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

using model chemistry: HSEh1PBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/cc-pVDZ
 hartrees
Energy at 0K-266.890055
Energy at 298.15K-266.894102
HF Energy-266.890055
Nuclear repulsion energy160.091955
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 HSEh1PBE/cc-pVDZ
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' 3203 3081 2.66      
2 A' 3070 2953 0.10      
3 A' 2950 2837 90.36      
4 A' 1851 1780 61.14      
5 A' 1841 1771 161.06      
6 A' 1422 1368 16.05      
7 A' 1374 1322 46.29      
8 A' 1341 1290 1.72      
9 A' 1260 1212 15.04      
10 A' 1002 964 4.68      
11 A' 806 775 12.31      
12 A' 577 555 10.70      
13 A' 482 464 25.94      
14 A' 247 238 16.20      
15 A" 3148 3028 0.63      
16 A" 1429 1375 11.40      
17 A" 1078 1037 3.08      
18 A" 898 863 1.60      
19 A" 473 455 0.13      
20 A" 144 138 12.86      
21 A" 61 59 6.02      

Unscaled Zero Point Vibrational Energy (zpe) 14327.7 cm-1
Scaled (by 0.9619) Zero Point Vibrational Energy (zpe) 13781.8 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 HSEh1PBE/cc-pVDZ
ABC
0.30515 0.14861 0.10182

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.837 -0.725 0.000
C2 0.000 0.554 0.000
C3 1.487 0.386 0.000
O4 -0.355 -1.828 0.000
O5 -0.586 1.613 0.000
H6 -1.938 -0.526 0.000
H7 1.978 1.365 0.000
H8 1.795 -0.201 0.879
H9 1.795 -0.201 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.52872.57571.20372.35171.11823.50662.82392.8239
C21.52871.49612.40831.21042.21832.13822.13642.1364
C32.57571.49612.87972.40863.54361.09601.10111.1011
O41.20372.40832.87973.44892.04923.95502.83582.8358
O52.35171.21042.40863.44892.53062.57603.11943.1194
H61.11822.21833.54362.04922.53064.34873.84823.8482
H73.50662.13821.09603.95502.57604.34871.80571.8057
H82.82392.13641.10112.83583.11943.84821.80571.7588
H92.82392.13641.10112.83583.11943.84821.80571.7588

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 116.751 C1 C2 O5 117.849
C2 C1 O4 123.183 C2 C1 H6 112.958
C2 C3 H7 110.197 C2 C3 H8 109.746
C2 C3 H9 109.746 C3 C2 O5 125.400
O4 C1 H6 123.859 H7 C3 H8 110.535
H7 C3 H9 110.535 H8 C3 H9 105.999
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.166      
2 C -0.016      
3 C -0.062      
4 O -0.169      
5 O -0.181      
6 H 0.030      
7 H 0.068      
8 H 0.082      
9 H 0.082      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.957 -0.068 0.000 0.959
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.069 1.855 0.000
y 1.855 -36.753 0.000
z 0.000 0.000 -27.098
Traceless
 xyz
x 5.857 1.855 0.000
y 1.855 -10.170 0.000
z 0.000 0.000 4.313
Polar
3z2-r28.626
x2-y210.684
xy1.855
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.086 -0.344 0.000
y -0.344 6.302 0.000
z 0.000 0.000 3.403


<r2> (average value of r2) Å2
<r2> 111.257
(<r2>)1/2 10.548