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=FULL/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=FULL/6-31G*
 hartrees
Energy at 0K-612.445259
Energy at 298.15K-612.448582
HF Energy-611.829398
Nuclear repulsion energy148.817239
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=FULL/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' 3204 3044 3.86      
2 A' 3097 2941 0.65      
3 A' 1912 1816 257.37      
4 A' 1518 1442 13.17      
5 A' 1450 1377 24.58      
6 A' 1167 1109 162.72      
7 A' 1006 955 49.96      
8 A' 640 608 120.26      
9 A' 468 445 9.24      
10 A' 355 337 0.96      
11 A" 3177 3018 1.29      
12 A" 1518 1442 12.09      
13 A" 1085 1031 3.32      
14 A" 530 503 3.22      
15 A" 143 136 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 10635.3 cm-1
Scaled (by 0.9498) Zero Point Vibrational Energy (zpe) 10101.4 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=FULL/6-31G*
ABC
0.33802 0.16439 0.11294

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.532 0.000
C2 1.489 0.720 0.000
O3 -0.845 1.370 0.000
Cl4 -0.454 -1.220 0.000
H5 1.709 1.790 0.000
H6 1.919 0.241 0.885
H7 1.919 0.241 -0.885

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 H5 H6 H7
C11.50071.19011.80982.12182.13322.1332
C21.50072.42242.74581.09251.09451.0945
O31.19012.42242.61962.58743.11393.1139
Cl41.80982.74582.61963.70652.92392.9239
H52.12181.09252.58743.70651.79671.7967
H62.13321.09453.11392.92391.79671.7700
H72.13321.09453.11392.92391.79671.7700

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 108.797 C1 C2 H6 109.574
C1 C2 H7 109.574 C2 C1 O3 128.009
C2 C1 Cl4 111.736 O3 C1 Cl4 120.255
H5 C2 H6 110.481 H5 C2 H7 110.481
H6 C2 H7 107.920
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability