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

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at G4
 hartrees
Energy at 0K-118.361373
Energy at 298.15K-118.355247
HF Energy-118.489046
Nuclear repulsion energy75.303526
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/6-31G(2df,p)
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' 3170 3059 29.25      
2 A' 3091 2983 20.92      
3 A' 3033 2927 44.74      
4 A' 2948 2845 47.63      
5 A' 1490 1438 3.23      
6 A' 1480 1428 9.28      
7 A' 1412 1363 2.18      
8 A' 1178 1136 2.95      
9 A' 1034 998 0.07      
10 A' 883 852 1.45      
11 A' 414 400 15.02      
12 A' 363 350 5.13      
13 A' 123 119 0.05      
14 A" 3092 2984 24.35      
15 A" 3031 2925 9.09      
16 A" 2943 2840 26.13      
17 A" 1479 1428 0.22      
18 A" 1469 1418 0.66      
19 A" 1405 1356 4.92      
20 A" 1368 1320 5.41      
21 A" 1151 1111 0.14      
22 A" 941 908 1.64      
23 A" 936 904 0.00      
24 A" 112 108 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 19273.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 18598.6 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/6-31G(2df,p)
ABC
1.25468 0.27625 0.24734

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 0.533 0.000
C2 -0.012 -0.197 1.300
C3 -0.012 -0.197 -1.300
H4 0.237 1.590 0.000
H5 -0.717 -1.038 1.290
H6 -0.717 -1.038 -1.290
H7 0.977 -0.631 1.536
H8 -0.275 0.457 2.137
H9 0.977 -0.631 -1.536
H10 -0.275 0.457 -2.137

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49061.49061.08612.15192.15192.16572.15472.16572.1547
C21.49062.59982.22371.09792.81341.10481.09473.03433.5087
C31.49062.59982.22372.81341.09793.03433.50871.10481.0947
H41.08612.22372.22373.07943.07942.80012.47242.80012.4724
H52.15191.09792.81343.07942.58081.75881.77463.31993.7658
H62.15192.81341.09793.07942.58083.31993.76581.75881.7746
H72.16571.10483.03432.80011.75883.31991.76403.07214.0303
H82.15471.09473.50872.47241.77463.76581.76404.03034.2745
H92.16573.03431.10482.80013.31991.75883.07214.03031.7640
H102.15473.50871.09472.47243.76581.77464.03034.27451.7640

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 111.563 C1 C2 H7 112.249
C1 C2 H8 112.017 C1 C3 H6 111.563
C1 C3 H9 112.249 C1 C3 H10 112.017
C2 C1 C3 121.339 C2 C1 H4 118.498
C3 C1 H4 118.498 H5 C2 H7 105.942
H5 C2 H8 108.062 H6 C3 H9 105.942
H6 C3 H10 108.062 H7 C2 H8 106.662
H9 C3 H10 106.662
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.030      
2 C -0.387      
3 C -0.387      
4 H 0.091      
5 H 0.117      
6 H 0.117      
7 H 0.119      
8 H 0.120      
9 H 0.119      
10 H 0.120      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.158 -0.107 0.000 0.191
CHELPG        
AIM        
ESP        


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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 61.542
(<r2>)1/2 7.845