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

using model chemistry: B1B95/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-610.485319
Energy at 298.15K-610.488555
Nuclear repulsion energy147.497164
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 B1B95/3-21G*
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' 3190 3047 3.09      
2 A' 3090 2951 0.84      
3 A' 1858 1774 221.68      
4 A' 1512 1444 17.29      
5 A' 1440 1375 45.30      
6 A' 1124 1073 117.47      
7 A' 947 904 89.44      
8 A' 562 537 137.49      
9 A' 410 391 32.72      
10 A' 348 332 0.46      
11 A" 3166 3023 0.13      
12 A" 1524 1455 19.91      
13 A" 1089 1040 8.32      
14 A" 534 510 0.77      
15 A" 157 150 0.68      

Unscaled Zero Point Vibrational Energy (zpe) 10474.5 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 10002.1 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 B1B95/3-21G*
ABC
0.32882 0.16240 0.11096

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.556 0.000
C2 1.491 0.690 0.000
O3 -0.849 1.405 0.000
Cl4 -0.454 -1.226 0.000
H5 1.765 1.745 0.000
H6 1.899 0.191 0.883
H7 1.899 0.191 -0.883

Atom - Atom Distances (Å)
  C1 C2 O3 Cl4 H5 H6 H7
C11.49681.20041.83952.12762.12592.1259
C21.49682.44692.72981.09041.09291.0929
O31.20042.44692.66062.63593.13143.1314
Cl41.83952.72982.66063.70812.88512.8851
H52.12761.09042.63593.70811.79231.7923
H62.12591.09293.13142.88511.79231.7654
H72.12591.09293.13142.88511.79231.7654

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 109.648 C1 C2 H6 109.361
C1 C2 H7 109.361 C2 C1 O3 129.919
C2 C1 Cl4 109.387 O3 C1 Cl4 120.695
H5 C2 H6 110.351 H5 C2 H7 110.351
H6 C2 H7 107.735
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.324      
2 C -0.688      
3 O -0.374      
4 Cl -0.070      
5 H 0.261      
6 H 0.273      
7 H 0.273      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.926 0.581 0.000 2.983
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.282 2.249 0.000
y 2.249 -32.491 0.000
z 0.000 0.000 -29.417
Traceless
 xyz
x 1.672 2.249 0.000
y 2.249 -3.141 0.000
z 0.000 0.000 1.469
Polar
3z2-r22.938
x2-y23.209
xy2.249
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.582 0.440 0.000
y 0.440 6.451 0.000
z 0.000 0.000 2.842


<r2> (average value of r2) Å2
<r2> 102.655
(<r2>)1/2 10.132