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

using model chemistry: B1B95/aug-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 B1B95/aug-cc-pVTZ
 hartrees
Energy at 0K-229.089509
Energy at 298.15K-229.094340
HF Energy-229.089509
Nuclear repulsion energy121.838557
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-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' 3795 3638 66.65      
2 A' 3200 3067 3.58      
3 A' 3082 2954 1.07      
4 A' 1852 1775 353.30      
5 A' 1469 1408 15.54      
6 A' 1414 1355 83.39      
7 A' 1344 1288 31.60      
8 A' 1216 1165 206.24      
9 A' 1002 960 56.41      
10 A' 879 843 3.12      
11 A' 587 563 41.15      
12 A' 419 402 4.49      
13 A" 3149 3018 2.60      
14 A" 1475 1414 8.85      
15 A" 1066 1022 8.07      
16 A" 670 643 90.12      
17 A" 548 525 24.98      
18 A" 75 72 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 13620.1 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 13054.9 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-pVTZ
ABC
0.38349 0.31942 0.18002

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.991 -0.976 0.000
C2 0.000 0.139 0.000
O3 0.290 1.309 0.000
H4 1.976 -0.532 0.000
H5 0.860 -1.604 0.879
H6 0.860 -1.604 -0.879
O7 -1.271 -0.280 0.000
H8 -1.795 0.528 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49182.39051.08041.08831.08832.36723.1665
C21.49181.20602.08672.13312.13311.33851.8369
O32.39051.20602.49633.09603.09602.22792.2267
H41.08042.08672.49631.77981.77983.25713.9173
H51.08832.13313.09601.77981.75832.65883.5171
H61.08832.13313.09601.77981.75832.65883.5171
O72.36721.33852.22793.25712.65882.65880.9631
H83.16651.83692.22673.91733.51713.51710.9631

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 124.437 C1 C2 O7 113.413
C2 C1 H4 107.356 C2 C1 H5 110.561
C2 C1 H6 110.561 C2 O7 H8 104.719
O3 C2 O7 122.149 H4 C1 H5 110.305
H4 C1 H6 110.305 H5 C1 H6 107.770
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.705      
2 C 0.419      
3 O -0.582      
4 H 0.335      
5 H 0.318      
6 H 0.318      
7 O -0.309      
8 H 0.206      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.293 -1.760 0.000 1.784
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.132 -3.703 0.000
y -3.703 -27.294 0.000
z 0.000 0.000 -23.090
Traceless
 xyz
x 5.060 -3.703 0.000
y -3.703 -5.683 0.000
z 0.000 0.000 0.623
Polar
3z2-r21.246
x2-y27.162
xy-3.703
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.501 -0.158 0.000
y -0.158 5.646 0.000
z 0.000 0.000 3.886


<r2> (average value of r2) Å2
<r2> 70.306
(<r2>)1/2 8.385