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

using model chemistry: B1B95/aug-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 B1B95/aug-cc-pVDZ
 hartrees
Energy at 0K-229.034807
Energy at 298.15K-229.039633
Nuclear repulsion energy 
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 B1B95/aug-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' 3803 3643 66.69      
2 A' 3216 3081 3.69      
3 A' 3087 2957 1.14      
4 A' 1851 1773 346.96      
5 A' 1442 1382 14.97      
6 A' 1405 1346 96.80      
7 A' 1332 1276 14.00      
8 A' 1222 1170 214.04      
9 A' 992 950 47.83      
10 A' 883 845 2.70      
11 A' 584 560 42.29      
12 A' 417 399 4.55      
13 A" 3165 3032 2.64      
14 A" 1449 1388 8.63      
15 A" 1051 1007 7.88      
16 A" 673 645 96.45      
17 A" 554 530 18.84      
18 A" 74 71 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 13599.0 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 13026.4 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 B1B95/aug-cc-pVDZ
ABC
0.38060 0.31756 0.17889

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.066 -0.897 0.000
C2 0.000 0.151 0.000
O3 0.176 1.344 0.000
H4 2.045 -0.418 0.000
H5 0.955 -1.535 0.882
H6 0.955 -1.535 -0.882
O7 -1.237 -0.392 0.000
H8 -1.860 0.347 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49492.41101.08971.09471.09472.35773.1792
C21.49491.20552.12302.12932.12931.35131.8700
O32.41101.20552.56913.11033.11032.23852.2662
H41.08972.12302.56911.79271.79273.28233.9791
H51.09472.12933.11031.79271.76502.62483.4991
H61.09472.12933.11031.79271.76502.62483.4991
O72.35771.35132.23853.28232.62482.62480.9669
H83.17921.87002.26623.97913.49913.49910.9669

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 126.131 C1 C2 O7 111.766
C2 C1 H4 109.450 C2 C1 H5 109.657
C2 C1 H6 109.657 C2 O7 H8 106.361
O3 C2 O7 122.103 H4 C1 H5 110.306
H4 C1 H6 110.306 H5 C1 H6 107.440
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.501      
2 C 0.564      
3 O -0.518      
4 H -0.122      
5 H -0.070      
6 H -0.070      
7 O -0.422      
8 H 0.136      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.251 -1.779 0.000 1.797
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.496 -0.158 0.000
y -0.158 5.675 0.000
z 0.000 0.000 3.871


<r2> (average value of r2) Å2
<r2> 70.725
(<r2>)1/2 8.410