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

using model chemistry: TPSSh/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 TPSSh/3-21G*
 hartrees
Energy at 0K-117.844361
Energy at 298.15K-117.850510
HF Energy-117.844361
Nuclear repulsion energy74.962730
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 TPSSh/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' 3173 3064 32.34      
2 A' 3096 2990 17.57      
3 A' 3037 2933 48.25      
4 A' 2959 2858 47.32      
5 A' 1563 1509 5.35      
6 A' 1553 1500 15.13      
7 A' 1465 1414 5.57      
8 A' 1208 1167 6.51      
9 A' 1065 1028 1.92      
10 A' 862 832 1.52      
11 A' 392 379 14.07      
12 A' 343 331 19.08      
13 A' 126 122 0.29      
14 A" 3097 2991 29.15      
15 A" 3036 2932 7.90      
16 A" 2954 2852 19.43      
17 A" 1549 1496 1.58      
18 A" 1539 1486 0.67      
19 A" 1447 1397 3.90      
20 A" 1389 1342 9.43      
21 A" 1124 1086 0.73      
22 A" 978 944 1.35      
23 A" 968 935 0.79      
24 A" 121 117 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19521.7 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 18852.1 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 TPSSh/3-21G*
ABC
1.21932 0.27580 0.24595

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/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 1.303
C3 -0.012 -0.203 -1.303
H4 0.250 1.605 0.000
H5 -0.758 -1.011 1.287
H6 -0.758 -1.011 -1.287
H7 0.968 -0.678 1.498
H8 -0.232 0.457 2.151
H9 0.968 -0.678 -1.498
H10 -0.232 0.457 -2.151

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.50441.50441.08782.15642.15642.17092.16432.17092.1643
C21.50442.60542.24401.10042.81401.10661.09693.00523.5231
C31.50442.60542.24402.81401.10043.00523.52311.10661.0969
H41.08782.24402.24403.08543.08542.82412.48582.82412.4858
H52.15641.10042.81403.08542.57461.77111.78253.29413.7754
H62.15642.81401.10043.08542.57463.29413.77541.77111.7825
H72.17091.10663.00522.82411.77113.29411.77602.99654.0057
H82.16431.09693.52312.48581.78253.77541.77604.00574.3022
H92.17093.00521.10662.82413.29411.77112.99654.00571.7760
H102.16433.52311.09692.48583.77541.78254.00574.30221.7760

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 110.806 C1 C2 H7 111.584
C1 C2 H8 111.654 C1 C3 H6 110.806
C1 C3 H9 111.584 C1 C3 H10 111.654
C2 C1 C3 119.974 C2 C1 H4 119.045
C3 C1 H4 119.045 H5 C2 H7 106.739
H5 C2 H8 108.435 H6 C3 H9 106.739
H6 C3 H10 108.435 H7 C2 H8 107.412
H9 C3 H10 107.412
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.175      
2 C -0.631      
3 C -0.631      
4 H 0.195      
5 H 0.206      
6 H 0.206      
7 H 0.206      
8 H 0.208      
9 H 0.206      
10 H 0.208      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.210 -0.146 0.000 0.256
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 3.652 0.076 0.000
y 0.076 4.550 0.000
z 0.000 0.000 5.294


<r2> (average value of r2) Å2
<r2> 61.805
(<r2>)1/2 7.862