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

using model chemistry: B3LYP/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/TZVP
 hartrees
Energy at 0K-267.250798
Energy at 298.15K-267.254825
HF Energy-267.250798
Nuclear repulsion energy159.793596
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 B3LYP/TZVP
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' 3155 3046 4.93      
2 A' 3045 2939 0.04      
3 A' 2936 2835 79.51      
4 A' 1804 1741 119.13      
5 A' 1787 1725 116.78      
6 A' 1461 1411 16.36      
7 A' 1398 1349 39.23      
8 A' 1367 1320 1.78      
9 A' 1238 1195 24.84      
10 A' 1012 977 2.72      
11 A' 775 749 14.41      
12 A' 570 550 15.05      
13 A' 487 470 22.76      
14 A' 250 241 16.14      
15 A" 3099 2992 2.50      
16 A" 1463 1413 12.03      
17 A" 1074 1037 2.75      
18 A" 905 874 0.18      
19 A" 468 452 0.51      
20 A" 121 117 17.07      
21 A" 73 70 7.34      

Unscaled Zero Point Vibrational Energy (zpe) 14243.8 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 13751.0 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 B3LYP/TZVP
ABC
0.30404 0.14713 0.10098

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.835 -0.739 0.000
C2 0.000 0.554 0.000
C3 1.494 0.412 0.000
O4 -0.353 -1.841 0.000
O5 -0.598 1.605 0.000
H6 -1.927 -0.555 0.000
H7 1.960 1.395 0.000
H8 1.814 -0.160 0.874
H9 1.814 -0.160 -0.874

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53962.59821.20252.35631.10723.51662.84952.8495
C21.53961.50062.42071.20952.22372.13242.13662.1366
C32.59821.50062.91312.40863.55521.08761.09271.0927
O41.20252.42072.91313.45462.03223.97712.87852.8785
O52.35631.20952.40863.45462.53642.56683.11463.1146
H61.10722.22373.55522.03222.53644.34863.86233.8623
H73.51662.13241.08763.97712.56684.34861.78971.7897
H82.84952.13661.09272.87853.11463.86231.78971.7485
H92.84952.13661.09272.87853.11463.86231.78971.7485

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 117.429 C1 C2 O5 117.486
C2 C1 O4 123.492 C2 C1 H6 113.299
C2 C3 H7 109.930 C2 C3 H8 109.954
C2 C3 H9 109.954 C3 C2 O5 125.085
O4 C1 H6 123.209 H7 C3 H8 110.336
H7 C3 H9 110.336 H8 C3 H9 106.270
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.109      
2 C 0.178      
3 C -0.347      
4 O -0.241      
5 O -0.240      
6 H 0.099      
7 H 0.155      
8 H 0.144      
9 H 0.144      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.032 -0.043 0.000 1.033
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.470 2.403 0.000
y 2.403 -38.708 0.000
z 0.000 0.000 -27.597
Traceless
 xyz
x 6.683 2.403 0.000
y 2.403 -11.675 0.000
z 0.000 0.000 4.992
Polar
3z2-r29.984
x2-y212.238
xy2.403
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.501 -0.476 0.000
y -0.476 7.106 0.000
z 0.000 0.000 3.973


<r2> (average value of r2) Å2
<r2> 112.582
(<r2>)1/2 10.610