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

using model chemistry: MP4=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4=FULL/cc-pVTZ
 hartrees
Energy at 0K-266.823324
Energy at 298.15K-266.827425
HF Energy-265.736677
Nuclear repulsion energy159.970303
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 MP4=FULL/cc-pVTZ
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' 3173 3056        
2 A' 3070 2956        
3 A' 2978 2867        
4 A' 1741 1676        
5 A' 1724 1660        
6 A' 1473 1419        
7 A' 1400 1348        
8 A' 1366 1316        
9 A' 1267 1220        
10 A' 1011 974        
11 A' 797 768        
12 A' 569 548        
13 A' 475 457        
14 A' 248 238        
15 A" 3126 3010        
16 A" 1482 1427        
17 A" 1080 1040        
18 A" 915 881        
19 A" 471 454        
20 A" 129 124        
21 A" 103 100        

Unscaled Zero Point Vibrational Energy (zpe) 14299.0 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 13768.5 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 MP4=FULL/cc-pVTZ
ABC
0.30583 0.14801 0.10158

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.838 -0.721 0.000
C2 0.000 0.552 0.000
C3 1.486 0.380 0.000
O4 -0.355 -1.834 0.000
O5 -0.584 1.622 0.000
H6 -1.922 -0.533 0.000
H7 1.970 1.350 0.000
H8 1.786 -0.197 0.873
H9 1.786 -0.197 -0.873

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.52392.57141.21342.35631.09973.48882.81422.8142
C21.52391.49592.41201.21872.20692.12522.12432.1243
C32.57141.49592.87902.41373.52781.08411.08861.0886
O41.21342.41202.87903.46312.03633.94212.83212.8321
O52.35631.21872.41373.46312.53662.56783.11233.1123
H61.09972.20693.52782.03632.53664.32313.82363.8236
H73.48882.12521.08413.94212.56784.32311.78631.7863
H82.81422.12431.08862.83213.11233.82361.78631.7452
H92.81422.12431.08862.83213.11233.82361.78631.7452

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 116.755 C1 C2 O5 118.019
C2 C1 O4 123.166 C2 C1 H6 113.547
C2 C3 H7 109.890 C2 C3 H8 109.556
C2 C3 H9 109.556 C3 C2 O5 125.226
O4 C1 H6 123.286 H7 C3 H8 110.603
H7 C3 H9 110.603 H8 C3 H9 106.571
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability