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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-118.307998
Energy at 298.15K-118.314234
HF Energy-118.186159
Nuclear repulsion energy75.352756
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 B2PLYP/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' 3218 3055 32.13      
2 A' 3145 2986 22.59      
3 A' 3088 2931 49.93      
4 A' 3007 2854 45.57      
5 A' 1544 1466 3.78      
6 A' 1533 1455 11.66      
7 A' 1463 1389 2.71      
8 A' 1211 1149 2.93      
9 A' 1068 1013 0.17      
10 A' 903 857 1.60      
11 A' 425 403 17.38      
12 A' 363 345 7.11      
13 A' 141 134 0.11      
14 A" 3146 2986 25.67      
15 A" 3087 2930 7.69      
16 A" 3002 2850 24.41      
17 A" 1534 1456 0.68      
18 A" 1522 1445 0.99      
19 A" 1460 1385 5.45      
20 A" 1409 1337 4.66      
21 A" 1175 1115 0.03      
22 A" 970 920 1.27      
23 A" 961 913 0.30      
24 A" 125 118 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19748.9 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 18745.6 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 B2PLYP/6-31G*
ABC
1.24703 0.27744 0.24815

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 0.538 0.000
C2 -0.013 -0.199 1.297
C3 -0.013 -0.199 -1.297
H4 0.275 1.585 0.000
H5 -0.746 -1.014 1.292
H6 -0.746 -1.014 -1.292
H7 0.965 -0.662 1.510
H8 -0.244 0.460 2.139
H9 0.965 -0.662 -1.510
H10 -0.244 0.460 -2.139

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49201.49201.08552.14852.14852.16282.15312.16282.1531
C21.49202.59492.22411.09652.81201.10271.09353.00913.5068
C31.49202.59492.22412.81201.09653.00913.50681.10271.0935
H41.08552.22412.22413.07663.07662.79392.47202.79392.4720
H52.14851.09652.81203.07662.58401.76021.77273.30213.7680
H62.14852.81201.09653.07662.58403.30213.76801.76021.7727
H72.16281.10273.00912.79391.76023.30211.76523.02084.0050
H82.15311.09353.50682.47201.77273.76801.76524.00504.2784
H92.16283.00911.10272.79393.30211.76023.02084.00501.7652
H102.15313.50681.09352.47203.76801.77274.00504.27841.7652

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 111.278 C1 C2 H7 112.051
C1 C2 H8 111.839 C1 C3 H6 111.278
C1 C3 H9 112.051 C1 C3 H10 111.839
C2 C1 C3 120.822 C2 C1 H4 118.432
C3 C1 H4 118.432 H5 C2 H7 106.326
H5 C2 H8 108.081 H6 C3 H9 106.326
H6 C3 H10 108.081 H7 C2 H8 106.978
H9 C3 H10 106.978
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.116      
2 C -0.482      
3 C -0.482      
4 H 0.145      
5 H 0.155      
6 H 0.155      
7 H 0.154      
8 H 0.158      
9 H 0.154      
10 H 0.158      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.880 0.081 0.000
y 0.081 4.698 0.000
z 0.000 0.000 5.382


<r2> (average value of r2) Å2
<r2> 61.491
(<r2>)1/2 7.842