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

using model chemistry: CID/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 CID/6-31G*
 hartrees
Energy at 0K-228.354866
Energy at 298.15K-228.359823
HF Energy-227.809754
Nuclear repulsion energy121.651574
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 CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3870 3575 77.68      
2 A' 3300 3049 4.75      
3 A' 3182 2939 1.37      
4 A' 1969 1819 335.01      
5 A' 1563 1444 13.26      
6 A' 1516 1401 86.81      
7 A' 1436 1326 33.53      
8 A' 1302 1203 227.63      
9 A' 1070 989 51.13      
10 A' 920 849 1.72      
11 A' 613 566 52.20      
12 A' 439 405 4.51      
13 A" 3257 3009 4.06      
14 A" 1565 1445 8.98      
15 A" 1136 1050 10.76      
16 A" 706 652 129.42      
17 A" 571 527 27.10      
18 A" 98 90 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 14256.4 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 13168.7 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 CID/6-31G*
ABC
0.38235 0.31830 0.17945

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.050 -0.915 0.000
C2 0.000 0.154 0.000
O3 0.197 1.339 0.000
H4 2.032 -0.455 0.000
H5 0.930 -1.546 0.879
H6 0.930 -1.546 -0.879
O7 -1.239 -0.371 0.000
H8 -1.856 0.373 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49872.41001.08421.08831.08832.35293.1792
C21.49871.20102.12142.12782.12781.34601.8693
O32.41001.20102.56633.10343.10342.23342.2694
H41.08422.12142.56631.78201.78203.27233.9757
H51.08832.12783.10341.78201.75742.61873.4956
H61.08832.12783.10341.78201.75742.61873.4956
O72.35291.34602.23343.27232.61872.61870.9670
H83.17921.86932.26943.97573.49563.49560.9670

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 126.072 C1 C2 O7 111.499
C2 C1 H4 109.391 C2 C1 H5 109.651
C2 C1 H6 109.651 C2 O7 H8 106.682
O3 C2 O7 122.429 H4 C1 H5 110.218
H4 C1 H6 110.218 H5 C1 H6 107.689
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability