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

using model chemistry: PBEPBE/6-311G*

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/6-311G*
 hartrees
Energy at 0K-228.884717
Energy at 298.15K-228.889450
Nuclear repulsion energy120.344659
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/6-311G*
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' 3596 3558 17.53      
2 A' 3111 3078 7.14      
3 A' 2995 2964 2.61      
4 A' 1786 1768 281.56      
5 A' 1442 1427 18.14      
6 A' 1369 1355 60.16      
7 A' 1311 1297 6.69      
8 A' 1180 1168 221.50      
9 A' 964 954 64.18      
10 A' 844 835 3.88      
11 A' 570 564 38.59      
12 A' 409 405 4.37      
13 A" 3059 3027 6.31      
14 A" 1443 1428 12.14      
15 A" 1034 1023 7.92      
16 A" 692 684 111.17      
17 A" 535 530 17.42      
18 A" 58 57 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 13198.7 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 13061.4 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 PBEPBE/6-311G*
ABC
0.37244 0.31324 0.17574

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.076 -0.898 0.000
C2 0.000 0.158 0.000
O3 0.169 1.360 0.000
H4 2.061 -0.419 0.000
H5 0.975 -1.544 0.884
H6 0.975 -1.544 -0.884
O7 -1.243 -0.409 0.000
H8 -1.875 0.339 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50742.43311.09501.10011.10012.37043.1999
C21.50741.21412.14002.15192.15191.36671.8838
O32.43311.21412.59663.14123.14122.26432.2850
H41.09502.14002.59661.79651.79653.30434.0082
H51.10012.15193.14121.79651.76882.64443.5290
H61.10012.15193.14121.79651.76882.64443.5290
O72.37041.36672.26433.30432.64442.64440.9795
H83.19991.88382.28504.00823.52903.52900.9795

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 126.434 C1 C2 O7 111.028
C2 C1 H4 109.613 C2 C1 H5 110.248
C2 C1 H6 110.248 C2 O7 H8 105.629
O3 C2 O7 122.538 H4 C1 H5 109.845
H4 C1 H6 109.845 H5 C1 H6 107.007
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.705      
2 C 0.339      
3 O -0.300      
4 H 0.248      
5 H 0.248      
6 H 0.248      
7 O -0.459      
8 H 0.381      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.405 -1.430 0.000 1.487
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.072 -3.585 0.000
y -3.585 -27.134 0.000
z 0.000 0.000 -23.145
Traceless
 xyz
x 5.067 -3.585 0.000
y -3.585 -5.525 0.000
z 0.000 0.000 0.458
Polar
3z2-r20.917
x2-y27.061
xy-3.585
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.990 -0.201 0.000
y -0.201 4.955 0.000
z 0.000 0.000 3.039


<r2> (average value of r2) Å2
<r2> 71.607
(<r2>)1/2 8.462