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

using model chemistry: wB97X-D/6-311G**

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/6-311G**
 hartrees
Energy at 0K-267.132456
Energy at 298.15K 
HF Energy-267.132456
Nuclear repulsion energy160.258119
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/6-311G**
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' 3185 3046 5.28      
2 A' 3061 2928 0.19      
3 A' 2956 2828 87.20      
4 A' 1860 1779 33.18      
5 A' 1850 1769 210.95      
6 A' 1460 1396 15.77      
7 A' 1402 1341 44.24      
8 A' 1368 1308 2.47      
9 A' 1258 1204 22.23      
10 A' 1018 974 3.91      
11 A' 791 757 13.50      
12 A' 580 555 13.97      
13 A' 489 468 26.20      
14 A' 253 242 17.17      
15 A" 3129 2993 3.10      
16 A" 1461 1398 12.66      
17 A" 1082 1035 3.50      
18 A" 905 866 0.68      
19 A" 472 451 0.26      
20 A" 120 115 19.24      
21 A" 71i 68i 3.27      

Unscaled Zero Point Vibrational Energy (zpe) 14315.4 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 13692.7 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/6-311G**
ABC
0.30503 0.14851 0.10174

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.843 -0.730 0.000
C2 0.000 0.556 0.000
C3 1.493 0.386 0.000
O4 -0.367 -1.828 0.000
O5 -0.576 1.612 0.000
H6 -1.934 -0.536 0.000
H7 1.971 1.365 0.000
H8 1.803 -0.188 0.877
H9 1.803 -0.188 -0.877

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53812.58971.19732.35741.10823.50832.84022.8402
C21.53811.50302.41281.20282.22162.13032.13862.1386
C32.58971.50302.89242.40513.54971.08881.09291.0929
O41.19732.41282.89243.44702.03163.95762.85832.8583
O52.35741.20282.40513.44702.54182.55893.10953.1095
H61.10822.22163.54972.03162.54184.34343.85483.8548
H73.50832.13031.08883.95762.55894.34341.79091.7909
H82.84022.13861.09292.85833.10953.85481.79091.7535
H92.84022.13861.09292.85833.10953.85481.79091.7535

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 116.759 C1 C2 O5 118.139
C2 C1 O4 123.300 C2 C1 H6 113.174
C2 C3 H7 109.525 C2 C3 H8 109.942
C2 C3 H9 109.942 C3 C2 O5 125.102
O4 C1 H6 123.526 H7 C3 H8 110.352
H7 C3 H9 110.352 H8 C3 H9 106.692
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.151      
2 C 0.134      
3 C -0.333      
4 O -0.254      
5 O -0.268      
6 H 0.114      
7 H 0.152      
8 H 0.153      
9 H 0.153      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.920 -0.062 0.000 0.923
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.973 2.132 0.000
y 2.132 -37.659 0.000
z 0.000 0.000 -27.210
Traceless
 xyz
x 6.462 2.132 0.000
y 2.132 -11.068 0.000
z 0.000 0.000 4.606
Polar
3z2-r29.212
x2-y211.686
xy2.132
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.058 -0.410 0.000
y -0.410 6.433 0.000
z 0.000 0.000 3.563


<r2> (average value of r2) Å2
<r2> 111.504
(<r2>)1/2 10.560