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

using model chemistry: M06-2X/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at M06-2X/6-311G**
 hartrees
Energy at 0K-267.110392
Energy at 298.15K-267.114566
HF Energy-267.110392
Nuclear repulsion energy160.546230
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 M06-2X/6-311G**
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' 3179 3179 1.87      
2 A' 3073 3073 0.20      
3 A' 3011 3011 66.92      
4 A' 1887 1887 24.97      
5 A' 1875 1875 224.90      
6 A' 1464 1464 17.29      
7 A' 1403 1403 45.33      
8 A' 1368 1368 3.40      
9 A' 1266 1266 19.71      
10 A' 1015 1015 4.46      
11 A' 800 800 12.04      
12 A' 582 582 12.81      
13 A' 490 490 29.58      
14 A' 251 251 17.29      
15 A" 3147 3147 1.00      
16 A" 1462 1462 12.87      
17 A" 1089 1089 3.68      
18 A" 919 919 0.48      
19 A" 482 482 0.14      
20 A" 156 156 17.53      
21 A" 100 100 5.54      

Unscaled Zero Point Vibrational Energy (zpe) 14508.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14508.3 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 M06-2X/6-311G**
ABC
0.30535 0.14960 0.10229

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.846 -0.725 0.000
C2 0.000 0.557 0.000
C3 1.490 0.377 0.000
O4 -0.358 -1.817 0.000
O5 -0.577 1.611 0.000
H6 -1.936 -0.539 0.000
H7 1.977 1.349 0.000
H8 1.788 -0.205 0.875
H9 1.788 -0.205 -0.875

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53512.58181.19632.35071.10653.50242.82352.8235
C21.53511.50042.40051.20182.22482.13002.13142.1314
C32.58181.50042.86802.40723.54611.08751.09231.0923
O41.19632.40052.86803.43472.03113.93372.82332.8233
O52.35071.20182.40723.43472.54322.56803.10753.1075
H61.10652.22483.54612.03112.54324.34503.84043.8404
H73.50242.13001.08753.93372.56804.34501.79291.7929
H82.82352.13141.09232.82333.10753.84041.79291.7505
H92.82352.13141.09232.82333.10753.84041.79291.7505

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 116.536 C1 C2 O5 117.867
C2 C1 O4 122.519 C2 C1 H6 113.760
C2 C3 H7 109.760 C2 C3 H8 109.580
C2 C3 H9 109.580 C3 C2 O5 125.597
O4 C1 H6 123.721 H7 C3 H8 110.679
H7 C3 H9 110.679 H8 C3 H9 106.506
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.160      
2 C 0.162      
3 C -0.399      
4 O -0.276      
5 O -0.287      
6 H 0.129      
7 H 0.169      
8 H 0.171      
9 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.862 -0.082 0.000 0.866
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.094 2.091 0.000
y 2.091 -37.782 0.000
z 0.000 0.000 -27.456
Traceless
 xyz
x 6.524 2.091 0.000
y 2.091 -11.007 0.000
z 0.000 0.000 4.483
Polar
3z2-r28.965
x2-y211.687
xy2.091
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.927 -0.439 0.000
y -0.439 6.340 0.000
z 0.000 0.000 3.517


<r2> (average value of r2) Å2
<r2> 111.115
(<r2>)1/2 10.541