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

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-117.253595
Energy at 298.15K-117.259879
HF Energy-116.985556
Nuclear repulsion energy74.863270
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 CID/3-21G*
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' 3230 3006 25.82      
2 A' 3153 2933 17.93      
3 A' 3108 2892 43.79      
4 A' 3047 2835 31.80      
5 A' 1606 1494 5.41      
6 A' 1596 1485 13.74      
7 A' 1514 1409 5.08      
8 A' 1247 1160 5.13      
9 A' 1114 1037 0.89      
10 A' 868 808 1.25      
11 A' 422 393 15.88      
12 A' 359 334 11.87      
13 A' 145 135 0.19      
14 A" 3153 2934 22.86      
15 A" 3105 2890 4.53      
16 A" 3042 2830 15.96      
17 A" 1596 1485 1.82      
18 A" 1585 1475 0.56      
19 A" 1498 1394 5.19      
20 A" 1439 1339 7.67      
21 A" 1140 1060 0.24      
22 A" 1021 951 0.53      
23 A" 1003 933 1.09      
24 A" 132 122 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20060.1 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 18666.0 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 CID/3-21G*
ABC
1.21659 0.27410 0.24459

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.012 0.554 0.000
C2 -0.012 -0.205 1.308
C3 -0.012 -0.205 -1.308
H4 0.295 1.594 0.000
H5 -0.776 -0.992 1.295
H6 -0.776 -0.992 -1.295
H7 0.958 -0.693 1.491
H8 -0.217 0.459 2.153
H9 0.958 -0.693 -1.491
H10 -0.217 0.459 -2.153

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.51251.51251.08462.15652.15652.17162.16472.17162.1647
C21.51252.61662.24551.09642.82521.10071.09393.00203.5304
C31.51252.61662.24552.82521.09643.00203.53041.10071.0939
H41.08462.24552.24553.08423.08422.80852.48702.80852.4870
H52.15651.09642.82523.08422.59101.76981.77593.29493.7829
H62.15652.82521.09643.08422.59103.29493.78291.76981.7759
H72.17161.10073.00202.80851.76983.29491.77332.98123.9976
H82.16471.09393.53042.48701.77593.78291.77333.99764.3059
H92.17163.00201.10072.80853.29491.76982.98123.99761.7733
H102.16473.53041.09392.48703.78291.77593.99764.30591.7733

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 110.489 C1 C2 H7 111.431
C1 C2 H8 111.299 C1 C3 H6 110.489
C1 C3 H9 111.431 C1 C3 H10 111.299
C2 C1 C3 119.768 C2 C1 H4 118.760
C3 C1 H4 118.760 H5 C2 H7 107.317
H5 C2 H8 108.348 H6 C3 H9 107.317
H6 C3 H10 108.348 H7 C2 H8 107.802
H9 C3 H10 107.802
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability