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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at HF/6-31+G**
 hartrees
Energy at 0K-117.649346
Energy at 298.15K-117.655746
HF Energy-117.649346
Nuclear repulsion energy75.430432
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 HF/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' 3312 2995 44.33      
2 A' 3240 2930 34.48      
3 A' 3196 2890 66.61      
4 A' 3126 2826 63.36      
5 A' 1613 1459 4.51      
6 A' 1608 1454 13.17      
7 A' 1545 1397 2.79      
8 A' 1276 1154 1.72      
9 A' 1129 1020 0.62      
10 A' 926 837 1.66      
11 A' 461 417 21.01      
12 A' 373 337 6.15      
13 A' 166 150 0.21      
14 A" 3241 2930 37.98      
15 A" 3193 2887 12.11      
16 A" 3121 2822 30.66      
17 A" 1604 1450 0.78      
18 A" 1597 1444 1.21      
19 A" 1545 1397 5.63      
20 A" 1475 1334 4.69      
21 A" 1204 1089 0.07      
22 A" 1025 927 0.27      
23 A" 1011 914 0.33      
24 A" 130 117 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20558.5 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 18589.0 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 HF/6-31+G**
ABC
1.24615 0.27710 0.24781

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 0.545 0.000
C2 -0.015 -0.201 1.300
C3 -0.015 -0.201 -1.300
H4 0.334 1.565 0.000
H5 -0.773 -0.981 1.306
H6 -0.773 -0.981 -1.306
H7 0.945 -0.690 1.483
H8 -0.206 0.459 2.139
H9 0.945 -0.690 -1.483
H10 -0.206 0.459 -2.139

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49941.49941.07792.14692.14692.15562.14972.15562.1497
C21.49942.60042.22101.08742.82381.09241.08512.98413.5077
C31.49942.60042.22102.82381.08742.98413.50771.09241.0851
H41.07792.22102.22103.06813.06812.76742.46822.76742.4682
H52.14691.08742.82383.06812.61181.75131.75783.28823.7769
H62.14692.82381.08743.06812.61183.28823.77691.75131.7578
H72.15561.09242.98412.76741.75133.28821.75442.96563.9708
H82.14971.08513.50772.46821.75783.77691.75443.97084.2788
H92.15562.98411.09242.76743.28821.75132.96563.97081.7544
H102.14973.50771.08512.46823.77691.75783.97084.27881.7544

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 111.190 C1 C2 H7 111.584
C1 C2 H8 111.554 C1 C3 H6 111.190
C1 C3 H9 111.584 C1 C3 H10 111.554
C2 C1 C3 120.261 C2 C1 H4 118.110
C3 C1 H4 118.110 H5 C2 H7 106.915
H5 C2 H8 108.020 H6 C3 H9 106.915
H6 C3 H10 108.020 H7 C2 H8 107.352
H9 C3 H10 107.352
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.005      
2 C -0.454      
3 C -0.454      
4 H 0.128      
5 H 0.129      
6 H 0.129      
7 H 0.130      
8 H 0.134      
9 H 0.130      
10 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.258 -0.110 0.000 0.281
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.727 0.524 0.000
y 0.524 -21.011 0.000
z 0.000 0.000 -21.092
Traceless
 xyz
x -0.675 0.524 0.000
y 0.524 0.398 0.000
z 0.000 0.000 0.277
Polar
3z2-r20.554
x2-y2-0.716
xy0.524
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.457 0.007 0.000
y 0.007 4.949 0.000
z 0.000 0.000 5.426


<r2> (average value of r2) Å2
<r2> 61.739
(<r2>)1/2 7.857