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All results from a given calculation for CH3COOH (Acetic acid)

using model chemistry: HF/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/TZVP
 hartrees
Energy at 0K-227.897712
Energy at 298.15K-227.902736
HF Energy-227.897712
Nuclear repulsion energy122.708342
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 HF/TZVP
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' 4100 3726 110.26      
2 A' 3307 3004 9.65      
3 A' 3197 2905 3.41      
4 A' 2004 1821 468.11      
5 A' 1590 1445 14.05      
6 A' 1548 1407 72.80      
7 A' 1459 1325 53.35      
8 A' 1336 1214 248.38      
9 A' 1101 1000 64.35      
10 A' 927 842 2.06      
11 A' 643 584 52.12      
12 A' 457 415 4.54      
13 A" 3260 2962 9.85      
14 A" 1597 1451 8.63      
15 A" 1174 1066 11.89      
16 A" 704 640 121.32      
17 A" 583 529 46.67      
18 A" 90 82 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 14537.9 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 13209.2 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 HF/TZVP
ABC
0.39270 0.31967 0.18210

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.028 -0.937 0.000
C2 0.000 0.156 0.000
O3 0.226 1.316 0.000
H4 2.015 -0.504 0.000
H5 0.893 -1.561 0.875
H6 0.893 -1.561 -0.875
O7 -1.241 -0.326 0.000
H8 -1.850 0.399 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50052.39161.07841.08301.08302.34943.1729
C21.50051.18182.12042.12352.12351.33081.8656
O32.39161.18182.55213.07983.07982.20112.2686
H41.07842.12042.55211.77301.77303.26073.9690
H51.08302.12353.07981.77301.75042.61573.4827
H61.08302.12353.07981.77301.75042.61573.4827
O72.34941.33082.20113.26072.61572.61570.9472
H83.17291.86562.26863.96903.48273.48270.9472

picture of Acetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 125.749 C1 C2 O7 112.023
C2 C1 H4 109.530 C2 C1 H5 109.505
C2 C1 H6 109.505 C2 O7 H8 108.800
O3 C2 O7 122.228 H4 C1 H5 110.225
H4 C1 H6 110.225 H5 C1 H6 107.825
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.276      
2 C 0.404      
3 O -0.425      
4 H 0.123      
5 H 0.113      
6 H 0.113      
7 O -0.361      
8 H 0.311      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.398 -1.860 0.000 1.902
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.330 -4.355 0.000
y -4.355 -27.671 0.000
z 0.000 0.000 -22.978
Traceless
 xyz
x 4.995 -4.355 0.000
y -4.355 -6.017 0.000
z 0.000 0.000 1.022
Polar
3z2-r22.044
x2-y27.341
xy-4.355
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.212 0.019 0.000
y 0.019 4.708 0.000
z 0.000 0.000 3.144


<r2> (average value of r2) Å2
<r2> 69.847
(<r2>)1/2 8.357