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

using model chemistry: PBEPBE/6-311G**

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/6-311G**
 hartrees
Energy at 0K-228.895236
Energy at 298.15K-228.899977
Nuclear repulsion energy120.367004
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/6-311G**
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' 3638 3605 33.97      
2 A' 3111 3082 4.94      
3 A' 2994 2967 1.78      
4 A' 1784 1768 277.80      
5 A' 1423 1410 15.63      
6 A' 1356 1344 68.28      
7 A' 1299 1287 10.93      
8 A' 1168 1158 206.73      
9 A' 957 948 61.93      
10 A' 843 835 3.95      
11 A' 568 563 37.91      
12 A' 409 406 3.96      
13 A" 3060 3032 4.46      
14 A" 1425 1412 11.33      
15 A" 1024 1014 7.54      
16 A" 672 666 93.71      
17 A" 530 525 18.30      
18 A" 69 68 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 13163.5 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 13043.7 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 PBEPBE/6-311G**
ABC
0.37241 0.31340 0.17579

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.073 -0.902 0.000
C2 0.000 0.157 0.000
O3 0.175 1.359 0.000
H4 2.059 -0.425 0.000
H5 0.966 -1.546 0.885
H6 0.966 -1.546 -0.885
O7 -1.246 -0.405 0.000
H8 -1.866 0.352 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50822.43251.09491.10001.10002.37193.1960
C21.50821.21392.13942.14912.14911.36671.8765
O32.43251.21392.59373.13793.13792.26462.2765
H41.09492.13942.59371.79871.79873.30464.0012
H51.10002.14913.13791.79871.77042.64173.5224
H61.10002.14913.13791.79871.77042.64173.5224
O72.37191.36672.26463.30462.64172.64170.9783
H83.19601.87652.27654.00123.52243.52240.9783

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 126.324 C1 C2 O7 111.091
C2 C1 H4 109.526 C2 C1 H5 109.990
C2 C1 H6 109.990 C2 O7 H8 105.090
O3 C2 O7 122.586 H4 C1 H5 110.070
H4 C1 H6 110.070 H5 C1 H6 107.168
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.347      
2 C 0.244      
3 O -0.303      
4 H 0.152      
5 H 0.152      
6 H 0.152      
7 O -0.289      
8 H 0.241      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.373 -1.504 0.000 1.549
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.180 -3.506 0.000
y -3.506 -26.982 0.000
z 0.000 0.000 -23.069
Traceless
 xyz
x 4.846 -3.506 0.000
y -3.506 -5.358 0.000
z 0.000 0.000 0.512
Polar
3z2-r21.023
x2-y26.802
xy-3.506
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.045 -0.214 0.000
y -0.214 5.008 0.000
z 0.000 0.000 3.113


<r2> (average value of r2) Å2
<r2> 71.544
(<r2>)1/2 8.458