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

using model chemistry: HF/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 HF/CEP-121G
 hartrees
Energy at 0K-20.453771
Energy at 298.15K-20.460102
HF Energy-20.453771
Nuclear repulsion energy44.171345
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 HF/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' 3270 2984 82.38      
2 A' 3222 2940 32.42      
3 A' 3177 2899 108.33      
4 A' 3098 2827 64.71      
5 A' 1634 1491 5.57      
6 A' 1627 1484 17.63      
7 A' 1559 1423 4.51      
8 A' 1284 1172 3.10      
9 A' 1134 1035 0.08      
10 A' 921 840 1.79      
11 A' 432 394 18.67      
12 A' 362 331 11.75      
13 A' 145 133 0.33      
14 A" 3224 2942 46.65      
15 A" 3173 2895 9.23      
16 A" 3093 2822 46.79      
17 A" 1624 1482 2.35      
18 A" 1616 1475 1.00      
19 A" 1551 1415 9.42      
20 A" 1477 1348 5.72      
21 A" 1210 1104 0.01      
22 A" 1044 952 0.06      
23 A" 1022 932 0.83      
24 A" 113 103 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20505.2 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 18711.0 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 HF/CEP-121G
ABC
1.23242 0.27187 0.24305

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.017 0.565 0.000
C2 -0.017 -0.189 1.314
C3 -0.017 -0.189 -1.314
H4 0.294 1.600 0.000
H5 -0.781 -0.965 1.321
H6 -0.781 -0.965 -1.321
H7 0.941 -0.683 1.496
H8 -0.205 0.475 2.153
H9 0.941 -0.683 -1.496
H10 -0.205 0.475 -2.153

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.51521.51521.08092.16052.16052.17112.16352.17112.1635
C21.51522.62892.24171.08882.85161.09351.08623.01023.5359
C31.51522.62892.24172.85161.08883.01023.53591.09351.0862
H41.08092.24172.24173.07863.07862.80562.48032.80562.4803
H52.16051.08882.85163.07862.64221.75421.75973.31403.8048
H62.16052.85161.08883.07862.64223.31403.80481.75421.7597
H72.17111.09353.01022.80561.75423.31401.75712.99203.9967
H82.16351.08623.53592.48031.75973.80481.75713.99674.3069
H92.17113.01021.09352.80563.31401.75422.99203.99671.7571
H102.16353.53591.08622.48033.80481.75973.99674.30691.7571

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 111.074 C1 C2 H7 111.645
C1 C2 H8 111.470 C1 C3 H6 111.074
C1 C3 H9 111.645 C1 C3 H10 111.470
C2 C1 C3 120.337 C2 C1 H4 118.455
C3 C1 H4 118.455 H5 C2 H7 106.995
H5 C2 H8 108.008 H6 C3 H9 106.995
H6 C3 H10 108.008 H7 C2 H8 107.435
H9 C3 H10 107.435
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.000      
2 C -0.494      
3 C -0.494      
4 H 0.122      
5 H 0.143      
6 H 0.143      
7 H 0.142      
8 H 0.148      
9 H 0.142      
10 H 0.148      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.245 -0.123 0.000 0.274
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.716 0.474 0.000
y 0.474 -20.929 0.000
z 0.000 0.000 -20.970
Traceless
 xyz
x -0.766 0.474 0.000
y 0.474 0.414 0.000
z 0.000 0.000 0.353
Polar
3z2-r20.705
x2-y2-0.787
xy0.474
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.257 0.065 0.000
y 0.065 4.901 0.000
z 0.000 0.000 5.298


<r2> (average value of r2) Å2
<r2> 54.842
(<r2>)1/2 7.406