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

using model chemistry: B2PLYP=FULLultrafine/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=FULLultrafine/cc-pVTZ
 hartrees
Energy at 0K-229.027930
Energy at 298.15K 
HF Energy-228.749451
Nuclear repulsion energy121.352842
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=FULLultrafine/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' 3766 3598 62.55 89.29 0.26 0.41
2 A' 3193 3050 4.30 47.80 0.70 0.82
3 A' 3083 2946 1.76 136.49 0.01 0.02
4 A' 1823 1742 289.56 6.57 0.37 0.54
5 A' 1489 1423 15.43 8.66 0.68 0.81
6 A' 1424 1361 57.15 0.41 0.25 0.40
7 A' 1352 1292 30.86 3.13 0.54 0.70
8 A' 1213 1158 202.79 2.03 0.65 0.78
9 A' 1008 963 70.02 0.88 0.46 0.63
10 A' 869 831 3.37 11.01 0.08 0.15
11 A' 587 561 39.68 2.67 0.75 0.86
12 A' 425 406 3.94 0.34 0.75 0.86
13 A" 3145 3005 3.77 55.73 0.75 0.86
14 A" 1496 1429 8.45 6.16 0.75 0.86
15 A" 1078 1030 6.81 0.12 0.75 0.86
16 A" 675 645 91.72 0.80 0.75 0.86
17 A" 553 528 24.80 2.77 0.75 0.86
18 A" 82 78 0.30 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13630.4 cm-1
Scaled (by 0.9554) Zero Point Vibrational Energy (zpe) 13022.5 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=FULLultrafine/cc-pVTZ
ABC
0.37914 0.31765 0.17851

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.064 -0.900 0.000
C2 0.000 0.155 0.000
O3 0.180 1.346 0.000
H4 2.040 -0.431 0.000
H5 0.953 -1.534 0.877
H6 0.953 -1.534 -0.877
O7 -1.239 -0.393 0.000
H8 -1.862 0.347 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49842.41371.08241.08721.08722.35823.1806
C21.49841.20472.12212.12772.12771.35441.8715
O32.41371.20472.57203.10763.10762.24412.2727
H41.08242.12212.57201.77911.77913.27873.9781
H51.08722.12773.10761.77911.75302.62183.4968
H61.08722.12773.10761.77911.75302.62183.4968
O72.35821.35442.24413.27872.62182.62180.9672
H83.18061.87152.27273.97813.49683.49680.9672

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 126.146 C1 C2 O7 111.412
C2 C1 H4 109.570 C2 C1 H5 109.726
C2 C1 H6 109.726 C2 O7 H8 106.238
O3 C2 O7 122.442 H4 C1 H5 110.169
H4 C1 H6 110.169 H5 C1 H6 107.452
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.318      
2 C 0.274      
3 O -0.293      
4 H 0.130      
5 H 0.125      
6 H 0.125      
7 O -0.265      
8 H 0.221      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.326 -1.620 0.000 1.652
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.268 -3.573 -0.008
y -3.573 -27.239 0.010
z -0.008 0.010 -23.149
Traceless
 xyz
x 4.925 -3.573 -0.008
y -3.573 -5.531 0.010
z -0.008 0.010 0.605
Polar
3z2-r21.211
x2-y26.971
xy-3.573
xz-0.008
yz0.010


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.029 -0.147 0.000
y -0.147 5.126 -0.001
z 0.000 -0.001 3.394


<r2> (average value of r2) Å2
<r2> 70.760
(<r2>)1/2 8.412