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

using model chemistry: HF/daug-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 HF/daug-cc-pVTZ
 hartrees
Energy at 0K-265.745231
Energy at 298.15K-265.749557
HF Energy-265.745231
Nuclear repulsion energy161.718456
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 HF/daug-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' 3286 2972 9.36      
2 A' 3181 2878 0.85      
3 A' 3152 2852 58.93      
4 A' 2013 1821 13.46      
5 A' 1985 1796 353.93      
6 A' 1577 1427 14.90      
7 A' 1530 1384 21.98      
8 A' 1478 1337 7.35      
9 A' 1362 1232 24.59      
10 A' 1107 1002 4.07      
11 A' 837 757 11.53      
12 A' 621 562 17.86      
13 A' 527 477 36.41      
14 A' 267 241 19.34      
15 A" 3239 2930 7.32      
16 A" 1586 1435 8.72      
17 A" 1197 1083 2.71      
18 A" 1007 911 0.50      
19 A" 516 467 2.35      
20 A" 140 127 11.98      
21 A" 107 97 20.33      

Unscaled Zero Point Vibrational Energy (zpe) 15357.5 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 13892.4 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 HF/daug-cc-pVTZ
ABC
0.30827 0.15108 0.10329

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.839 -0.731 0.000
C2 0.000 0.548 0.000
C3 1.493 0.404 0.000
O4 -0.365 -1.810 0.000
O5 -0.581 1.580 0.000
H6 -1.916 -0.551 0.000
H7 1.949 1.382 0.000
H8 1.807 -0.159 0.870
H9 1.807 -0.159 -0.870

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53002.59371.17822.32531.09163.49812.84362.8436
C21.53001.49972.38591.18412.20902.11952.12622.1262
C32.59371.49972.89002.38403.54021.07851.08301.0830
O41.17822.38592.89003.39641.99733.94172.86342.8634
O52.32531.18412.38403.39642.51472.53773.07913.0791
H61.09162.20903.54021.99732.51474.32123.84313.8431
H73.49812.11951.07853.94172.53774.32121.77481.7748
H82.84362.12621.08302.86343.07913.84311.77481.7409
H92.84362.12621.08302.86343.07913.84311.77481.7409

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 117.756 C1 C2 O5 117.340
C2 C1 O4 122.993 C2 C1 H6 113.785
C2 C3 H7 109.503 C2 C3 H8 109.773
C2 C3 H9 109.773 C3 C2 O5 124.903
O4 C1 H6 123.223 H7 C3 H8 110.389
H7 C3 H9 110.389 H8 C3 H9 106.981
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.276      
2 C 1.575      
3 C -0.962      
4 O -1.137      
5 O -1.358      
6 H 0.859      
7 H 0.487      
8 H 0.406      
9 H 0.406      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.950 -0.017 0.000 0.950
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.878 2.496 0.000
y 2.496 -39.089 0.000
z 0.000 0.000 -27.465
Traceless
 xyz
x 7.399 2.496 0.000
y 2.496 -12.417 0.000
z 0.000 0.000 5.018
Polar
3z2-r210.036
x2-y213.211
xy2.496
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.289 -0.388 0.000
y -0.388 6.930 0.000
z 0.000 0.000 4.324


<r2> (average value of r2) Å2
<r2> 110.539
(<r2>)1/2 10.514