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

using model chemistry: M06-2X/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at M06-2X/6-31G*
 hartrees
Energy at 0K-228.982380
Energy at 298.15K 
HF Energy-228.982380
Nuclear repulsion energy121.276247
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 M06-2X/6-31G*
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' 3765 3565 69.00      
2 A' 3218 3047 2.48      
3 A' 3099 2935 0.58      
4 A' 1922 1820 325.43      
5 A' 1499 1420 13.25      
6 A' 1447 1370 98.60      
7 A' 1375 1302 18.79      
8 A' 1253 1187 225.83      
9 A' 1014 960 42.09      
10 A' 893 845 2.55      
11 A' 597 565 46.79      
12 A' 422 399 4.25      
13 A" 3173 3004 2.16      
14 A" 1499 1420 9.16      
15 A" 1078 1021 10.74      
16 A" 699 662 125.79      
17 A" 551 522 16.23      
18 A" 92i 87i 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 13704.6 cm-1
Scaled (by 0.947) Zero Point Vibrational Energy (zpe) 12978.3 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 M06-2X/6-31G*
ABC
0.38024 0.31629 0.17839

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.054 -0.918 0.000
C2 0.000 0.156 0.000
O3 0.196 1.343 0.000
H4 2.040 -0.456 0.000
H5 0.933 -1.552 0.882
H6 0.933 -1.552 -0.882
O7 -1.242 -0.374 0.000
H8 -1.860 0.377 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50402.41831.08861.09311.09312.35883.1887
C21.50401.20382.12932.13612.13611.34981.8735
O32.41831.20382.57643.11503.11502.23952.2719
H41.08862.12932.57641.79001.79003.28223.9879
H51.09312.13613.11501.79001.76382.62533.5070
H61.09312.13613.11501.79001.76382.62533.5070
O72.35881.34982.23953.28222.62532.62530.9730
H83.18871.87352.27193.98793.50703.50700.9730

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 126.168 C1 C2 O7 111.374
C2 C1 H4 109.389 C2 C1 H5 109.661
C2 C1 H6 109.661 C2 O7 H8 106.388
O3 C2 O7 122.458 H4 C1 H5 110.265
H4 C1 H6 110.265 H5 C1 H6 107.577
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.557      
2 C 0.573      
3 O -0.464      
4 H 0.203      
5 H 0.203      
6 H 0.203      
7 O -0.594      
8 H 0.432      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.418 -1.519 0.000 1.576
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.818 -3.833 0.000
y -3.833 -26.698 0.000
z 0.000 0.000 -22.778
Traceless
 xyz
x 4.920 -3.833 0.000
y -3.833 -5.400 0.000
z 0.000 0.000 0.480
Polar
3z2-r20.960
x2-y26.880
xy-3.833
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.274 -0.076 0.000
y -0.076 4.525 0.000
z 0.000 0.000 2.780


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000