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

using model chemistry: HF/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/aug-cc-pVDZ
 hartrees
Energy at 0K-227.851107
Energy at 298.15K-227.856148
Nuclear repulsion energy122.346015
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 HF/aug-cc-pVDZ
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' 4111 3744 111.27      
2 A' 3316 3019 10.21      
3 A' 3197 2911 3.55      
4 A' 1986 1809 453.81      
5 A' 1565 1425 14.87      
6 A' 1534 1397 84.55      
7 A' 1449 1319 24.78      
8 A' 1338 1219 248.52      
9 A' 1091 993 54.29      
10 A' 932 848 1.11      
11 A' 635 579 52.54      
12 A' 451 410 4.78      
13 A" 3267 2975 9.60      
14 A" 1574 1433 7.07      
15 A" 1161 1057 10.78      
16 A" 705 642 104.40      
17 A" 587 534 40.83      
18 A" 102 93 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 14498.8 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 13202.7 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 HF/aug-cc-pVDZ
ABC
0.38981 0.31858 0.18119

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.032 -0.936 0.000
C2 0.000 0.154 0.000
O3 0.224 1.321 0.000
H4 2.023 -0.496 0.000
H5 0.895 -1.563 0.880
H6 0.895 -1.563 -0.880
O7 -1.243 -0.331 0.000
H8 -1.848 0.398 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50092.39741.08431.08921.08922.35403.1743
C21.50091.18822.12492.12692.12691.33441.8644
O32.39741.18822.55743.08923.08922.20932.2681
H41.08432.12492.55741.78461.78463.27033.9734
H51.08922.12693.08921.78461.76012.61983.4853
H61.08922.12693.08921.78461.76012.61983.4853
O72.35401.33442.20933.27032.61982.61980.9479
H83.17431.86442.26813.97343.48533.48530.9479

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 125.722 C1 C2 O7 112.112
C2 C1 H4 109.506 C2 C1 H5 109.369
C2 C1 H6 109.369 C2 O7 H8 108.363
O3 C2 O7 122.166 H4 C1 H5 110.385
H4 C1 H6 110.385 H5 C1 H6 107.797
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.298      
2 C 0.762      
3 O -0.681      
4 H -0.014      
5 H 0.043      
6 H 0.043      
7 O -0.605      
8 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.365 -1.938 0.000 1.972
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.374 -4.147 0.000
y -4.147 -27.638 0.000
z 0.000 0.000 -23.123
Traceless
 xyz
x 5.006 -4.147 0.000
y -4.147 -5.889 0.000
z 0.000 0.000 0.883
Polar
3z2-r21.767
x2-y27.264
xy-4.147
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.808 -0.092 0.000
y -0.092 5.135 0.000
z 0.000 0.000 3.617


<r2> (average value of r2) Å2
<r2> 70.148
(<r2>)1/2 8.375