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

using model chemistry: MP2=FULL/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-266.488432
Energy at 298.15K-266.492535
HF Energy-265.674900
Nuclear repulsion energy158.754746
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/aug-cc-pVDZ
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' 3215 3116 3.52      
2 A' 3079 2984 0.14      
3 A' 3015 2922 61.85      
4 A' 1719 1666 30.54      
5 A' 1712 1660 113.23      
6 A' 1448 1403 15.17      
7 A' 1386 1343 32.10      
8 A' 1349 1307 1.18      
9 A' 1272 1232 12.21      
10 A' 1007 976 3.66      
11 A' 807 782 11.32      
12 A' 570 553 10.73      
13 A' 479 464 25.51      
14 A' 246 238 16.11      
15 A" 3165 3068 1.68      
16 A" 1458 1413 9.23      
17 A" 1064 1031 2.76      
18 A" 899 872 0.03      
19 A" 463 448 0.36      
20 A" 134 130 7.24      
21 A" 105 102 16.14      

Unscaled Zero Point Vibrational Energy (zpe) 14294.7 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 13854.4 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/aug-cc-pVDZ
ABC
0.30113 0.14603 0.10018

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.841 -0.729 0.000
C2 0.000 0.552 0.000
C3 1.495 0.397 0.000
O4 -0.347 -1.849 0.000
O5 -0.599 1.626 0.000
H6 -1.939 -0.550 0.000
H7 1.971 1.385 0.000
H8 1.804 -0.184 0.883
H9 1.804 -0.184 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53222.59381.22422.36771.11293.51772.84122.8412
C21.53221.50342.42551.23032.23052.13972.13862.1386
C32.59381.50342.90502.42853.56311.09591.10071.1007
O41.22422.42552.90503.48442.05543.97832.85972.8597
O52.36771.23032.42853.48442.55592.58123.13503.1350
H61.11292.23053.56312.05542.55594.36273.86353.8635
H73.51772.13971.09593.97832.58124.36271.80721.8072
H82.84122.13861.10072.85973.13503.86351.80721.7655
H92.84122.13861.10072.85973.13503.86351.80721.7655

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 117.399 C1 C2 O5 117.569
C2 C1 O4 122.888 C2 C1 H6 114.033
C2 C3 H7 109.814 C2 C3 H8 109.445
C2 C3 H9 109.445 C3 C2 O5 125.032
O4 C1 H6 123.079 H7 C3 H8 110.718
H7 C3 H9 110.718 H8 C3 H9 106.641
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability