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

using model chemistry: B3LYP/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-267.252919
Energy at 298.15K-267.256960
HF Energy-267.252919
Nuclear repulsion energy159.993981
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/cc-pVTZ
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' 3150 3045 5.22      
2 A' 3041 2939 0.03      
3 A' 2927 2829 85.96      
4 A' 1805 1745 122.45      
5 A' 1789 1729 100.46      
6 A' 1457 1409 15.43      
7 A' 1393 1347 36.28      
8 A' 1360 1314 1.45      
9 A' 1242 1200 22.39      
10 A' 1012 978 2.68      
11 A' 777 751 14.97      
12 A' 569 550 14.64      
13 A' 483 467 24.56      
14 A' 247 239 15.93      
15 A" 3093 2990 2.48      
16 A" 1462 1413 9.65      
17 A" 1082 1046 2.88      
18 A" 909 879 0.46      
19 A" 468 452 0.40      
20 A" 126 121 13.55      
21 A" 76 74 8.50      

Unscaled Zero Point Vibrational Energy (zpe) 14233.8 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 13758.4 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 B3LYP/cc-pVTZ
ABC
0.30459 0.14761 0.10126

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.835 -0.737 0.000
C2 0.000 0.553 0.000
C3 1.493 0.409 0.000
O4 -0.354 -1.838 0.000
O5 -0.597 1.604 0.000
H6 -1.925 -0.547 0.000
H7 1.960 1.390 0.000
H8 1.811 -0.164 0.873
H9 1.811 -0.164 -0.873

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53602.59441.20132.35251.10663.51162.84412.8441
C21.53601.49982.41651.20852.21702.13112.13422.1342
C32.59441.49982.90872.40683.54911.08621.09161.0916
O41.20132.41652.90873.44992.03283.97152.87242.8724
O52.35251.20852.40683.44992.52812.56523.11173.1117
H61.10662.21703.54912.03282.52814.34093.85553.8555
H73.51162.13111.08623.97152.56524.34091.78861.7886
H82.84412.13421.09162.87243.11173.85551.78861.7456
H92.84412.13421.09162.87243.11173.85551.78861.7456

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 117.427 C1 C2 O5 117.502
C2 C1 O4 123.506 C2 C1 H6 113.060
C2 C3 H7 109.961 C2 C3 H8 109.891
C2 C3 H9 109.891 C3 C2 O5 125.071
O4 C1 H6 123.433 H7 C3 H8 110.425
H7 C3 H9 110.425 H8 C3 H9 106.183
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.110      
2 C 0.188      
3 C -0.281      
4 O -0.218      
5 O -0.233      
6 H 0.085      
7 H 0.120      
8 H 0.114      
9 H 0.114      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.008 -0.029 0.000 1.008
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.380 2.187 0.000
y 2.187 -37.879 0.000
z 0.000 0.000 -27.492
Traceless
 xyz
x 6.306 2.187 0.000
y 2.187 -10.943 0.000
z 0.000 0.000 4.638
Polar
3z2-r29.275
x2-y211.499
xy2.187
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.656 -0.298 0.000
y -0.298 6.954 0.000
z 0.000 0.000 4.024


<r2> (average value of r2) Å2
<r2> 112.105
(<r2>)1/2 10.588