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

using model chemistry: MP2=FULL/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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-266.577804
Energy at 298.15K-266.581969
HF Energy-265.699714
Nuclear repulsion energy159.615104
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 MP2=FULL/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' 3219 3049 4.01      
2 A' 3095 2931 0.34      
3 A' 3005 2846 83.05      
4 A' 1766 1672 22.76      
5 A' 1757 1664 97.63      
6 A' 1500 1420 17.93      
7 A' 1433 1357 43.64      
8 A' 1377 1304 1.77      
9 A' 1282 1214 17.47      
10 A' 1031 976 3.40      
11 A' 809 766 11.72      
12 A' 582 552 10.76      
13 A' 487 461 23.97      
14 A' 253 240 15.72      
15 A" 3177 3008 2.42      
16 A" 1502 1423 13.25      
17 A" 1089 1032 3.33      
18 A" 926 877 0.12      
19 A" 475 450 0.05      
20 A" 143 135 13.14      
21 A" 111 105 6.48      

Unscaled Zero Point Vibrational Energy (zpe) 14509.4 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 13741.8 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 MP2=FULL/6-311G*
ABC
0.30381 0.14744 0.10111

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.841 -0.724 0.000
C2 0.000 0.554 0.000
C3 1.491 0.383 0.000
O4 -0.358 -1.836 0.000
O5 -0.585 1.622 0.000
H6 -1.932 -0.538 0.000
H7 1.972 1.359 0.000
H8 1.801 -0.192 0.876
H9 1.801 -0.192 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.52962.58091.21292.36011.10743.50022.83362.8336
C21.52961.50082.41711.21822.21982.13032.13742.1374
C32.58091.50082.88832.41833.54511.08871.09251.0925
O41.21292.41712.88833.46642.04083.95482.85142.8514
O52.36011.21822.41833.46642.54632.57123.12353.1235
H61.10742.21983.54512.04082.54634.34133.85063.8506
H73.50022.13031.08873.95482.57124.34131.78981.7898
H82.83362.13741.09252.85143.12353.85061.78981.7512
H92.83362.13741.09252.85143.12353.85061.78981.7512

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 116.781 C1 C2 O5 117.943
C2 C1 O4 123.195 C2 C1 H6 113.698
C2 C3 H7 109.680 C2 C3 H8 110.016
C2 C3 H9 110.016 C3 C2 O5 125.276
O4 C1 H6 123.107 H7 C3 H8 110.278
H7 C3 H9 110.278 H8 C3 H9 106.531
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability