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

using model chemistry: CCD/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 CCD/6-311G**
 hartrees
Energy at 0K-266.529520
Energy at 298.15K-266.533717
HF Energy-265.708232
Nuclear repulsion energy159.912984
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 CCD/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' 3193 3050 6.00      
2 A' 3080 2941 1.03      
3 A' 3009 2874 74.77      
4 A' 1864 1780 15.95      
5 A' 1849 1766 143.51      
6 A' 1489 1422 12.09      
7 A' 1428 1364 29.00      
8 A' 1392 1330 4.24      
9 A' 1285 1228 19.96      
10 A' 1033 987 3.11      
11 A' 807 771 10.93      
12 A' 589 563 11.55      
13 A' 493 471 28.34      
14 A' 254 243 15.21      
15 A" 3153 3012 5.48      
16 A" 1494 1427 9.29      
17 A" 1094 1045 1.71      
18 A" 930 888 0.08      
19 A" 477 456 0.55      
20 A" 145 138 13.20      
21 A" 111 106 7.34      

Unscaled Zero Point Vibrational Energy (zpe) 14584.5 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 13929.6 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 CCD/6-311G**
ABC
0.30328 0.14814 0.10139

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.850 -0.724 0.000
C2 0.000 0.555 0.000
C3 1.499 0.377 0.000
O4 -0.371 -1.826 0.000
O5 -0.572 1.617 0.000
H6 -1.940 -0.532 0.000
H7 1.983 1.355 0.000
H8 1.803 -0.200 0.880
H9 1.803 -0.200 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53522.59361.20222.35741.10723.51322.84342.8434
C21.53521.50942.40991.20672.22422.13802.14332.1433
C32.59361.50942.88932.41413.55721.09121.09481.0948
O41.20222.40992.88933.44952.03423.95692.85382.8538
O52.35741.20672.41413.44952.54822.56833.11703.1170
H61.10722.22423.55722.03422.54824.35333.85953.8595
H73.51322.13801.09123.95692.56834.35331.79511.7951
H82.84342.14331.09482.85383.11703.85951.79511.7596
H92.84342.14331.09482.85383.11703.85951.79511.7596

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 116.827 C1 C2 O5 118.090
C2 C1 O4 122.907 C2 C1 H6 113.656
C2 C3 H7 109.545 C2 C3 H8 109.750
C2 C3 H9 109.750 C3 C2 O5 125.083
O4 C1 H6 123.437 H7 C3 H8 110.406
H7 C3 H9 110.406 H8 C3 H9 106.947
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability