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

using model chemistry: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-265.556953
Energy at 298.15K-265.561296
HF Energy-265.556953
Nuclear repulsion energy159.876917
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 HF/LANL2DZ
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' 3351 3015 11.81      
2 A' 3294 2964 39.50      
3 A' 3226 2903 4.27      
4 A' 1923 1731 9.13      
5 A' 1873 1686 271.26      
6 A' 1617 1455 26.58      
7 A' 1571 1414 30.58      
8 A' 1487 1338 6.59      
9 A' 1387 1248 23.65      
10 A' 1135 1022 5.00      
11 A' 856 770 9.91      
12 A' 635 571 15.27      
13 A' 525 472 41.16      
14 A' 271 244 23.06      
15 A" 3308 2977 14.12      
16 A" 1620 1458 18.35      
17 A" 1205 1084 6.15      
18 A" 1024 921 0.12      
19 A" 530 477 1.31      
20 A" 149 134 32.92      
21 A" 96 86 9.85      

Unscaled Zero Point Vibrational Energy (zpe) 15540.6 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 13984.9 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 HF/LANL2DZ
ABC
0.30303 0.14820 0.10135

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.842 -0.725 0.000
C2 0.000 0.540 0.000
C3 1.496 0.406 0.000
O4 -0.353 -1.837 0.000
O5 -0.597 1.605 0.000
H6 -1.913 -0.555 0.000
H7 1.949 1.386 0.000
H8 1.822 -0.150 0.871
H9 1.822 -0.150 -0.871

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.51942.59781.21512.34221.08353.49942.86142.8614
C21.51941.50222.40261.22112.20402.12462.13372.1337
C32.59781.50222.90692.41263.54191.07901.08301.0830
O41.21512.40262.90693.45022.01863.96012.88692.8869
O52.34221.22112.41263.45022.52892.55593.11283.1128
H61.08352.20403.54192.01862.52894.32203.85613.8561
H73.49942.12461.07903.96012.55594.32201.76951.7695
H82.86142.13371.08302.88693.11283.85611.76951.7410
H92.86142.13371.08302.88693.11283.85611.76951.7410

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 118.570 C1 C2 O5 117.030
C2 C1 O4 122.566 C2 C1 H6 114.683
C2 C3 H7 109.705 C2 C3 H8 110.191
C2 C3 H9 110.191 C3 C2 O5 124.399
O4 C1 H6 122.752 H7 C3 H8 109.861
H7 C3 H9 109.861 H8 C3 H9 106.994
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.021      
2 C 0.340      
3 C -0.603      
4 O -0.299      
5 O -0.333      
6 H 0.215      
7 H 0.225      
8 H 0.216      
9 H 0.216      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.947 -0.014 0.000 0.947
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.884 3.095 0.000
y 3.095 -41.944 0.000
z 0.000 0.000 -27.832
Traceless
 xyz
x 9.004 3.095 0.000
y 3.095 -15.087 0.000
z 0.000 0.000 6.082
Polar
3z2-r212.165
x2-y216.061
xy3.095
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.831 -0.892 0.000
y -0.892 6.387 0.000
z 0.000 0.000 3.063


<r2> (average value of r2) Å2
<r2> 112.824
(<r2>)1/2 10.622