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

using model chemistry: BLYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/6-31G**
 hartrees
Energy at 0K-229.027562
Energy at 298.15K-229.032271
Nuclear repulsion energy119.575742
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 BLYP/6-31G**
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' 3590 3562 22.56      
2 A' 3106 3082 7.24      
3 A' 2992 2969 2.81      
4 A' 1771 1757 244.80      
5 A' 1450 1438 12.65      
6 A' 1371 1361 36.68      
7 A' 1308 1298 20.56      
8 A' 1164 1156 192.18      
9 A' 962 954 72.22      
10 A' 825 818 3.06      
11 A' 558 553 35.80      
12 A' 406 403 4.26      
13 A" 3051 3028 6.97      
14 A" 1454 1443 7.44      
15 A" 1034 1026 6.83      
16 A" 670 664 97.24      
17 A" 525 521 14.93      
18 A" 68 67 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 13151.3 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 13050.0 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 BLYP/6-31G**
ABC
0.36743 0.30895 0.17329

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.082 -0.908 0.000
C2 0.000 0.159 0.000
O3 0.175 1.369 0.000
H4 2.068 -0.429 0.000
H5 0.978 -1.553 0.886
H6 0.978 -1.553 -0.886
O7 -1.255 -0.409 0.000
H8 -1.878 0.352 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.51942.45071.09591.10111.10112.38973.2173
C21.51941.22262.14982.16102.16101.37711.8880
O32.45071.22262.61063.15673.15672.28112.2908
H41.09592.14982.61061.79921.79923.32284.0226
H51.10112.16103.15671.79921.77262.66043.5453
H61.10112.16103.15671.79921.77262.66043.5453
O72.38971.37712.28113.32282.66042.66040.9837
H83.21731.88802.29084.02263.54533.54530.9837

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 126.355 C1 C2 O7 111.089
C2 C1 H4 109.507 C2 C1 H5 110.085
C2 C1 H6 110.085 C2 O7 H8 104.986
O3 C2 O7 122.556 H4 C1 H5 109.962
H4 C1 H6 109.962 H5 C1 H6 107.211
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.336      
2 C 0.500      
3 O -0.424      
4 H 0.130      
5 H 0.132      
6 H 0.132      
7 O -0.437      
8 H 0.303      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.356 -1.489 0.000 1.531
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.847 -3.478 0.000
y -3.478 -26.590 0.000
z 0.000 0.000 -22.770
Traceless
 xyz
x 4.833 -3.478 0.000
y -3.478 -5.282 0.000
z 0.000 0.000 0.449
Polar
3z2-r20.898
x2-y26.743
xy-3.478
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 72.112
(<r2>)1/2 8.492