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/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-612.780584
Energy at 298.15K-612.783950
HF Energy-611.927721
Nuclear repulsion energy149.827311
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/cc-pVTZ
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' 3192 3026 4.45      
2 A' 3103 2942 0.58      
3 A' 1919 1820 286.81      
4 A' 1498 1420 11.54      
5 A' 1424 1350 21.44      
6 A' 1151 1091 161.50      
7 A' 993 942 47.81      
8 A' 634 601 121.83      
9 A' 467 443 10.22      
10 A' 352 334 0.93      
11 A" 3166 3002 0.80      
12 A" 1505 1427 11.01      
13 A" 1067 1012 2.51      
14 A" 540 512 2.60      
15 A" 157 149 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 10584.4 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 10035.1 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=FULL/cc-pVTZ
ABC
0.34253 0.16646 0.11437

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.533 0.000
C2 1.478 0.712 0.000
O3 -0.835 1.363 0.000
Cl4 -0.452 -1.211 0.000
H5 1.708 1.770 0.000
H6 1.895 0.228 0.877
H7 1.895 0.228 -0.877

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 H5 H6 H7
C11.48911.17731.80192.10912.10972.1097
C21.48912.40292.72501.08271.08441.0844
O31.17732.40292.60262.57533.08313.0831
Cl41.80192.72502.60263.68182.88952.8895
H52.10911.08272.57533.68181.78331.7833
H62.10971.08443.08312.88951.78331.7538
H72.10971.08443.08312.88951.78331.7538

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 109.163 C1 C2 H6 109.116
C1 C2 H7 109.116 C2 C1 O3 128.256
C2 C1 Cl4 111.441 O3 C1 Cl4 120.303
H5 C2 H6 110.744 H5 C2 H7 110.744
H6 C2 H7 107.920
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability