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

using model chemistry: M06-2X/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 M06-2X/6-31G*
 hartrees
Energy at 0K-267.031022
Energy at 298.15K-267.035164
HF Energy-267.031022
Nuclear repulsion energy160.190798
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/6-31G*
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' 3211 3041 2.06      
2 A' 3099 2935 0.04      
3 A' 3048 2886 72.80      
4 A' 1899 1798 7.63      
5 A' 1887 1787 208.06      
6 A' 1489 1410 14.63      
7 A' 1424 1349 40.13      
8 A' 1381 1308 4.26      
9 A' 1280 1212 22.41      
10 A' 1026 971 4.57      
11 A' 806 764 11.02      
12 A' 582 552 11.77      
13 A' 486 461 28.59      
14 A' 251 238 17.96      
15 A" 3171 3003 1.00      
16 A" 1489 1410 11.13      
17 A" 1088 1030 3.44      
18 A" 923 874 0.44      
19 A" 475 450 0.35      
20 A" 151 143 16.10      
21 A" 104 99 5.74      

Unscaled Zero Point Vibrational Energy (zpe) 14635.3 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 13859.6 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/6-31G*
ABC
0.30403 0.14922 0.10197

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.848 -0.721 0.000
C2 0.000 0.556 0.000
C3 1.491 0.371 0.000
O4 -0.358 -1.820 0.000
O5 -0.577 1.617 0.000
H6 -1.940 -0.537 0.000
H7 1.983 1.344 0.000
H8 1.791 -0.210 0.877
H9 1.791 -0.210 -0.877

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53272.58151.20292.35351.10743.50422.82762.8276
C21.53271.50242.40251.20792.22672.13422.13622.1362
C32.58151.50242.86742.41423.54921.08971.09431.0943
O41.20292.40252.86743.44372.03623.93592.82542.8254
O52.35351.20792.41423.44372.54902.57513.11673.1167
H61.10742.22673.54922.03622.54904.35093.84673.8467
H73.50422.13421.08973.93592.57514.35091.79421.7942
H82.82762.13621.09432.82543.11673.84671.79421.7550
H92.82762.13621.09432.82543.11673.84671.79421.7550

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 116.538 C1 C2 O5 117.871
C2 C1 O4 122.401 C2 C1 H6 114.033
C2 C3 H7 109.819 C2 C3 H8 109.706
C2 C3 H9 109.706 C3 C2 O5 125.591
O4 C1 H6 123.565 H7 C3 H8 110.473
H7 C3 H9 110.473 H8 C3 H9 106.612
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.185      
2 C 0.376      
3 C -0.563      
4 O -0.363      
5 O -0.412      
6 H 0.164      
7 H 0.203      
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
  0.859 -0.069 0.000 0.862
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.868 1.992 0.000
y 1.992 -37.245 0.000
z 0.000 0.000 -27.134
Traceless
 xyz
x 6.321 1.992 0.000
y 1.992 -10.744 0.000
z 0.000 0.000 4.423
Polar
3z2-r28.845
x2-y211.376
xy1.992
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.590 -0.453 0.000
y -0.453 6.178 0.000
z 0.000 0.000 3.272


<r2> (average value of r2) Å2
<r2> 111.177
(<r2>)1/2 10.544