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

using model chemistry: B2PLYP/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 B2PLYP/3-21G*
 hartrees
Energy at 0K-117.625932
Energy at 298.15K-117.632152
HF Energy-117.540578
Nuclear repulsion energy75.104289
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/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' 3213 3213 25.37      
2 A' 3131 3131 16.29      
3 A' 3076 3076 42.01      
4 A' 3002 3002 37.47      
5 A' 1583 1583 5.49      
6 A' 1573 1573 14.95      
7 A' 1488 1488 5.51      
8 A' 1229 1229 6.08      
9 A' 1090 1090 1.64      
10 A' 871 871 1.40      
11 A' 406 406 13.27      
12 A' 354 354 17.66      
13 A' 132 132 0.33      
14 A" 3132 3132 24.05      
15 A" 3074 3074 5.71      
16 A" 2999 2999 15.52      
17 A" 1571 1571 1.81      
18 A" 1560 1560 0.60      
19 A" 1472 1472 4.50      
20 A" 1416 1416 8.59      
21 A" 1138 1138 0.63      
22 A" 1002 1002 1.15      
23 A" 990 990 0.75      
24 A" 128 128 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19813.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19813.6 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/3-21G*
ABC
1.22546 0.27641 0.24658

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 0.549 0.000
C2 -0.012 -0.203 1.302
C3 -0.012 -0.203 -1.302
H4 0.259 1.598 0.000
H5 -0.767 -0.998 1.291
H6 -0.767 -0.998 -1.291
H7 0.960 -0.688 1.490
H8 -0.219 0.458 2.148
H9 0.960 -0.688 -1.490
H10 -0.219 0.458 -2.148

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.50311.50311.08382.15202.15202.16642.15982.16642.1598
C21.50312.60332.23871.09682.81541.10231.09352.99533.5184
C31.50312.60332.23872.81541.09682.99533.51841.10231.0935
H41.08382.23872.23873.07613.07612.81722.47842.81722.4784
H52.15201.09682.81543.07612.58261.76591.77613.28843.7748
H62.15202.81541.09683.07612.58263.28843.77481.76591.7761
H72.16641.10232.99532.81721.76593.28841.77082.97963.9920
H82.15981.09353.51842.47841.77613.77481.77083.99204.2959
H92.16642.99531.10232.81723.28841.76592.97963.99201.7708
H102.15983.51841.09352.47843.77481.77613.99204.29591.7708

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 110.760 C1 C2 H7 111.579
C1 C2 H8 111.594 C1 C3 H6 110.760
C1 C3 H9 111.579 C1 C3 H10 111.594
C2 C1 C3 119.989 C2 C1 H4 118.960
C3 C1 H4 118.960 H5 C2 H7 106.838
H5 C2 H8 108.368 H6 C3 H9 106.838
H6 C3 H10 108.368 H7 C2 H8 107.501
H9 C3 H10 107.501
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.157      
2 C -0.592      
3 C -0.592      
4 H 0.179      
5 H 0.193      
6 H 0.193      
7 H 0.193      
8 H 0.195      
9 H 0.193      
10 H 0.195      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.208 -0.131 0.000 0.246
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.650 0.370 0.000
y 0.370 -20.563 0.000
z 0.000 0.000 -20.521
Traceless
 xyz
x -1.108 0.370 0.000
y 0.370 0.523 0.000
z 0.000 0.000 0.586
Polar
3z2-r21.171
x2-y2-1.087
xy0.370
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.575 0.086 0.000
y 0.086 4.432 0.000
z 0.000 0.000 5.062


<r2> (average value of r2) Å2
<r2> 61.793
(<r2>)1/2 7.861