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

using model chemistry: HSEh1PBE/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-228.870336
Energy at 298.15K-228.875151
HF Energy-228.870336
Nuclear repulsion energy121.246278
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/6-31+G**
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' 3810 3638 67.89      
2 A' 3215 3070 2.75      
3 A' 3087 2948 1.23      
4 A' 1858 1774 370.04      
5 A' 1471 1405 15.80      
6 A' 1422 1358 102.00      
7 A' 1348 1287 38.95      
8 A' 1223 1168 206.91      
9 A' 1006 960 48.83      
10 A' 885 845 2.99      
11 A' 588 561 43.06      
12 A' 424 405 4.77      
13 A" 3164 3021 2.08      
14 A" 1478 1411 12.15      
15 A" 1066 1017 8.92      
16 A" 678 647 109.15      
17 A" 550 525 25.98      
18 A" 68 65 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 13670.3 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 13052.4 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 HSEh1PBE/6-31+G**
ABC
0.37975 0.31662 0.17837

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.055 -0.912 0.000
C2 0.000 0.151 0.000
O3 0.194 1.345 0.000
H4 2.040 -0.449 0.000
H5 0.940 -1.550 0.881
H6 0.940 -1.550 -0.881
O7 -1.242 -0.376 0.000
H8 -1.863 0.368 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49822.41581.08871.09361.09362.35913.1864
C21.49821.20902.12682.13382.13381.34951.8751
O32.41581.20902.57433.11643.11642.24122.2763
H41.08872.12682.57431.78891.78893.28333.9875
H51.09362.13383.11641.78891.76172.62943.5082
H61.09362.13383.11641.78891.76172.62943.5082
O72.35911.34952.24123.28332.62942.62940.9690
H83.18641.87512.27633.98753.50823.50820.9690

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 126.011 C1 C2 O7 111.765
C2 C1 H4 109.580 C2 C1 H5 109.848
C2 C1 H6 109.848 C2 O7 H8 106.798
O3 C2 O7 122.224 H4 C1 H5 110.117
H4 C1 H6 110.117 H5 C1 H6 107.303
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.500      
2 C 0.410      
3 O -0.456      
4 H 0.202      
5 H 0.202      
6 H 0.202      
7 O -0.429      
8 H 0.370      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.335 -1.770 0.000 1.802
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.204 -4.007 0.000
y -4.007 -27.611 0.000
z 0.000 0.000 -23.307
Traceless
 xyz
x 5.255 -4.007 0.000
y -4.007 -5.855 0.000
z 0.000 0.000 0.600
Polar
3z2-r21.201
x2-y27.407
xy-4.007
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.989 -0.026 0.000
y -0.026 5.394 0.000
z 0.000 0.000 3.449


<r2> (average value of r2) Å2
<r2> 70.952
(<r2>)1/2 8.423