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

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-228.841982
Energy at 298.15K-228.846694
Nuclear repulsion energy120.050788
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 PBEPBE/cc-pVDZ
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' 3576 3555 32.35      
2 A' 3124 3106 2.87      
3 A' 2994 2977 1.82      
4 A' 1791 1781 261.23      
5 A' 1391 1383 14.13      
6 A' 1351 1343 76.80      
7 A' 1286 1278 5.80      
8 A' 1169 1162 193.88      
9 A' 946 940 46.70      
10 A' 848 843 3.31      
11 A' 563 560 38.33      
12 A' 404 402 3.64      
13 A" 3070 3053 2.63      
14 A" 1395 1387 9.37      
15 A" 1009 1004 7.73      
16 A" 675 671 84.13      
17 A" 530 526 15.69      
18 A" 61 60 0.89      

Unscaled Zero Point Vibrational Energy (zpe) 13091.7 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 13015.8 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 PBEPBE/cc-pVDZ
ABC
0.37085 0.31208 0.17509

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.070 -0.909 0.000
C2 0.000 0.156 0.000
O3 0.181 1.362 0.000
H4 2.065 -0.433 0.000
H5 0.959 -1.559 0.891
H6 0.959 -1.559 -0.891
O7 -1.249 -0.400 0.000
H8 -1.858 0.374 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50952.43821.10281.10811.10812.37473.1971
C21.50951.21942.14752.15682.15681.36761.8709
O32.43821.21942.60213.15063.15062.26962.2655
H41.10282.14752.60211.81221.81223.31484.0055
H51.10812.15683.15061.81221.78102.64783.5305
H61.10812.15683.15061.81221.78102.64783.5305
O72.37471.36762.26963.31482.64782.64780.9853
H83.19711.87092.26554.00553.53053.53050.9853

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 126.305 C1 C2 O7 111.158
C2 C1 H4 109.609 C2 C1 H5 110.019
C2 C1 H6 110.019 C2 O7 H8 104.155
O3 C2 O7 122.537 H4 C1 H5 110.102
H4 C1 H6 110.102 H5 C1 H6 106.956
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.035      
2 C 0.063      
3 O -0.215      
4 H 0.057      
5 H 0.068      
6 H 0.068      
7 O -0.153      
8 H 0.148      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.412 -1.471 0.000 1.527
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.033 -3.325 0.000
y -3.325 -26.369 0.000
z 0.000 0.000 -22.818
Traceless
 xyz
x 4.560 -3.325 0.000
y -3.325 -4.944 0.000
z 0.000 0.000 0.383
Polar
3z2-r20.767
x2-y26.336
xy-3.325
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.926 -0.257 0.000
y -0.257 4.828 0.000
z 0.000 0.000 2.950


<r2> (average value of r2) Å2
<r2> 71.578
(<r2>)1/2 8.460