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

using model chemistry: HSEh1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/3-21G
 hartrees
Energy at 0K-301.082994
Energy at 298.15K-301.086294
HF Energy-301.082994
Nuclear repulsion energy162.265113
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 HSEh1PBE/3-21G
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' 3378 3254 73.15      
2 A' 3094 2980 35.54      
3 A' 1854 1786 113.33      
4 A' 1733 1670 43.73      
5 A' 1368 1318 139.80      
6 A' 1351 1302 241.77      
7 A' 1198 1154 0.78      
8 A' 865 834 48.36      
9 A' 691 665 11.12      
10 A' 499 481 3.07      
11 A' 294 283 42.27      
12 A" 1063 1024 7.33      
13 A" 750 723 133.18      
14 A" 609 587 22.63      
15 A" 237 229 19.21      

Unscaled Zero Point Vibrational Energy (zpe) 9492.5 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 9144.1 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 HSEh1PBE/3-21G
ABC
0.36710 0.15287 0.10792

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.778 -0.718 0.000
C2 0.000 0.589 0.000
O3 -0.174 -1.790 0.000
O4 -0.527 1.686 0.000
O5 1.335 0.355 0.000
H6 -1.867 -0.603 0.000
H7 1.459 -0.641 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52091.23042.41712.36981.09522.2378
C21.52092.38551.21691.35562.21501.9082
O31.23042.38553.49402.62272.06761.9964
O42.41711.21693.49402.28882.65263.0590
O52.36981.35562.62272.28883.34231.0036
H61.09522.21502.06762.65263.34233.3258
H72.23781.90821.99643.05901.00363.3258

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 123.601 C1 C2 O5 110.809
C2 C1 O3 119.857 C2 C1 H6 114.733
C2 O5 H7 107.013 O3 C1 H6 125.410
O4 C2 O5 125.591
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.173      
2 C 0.620      
3 O -0.414      
4 O -0.455      
5 O -0.569      
6 H 0.252      
7 H 0.392      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.732 -2.163 0.000 2.283
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.903 -0.589 0.000
y -0.589 -35.660 0.000
z 0.000 0.000 -26.182
Traceless
 xyz
x 5.018 -0.589 0.000
y -0.589 -9.618 0.000
z 0.000 0.000 4.600
Polar
3z2-r29.199
x2-y29.757
xy-0.589
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.144 -0.820 0.000
y -0.820 4.781 0.000
z 0.000 0.000 1.481


<r2> (average value of r2) Å2
<r2> 99.569
(<r2>)1/2 9.978