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

using model chemistry: B3LYPultrafine/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYPultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-267.188419
Energy at 298.15K-267.192469
HF Energy-267.188419
Nuclear repulsion energy159.304464
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 B3LYPultrafine/aug-cc-pVDZ
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' 3163 3069 4.82      
2 A' 3042 2952 0.02      
3 A' 2943 2856 73.31      
4 A' 1790 1737 120.19      
5 A' 1775 1723 121.71      
6 A' 1428 1386 15.40      
7 A' 1372 1332 38.15      
8 A' 1345 1305 0.97      
9 A' 1242 1205 17.83      
10 A' 1002 973 3.32      
11 A' 783 760 13.17      
12 A' 567 550 13.96      
13 A' 481 467 25.42      
14 A' 247 240 16.60      
15 A" 3104 3012 2.21      
16 A" 1435 1392 9.62      
17 A" 1068 1036 3.21      
18 A" 896 869 0.28      
19 A" 468 454 0.45      
20 A" 124 120 10.58      
21 A" 88 86 14.02      

Unscaled Zero Point Vibrational Energy (zpe) 14181.4 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 13761.7 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 B3LYPultrafine/aug-cc-pVDZ
ABC
0.30220 0.14655 0.10053

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.836 -0.740 0.000
C2 0.000 0.552 0.000
C3 1.497 0.418 0.000
O4 -0.348 -1.846 0.000
O5 -0.605 1.607 0.000
H6 -1.935 -0.559 0.000
H7 1.960 1.410 0.000
H8 1.818 -0.158 0.880
H9 1.818 -0.158 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.53932.60451.20872.35831.11403.52682.85562.8556
C21.53931.50282.42351.21602.23122.13912.14092.1409
C32.60451.50282.92072.41493.56811.09421.09981.0998
O41.20872.42352.92073.46252.04363.99072.88312.8831
O52.35831.21602.41493.46252.54102.57273.12443.1244
H61.11402.23123.56812.04362.54104.36393.87523.8752
H73.52682.13911.09423.99072.57274.36391.80371.8037
H82.85562.14091.09982.88313.12443.87521.80371.7594
H92.85562.14091.09982.88313.12443.87521.80371.7594

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 117.776 C1 C2 O5 117.247
C2 C1 O4 123.298 C2 C1 H6 113.507
C2 C3 H7 109.916 C2 C3 H8 109.723
C2 C3 H9 109.723 C3 C2 O5 124.976
O4 C1 H6 123.194 H7 C3 H8 110.591
H7 C3 H9 110.591 H8 C3 H9 106.232
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.902      
2 C 0.162      
3 C 0.753      
4 O -0.479      
5 O -0.506      
6 H -0.295      
7 H -0.290      
8 H -0.124      
9 H -0.124      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.077 -0.039 0.000 1.077
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.528 2.481 0.000
y 2.481 -38.791 0.000
z 0.000 0.000 -27.723
Traceless
 xyz
x 6.729 2.481 0.000
y 2.481 -11.666 0.000
z 0.000 0.000 4.936
Polar
3z2-r29.873
x2-y212.263
xy2.481
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.254 -0.344 0.000
y -0.344 7.727 0.000
z 0.000 0.000 4.593


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