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All results from a given calculation for CHOCOOH (oxo acetic acid)

using model chemistry: PBEPBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31G*
 hartrees
Energy at 0K-302.752024
Energy at 298.15K-302.755098
HF Energy-302.752024
Nuclear repulsion energy161.898567
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 PBEPBE/6-31G*
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' 3398 3350 79.94      
2 A' 2944 2902 56.24      
3 A' 1812 1786 151.71      
4 A' 1744 1719 63.05      
5 A' 1369 1349 335.48      
6 A' 1311 1292 7.60      
7 A' 1188 1171 1.07      
8 A' 862 849 42.23      
9 A' 666 657 11.67      
10 A' 479 472 4.02      
11 A' 285 281 34.81      
12 A" 957 944 2.36      
13 A" 732 722 86.79      
14 A" 541 534 18.67      
15 A" 175 172 21.21      

Unscaled Zero Point Vibrational Energy (zpe) 9231.4 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 9099.4 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 PBEPBE/6-31G*
ABC
0.36423 0.15121 0.10685

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.759 -0.748 0.000
C2 0.000 0.590 0.000
O3 -0.149 -1.808 0.000
O4 -0.569 1.665 0.000
O5 1.337 0.416 0.000
H6 -1.870 -0.671 0.000
H7 1.468 -0.570 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.53761.22332.42042.39671.11402.2336
C21.53762.40241.21681.34802.25551.8711
O31.22332.40243.49872.67442.06272.0361
O42.42041.21683.49872.27872.67453.0245
O52.39671.34802.67442.27873.38600.9949
H61.11402.25552.06272.67453.38603.3395
H72.23361.87112.03613.02450.99493.3395

picture of oxo acetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 122.561 C1 C2 O5 112.150
C2 C1 O3 120.534 C2 C1 H6 115.633
C2 O5 H7 104.994 O3 C1 H6 123.833
O4 C2 O5 125.289
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.153      
2 C 0.507      
3 O -0.341      
4 O -0.392      
5 O -0.519      
6 H 0.172      
7 H 0.419      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.330 -1.899 0.000 1.927
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.407 -0.101 0.000
y -0.101 -34.755 0.000
z 0.000 0.000 -26.128
Traceless
 xyz
x 5.035 -0.101 0.000
y -0.101 -8.987 0.000
z 0.000 0.000 3.953
Polar
3z2-r27.906
x2-y29.348
xy-0.101
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.962 -0.646 0.000
y -0.646 5.492 0.000
z 0.000 0.000 2.133


<r2> (average value of r2) Å2
<r2> 100.070
(<r2>)1/2 10.004