return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3COCl (Acetyl Chloride)

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-612.340314
Energy at 298.15K-612.343699
HF Energy-611.830618
Nuclear repulsion energy149.623192
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' 3289 3038 3.22      
2 A' 3178 2936 0.46      
3 A' 1989 1837 311.53      
4 A' 1554 1436 13.39      
5 A' 1491 1377 25.94      
6 A' 1196 1105 176.49      
7 A' 1032 953 53.70      
8 A' 657 607 131.37      
9 A' 484 447 8.95      
10 A' 363 335 0.91      
11 A" 3261 3012 0.88      
12 A" 1556 1437 12.44      
13 A" 1114 1029 4.12      
14 A" 547 506 4.36      
15 A" 146 135 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 10928.8 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 10094.9 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
0.34184 0.16597 0.11408

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 0.000 0.515 0.000
C2 1.485 0.719 0.000
O3 -0.834 1.356 0.000
Cl4 -0.457 -1.208 0.000
H5 1.690 1.786 0.000
H6 1.920 0.250 0.880
H7 1.920 0.250 -0.880

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 H5 H6 H7
C11.49891.18371.78322.11422.12902.1290
C21.49892.40452.73621.08581.08821.0882
O31.18372.40452.59122.56043.09563.0956
Cl41.78322.73622.59123.68412.92442.9244
H52.11421.08582.56043.68411.78481.7848
H62.12901.08823.09562.92441.78481.7597
H72.12901.08823.09562.92441.78481.7597

picture of Acetyl Chloride state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 108.712 C1 C2 H6 109.736
C1 C2 H7 109.736 C2 C1 O3 126.967
C2 C1 Cl4 112.670 O3 C1 Cl4 120.363
H5 C2 H6 110.369 H5 C2 H7 110.369
H6 C2 H7 107.909
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability