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

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-609.335548
Energy at 298.15K-609.338767
HF Energy-608.885637
Nuclear repulsion energy145.516711
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 MP2/3-21G*
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' 3202 3046 3.07      
2 A' 3108 2956 0.85      
3 A' 1762 1676 172.53      
4 A' 1561 1485 18.96      
5 A' 1478 1406 29.80      
6 A' 1145 1089 93.62      
7 A' 923 878 110.91      
8 A' 542 516 137.81      
9 A' 380 361 75.01      
10 A' 347 330 2.54      
11 A" 3190 3035 0.00      
12 A" 1569 1493 14.97      
13 A" 1123 1068 5.20      
14 A" 527 502 1.74      
15 A" 174 166 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 10515.3 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 10003.2 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 MP2/3-21G*
ABC
0.32081 0.15742 0.10774

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.573 0.000
C2 1.507 0.703 0.000
O3 -0.865 1.425 0.000
Cl4 -0.454 -1.249 0.000
H5 1.773 1.762 0.000
H6 1.911 0.207 0.887
H7 1.911 0.207 -0.887

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 H5 H6 H7
C11.51281.21441.87752.13502.13862.1386
C21.51282.48012.76671.09251.09341.0934
O31.21442.48012.70522.65983.15913.1591
Cl41.87752.76672.70523.74522.91562.9156
H52.13501.09252.65983.74521.79571.7957
H62.13861.09343.15912.91561.79571.7737
H72.13861.09343.15912.91561.79571.7737

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 108.995 C1 C2 H6 109.231
C1 C2 H7 109.231 C2 C1 O3 130.529
C2 C1 Cl4 108.911 O3 C1 Cl4 120.560
H5 C2 H6 110.472 H5 C2 H7 110.472
H6 C2 H7 108.415
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability