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

using model chemistry: wB97X-D/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/cc-pVTZ
 hartrees
Energy at 0K-229.103530
Energy at 298.15K 
HF Energy-229.103530
Nuclear repulsion energy121.651083
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 wB97X-D/cc-pVTZ
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' 3828 3660 62.56      
2 A' 3200 3059 4.35      
3 A' 3082 2947 1.63      
4 A' 1866 1784 338.00      
5 A' 1473 1408 13.62      
6 A' 1422 1359 86.29      
7 A' 1356 1296 23.68      
8 A' 1230 1176 212.06      
9 A' 1014 970 56.33      
10 A' 877 838 3.46      
11 A' 595 569 41.27      
12 A' 430 411 4.31      
13 A" 3153 3015 3.68      
14 A" 1477 1412 9.00      
15 A" 1065 1018 9.21      
16 A" 673 644 95.04      
17 A" 543 519 23.47      
18 A" 125i 120i 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 13579.4 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 12981.9 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 wB97X-D/cc-pVTZ
ABC
0.38271 0.31782 0.17938

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.990 -0.982 0.000
C2 0.000 0.142 0.000
O3 0.292 1.312 0.000
H4 1.980 -0.543 0.000
H5 0.855 -1.610 0.881
H6 0.855 -1.610 -0.881
O7 -1.272 -0.278 0.000
H8 -1.793 0.531 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49742.39801.08261.09021.09022.36853.1673
C21.49741.20652.09502.13892.13891.33901.8345
O32.39801.20652.50863.10363.10362.23002.2261
H41.08262.09502.50861.78261.78263.26223.9225
H51.09022.13893.10361.78261.76192.65953.5172
H61.09022.13893.10361.78261.76192.65953.5172
O72.36851.33902.23003.26222.65952.65950.9623
H83.16731.83452.22613.92253.51723.51720.9623

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 124.617 C1 C2 O7 113.126
C2 C1 H4 107.499 C2 C1 H5 110.516
C2 C1 H6 110.516 C2 O7 H8 104.527
O3 C2 O7 122.257 H4 C1 H5 110.256
H4 C1 H6 110.256 H5 C1 H6 107.813
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.235      
2 C 0.280      
3 O -0.311      
4 H 0.106      
5 H 0.100      
6 H 0.100      
7 O -0.249      
8 H 0.209      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.396 -1.695 0.000 1.740
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.974 -3.748 0.000
y -3.748 -26.885 0.000
z 0.000 0.000 -22.882
Traceless
 xyz
x 4.910 -3.748 0.000
y -3.748 -5.457 0.000
z 0.000 0.000 0.547
Polar
3z2-r21.094
x2-y26.911
xy-3.748
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.947 -0.142 0.000
y -0.142 5.118 0.000
z 0.000 0.000 3.412


<r2> (average value of r2) Å2
<r2> 70.349
(<r2>)1/2 8.387