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

using model chemistry: B2PLYP/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 B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-229.011240
Energy at 298.15K-229.016081
HF Energy-228.749343
Nuclear repulsion energy121.233485
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 B2PLYP/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' 3762 3609 62.22      
2 A' 3192 3062 4.39      
3 A' 3078 2953 1.81      
4 A' 1821 1747 289.10      
5 A' 1486 1426 15.28      
6 A' 1421 1363 56.33      
7 A' 1350 1295 29.78      
8 A' 1211 1162 203.14      
9 A' 1007 966 70.75      
10 A' 867 832 3.40      
11 A' 585 561 39.50      
12 A' 423 406 3.93      
13 A" 3144 3017 3.88      
14 A" 1493 1432 8.37      
15 A" 1077 1033 6.69      
16 A" 672 645 92.27      
17 A" 550 528 24.11      
18 A" 78 75 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 13608.3 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 13055.8 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 B2PLYP/cc-pVTZ
ABC
0.37835 0.31700 0.17814

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.995 -0.979 0.000
C2 0.000 0.143 0.000
O3 0.291 1.320 0.000
H4 1.981 -0.536 0.000
H5 0.865 -1.608 0.879
H6 0.865 -1.608 -0.879
O7 -1.275 -0.289 0.000
H8 -1.801 0.522 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49932.40491.08121.08921.08922.37303.1732
C21.49931.21312.09412.14172.14171.34641.8405
O32.40491.21312.51073.11133.11132.24542.2390
H41.08122.09412.51071.78041.78043.26593.9272
H51.08922.14173.11131.78041.75892.66363.5236
H61.08922.14173.11131.78041.75892.66363.5236
O72.37301.34642.24543.26592.66362.66360.9659
H83.17321.84052.23903.92723.52363.52360.9659

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 124.568 C1 C2 O7 112.885
C2 C1 H4 107.374 C2 C1 H5 110.664
C2 C1 H6 110.664 C2 O7 H8 104.281
O3 C2 O7 122.547 H4 C1 H5 110.231
H4 C1 H6 110.231 H5 C1 H6 107.695
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.318      
2 C 0.275      
3 O -0.293      
4 H 0.130      
5 H 0.125      
6 H 0.125      
7 O -0.266      
8 H 0.222      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.325 -1.618 0.000 1.650
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.282 -3.582 0.000
y -3.582 -27.240 0.000
z 0.000 0.000 -23.161
Traceless
 xyz
x 4.918 -3.582 0.000
y -3.582 -5.518 0.000
z 0.000 0.000 0.600
Polar
3z2-r21.200
x2-y26.957
xy-3.582
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.041 -0.148 0.000
y -0.148 5.137 0.000
z 0.000 0.000 3.400


<r2> (average value of r2) Å2
<r2> 70.881
(<r2>)1/2 8.419