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

using model chemistry: B3LYPultrafine/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYPultrafine/6-31+G**
 hartrees
Energy at 0K-229.105827
Energy at 298.15K-229.110621
Nuclear repulsion energy120.689492
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 B3LYPultrafine/6-31+G**
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' 3754 3614 60.46      
2 A' 3181 3062 4.22      
3 A' 3064 2950 2.06      
4 A' 1822 1754 358.55      
5 A' 1476 1421 16.52      
6 A' 1414 1361 57.41      
7 A' 1336 1286 51.05      
8 A' 1206 1161 211.16      
9 A' 1002 965 68.54      
10 A' 863 830 3.44      
11 A' 580 559 40.18      
12 A' 422 407 4.80      
13 A" 3129 3012 3.67      
14 A" 1483 1427 11.13      
15 A" 1067 1028 7.50      
16 A" 668 643 107.04      
17 A" 545 525 27.46      
18 A" 69 67 0.34      

Unscaled Zero Point Vibrational Energy (zpe) 13540.2 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 13035.1 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 B3LYPultrafine/6-31+G**
ABC
0.37602 0.31354 0.17659

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.070 -0.906 0.000
C2 0.000 0.153 0.000
O3 0.181 1.352 0.000
H4 2.051 -0.432 0.000
H5 0.962 -1.545 0.882
H6 0.962 -1.545 -0.882
O7 -1.246 -0.391 0.000
H8 -1.879 0.347 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50562.42661.08931.09431.09432.37293.2045
C21.50561.21272.13312.14112.14111.35961.8889
O32.42661.21272.58463.12693.12692.25282.2921
H41.08932.13312.58461.78961.78963.29754.0067
H51.09432.14113.12691.78961.76362.64243.5250
H61.09432.14113.12691.78961.76362.64243.5250
O72.37291.35962.25283.29752.64242.64240.9724
H83.20451.88892.29214.00673.52503.52500.9724

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 126.095 C1 C2 O7 111.727
C2 C1 H4 109.529 C2 C1 H5 109.870
C2 C1 H6 109.870 C2 O7 H8 107.025
O3 C2 O7 122.179 H4 C1 H5 110.084
H4 C1 H6 110.084 H5 C1 H6 107.377
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.448      
2 C 0.433      
3 O -0.462      
4 H 0.183      
5 H 0.183      
6 H 0.183      
7 O -0.436      
8 H 0.363      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.277 -1.768 0.000 1.790
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.355 -3.968 -0.001
y -3.968 -27.952 -0.004
z -0.001 -0.004 -23.463
Traceless
 xyz
x 5.352 -3.968 -0.001
y -3.968 -6.043 -0.004
z -0.001 -0.004 0.691
Polar
3z2-r21.382
x2-y27.597
xy-3.968
xz-0.001
yz-0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.114 -0.037 0.001
y -0.037 5.478 0.000
z 0.001 0.000 3.505


<r2> (average value of r2) Å2
<r2> 71.631
(<r2>)1/2 8.464