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

using model chemistry: B3LYP/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 B3LYP/cc-pVTZ
 hartrees
Energy at 0K-229.181173
Energy at 298.15K-229.186005
Nuclear repulsion energy121.205668
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/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' 3743 3618 55.46      
2 A' 3161 3055 5.12      
3 A' 3053 2951 1.84      
4 A' 1825 1764 313.72      
5 A' 1473 1424 15.50      
6 A' 1409 1362 52.67      
7 A' 1342 1297 27.47      
8 A' 1205 1165 210.86      
9 A' 999 966 72.40      
10 A' 860 831 3.44      
11 A' 585 566 38.47      
12 A' 423 409 4.25      
13 A" 3109 3005 4.50      
14 A" 1479 1429 8.43      
15 A" 1070 1035 7.58      
16 A" 671 649 91.02      
17 A" 548 529 24.83      
18 A" 77 75 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 13516.3 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 13064.8 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/cc-pVTZ
ABC
0.37906 0.31610 0.17802

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.064 -0.905 0.000
C2 0.000 0.156 0.000
O3 0.185 1.345 0.000
H4 2.044 -0.438 0.000
H5 0.953 -1.542 0.878
H6 0.953 -1.542 -0.878
O7 -1.243 -0.386 0.000
H8 -1.869 0.352 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50252.41541.08501.09011.09012.36443.1913
C21.50251.20302.12812.13532.13531.35591.8793
O32.41541.20302.57563.11293.11292.24372.2808
H41.08502.12812.57561.78271.78273.28673.9916
H51.09012.13533.11291.78271.75582.63153.5099
H61.09012.13533.11291.78271.75582.63153.5099
O72.36441.35592.24373.28672.63152.63150.9686
H83.19131.87932.28083.99163.50993.50990.9686

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 126.080 C1 C2 O7 111.514
C2 C1 H4 109.608 C2 C1 H5 109.869
C2 C1 H6 109.869 C2 O7 H8 106.706
O3 C2 O7 122.406 H4 C1 H5 110.091
H4 C1 H6 110.091 H5 C1 H6 107.284
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.287     -0.385
2 C 0.289     0.724
3 O -0.302     -0.540
4 H 0.120     0.114
5 H 0.115     0.129
6 H 0.115     0.129
7 O -0.265     -0.569
8 H 0.214     0.397


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.343 -1.664 0.000 1.699
CHELPG        
AIM        
ESP -0.315 -1.702 0.000 1.731


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.198 -3.622 0.000
y -3.622 -27.231 0.000
z 0.000 0.000 -23.114
Traceless
 xyz
x 4.975 -3.622 0.000
y -3.622 -5.575 0.000
z 0.000 0.000 0.600
Polar
3z2-r21.200
x2-y27.033
xy-3.622
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.107 -0.184 0.000
y -0.184 5.162 0.000
z 0.000 0.000 3.428


<r2> (average value of r2) Å2
<r2> 70.922
(<r2>)1/2 8.422