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

using model chemistry: wB97X-D/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/aug-cc-pVTZ
 hartrees
Energy at 0K-267.163158
Energy at 298.15K 
HF Energy-267.163158
Nuclear repulsion energy160.418157
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 wB97X-D/aug-cc-pVTZ
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' 3187 3049 4.38      
2 A' 3064 2931 0.03      
3 A' 2963 2835 70.17      
4 A' 1849 1769 72.73      
5 A' 1835 1756 192.67      
6 A' 1461 1398 15.37      
7 A' 1406 1345 38.78      
8 A' 1376 1317 1.68      
9 A' 1261 1206 20.68      
10 A' 1024 979 3.93      
11 A' 792 757 13.40      
12 A' 578 553 15.03      
13 A' 490 469 24.94      
14 A' 255 244 17.08      
15 A" 3129 2993 1.71      
16 A" 1461 1398 10.53      
17 A" 1085 1037 4.00      
18 A" 903 864 0.34      
19 A" 467 447 0.56      
20 A" 98 94 21.52      
21 A" 74i 70i 3.38      

Unscaled Zero Point Vibrational Energy (zpe) 14305.0 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 13684.1 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 wB97X-D/aug-cc-pVTZ
ABC
0.30599 0.14857 0.10187

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.840 -0.733 0.000
C2 0.000 0.555 0.000
C3 1.491 0.396 0.000
O4 -0.362 -1.830 0.000
O5 -0.581 1.606 0.000
H6 -1.929 -0.546 0.000
H7 1.963 1.375 0.000
H8 1.802 -0.176 0.875
H9 1.802 -0.176 -0.875

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53712.59011.19622.35361.10543.50672.83762.8376
C21.53711.49972.41141.20192.22112.12742.13162.1316
C32.59011.49972.89642.40013.54801.08611.09031.0903
O41.19622.41142.89643.44302.02573.95882.86022.8602
O52.35361.20192.40013.44302.53982.55493.10153.1015
H61.10542.22113.54802.02572.53984.34043.84983.8498
H73.50672.12741.08613.95882.55494.34041.78741.7874
H82.83762.13161.09032.86023.10153.84981.78741.7495
H92.83762.13161.09032.86023.10153.84981.78741.7495

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 117.059 C1 C2 O5 117.959
C2 C1 O4 123.343 C2 C1 H6 113.388
C2 C3 H7 109.685 C2 C3 H8 109.773
C2 C3 H9 109.773 C3 C2 O5 124.982
O4 C1 H6 123.269 H7 C3 H8 110.427
H7 C3 H9 110.427 H8 C3 H9 106.711
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.101      
2 C 0.683      
3 C -0.638      
4 O -0.646      
5 O -0.725      
6 H 0.420      
7 H 0.225      
8 H 0.290      
9 H 0.290      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.034 -0.061 0.000 1.036
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.980 2.407 0.000
y 2.407 -38.125 0.000
z 0.000 0.000 -27.372
Traceless
 xyz
x 6.769 2.407 0.000
y 2.407 -11.449 0.000
z 0.000 0.000 4.680
Polar
3z2-r29.361
x2-y212.146
xy2.407
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.022 -0.347 0.000
y -0.347 7.503 0.000
z 0.000 0.000 4.576


<r2> (average value of r2) Å2
<r2> 111.509
(<r2>)1/2 10.560