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/STO-3G

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/STO-3G
 hartrees
Energy at 0K-117.012876
Energy at 298.15K-117.018854
HF Energy-117.012876
Nuclear repulsion energy74.093507
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/STO-3G
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' 3392 3392 7.69      
2 A' 3365 3365 2.54      
3 A' 3332 3332 7.86      
4 A' 3188 3188 2.77      
5 A' 1653 1653 3.22      
6 A' 1641 1641 6.44      
7 A' 1550 1550 1.50      
8 A' 1251 1251 8.39      
9 A' 1111 1111 2.21      
10 A' 919 919 0.85      
11 A' 436 436 7.31      
12 A' 358 358 4.69      
13 A' 125 125 0.12      
14 A" 3388 3388 1.32      
15 A" 3332 3332 0.53      
16 A" 3186 3186 6.99      
17 A" 1649 1649 0.25      
18 A" 1636 1636 0.10      
19 A" 1535 1535 1.14      
20 A" 1463 1463 17.87      
21 A" 1197 1197 0.00      
22 A" 1022 1022 0.11      
23 A" 1000 1000 1.12      
24 A" 98 98 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20912.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20912.6 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 B97D3/STO-3G
ABC
1.20841 0.26713 0.23924

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 0.548 0.000
C2 -0.015 -0.204 1.324
C3 -0.015 -0.204 -1.324
H4 0.342 1.594 0.000
H5 -0.711 -1.067 1.290
H6 -0.711 -1.067 -1.290
H7 0.994 -0.608 1.573
H8 -0.319 0.458 2.159
H9 0.994 -0.608 -1.573
H10 -0.319 0.458 -2.159

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.52301.52301.10462.18062.18062.19702.18222.19702.1822
C21.52302.64822.26121.10852.83891.11461.10793.09373.5585
C31.52302.64822.26122.83891.10853.09373.55851.11461.1079
H41.10462.26122.26123.13823.13822.78292.52762.78292.5276
H52.18061.10852.83893.13822.57941.78781.79793.36283.7908
H62.18062.83891.10853.13822.57943.36283.79081.78781.7979
H72.19701.11463.09372.78291.78783.36281.78943.14514.0967
H82.18221.10793.55852.52761.79793.79081.78944.09674.3182
H92.19703.09371.11462.78293.36281.78783.14514.09671.7894
H102.18223.55851.10792.52763.79081.79794.09674.31821.7894

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 110.942 C1 C2 H7 111.880
C1 C2 H8 111.104 C1 C3 H6 110.942
C1 C3 H9 111.880 C1 C3 H10 111.104
C2 C1 C3 120.774 C2 C1 H4 117.884
C3 C1 H4 117.884 H5 C2 H7 107.064
H5 C2 H8 108.417 H6 C3 H9 107.064
H6 C3 H10 108.417 H7 C2 H8 107.242
H9 C3 H10 107.242
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.045      
2 C -0.224      
3 C -0.224      
4 H 0.055      
5 H 0.073      
6 H 0.073      
7 H 0.072      
8 H 0.074      
9 H 0.072      
10 H 0.074      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.162 -0.140 0.000 0.214
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.567 0.226 0.000
y 0.226 -19.123 0.000
z 0.000 0.000 -19.066
Traceless
 xyz
x -0.472 0.226 0.000
y 0.226 0.193 0.000
z 0.000 0.000 0.279
Polar
3z2-r20.558
x2-y2-0.444
xy0.226
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.909 0.090 0.000
y 0.090 2.457 0.000
z 0.000 0.000 2.941


<r2> (average value of r2) Å2
<r2> 62.245
(<r2>)1/2 7.890