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

using model chemistry: PBE1PBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at PBE1PBE/6-31G
 hartrees
Energy at 0K-118.296224
Energy at 298.15K-118.302350
HF Energy-118.296224
Nuclear repulsion energy75.337672
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 PBE1PBE/6-31G
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' 3223 3080 29.73      
2 A' 3145 3006 17.22      
3 A' 3066 2931 60.16      
4 A' 2995 2863 43.38      
5 A' 1540 1473 5.64      
6 A' 1526 1459 20.83      
7 A' 1464 1399 6.80      
8 A' 1219 1165 5.99      
9 A' 1064 1017 2.12      
10 A' 916 875 2.21      
11 A' 394 377 9.60      
12 A' 356 340 22.88      
13 A' 98 94 1.30      
14 A" 3146 3007 27.50      
15 A" 3066 2930 4.52      
16 A" 2989 2857 29.12      
17 A" 1526 1459 3.28      
18 A" 1516 1449 1.06      
19 A" 1452 1388 11.48      
20 A" 1413 1351 3.41      
21 A" 1194 1142 0.32      
22 A" 985 942 0.94      
23 A" 974 931 0.82      
24 A" 111 107 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 19688.2 cm-1
Scaled (by 0.9559) Zero Point Vibrational Energy (zpe) 18819.9 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 PBE1PBE/6-31G
ABC
1.24281 0.27808 0.24827

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.008 0.537 0.000
C2 -0.008 -0.198 1.296
C3 -0.008 -0.198 -1.296
H4 0.168 1.610 0.000
H5 -0.776 -0.986 1.310
H6 -0.776 -0.986 -1.310
H7 0.954 -0.707 1.484
H8 -0.191 0.466 2.146
H9 0.954 -0.707 -1.484
H10 -0.191 0.466 -2.146

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49011.49011.08692.15072.15072.16292.15502.16292.1550
C21.49012.59162.23161.09982.82831.10471.09472.98553.5102
C31.49012.59162.23162.82831.09982.98553.51021.10471.0947
H41.08692.23162.23163.05703.05702.86182.45822.86182.4582
H52.15071.09982.82833.05702.62001.76081.77453.29813.7939
H62.15072.82831.09983.05702.62003.29813.79391.76081.7745
H72.16291.10472.98552.86181.76083.29811.76862.96843.9835
H82.15501.09473.51022.45821.77453.79391.76863.98354.2920
H92.16292.98551.10472.86183.29811.76082.96843.98351.7686
H102.15503.51021.09472.45823.79391.77453.98354.29201.7686

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 111.392 C1 C2 H7 112.074
C1 C2 H8 112.061 C1 C3 H6 111.392
C1 C3 H9 112.074 C1 C3 H10 112.061
C2 C1 C3 120.820 C2 C1 H4 119.159
C3 C1 H4 119.159 H5 C2 H7 106.019
H5 C2 H8 107.920 H6 C3 H9 106.019
H6 C3 H10 107.920 H7 C2 H8 107.052
H9 C3 H10 107.052
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.099      
2 C -0.538      
3 C -0.538      
4 H 0.152      
5 H 0.170      
6 H 0.170      
7 H 0.171      
8 H 0.171      
9 H 0.171      
10 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.149 -0.125 0.000 0.195
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.403 0.254 0.000
y 0.254 -20.227 0.000
z 0.000 0.000 -20.165
Traceless
 xyz
x -1.207 0.254 0.000
y 0.254 0.557 0.000
z 0.000 0.000 0.650
Polar
3z2-r21.300
x2-y2-1.176
xy0.254
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.832 0.036 0.000
y 0.036 4.730 0.000
z 0.000 0.000 5.345


<r2> (average value of r2) Å2
<r2> 61.366
(<r2>)1/2 7.834