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: PBEPBEultrafine/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at PBEPBEultrafine/6-311+G(3df,2p)
 hartrees
Energy at 0K-118.337062
Energy at 298.15K-118.343058
HF Energy-118.337062
Nuclear repulsion energy75.335533
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 PBEPBEultrafine/6-311+G(3df,2p)
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' 3106 3106 22.27      
2 A' 3029 3029 12.43      
3 A' 2939 2939 45.70      
4 A' 2873 2873 52.38      
5 A' 1439 1439 5.81      
6 A' 1422 1422 15.09      
7 A' 1355 1355 5.15      
8 A' 1139 1139 2.21      
9 A' 982 982 0.05      
10 A' 877 877 2.33      
11 A' 373 373 8.14      
12 A' 338 338 19.04      
13 A' 93 93 1.82      
14 A" 3030 3030 25.70      
15 A" 2939 2939 7.12      
16 A" 2868 2868 27.55      
17 A" 1422 1422 1.16      
18 A" 1412 1412 0.59      
19 A" 1357 1357 9.74      
20 A" 1319 1319 1.04      
21 A" 1130 1130 0.43      
22 A" 909 909 0.68      
23 A" 903 903 0.14      
24 A" 114 114 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 18683.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18683.6 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 PBEPBEultrafine/6-311+G(3df,2p)
ABC
1.24081 0.27893 0.24888

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.008 0.536 0.000
C2 -0.008 -0.197 1.293
C3 -0.008 -0.197 -1.293
H4 0.160 1.614 0.000
H5 -0.787 -0.979 1.317
H6 -0.787 -0.979 -1.317
H7 0.950 -0.728 1.471
H8 -0.169 0.470 2.151
H9 0.950 -0.728 -1.471
H10 -0.169 0.470 -2.151

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.48621.48621.09072.15362.15362.16342.15762.16342.1576
C21.48622.58562.23121.10432.83381.10971.09802.97323.5109
C31.48622.58562.23122.83381.10432.97323.51091.10971.0980
H41.09072.23122.23123.05863.05862.87632.45812.87632.4581
H52.15361.10432.83383.05862.63421.76191.78203.29483.8086
H62.15362.83381.10433.05862.63423.29483.80861.76191.7820
H72.16341.10972.97322.87631.76193.29481.77372.94273.9753
H82.15761.09803.51092.45811.78203.80861.77373.97534.3011
H92.16342.97321.10972.87633.29481.76192.94273.97531.7737
H102.15763.51091.09802.45813.80861.78203.97534.30111.7737

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 111.626 C1 C2 H7 112.087
C1 C2 H8 112.348 C1 C3 H6 111.626
C1 C3 H9 112.087 C1 C3 H10 112.348
C2 C1 C3 120.888 C2 C1 H4 119.170
C3 C1 H4 119.170 H5 C2 H7 105.457
H5 C2 H8 108.028 H6 C3 H9 105.457
H6 C3 H10 108.028 H7 C2 H8 106.914
H9 C3 H10 106.914
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.240      
2 C -0.301      
3 C -0.301      
4 H 0.109      
5 H 0.126      
6 H 0.126      
7 H 0.129      
8 H 0.112      
9 H 0.129      
10 H 0.112      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.140 -0.160 0.000 0.213
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.030 0.274 0.000
y 0.274 -21.000 0.000
z 0.000 0.000 -20.884
Traceless
 xyz
x -1.088 0.274 0.000
y 0.274 0.457 0.000
z 0.000 0.000 0.631
Polar
3z2-r21.263
x2-y2-1.030
xy0.274
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.503 -0.073 0.000
y -0.073 6.101 0.000
z 0.000 0.000 7.193


<r2> (average value of r2) Å2
<r2> 61.751
(<r2>)1/2 7.858