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

using model chemistry: B3LYP/STO-3G

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/STO-3G
 hartrees
Energy at 0K-226.012280
Energy at 298.15K-226.016718
Nuclear repulsion energy116.651898
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/STO-3G
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' 3686 3289 19.28      
2 A' 3496 3120 0.25      
3 A' 3312 2955 1.06      
4 A' 1884 1681 71.32      
5 A' 1656 1478 9.32      
6 A' 1536 1370 9.04      
7 A' 1466 1309 15.20      
8 A' 1277 1139 117.70      
9 A' 1042 930 25.01      
10 A' 858 766 1.22      
11 A' 513 458 25.63      
12 A' 384 343 3.10      
13 A" 3473 3100 0.07      
14 A" 1654 1476 4.96      
15 A" 1106 987 5.64      
16 A" 646 576 70.05      
17 A" 517 461 3.42      
18 A" 59 53 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 14281.9 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 12745.1 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 B3LYP/STO-3G
ABC
0.34940 0.29363 0.16456

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.159 -0.872 0.000
C2 0.000 0.170 0.000
O3 0.087 1.418 0.000
H4 2.125 -0.347 0.000
H5 1.092 -1.513 0.893
H6 1.092 -1.513 -0.893
O7 -1.256 -0.505 0.000
H8 -1.918 0.283 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.55892.52931.09971.10161.10162.44253.2870
C21.55891.25162.18702.19652.19651.42561.9214
O32.52931.25162.69613.22553.22552.34612.3044
H41.09972.18702.69611.79621.79623.38444.0919
H51.10162.19653.22551.79621.78692.70683.6176
H61.10162.19653.22551.79621.78692.70683.6176
O72.44251.42562.34613.38442.70682.70681.0297
H83.28701.92142.30444.09193.61763.61761.0297

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 127.966 C1 C2 O7 109.769
C2 C1 H4 109.481 C2 C1 H5 110.112
C2 C1 H6 110.112 C2 O7 H8 101.772
O3 C2 O7 122.265 H4 C1 H5 109.360
H4 C1 H6 109.360 H5 C1 H6 108.395
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.240      
2 C 0.209      
3 O -0.221      
4 H 0.092      
5 H 0.093      
6 H 0.093      
7 O -0.221      
8 H 0.195      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.292 -0.773 0.000 0.826
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.793 -2.526 0.000
y -2.526 -24.320 0.000
z 0.000 0.000 -20.821
Traceless
 xyz
x 3.777 -2.526 0.000
y -2.526 -4.513 0.000
z 0.000 0.000 0.735
Polar
3z2-r21.471
x2-y25.527
xy-2.526
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.905 -0.127 0.000
y -0.127 2.795 0.000
z 0.000 0.000 1.189


<r2> (average value of r2) Å2
<r2> 73.883
(<r2>)1/2 8.596