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

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-610.360150
Energy at 298.15K-610.363382
Nuclear repulsion energy144.942929
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 mPW1PW91/3-21G
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' 3195 3050 2.56      
2 A' 3097 2956 2.23      
3 A' 1921 1834 262.12      
4 A' 1517 1449 15.93      
5 A' 1451 1385 51.55      
6 A' 1128 1077 126.00      
7 A' 953 910 85.70      
8 A' 553 528 144.04      
9 A' 392 375 30.79      
10 A' 336 321 1.36      
11 A" 3176 3032 1.55      
12 A" 1528 1458 20.29      
13 A" 1097 1048 11.26      
14 A" 523 499 1.09      
15 A" 175 167 0.85      

Unscaled Zero Point Vibrational Energy (zpe) 10521.2 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 10043.5 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 mPW1PW91/3-21G
ABC
0.32510 0.15323 0.10621

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.617 0.000
C2 1.484 0.724 0.000
O3 -0.873 1.428 0.000
Cl4 -0.439 -1.275 0.000
H5 1.781 1.775 0.000
H6 1.881 0.215 0.883
H7 1.881 0.215 -0.883

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 H5 H6 H7
C11.48831.19171.94262.12442.11612.1161
C21.48832.46062.77431.09181.09341.0934
O31.19172.46062.73802.67723.13623.1362
Cl41.94262.77432.73803.77262.89482.8948
H52.12441.09182.67723.77261.79511.7951
H62.11611.09343.13622.89481.79511.7653
H72.11611.09343.13622.89481.79511.7653

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 109.900 C1 C2 H6 109.143
C1 C2 H7 109.143 C2 C1 O3 132.997
C2 C1 Cl4 107.180 O3 C1 Cl4 119.823
H5 C2 H6 110.474 H5 C2 H7 110.474
H6 C2 H7 107.658
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.314      
2 C -0.708      
3 O -0.361      
4 Cl -0.104      
5 H 0.273      
6 H 0.293      
7 H 0.293      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.264 1.485 0.000 3.586
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.251 1.982 0.000
y 1.982 -33.333 0.000
z 0.000 0.000 -29.632
Traceless
 xyz
x 2.232 1.982 0.000
y 1.982 -3.891 0.000
z 0.000 0.000 1.659
Polar
3z2-r23.318
x2-y24.082
xy1.982
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> 106.238
(<r2>)1/2 10.307