205      
9 H 0.205      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.065 -0.063 0.000 1.067
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.150 2.432 0.000
y 2.432 -38.703 0.000
z 0.000 0.000 -27.592
Traceless
 xyz
x 6.998 2.432 0.000
y 2.432 -11.832 0.000
z 0.000 0.000 4.834
Polar
3z2-r29.669
x2-y212.553
xy2.432
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.557 -0.545 0.000
y -0.545 7.339 0.000
z 0.000 0.000 3.976


<r2> (average value of r2) Å2
<r2> 112.075
(<r2>)1/2 10.587