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

using model chemistry: B97D3/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/6-311+G(3df,2p)
 hartrees
Energy at 0K-267.089265
Energy at 298.15K-267.093171
HF Energy-267.089265
Nuclear repulsion energy159.235876
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 B97D3/6-311+G(3df,2p)
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' 3103 3063 7.24      
2 A' 2985 2946 0.10      
3 A' 2841 2804 104.50      
4 A' 1748 1725 153.79      
5 A' 1727 1705 77.99      
6 A' 1428 1410 15.74      
7 A' 1356 1338 36.38      
8 A' 1328 1311 1.53      
9 A' 1199 1184 23.37      
10 A' 984 971 2.54      
11 A' 754 744 15.88      
12 A' 550 542 15.31      
13 A' 469 463 19.83      
14 A' 246 243 15.22      
15 A" 3042 3002 2.97      
16 A" 1431 1412 9.60      
17 A" 1046 1032 2.76      
18 A" 871 860 0.31      
19 A" 448 442 0.34      
20 A" 105 104 7.20      
21 A" 69 69 14.76      

Unscaled Zero Point Vibrational Energy (zpe) 13864.6 cm-1
Scaled (by 0.987) Zero Point Vibrational Energy (zpe) 13684.4 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 B97D3/6-311+G(3df,2p)
ABC
0.30260 0.14592 0.10026

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.836 -0.742 0.000
C2 0.000 0.560 0.000
C3 1.496 0.410 0.000
O4 -0.352 -1.848 0.000
O5 -0.600 1.615 0.000
H6 -1.934 -0.553 0.000
H7 1.974 1.390 0.000
H8 1.809 -0.170 0.875
H9 1.809 -0.170 -0.875

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.54692.60111.20682.36911.11423.52712.84392.8439
C21.54691.50352.43311.21442.23112.14142.13812.1381
C32.60111.50352.91842.41793.56271.09001.09591.0959
O41.20682.43312.91843.47192.04373.98712.87262.8726
O52.36911.21442.41793.47192.54562.58383.12403.1240
H61.11422.23113.56272.04372.54564.36413.86283.8628
H73.52712.14141.09003.98712.58384.36411.79681.7968
H82.84392.13811.09592.87263.12403.86281.79681.7499
H92.84392.13811.09592.87263.12403.86281.79681.7499

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 116.750 C1 C2 O5 118.302
C2 C1 O4 123.937 C2 C1 H6 112.857
C2 C3 H7 109.802 C2 C3 H8 109.937
C2 C3 H9 109.937 C3 C2 O5 124.948
O4 C1 H6 123.206 H7 C3 H8 110.367
H7 C3 H9 110.367 H8 C3 H9 106.378
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.409      
2 C 0.402      
3 C -0.125      
4 O -0.581      
5 O -0.651      
6 H 0.118      
7 H 0.131      
8 H 0.149      
9 H 0.149      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.108 -0.054 0.000 1.110
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.456 2.331 0.000
y 2.331 -38.214 0.000
z 0.000 0.000 -27.527
Traceless
 xyz
x 6.415 2.331 0.000
y 2.331 -11.223 0.000
z 0.000 0.000 4.808
Polar
3z2-r29.616
x2-y211.758
xy2.331
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.507 -0.282 0.000
y -0.282 7.862 0.000
z 0.000 0.000 4.606


<r2> (average value of r2) Å2
<r2> 113.083
(<r2>)1/2 10.634