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

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-301.299897
Energy at 298.15K-301.303174
HF Energy-301.299897
Nuclear repulsion energy162.245448
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 mPW1PW91/3-21G*
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' 3401 3230 73.62      
2 A' 3101 2945 35.26      
3 A' 1854 1761 115.19      
4 A' 1734 1647 44.90      
5 A' 1371 1301 73.41      
6 A' 1348 1280 309.46      
7 A' 1197 1137 0.47      
8 A' 864 820 48.64      
9 A' 689 655 11.42      
10 A' 498 473 3.26      
11 A' 288 274 42.57      
12 A" 1064 1011 7.55      
13 A" 743 706 133.95      
14 A" 609 578 24.27      
15 A" 236 224 19.74      

Unscaled Zero Point Vibrational Energy (zpe) 9499.4 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 9020.6 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 mPW1PW91/3-21G*
ABC
0.36683 0.15278 0.10786

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.778 -0.719 0.000
C2 0.000 0.589 0.000
O3 -0.175 -1.791 0.000
O4 -0.527 1.686 0.000
O5 1.336 0.357 0.000
H6 -1.866 -0.604 0.000
H7 1.464 -0.636 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7
C11.52191.23002.41742.37191.09382.2433
C21.52192.38621.21651.35572.21501.9090
O31.23002.38623.49412.62592.06562.0042
O42.41741.21653.49412.28792.65273.0586
O52.37191.35572.62592.28793.34291.0019
H61.09382.21502.06562.65273.34293.3297
H72.24331.90902.00423.05861.00193.3297

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 123.578 C1 C2 O5 110.897
C2 C1 O3 119.881 C2 C1 H6 114.749
C2 O5 H7 107.188 O3 C1 H6 125.370
O4 C2 O5 125.525
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.174      
2 C 0.625      
3 O -0.418      
4 O -0.459      
5 O -0.574      
6 H 0.255      
7 H 0.395      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.736 -2.167 0.000 2.289
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.829 -0.589 0.000
y -0.589 -35.706 0.000
z 0.000 0.000 -26.154
Traceless
 xyz
x 5.101 -0.589 0.000
y -0.589 -9.714 0.000
z 0.000 0.000 4.613
Polar
3z2-r29.226
x2-y29.876
xy-0.589
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.125 -0.822 0.000
y -0.822 4.776 0.000
z 0.000 0.000 1.481


<r2> (average value of r2) Å2
<r2> 99.608
(<r2>)1/2 9.980