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

using model chemistry: HF/daug-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 HF/daug-cc-pVTZ
 hartrees
Energy at 0K-227.908633
Energy at 298.15K-227.913663
HF Energy-227.908633
Nuclear repulsion energy122.774982
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/daug-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' 4096 3706 112.23      
2 A' 3297 2982 9.84      
3 A' 3188 2884 3.44      
4 A' 1992 1802 459.87      
5 A' 1586 1435 14.56      
6 A' 1546 1399 71.61      
7 A' 1456 1317 50.61      
8 A' 1332 1205 234.73      
9 A' 1100 995 61.52      
10 A' 928 839 1.81      
11 A' 639 578 50.71      
12 A' 454 410 4.62      
13 A" 3247 2937 9.27      
14 A" 1597 1444 7.19      
15 A" 1174 1062 10.83      
16 A" 708 640 99.49      
17 A" 582 527 44.71      
18 A" 101 91 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 14511.5 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 13127.1 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 HF/daug-cc-pVTZ
ABC
0.39290 0.32014 0.18228

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.022 -0.943 0.000
C2 0.000 0.155 0.000
O3 0.235 1.314 0.000
H4 2.011 -0.518 0.000
H5 0.881 -1.566 0.874
H6 0.881 -1.566 -0.874
O7 -1.242 -0.318 0.000
H8 -1.844 0.411 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49992.39011.07741.08241.08242.34823.1695
C21.49991.18212.12082.12182.12181.32911.8617
O32.39011.18212.55153.07803.07802.20082.2663
H41.07742.12082.55151.77211.77213.25943.9656
H51.08242.12183.07801.77211.74812.61303.4783
H61.08242.12183.07801.77211.74812.61303.4783
O72.34821.32912.20083.25942.61302.61300.9456
H83.16951.86172.26633.96563.47833.47830.9456

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 125.624 C1 C2 O7 112.063
C2 C1 H4 109.659 C2 C1 H5 109.445
C2 C1 H6 109.445 C2 O7 H8 108.684
O3 C2 O7 122.313 H4 C1 H5 110.274
H4 C1 H6 110.274 H5 C1 H6 107.712
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.873      
2 C 1.075      
3 O -1.155      
4 H 0.661      
5 H 0.478      
6 H 0.478      
7 O -0.965      
8 H 0.301      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.411 -1.914 0.000 1.958
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.322 -4.159 0.000
y -4.159 -27.379 0.000
z 0.000 0.000 -23.026
Traceless
 xyz
x 4.880 -4.159 0.000
y -4.159 -5.705 0.000
z 0.000 0.000 0.824
Polar
3z2-r21.649
x2-y27.057
xy-4.159
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.818 -0.098 0.000
y -0.098 5.104 0.000
z 0.000 0.000 3.642


<r2> (average value of r2) Å2
<r2> 69.732
(<r2>)1/2 8.351