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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-118.238991
Energy at 298.15K-118.245199
HF Energy-118.153466
Nuclear repulsion energy75.063185
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
(Å4/u)
Dep P Dep U
1 A' 3211 3211 35.65      
2 A' 3130 3130 23.44      
3 A' 3065 3065 62.74      
4 A' 2990 2990 49.99      
5 A' 1559 1559 4.75      
6 A' 1545 1545 15.05      
7 A' 1483 1483 3.96      
8 A' 1229 1229 4.36      
9 A' 1083 1083 0.73      
10 A' 899 899 1.55      
11 A' 409 409 14.80      
12 A' 365 365 13.86      
13 A' 122 122 0.48      
14 A" 3131 3131 31.33      
15 A" 3064 3064 6.57      
16 A" 2986 2986 26.54      
17 A" 1548 1548 1.92      
18 A" 1536 1536 0.72      
19 A" 1469 1469 5.13      
20 A" 1426 1426 7.12      
21 A" 1181 1181 0.25      
22 A" 998 998 0.88      
23 A" 983 983 0.54      
24 A" 118 118 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19764.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19764.3 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
1.23880 0.27484 0.24569

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 -0.010 0.540 0.000
C2 -0.010 -0.200 1.305
C3 -0.010 -0.200 -1.305
H4 0.216 1.603 0.000
H5 -0.759 -1.003 1.306
H6 -0.759 -1.003 -1.306
H7 0.963 -0.682 1.509
H8 -0.224 0.464 2.148
H9 0.963 -0.682 -1.509
H10 -0.224 0.464 -2.148

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49961.49961.08662.15592.15592.17132.16012.17132.1601
C21.49962.60912.23641.09892.83211.10441.09493.01563.5225
C31.49962.60912.23642.83211.09893.01563.52251.10441.0949
H41.08662.23642.23643.07363.07362.83792.47052.83792.4705
H52.15591.09892.83213.07362.61141.76351.77513.31533.7908
H62.15592.83211.09893.07362.61143.31533.79081.76351.7751
H72.17131.10443.01562.83791.76353.31531.76923.01794.0120
H82.16011.09493.52252.47051.77513.79081.76924.01204.2963
H92.17133.01561.10442.83793.31531.76353.01794.01201.7692
H102.16013.52251.09492.47053.79081.77514.01204.29631.7692

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 111.194 C1 C2 H7 112.104
C1 C2 H8 111.783 C1 C3 H6 111.194
C1 C3 H9 112.104 C1 C3 H10 111.783
C2 C1 C3 120.902 C2 C1 H4 118.844
C3 C1 H4 118.844 H5 C2 H7 106.336
H5 C2 H8 108.027 H6 C3 H9 106.336
H6 C3 H10 108.027 H7 C2 H8 107.115
H9 C3 H10 107.115
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 -0.074      
2 C -0.450      
3 C -0.450      
4 H 0.123      
5 H 0.141      
6 H 0.141      
7 H 0.142      
8 H 0.142      
9 H 0.142      
10 H 0.142      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.170 -0.110 0.000 0.203
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.611 0.293 0.000
y 0.293 -20.641 0.000
z 0.000 0.000 -20.615
Traceless
 xyz
x -0.983 0.293 0.000
y 0.293 0.472 0.000
z 0.000 0.000 0.510
Polar
3z2-r21.021
x2-y2-0.970
xy0.293
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.819 0.058 0.000
y 0.058 4.693 0.000
z 0.000 0.000 5.278


<r2> (average value of r2) Å2
<r2> 62.028
(<r2>)1/2 7.876