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All results from a given calculation for CH3CHCH3 (Isopropyl radical)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-117.793589
Energy at 298.15K-117.799727
HF Energy-117.793589
Nuclear repulsion energy75.192435
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 B3PW91/3-21G*
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' 3197 3067 23.39      
2 A' 3116 2989 13.69      
3 A' 3051 2927 42.21      
4 A' 2977 2856 36.86      
5 A' 1555 1492 6.55      
6 A' 1544 1481 19.41      
7 A' 1461 1401 8.03      
8 A' 1211 1162 8.16      
9 A' 1065 1021 3.51      
10 A' 880 844 1.95      
11 A' 393 377 9.22      
12 A' 343 329 25.97      
13 A' 116 111 0.79      
14 A" 3117 2990 22.98      
15 A" 3049 2925 5.37      
16 A" 2972 2851 18.42      
17 A" 1540 1478 2.69      
18 A" 1530 1468 0.90      
19 A" 1443 1385 8.42      
20 A" 1394 1337 7.13      
21 A" 1145 1099 0.93      
22 A" 983 943 1.44      
23 A" 975 936 1.03      
24 A" 118 113 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 19586.4 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 18791.2 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 B3PW91/3-21G*
ABC
1.22624 0.27798 0.24781

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.010 0.546 0.000
C2 -0.010 -0.202 1.297
C3 -0.010 -0.202 -1.297
H4 0.220 1.608 0.000
H5 -0.772 -0.996 1.293
H6 -0.772 -0.996 -1.293
H7 0.961 -0.697 1.482
H8 -0.207 0.460 2.148
H9 0.961 -0.697 -1.482
H10 -0.207 0.460 -2.148

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49701.49701.08642.15162.15162.16432.15882.16432.1588
C21.49702.59372.23811.10022.81401.10571.09612.98483.5135
C31.49702.59372.23812.81401.10022.98483.51351.10571.0961
H41.08642.23812.23813.07163.07162.83842.47272.83842.4727
H52.15161.10022.81403.07162.58641.76811.78013.28493.7789
H62.15162.81401.10023.07162.58643.28493.77891.76811.7801
H72.16431.10572.98482.83841.76813.28491.77422.96343.9848
H82.15881.09613.51352.47271.78013.77891.77423.98484.2962
H92.16432.98481.10572.83843.28491.76812.96343.98481.7742
H102.15883.51351.09612.47273.77891.78013.98484.29621.7742

picture of Isopropyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.953 C1 C2 H7 111.633
C1 C2 H8 111.789 C1 C3 H6 110.953
C1 C3 H9 111.633 C1 C3 H10 111.789
C2 C1 C3 120.066 C2 C1 H4 119.217
C3 C1 H4 119.217 H5 C2 H7 106.558
H5 C2 H8 108.299 H6 C3 H9 106.558
H6 C3 H10 108.299 H7 C2 H8 107.374
H9 C3 H10 107.374
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.175      
2 C -0.663      
3 C -0.663      
4 H 0.201      
5 H 0.216      
6 H 0.216      
7 H 0.216      
8 H 0.218      
9 H 0.216      
10 H 0.218      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.194 -0.149 0.000 0.245
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.455 0.345 0.000
y 0.345 -20.159 0.000
z 0.000 0.000 -20.069
Traceless
 xyz
x -1.341 0.345 0.000
y 0.345 0.604 0.000
z 0.000 0.000 0.737
Polar
3z2-r21.474
x2-y2-1.296
xy0.345
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.619 0.062 0.000
y 0.062 4.512 0.000
z 0.000 0.000 5.209


<r2> (average value of r2) Å2
<r2> 61.402
(<r2>)1/2 7.836