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

using model chemistry: BLYP/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 BLYP/cc-pVTZ
 hartrees
Energy at 0K-229.121837
Energy at 298.15K-229.126566
Nuclear repulsion energy119.987724
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/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' 3589 3578 33.77      
2 A' 3084 3075 6.23      
3 A' 2981 2972 2.68      
4 A' 1744 1738 274.37      
5 A' 1440 1435 15.87      
6 A' 1363 1359 31.20      
7 A' 1294 1290 18.76      
8 A' 1152 1149 189.26      
9 A' 958 956 93.85      
10 A' 818 815 4.97      
11 A' 561 560 32.03      
12 A' 411 409 4.16      
13 A" 3031 3022 5.61      
14 A" 1444 1439 7.92      
15 A" 1036 1033 5.49      
16 A" 655 653 85.58      
17 A" 531 530 19.51      
18 A" 68 68 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 13079.6 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 13040.4 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 BLYP/cc-pVTZ
ABC
0.36983 0.31102 0.17443

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.089 -0.893 0.000
C2 0.000 0.159 0.000
O3 0.163 1.363 0.000
H4 2.066 -0.407 0.000
H5 0.990 -1.536 0.883
H6 0.990 -1.536 -0.883
O7 -1.249 -0.419 0.000
H8 -1.889 0.323 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.51392.43851.09131.09651.09652.38543.2162
C21.51391.21492.14232.15192.15191.37601.8958
O32.43851.21492.59943.14103.14102.27302.2999
H41.09132.14232.59941.79211.79213.31514.0217
H51.09652.15193.14101.79211.76532.65303.5382
H61.09652.15193.14101.79211.76532.65303.5382
O72.38541.37602.27303.31512.65302.65300.9794
H83.21621.89582.29994.02173.53823.53820.9794

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 126.314 C1 C2 O7 111.176
C2 C1 H4 109.574 C2 C1 H5 110.016
C2 C1 H6 110.016 C2 O7 H8 105.967
O3 C2 O7 122.510 H4 C1 H5 109.998
H4 C1 H6 109.998 H5 C1 H6 107.211
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.271      
2 C 0.267      
3 O -0.281      
4 H 0.113      
5 H 0.109      
6 H 0.109      
7 O -0.253      
8 H 0.206      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.283 -1.600 0.000 1.624
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.353 -3.414 0.000
y -3.414 -27.431 0.000
z 0.000 0.000 -23.333
Traceless
 xyz
x 5.029 -3.414 0.000
y -3.414 -5.589 0.000
z 0.000 0.000 0.559
Polar
3z2-r21.119
x2-y27.079
xy-3.414
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> 72.147
(<r2>)1/2 8.494