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: CCD/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at CCD/6-311G**
 hartrees
Energy at 0K-118.145811
Energy at 298.15K-118.152055
HF Energy-117.667144
Nuclear repulsion energy75.161998
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 CCD/6-311G**
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' 3204 3060 30.06      
2 A' 3135 2995 23.03      
3 A' 3083 2945 52.25      
4 A' 3009 2874 39.59      
5 A' 1518 1450 4.10      
6 A' 1508 1440 12.65      
7 A' 1442 1377 3.45      
8 A' 1200 1146 1.72      
9 A' 1062 1014 0.30      
10 A' 900 860 1.53      
11 A' 427 407 18.40      
12 A' 357 341 5.38      
13 A' 154 147 0.16      
14 A" 3136 2995 23.70      
15 A" 3083 2944 5.61      
16 A" 3006 2871 26.21      
17 A" 1508 1441 0.53      
18 A" 1497 1430 1.45      
19 A" 1447 1382 7.09      
20 A" 1390 1327 3.09      
21 A" 1168 1116 0.00      
22 A" 957 914 0.48      
23 A" 950 907 0.31      
24 A" 111 106 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19624.6 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 18743.4 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 CCD/6-311G**
ABC
1.22926 0.27691 0.24731

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.014 0.547 0.000
C2 -0.014 -0.202 1.300
C3 -0.014 -0.202 -1.300
H4 0.315 1.583 0.000
H5 -0.769 -0.999 1.293
H6 -0.769 -0.999 -1.293
H7 0.959 -0.685 1.487
H8 -0.221 0.459 2.148
H9 0.959 -0.685 -1.487
H10 -0.221 0.459 -2.148

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.50001.50001.08712.15232.15232.16322.15932.16322.1593
C21.50002.59922.23251.09762.81561.10301.09482.99153.5161
C31.50002.59922.23252.81561.09762.99153.51611.10301.0948
H41.08712.23252.23253.08473.08472.78832.48262.78832.4826
H52.15231.09762.81563.08472.58641.76661.77663.28863.7770
H62.15232.81561.09763.08472.58643.28863.77701.76661.7766
H72.16321.10302.99152.78831.76663.28861.77162.97483.9895
H82.15931.09483.51612.48261.77663.77701.77163.98954.2952
H92.16322.99151.10302.78833.28861.76662.97483.98951.7716
H102.15933.51611.09482.48263.77701.77663.98954.29521.7716

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 110.956 C1 C2 H7 111.502
C1 C2 H8 111.691 C1 C3 H6 110.956
C1 C3 H9 111.502 C1 C3 H10 111.691
C2 C1 C3 120.086 C2 C1 H4 118.417
C3 C1 H4 118.417 H5 C2 H7 106.791
H5 C2 H8 108.256 H6 C3 H9 106.791
H6 C3 H10 108.256 H7 C2 H8 107.428
H9 C3 H10 107.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability