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

using model chemistry: PBEPBE/aug-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 PBEPBE/aug-cc-pVDZ
 hartrees
Energy at 0K-266.883513
Energy at 298.15K-266.887379
HF Energy-266.883513
Nuclear repulsion energy158.443876
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 PBEPBE/aug-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' 3112 3093 3.91      
2 A' 2979 2961 0.06      
3 A' 2846 2829 89.80      
4 A' 1728 1718 147.28      
5 A' 1708 1698 68.04      
6 A' 1374 1366 15.68      
7 A' 1315 1307 47.24      
8 A' 1293 1285 0.17      
9 A' 1203 1195 13.75      
10 A' 963 957 3.57      
11 A' 769 764 13.68      
12 A' 547 544 11.93      
13 A' 463 460 21.88      
14 A' 237 235 15.45      
15 A" 3047 3028 1.01      
16 A" 1378 1370 10.23      
17 A" 1022 1016 3.41      
18 A" 850 845 0.26      
19 A" 447 444 0.08      
20 A" 107 107 8.93      
21 A" 64 63 12.40      

Unscaled Zero Point Vibrational Energy (zpe) 13725.9 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 13642.2 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 PBEPBE/aug-cc-pVDZ
ABC
0.30012 0.14493 0.09955

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.833 -0.744 0.000
C2 0.000 0.555 0.000
C3 1.497 0.423 0.000
O4 -0.341 -1.859 0.000
O5 -0.616 1.617 0.000
H6 -1.942 -0.558 0.000
H7 1.968 1.418 0.000
H8 1.819 -0.164 0.883
H9 1.819 -0.164 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.54312.60551.21932.37111.12473.53792.85492.8549
C21.54311.50292.43861.22752.23872.14872.14622.1462
C32.60551.50292.93012.42703.57631.10101.10751.1075
O41.21932.43862.93013.48762.06324.00882.88482.8848
O52.37111.22752.42703.48762.54822.59113.14323.1432
H61.12472.23873.57632.06322.54824.38103.88383.8838
H73.53792.14871.10104.00882.59114.38101.81711.8171
H82.85492.14621.10752.88483.14323.88381.81711.7652
H92.85492.14621.10752.88483.14323.88381.81711.7652

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 117.599 C1 C2 O5 117.244
C2 C1 O4 123.539 C2 C1 H6 113.174
C2 C3 H7 110.253 C2 C3 H8 109.676
C2 C3 H9 109.676 C3 C2 O5 125.157
O4 C1 H6 123.287 H7 C3 H8 110.727
H7 C3 H9 110.727 H8 C3 H9 105.682
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.818      
2 C 0.256      
3 C 0.495      
4 O -0.483      
5 O -0.522      
6 H -0.228      
7 H -0.221      
8 H -0.057      
9 H -0.057      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.151 -0.048 0.000 1.152
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.694 2.402 0.000
y 2.402 -38.375 0.000
z 0.000 0.000 -27.815
Traceless
 xyz
x 6.401 2.402 0.000
y 2.402 -11.121 0.000
z 0.000 0.000 4.720
Polar
3z2-r29.439
x2-y211.681
xy2.402
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.761 -0.309 0.000
y -0.309 8.094 0.000
z 0.000 0.000 4.732


<r2> (average value of r2) Å2
<r2> 113.931
(<r2>)1/2 10.674