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

using model chemistry: CISD/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 CISD/6-311G*
 hartrees
Energy at 0K-118.046152
Energy at 298.15K-118.052435
HF Energy-117.656857
Nuclear repulsion energy75.408731
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 CISD/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' 3245 3003 35.08      
2 A' 3180 2942 23.93      
3 A' 3127 2894 57.87      
4 A' 3055 2827 46.98      
5 A' 1561 1444 5.92      
6 A' 1551 1435 17.60      
7 A' 1486 1375 5.09      
8 A' 1231 1139 2.59      
9 A' 1085 1004 0.12      
10 A' 915 847 1.92      
11 A' 424 393 18.69      
12 A' 359 332 10.09      
13 A' 154 143 0.34      
14 A" 3181 2943 27.92      
15 A" 3126 2892 6.53      
16 A" 3051 2823 26.36      
17 A" 1550 1434 1.31      
18 A" 1538 1423 1.86      
19 A" 1488 1377 9.64      
20 A" 1426 1319 1.60      
21 A" 1188 1099 0.00      
22 A" 987 913 0.53      
23 A" 975 902 0.55      
24 A" 121 112 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20001.8 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 18507.6 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 CISD/6-311G*
ABC
1.24137 0.27815 0.24848

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 0.544 0.000
C2 -0.013 -0.200 1.297
C3 -0.013 -0.200 -1.297
H4 0.298 1.581 0.000
H5 -0.778 -0.981 1.304
H6 -0.778 -0.981 -1.304
H7 0.947 -0.701 1.478
H8 -0.198 0.461 2.143
H9 0.947 -0.701 -1.478
H10 -0.198 0.461 -2.143

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49521.49521.08302.14742.14742.15752.15212.15752.1521
C21.49522.59332.22561.09272.82111.09791.08972.97813.5072
C31.49522.59332.22562.82111.09272.97813.50721.09791.0897
H41.08302.22562.22563.06993.06992.79502.46812.79502.4681
H52.14741.09272.82113.06992.60851.75651.76603.28543.7811
H62.14742.82111.09273.06992.60853.28543.78111.75651.7660
H72.15751.09792.97812.79501.75653.28541.76172.95523.9708
H82.15211.08973.50722.46811.76603.78111.76173.97084.2852
H92.15752.97811.09792.79503.28541.75652.95523.97081.7617
H102.15213.50721.08972.46813.78111.76603.97084.28521.7617

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 111.201 C1 C2 H7 111.699
C1 C2 H8 111.768 C1 C3 H6 111.201
C1 C3 H9 111.699 C1 C3 H10 111.768
C2 C1 C3 120.272 C2 C1 H4 118.486
C3 C1 H4 118.486 H5 C2 H7 106.610
H5 C2 H8 108.028 H6 C3 H9 106.610
H6 C3 H10 108.028 H7 C2 H8 107.282
H9 C3 H10 107.282
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability