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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-267.080972
Energy at 298.15K-267.084843
HF Energy-267.080972
Nuclear repulsion energy157.920229
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' 3096 3073 6.67      
2 A' 2980 2957 0.14      
3 A' 2834 2812 110.78      
4 A' 1731 1718 115.42      
5 A' 1716 1703 49.51      
6 A' 1432 1421 12.80      
7 A' 1356 1345 30.97      
8 A' 1325 1315 2.19      
9 A' 1193 1184 27.46      
10 A' 977 969 2.14      
11 A' 746 741 14.60      
12 A' 545 541 12.35      
13 A' 461 458 20.28      
14 A' 239 237 14.93      
15 A" 3034 3011 3.73      
16 A" 1438 1427 8.42      
17 A" 1036 1028 2.65      
18 A" 873 867 0.69      
19 A" 447 444 0.21      
20 A" 125 124 11.77      
21 A" 58 58 5.04      

Unscaled Zero Point Vibrational Energy (zpe) 13821.6 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 13715.1 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
0.29725 0.14393 0.09875

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 -0.844 -0.739 0.000
C2 0.000 0.560 0.000
C3 1.509 0.403 0.000
O4 -0.360 -1.862 0.000
O5 -0.601 1.632 0.000
H6 -1.947 -0.540 0.000
H7 1.991 1.388 0.000
H8 1.827 -0.179 0.881
H9 1.827 -0.179 -0.881

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.54992.61591.22252.38431.12003.54492.86822.8682
C21.54991.51692.44841.22912.23592.15632.15862.1586
C32.61591.51692.93592.44183.58171.09691.10261.1026
O41.22252.44842.93593.50242.06534.01082.89632.8963
O52.38431.22912.44183.50242.55542.60343.15453.1545
H61.12002.23593.58172.06532.55544.38433.89173.8917
H73.54492.15631.09694.01082.60344.38431.80511.8051
H82.86822.15861.10262.89633.15453.89171.80511.7618
H92.86822.15861.10262.89633.15453.89171.80511.7618

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 117.067 C1 C2 O5 117.716
C2 C1 O4 123.616 C2 C1 H6 112.757
C2 C3 H7 110.131 C2 C3 H8 109.978
C2 C3 H9 109.978 C3 C2 O5 125.217
O4 C1 H6 123.627 H7 C3 H8 110.310
H7 C3 H9 110.310 H8 C3 H9 106.061
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 0.235      
2 C 0.361      
3 C -0.347      
4 O -0.338      
5 O -0.386      
6 H 0.077      
7 H 0.127      
8 H 0.136      
9 H 0.136      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.015 -0.024 0.000 1.016
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.184 1.903 0.000
y 1.903 -36.802 0.000
z 0.000 0.000 -27.063
Traceless
 xyz
x 5.749 1.903 0.000
y 1.903 -10.179 0.000
z 0.000 0.000 4.429
Polar
3z2-r28.859
x2-y210.619
xy1.903
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.146 -0.314 0.000
y -0.314 6.594 0.000
z 0.000 0.000 3.366


<r2> (average value of r2) Å2
<r2> 114.053
(<r2>)1/2 10.680