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: CCSD/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 CCSD/6-31G*
 hartrees
Energy at 0K-612.424272
Energy at 298.15K-612.427589
HF Energy-611.829255
Nuclear repulsion energy148.679921
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 CCSD/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' 3203 3025 3.89      
2 A' 3096 2924 0.69      
3 A' 1908 1801 256.88      
4 A' 1518 1433 13.20      
5 A' 1449 1368 23.83      
6 A' 1166 1101 162.31      
7 A' 1004 948 50.54      
8 A' 639 604 120.44      
9 A' 467 441 9.22      
10 A' 353 334 0.98      
11 A" 3177 3000 1.33      
12 A" 1517 1433 11.98      
13 A" 1084 1024 3.23      
14 A" 527 498 3.25      
15 A" 143 135 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 10625.9 cm-1
Scaled (by 0.9443) Zero Point Vibrational Energy (zpe) 10034.1 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 CCSD/6-31G*
ABC
0.33746 0.16404 0.11272

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.532 0.000
C2 1.491 0.721 0.000
O3 -0.845 1.371 0.000
Cl4 -0.455 -1.221 0.000
H5 1.710 1.791 0.000
H6 1.921 0.241 0.885
H7 1.921 0.241 -0.885

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 H5 H6 H7
C11.50241.19101.81152.12332.13492.1349
C21.50242.42452.74891.09281.09481.0948
O31.19102.42452.62202.58893.11623.1162
Cl41.81152.74892.62203.70962.92712.9271
H52.12331.09282.58893.70961.79731.7973
H62.13491.09483.11622.92711.79731.7707
H72.13491.09483.11622.92711.79731.7707

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 108.771 C1 C2 H6 109.574
C1 C2 H7 109.574 C2 C1 O3 127.986
C2 C1 Cl4 111.753 O3 C1 Cl4 120.261
H5 C2 H6 110.486 H5 C2 H7 110.486
H6 C2 H7 107.936
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability