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: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-118.400929
Energy at 298.15K-118.407013
HF Energy-118.400929
Nuclear repulsion energy74.850828
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 BLYP/6-31G(2df,p)
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' 3091 3074 32.57      
2 A' 3009 2992 22.39      
3 A' 2950 2933 46.33      
4 A' 2854 2838 58.05      
5 A' 1453 1445 2.66      
6 A' 1442 1434 7.44      
7 A' 1374 1367 1.51      
8 A' 1146 1139 2.69      
9 A' 1007 1002 0.09      
10 A' 857 852 1.36      
11 A' 407 404 14.46      
12 A' 358 356 4.20      
13 A' 116 116 0.04      
14 A" 3009 2993 27.26      
15 A" 2948 2932 11.94      
16 A" 2848 2832 28.78      
17 A" 1442 1434 0.15      
18 A" 1431 1423 0.35      
19 A" 1361 1353 2.64      
20 A" 1333 1326 8.22      
21 A" 1120 1113 0.29      
22 A" 917 912 1.82      
23 A" 913 908 0.14      
24 A" 110 109 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 18746.0 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 18642.9 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 BLYP/6-31G(2df,p)
ABC
1.24378 0.27273 0.24429

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.011 0.533 0.000
C2 -0.011 -0.197 1.308
C3 -0.011 -0.197 -1.308
H4 0.224 1.601 0.000
H5 -0.708 -1.055 1.297
H6 -0.708 -1.055 -1.297
H7 0.987 -0.623 1.558
H8 -0.289 0.459 2.148
H9 0.987 -0.623 -1.558
H10 -0.289 0.459 -2.148

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49781.49781.09312.16552.16552.18152.16762.18152.1676
C21.49782.61552.23541.10532.82961.11331.10183.06403.5289
C31.49782.61552.23542.82961.10533.06403.52891.11331.1018
H41.09312.23542.23543.09873.09872.82002.48652.82002.4865
H52.16551.10532.82963.09872.59411.76831.78653.34793.7866
H62.16552.82961.10533.09872.59413.34793.78661.76831.7865
H72.18151.11333.06402.82001.76833.34791.77373.11544.0661
H82.16761.10183.52892.48651.78653.78661.77374.06614.2970
H92.18153.06401.11332.82003.34791.76833.11544.06611.7737
H102.16763.52891.10182.48653.78661.78654.06614.29701.7737

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 111.705 C1 C2 H7 112.492
C1 C2 H8 112.088 C1 C3 H6 111.705
C1 C3 H9 112.492 C1 C3 H10 112.088
C2 C1 C3 121.645 C2 C1 H4 118.431
C3 C1 H4 118.431 H5 C2 H7 105.695
H5 C2 H8 108.081 H6 C3 H9 105.695
H6 C3 H10 108.081 H7 C2 H8 106.395
H9 C3 H10 106.395
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.007      
2 C -0.351      
3 C -0.351      
4 H 0.070      
5 H 0.103      
6 H 0.103      
7 H 0.105      
8 H 0.105      
9 H 0.105      
10 H 0.105      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.148 -0.114 0.000 0.186
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.254 0.250 0.000
y 0.250 -20.439 0.000
z 0.000 0.000 -20.443
Traceless
 xyz
x -0.814 0.250 0.000
y 0.250 0.410 0.000
z 0.000 0.000 0.403
Polar
3z2-r20.807
x2-y2-0.816
xy0.250
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.221 0.038 0.000
y 0.038 5.080 0.000
z 0.000 0.000 6.138


<r2> (average value of r2) Å2
<r2> 62.234
(<r2>)1/2 7.889