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

using model chemistry: B2PLYP=FULLultrafine/6-31G*

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/6-31G*
 hartrees
Energy at 0K-228.861037
Energy at 298.15K 
HF Energy-228.653664
Nuclear repulsion energy120.783678
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/6-31G*
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' 3704 3514 50.85 91.93 0.30 0.46
2 A' 3224 3058 5.21 51.18 0.71 0.83
3 A' 3107 2947 1.77 102.07 0.02 0.04
4 A' 1853 1758 265.78 5.23 0.35 0.52
5 A' 1522 1444 14.01 16.22 0.73 0.84
6 A' 1455 1380 55.77 1.93 0.73 0.84
7 A' 1378 1308 32.69 2.91 0.60 0.75
8 A' 1235 1172 206.86 3.67 0.61 0.76
9 A' 1024 972 62.79 1.72 0.67 0.80
10 A' 876 831 2.37 9.71 0.12 0.21
11 A' 584 554 43.86 3.32 0.75 0.85
12 A' 423 401 4.26 0.23 0.74 0.85
13 A" 3177 3014 4.57 59.98 0.75 0.86
14 A" 1526 1448 8.76 14.93 0.75 0.86
15 A" 1094 1038 8.29 0.92 0.75 0.86
16 A" 693 658 116.56 1.49 0.75 0.86
17 A" 551 523 18.92 4.46 0.75 0.86
18 A" 82 78 0.56 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13753.9 cm-1
Scaled (by 0.9487) Zero Point Vibrational Energy (zpe) 13048.3 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/6-31G*
ABC
0.37553 0.31504 0.17694

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.065 -0.907 0.000
C2 0.000 0.155 0.000
O3 0.182 1.354 0.000
H4 2.046 -0.436 0.000
H5 0.955 -1.544 0.881
H6 0.955 -1.544 -0.881
O7 -1.243 -0.394 0.000
H8 -1.864 0.358 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50442.42761.08801.09241.09242.36423.1908
C21.50441.21272.13002.13872.13871.35861.8751
O32.42761.21272.58483.12583.12582.25532.2759
H41.08802.13002.58481.78691.78693.28913.9901
H51.09242.13873.12581.78691.76192.63193.5126
H61.09242.13873.12581.78691.76192.63193.5126
O72.36421.35862.25533.28912.63192.63190.9755
H83.19081.87512.27593.99013.51263.51260.9755

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 126.284 C1 C2 O7 111.229
C2 C1 H4 109.446 C2 C1 H5 109.874
C2 C1 H6 109.874 C2 O7 H8 105.727
O3 C2 O7 122.486 H4 C1 H5 110.066
H4 C1 H6 110.066 H5 C1 H6 107.492
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.535      
2 C 0.558      
3 O -0.447      
4 H 0.193      
5 H 0.193      
6 H 0.193      
7 O -0.576      
8 H 0.421      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.380 -1.493 0.000 1.541
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.933 -3.692 -0.007
y -3.692 -26.857 0.010
z -0.007 0.010 -22.820
Traceless
 xyz
x 4.906 -3.692 -0.007
y -3.692 -5.481 0.010
z -0.007 0.010 0.575
Polar
3z2-r21.150
x2-y26.925
xy-3.692
xz-0.007
yz0.010


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.368 -0.069 0.000
y -0.069 4.550 -0.001
z 0.000 -0.001 2.748


<r2> (average value of r2) Å2
<r2> 71.036
(<r2>)1/2 8.428