return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B97D3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at B97D3/6-31+G**
 hartrees
Energy at 0K-118.413914
Energy at 298.15K-118.419930
HF Energy-118.413914
Nuclear repulsion energy75.115401
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 B97D3/6-31+G**
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' 3131 3077 35.28      
2 A' 3052 2999 21.63      
3 A' 2970 2919 65.03      
4 A' 2899 2849 66.07      
5 A' 1468 1443 5.05      
6 A' 1454 1429 15.64      
7 A' 1388 1364 3.76      
8 A' 1157 1137 2.14      
9 A' 1002 985 0.10      
10 A' 876 861 2.18      
11 A' 384 377 8.89      
12 A' 339 333 22.35      
13 A' 101 99 1.65      
14 A" 3053 3001 36.59      
15 A" 2969 2918 10.17      
16 A" 2892 2843 37.82      
17 A" 1452 1427 1.45      
18 A" 1443 1418 0.65      
19 A" 1385 1362 6.73      
20 A" 1339 1316 3.67      
21 A" 1132 1113 0.43      
22 A" 926 911 0.93      
23 A" 921 905 0.15      
24 A" 105 103 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 18919.2 cm-1
Scaled (by 0.9828) Zero Point Vibrational Energy (zpe) 18593.8 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 B97D3/6-31+G**
ABC
1.23461 0.27669 0.24698

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.009 0.539 0.000
C2 -0.009 -0.198 1.299
C3 -0.009 -0.198 -1.299
H4 0.187 1.613 0.000
H5 -0.782 -0.987 1.315
H6 -0.782 -0.987 -1.315
H7 0.955 -0.716 1.483
H8 -0.184 0.468 2.154
H9 0.955 -0.716 -1.483
H10 -0.184 0.468 -2.154

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49391.49391.09102.15762.15762.16882.16252.16882.1625
C21.49392.59792.23731.10392.83731.10941.09842.98903.5213
C31.49392.59792.23732.83731.10392.98903.52131.10941.0984
H41.09102.23732.23733.06993.06992.86562.46742.86562.4674
H52.15761.10392.83733.06992.62961.76521.78293.30363.8090
H62.15762.83731.10393.06992.62963.30363.80901.76521.7829
H72.16881.10942.98902.86561.76523.30361.77532.96523.9909
H82.16251.09843.52132.46741.78293.80901.77533.99094.3084
H92.16882.98901.10942.86563.30361.76522.96523.99091.7753
H102.16253.52131.09842.46743.80901.78293.99094.30841.7753

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 111.425 C1 C2 H7 111.991
C1 C2 H8 112.164 C1 C3 H6 111.425
C1 C3 H9 111.991 C1 C3 H10 112.164
C2 C1 C3 120.807 C2 C1 H4 119.069
C3 C1 H4 119.069 H5 C2 H7 105.789
H5 C2 H8 108.098 H6 C3 H9 105.789
H6 C3 H10 108.098 H7 C2 H8 107.039
H9 C3 H10 107.039
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.048      
2 C -0.565      
3 C -0.565      
4 H 0.144      
5 H 0.155      
6 H 0.155      
7 H 0.156      
8 H 0.158      
9 H 0.156      
10 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.169 -0.156 0.000 0.230
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.943 0.319 0.000
y 0.319 -20.912 0.000
z 0.000 0.000 -20.853
Traceless
 xyz
x -1.060 0.319 0.000
y 0.319 0.486 0.000
z 0.000 0.000 0.574
Polar
3z2-r21.148
x2-y2-1.031
xy0.319
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.961 -0.061 0.000
y -0.061 5.619 0.000
z 0.000 0.000 6.437


<r2> (average value of r2) Å2
<r2> 62.026
(<r2>)1/2 7.876