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

using model chemistry: LSDA/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 LSDA/aug-cc-pVTZ
 hartrees
Energy at 0K-265.854395
Energy at 298.15K-265.858216
HF Energy-265.854395
Nuclear repulsion energy161.014034
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 LSDA/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' 3104 3075 1.29      
2 A' 2973 2945 2.51      
3 A' 2827 2800 73.71      
4 A' 1792 1775 166.95      
5 A' 1767 1750 56.72      
6 A' 1366 1353 18.11      
7 A' 1325 1313 72.17      
8 A' 1288 1276 0.52      
9 A' 1225 1213 5.62      
10 A' 965 956 6.11      
11 A' 799 792 13.04      
12 A' 558 553 9.89      
13 A' 467 462 24.28      
14 A' 240 238 17.69      
15 A" 3036 3008 0.42      
16 A" 1366 1353 13.98      
17 A" 1034 1024 5.16      
18 A" 847 839 0.81      
19 A" 446 442 0.01      
20 A" 110 109 13.97      
21 A" 23 22 8.65      

Unscaled Zero Point Vibrational Energy (zpe) 13778.0 cm-1
Scaled (by 0.9906) Zero Point Vibrational Energy (zpe) 13648.5 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 LSDA/aug-cc-pVTZ
ABC
0.31003 0.15065 0.10329

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.822 -0.723 0.000
C2 0.000 0.551 0.000
C3 1.465 0.391 0.000
O4 -0.331 -1.820 0.000
O5 -0.599 1.603 0.000
H6 -1.928 -0.535 0.000
H7 1.962 1.367 0.000
H8 1.771 -0.207 0.873
H9 1.771 -0.207 -0.873

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.51642.54441.20192.33691.12093.48092.78462.7846
C21.51641.47412.39361.21052.21272.12442.11502.1150
C32.54441.47412.84792.39383.51701.09481.10141.1014
O41.20192.39362.84793.43322.04923.92502.78912.7891
O52.33691.21052.39383.43322.51792.57123.10703.1070
H61.12092.21273.51702.04922.51794.32933.81433.8143
H73.48092.12441.09483.92502.57124.32931.80961.8096
H82.78462.11501.10142.78913.10703.81431.80961.7464
H92.78462.11501.10142.78913.10703.81431.80961.7464

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 116.598 C1 C2 O5 117.519
C2 C1 O4 123.001 C2 C1 H6 113.215
C2 C3 H7 110.712 C2 C3 H8 109.559
C2 C3 H9 109.559 C3 C2 O5 125.883
O4 C1 H6 123.784 H7 C3 H8 110.973
H7 C3 H9 110.973 H8 C3 H9 104.905
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.097      
2 C 0.537      
3 C -0.482      
4 O -0.548      
5 O -0.628      
6 H 0.369      
7 H 0.192      
8 H 0.231      
9 H 0.231      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.193 -0.129 0.000 1.200
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.358 2.373 0.000
y 2.373 -38.123 0.000
z 0.000 0.000 -27.727
Traceless
 xyz
x 6.567 2.373 0.000
y 2.373 -11.080 0.000
z 0.000 0.000 4.514
Polar
3z2-r29.027
x2-y211.765
xy2.373
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.633 -0.342 0.000
y -0.342 7.857 0.000
z 0.000 0.000 4.731


<r2> (average value of r2) Å2
<r2> 110.402
(<r2>)1/2 10.507