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

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G
 hartrees
Energy at 0K-21.077675
Energy at 298.15K-21.083495
HF Energy-21.077675
Nuclear repulsion energy43.711248
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-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 A1 3184 3083 64.18      
2 A1 3111 3013 36.61      
3 A1 2983 2889 50.94      
4 A1 1507 1460 6.12      
5 A1 1430 1385 7.85      
6 A1 1189 1151 7.30      
7 A1 885 857 1.97      
8 A1 357 345 0.37      
9 A2 3024 2928 0.00      
10 A2 1482 1435 0.00      
11 A2 963 933 0.00      
12 A2 81 78 0.00      
13 B1 3027 2931 138.77      
14 B1 1492 1445 22.71      
15 B1 1017 984 1.53      
16 B1 321 311 59.51      
17 B1 31 30 8.73      
18 B2 3111 3012 59.13      
19 B2 2978 2884 41.74      
20 B2 1493 1445 4.07      
21 B2 1424 1379 14.05      
22 B2 1362 1319 3.75      
23 B2 1148 1112 0.27      
24 B2 940 911 1.42      

Unscaled Zero Point Vibrational Energy (zpe) 19268.8 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 18659.9 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-31G
ABC
1.19425 0.26969 0.23991

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.571
C2 0.000 1.318 -0.190
C3 0.000 -1.318 -0.190
H4 0.000 0.000 1.666
H5 0.000 2.187 0.490
H6 0.000 -2.187 0.490
H7 0.888 1.406 -0.852
H8 -0.888 1.406 -0.852
H9 -0.888 -1.406 -0.852
H10 0.888 -1.406 -0.852

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.52241.52241.09522.18842.18842.18872.18872.18872.1887
C21.52242.63692.27701.10343.57081.11091.11092.94102.9410
C31.52242.63692.27703.57081.10342.94102.94101.11091.1109
H41.09522.27702.27702.48302.48303.01783.01783.01783.0178
H52.18841.10343.57082.48304.37391.78891.78893.93703.9370
H62.18843.57081.10342.48304.37393.93703.93701.78891.7889
H72.18871.11092.94103.01781.78893.93701.77583.32592.8122
H82.18871.11092.94103.01781.78893.93701.77582.81223.3259
H92.18872.94101.11093.01783.93701.78893.32592.81221.7758
H102.18872.94101.11093.01783.93701.78892.81223.32591.7758

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 111.910 C1 C2 H7 111.483
C1 C2 H8 111.483 C1 C3 H6 111.910
C1 C3 H9 111.483 C1 C3 H10 111.483
C2 C1 C3 119.995 C2 C1 H4 120.003
C3 C1 H4 120.003 H5 C2 H7 107.781
H5 C2 H8 107.781 H6 C3 H9 107.781
H6 C3 H10 107.781 H7 C2 H8 106.126
H9 C3 H10 106.126
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.195      
2 C -0.452      
3 C -0.452      
4 H 0.223      
5 H 0.155      
6 H 0.155      
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
  0.000 0.000 -0.144 0.144
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.333 0.000 0.000
y 0.000 -20.289 0.000
z 0.000 0.000 -20.052
Traceless
 xyz
x -1.163 0.000 0.000
y 0.000 0.404 0.000
z 0.000 0.000 0.759
Polar
3z2-r21.518
x2-y2-1.044
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.716 0.000 0.000
y 0.000 5.298 0.000
z 0.000 0.000 4.612


<r2> (average value of r2) Å2
<r2> 55.128
(<r2>)1/2 7.425