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

using model chemistry: B3LYP/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/SDD
 hartrees
Energy at 0K-229.053963
Energy at 298.15K-229.058716
Nuclear repulsion energy118.899190
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 B3LYP/SDD
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' 3650 3509 33.51      
2 A' 3204 3080 9.89      
3 A' 3072 2953 1.87      
4 A' 1727 1660 274.08      
5 A' 1497 1439 30.74      
6 A' 1438 1382 52.83      
7 A' 1336 1284 61.99      
8 A' 1170 1124 175.04      
9 A' 1000 961 103.80      
10 A' 848 815 8.98      
11 A' 554 533 43.23      
12 A' 415 399 6.28      
13 A" 3155 3033 9.41      
14 A" 1498 1440 19.07      
15 A" 1088 1046 12.02      
16 A" 654 628 162.08      
17 A" 542 521 32.50      
18 A" 73 71 0.67      

Unscaled Zero Point Vibrational Energy (zpe) 13459.7 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 12938.8 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 B3LYP/SDD
ABC
0.36076 0.30796 0.17146

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.158 -0.810 0.000
C2 0.000 0.155 0.000
O3 0.057 1.393 0.000
H4 2.099 -0.257 0.000
H5 1.104 -1.456 0.883
H6 1.104 -1.456 -0.883
O7 -1.218 -0.520 0.000
H8 -1.969 0.116 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50752.46311.09131.09591.09592.39333.2613
C21.50751.23942.13882.14382.14381.39261.9695
O32.46311.23942.62523.16173.16172.29932.3952
H41.09132.13882.62521.79111.79113.32694.0849
H51.09592.14383.16171.79111.76702.65463.5632
H61.09592.14383.16171.79111.76702.65463.5632
O72.39331.39262.29933.32692.65462.65460.9847
H83.26131.96952.39524.08493.56323.56320.9847

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 127.176 C1 C2 O7 111.165
C2 C1 H4 109.732 C2 C1 H5 109.859
C2 C1 H6 109.859 C2 O7 H8 110.721
O3 C2 O7 121.659 H4 C1 H5 109.954
H4 C1 H6 109.954 H5 C1 H6 107.453
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.662      
2 C 0.281      
3 O -0.270      
4 H 0.234      
5 H 0.238      
6 H 0.238      
7 O -0.446      
8 H 0.387      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.113 -1.754 0.000 1.757
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.790 -3.560 0.000
y -3.560 -29.058 0.000
z 0.000 0.000 -23.131
Traceless
 xyz
x 7.305 -3.560 0.000
y -3.560 -8.097 0.000
z 0.000 0.000 0.793
Polar
3z2-r21.585
x2-y210.268
xy-3.560
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.432 -0.027 0.000
y -0.027 4.731 0.000
z 0.000 0.000 2.700


<r2> (average value of r2) Å2
<r2> 73.090
(<r2>)1/2 8.549