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

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-21.088307
Energy at 298.15K-21.094324
HF Energy-21.088307
Nuclear repulsion energy43.909712
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 B3LYP/CEP-121G
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' 3126 3047 59.84      
2 A' 3064 2986 25.58      
3 A' 2987 2911 99.85      
4 A' 2920 2845 69.17      
5 A' 1518 1480 5.04      
6 A' 1505 1466 20.40      
7 A' 1436 1399 5.07      
8 A' 1185 1155 3.78      
9 A' 1031 1004 0.32      
10 A' 873 851 2.24      
11 A' 372 363 5.26      
12 A' 327 319 30.01      
13 A' 84 82 2.61      
14 A" 3066 2988 46.05      
15 A" 2985 2909 6.42      
16 A" 2913 2839 42.27      
17 A" 1505 1467 3.37      
18 A" 1494 1456 0.56      
19 A" 1425 1389 9.47      
20 A" 1369 1334 5.58      
21 A" 1145 1116 0.26      
22 A" 962 937 0.54      
23 A" 946 922 0.33      
24 A" 103 101 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19170.4 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 18681.6 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 B3LYP/CEP-121G
ABC
1.21981 0.27043 0.24141

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.010 0.561 0.000
C2 -0.010 -0.188 1.317
C3 -0.010 -0.188 -1.317
H4 0.153 1.640 0.000
H5 -0.800 -0.956 1.342
H6 -0.800 -0.956 -1.342
H7 0.945 -0.722 1.488
H8 -0.164 0.486 2.169
H9 0.945 -0.722 -1.488
H10 -0.164 0.486 -2.169

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.51451.51451.09162.17402.17402.18412.17572.18412.1757
C21.51452.63322.25851.10282.87801.10741.09733.01013.5534
C31.51452.63322.25852.87801.10283.01013.55341.10741.0973
H41.09162.25852.25853.07393.07392.90182.47722.90182.4772
H52.17401.10282.87803.07392.68381.76721.78003.33283.8484
H62.17402.87801.10283.07392.68383.33283.84841.76721.7800
H72.18411.10743.01012.90181.76723.33281.77562.97524.0073
H82.17571.09733.55342.47721.78003.84841.77564.00734.3379
H92.18413.01011.10742.90183.33281.76722.97524.00731.7756
H102.17573.55341.09732.47723.84841.78004.00734.33791.7756

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 111.359 C1 C2 H7 111.884
C1 C2 H8 111.830 C1 C3 H6 111.359
C1 C3 H9 111.884 C1 C3 H10 111.830
C2 C1 C3 120.764 C2 C1 H4 119.255
C3 C1 H4 119.255 H5 C2 H7 106.177
H5 C2 H8 108.011 H6 C3 H9 106.177
H6 C3 H10 108.011 H7 C2 H8 107.294
H9 C3 H10 107.294
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.001      
2 C -0.510      
3 C -0.510      
4 H 0.125      
5 H 0.149      
6 H 0.149      
7 H 0.148      
8 H 0.151      
9 H 0.148      
10 H 0.151      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.149 -0.131 0.000 0.198
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.892 0.277 0.000
y 0.277 -20.777 0.000
z 0.000 0.000 -20.733
Traceless
 xyz
x -1.137 0.277 0.000
y 0.277 0.536 0.000
z 0.000 0.000 0.602
Polar
3z2-r21.203
x2-y2-1.116
xy0.277
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.530 0.006 0.000
y 0.006 5.387 0.000
z 0.000 0.000 5.996


<r2> (average value of r2) Å2
<r2> 55.221
(<r2>)1/2 7.431