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

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-43.656431
Energy at 298.15K-43.659706
HF Energy-43.107415
Nuclear repulsion energy59.417556
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 MP2/CEP-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' 3239 3076 7.60      
2 A' 3112 2954 3.36      
3 A' 1841 1748 272.75      
4 A' 1493 1417 13.95      
5 A' 1426 1354 20.99      
6 A' 1150 1092 165.91      
7 A' 988 938 60.27      
8 A' 619 588 139.45      
9 A' 449 426 14.12      
10 A' 346 328 0.92      
11 A" 3218 3055 4.00      
12 A" 1495 1419 13.91      
13 A" 1069 1015 3.32      
14 A" 515 489 1.71      
15 A" 152 144 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 10555.5 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 10021.4 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 MP2/CEP-31G*
ABC
0.32616 0.16138 0.11023

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.528 0.000
C2 1.514 0.713 0.000
O3 -0.852 1.393 0.000
Cl4 -0.463 -1.225 0.000
H5 1.738 1.791 0.000
H6 1.936 0.224 0.893
H7 1.936 0.224 -0.893

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 H5 H6 H7
C11.52571.21431.81312.14852.15392.1539
C21.52572.46222.76921.10071.10201.1020
O31.21432.46222.64662.62063.15273.1527
Cl41.81312.76922.64663.73402.94232.9423
H52.14851.10072.62063.73401.81411.8141
H62.15391.10203.15272.94231.81411.7858
H72.15391.10203.15272.94231.81411.7858

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 108.701 C1 C2 H6 109.042
C1 C2 H7 109.042 C2 C1 O3 127.594
C2 C1 Cl4 111.791 O3 C1 Cl4 120.615
H5 C2 H6 110.893 H5 C2 H7 110.893
H6 C2 H7 108.234
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability