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

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-613.421928
Energy at 298.15K-613.425193
Nuclear repulsion energy148.976014
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 mPW1PW91/6-31+G**
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' 3208 3053 3.17      
2 A' 3091 2942 0.26      
3 A' 1918 1826 352.23      
4 A' 1470 1399 14.85      
5 A' 1399 1332 33.71      
6 A' 1130 1075 180.85      
7 A' 978 931 49.01      
8 A' 622 592 134.72      
9 A' 453 431 15.93      
10 A' 350 333 1.54      
11 A" 3177 3024 0.02      
12 A" 1474 1403 15.16      
13 A" 1047 996 3.83      
14 A" 525 500 1.63      
15 A" 131 125 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 10485.1 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 9979.7 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 mPW1PW91/6-31+G**
ABC
0.33958 0.16435 0.11307

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.526 0.000
C2 1.482 0.728 0.000
O3 -0.845 1.360 0.000
Cl4 -0.451 -1.218 0.000
H5 1.699 1.795 0.000
H6 1.916 0.250 0.880
H7 1.916 0.250 -0.880

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 H5 H6 H7
C11.49531.18711.80152.12032.12682.1268
C21.49532.41082.74221.08931.09201.0920
O31.18712.41082.60822.58023.10343.1034
Cl41.80152.74222.60823.70122.92082.9208
H52.12031.08932.58023.70121.79201.7920
H62.12681.09203.10342.92081.79201.7610
H72.12681.09203.10342.92081.79201.7610

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 109.230 C1 C2 H6 109.587
C1 C2 H7 109.587 C2 C1 O3 127.617
C2 C1 Cl4 112.233 O3 C1 Cl4 120.149
H5 C2 H6 110.472 H5 C2 H7 110.472
H6 C2 H7 107.470
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.227      
2 C -0.618      
3 O -0.272      
4 Cl 0.022      
5 H 0.210      
6 H 0.216      
7 H 0.216      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.995 0.152 0.000 2.999
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.563 2.762 0.000
y 2.762 -32.778 0.000
z 0.000 0.000 -29.530
Traceless
 xyz
x 1.591 2.762 0.000
y 2.762 -3.232 0.000
z 0.000 0.000 1.640
Polar
3z2-r23.281
x2-y23.216
xy2.762
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 101.447
(<r2>)1/2 10.072