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

using model chemistry: BLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-31G*
 hartrees
Energy at 0K-267.075450
Energy at 298.15K-267.079338
HF Energy-267.075450
Nuclear repulsion energy157.866693
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 BLYP/6-31G*
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' 3094 3069 7.36      
2 A' 2981 2957 0.20      
3 A' 2841 2818 115.15      
4 A' 1732 1718 114.28      
5 A' 1717 1703 50.71      
6 A' 1449 1437 13.77      
7 A' 1371 1360 30.64      
8 A' 1333 1323 2.66      
9 A' 1198 1188 28.21      
10 A' 984 976 1.89      
11 A' 748 742 14.40      
12 A' 547 542 12.58      
13 A' 463 459 19.96      
14 A' 240 238 14.78      
15 A" 3032 3007 4.13      
16 A" 1454 1442 8.86      
17 A" 1042 1033 2.85      
18 A" 878 871 0.65      
19 A" 448 445 0.23      
20 A" 125 124 11.59      
21 A" 67 67 5.20      

Unscaled Zero Point Vibrational Energy (zpe) 13871.9 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 13759.6 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 BLYP/6-31G*
ABC
0.29695 0.14386 0.09869

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.850 -0.738 0.000
C2 0.000 0.564 0.000
C3 1.513 0.390 0.000
O4 -0.379 -1.861 0.000
O5 -0.583 1.640 0.000
H6 -1.951 -0.532 0.000
H7 1.999 1.375 0.000
H8 1.832 -0.189 0.883
H9 1.832 -0.189 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.55522.61861.21762.39321.12043.54712.87662.8766
C21.55521.52322.45471.22352.23792.15732.16872.1687
C32.61861.52322.94072.44033.58481.09791.10271.1027
O41.21762.45472.94073.50702.05884.01562.90952.9095
O52.39321.22352.44033.50702.56702.59563.15523.1552
H61.12042.23793.58482.05882.56704.38633.90003.9000
H73.54712.15731.09794.01562.59564.38631.80301.8030
H82.87662.16871.10272.90953.15523.90001.80301.7652
H92.87662.16871.10272.90953.15523.90001.80301.7652

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 116.562 C1 C2 O5 118.433
C2 C1 O4 124.120 C2 C1 H6 112.509
C2 C3 H7 109.718 C2 C3 H8 110.332
C2 C3 H9 110.332 C3 C2 O5 125.005
O4 C1 H6 123.371 H7 C3 H8 110.034
H7 C3 H9 110.034 H8 C3 H9 106.341
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.180      
2 C 0.389      
3 C -0.486      
4 O -0.329      
5 O -0.386      
6 H 0.114      
7 H 0.167      
8 H 0.175      
9 H 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.004 -0.019 0.000 1.004
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.242 1.897 0.000
y 1.897 -36.800 0.000
z 0.000 0.000 -27.059
Traceless
 xyz
x 5.688 1.897 0.000
y 1.897 -10.150 0.000
z 0.000 0.000 4.462
Polar
3z2-r28.924
x2-y210.558
xy1.897
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.094 -0.318 0.000
y -0.318 6.564 0.000
z 0.000 0.000 3.326


<r2> (average value of r2) Å2
<r2> 114.141
(<r2>)1/2 10.684