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

using model chemistry: MP2/CEP-121G

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-121G
 hartrees
Energy at 0K-43.365254
Energy at 298.15K-43.368409
HF Energy-43.009172
Nuclear repulsion energy57.949595
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-121G
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' 3134 3059 7.39      
2 A' 3001 2929 4.31      
3 A' 1679 1639 241.78      
4 A' 1503 1467 23.10      
5 A' 1449 1415 23.61      
6 A' 1140 1113 108.43      
7 A' 947 924 94.33      
8 A' 549 536 144.01      
9 A' 385 376 43.36      
10 A' 320 312 1.57      
11 A" 3116 3041 3.70      
12 A" 1488 1452 15.89      
13 A" 1081 1055 1.51      
14 A" 479 468 2.46      
15 A" 157 154 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 10213.9 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 9968.8 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-121G
ABC
0.31584 0.14760 0.10255

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.580 0.000
C2 1.516 0.793 0.000
O3 -0.906 1.423 0.000
Cl4 -0.439 -1.301 0.000
H5 1.722 1.872 0.000
H6 1.951 0.315 0.890
H7 1.951 0.315 -0.890

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 H5 H6 H7
C11.53061.23791.93202.15252.16042.1604
C21.53062.50282.86481.09841.09981.0998
O31.23792.50282.76412.66653.19123.1912
Cl41.93202.86482.76413.83903.01923.0192
H52.15251.09842.66653.83901.80771.8077
H62.16041.09983.19123.01921.80771.7797
H72.16041.09983.19123.01921.80771.7797

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 108.814 C1 C2 H6 109.347
C1 C2 H7 109.347 C2 C1 O3 129.089
C2 C1 Cl4 111.129 O3 C1 Cl4 119.782
H5 C2 H6 110.645 H5 C2 H7 110.645
H6 C2 H7 108.021
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability