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

using model chemistry: CISD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-118.006110
Energy at 298.15K-118.012429
HF Energy-117.635881
Nuclear repulsion energy75.417086
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/6-31G*
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' 3268 3026 31.87      
2 A' 3202 2964 22.97      
3 A' 3152 2918 52.76      
4 A' 3079 2851 39.15      
5 A' 1578 1461 4.14      
6 A' 1566 1450 12.51      
7 A' 1502 1390 3.28      
8 A' 1242 1150 2.71      
9 A' 1098 1017 0.10      
10 A' 923 854 1.66      
11 A' 442 410 18.32      
12 A' 366 339 6.40      
13 A' 156 144 0.16      
14 A" 3202 2965 24.96      
15 A" 3150 2916 5.82      
16 A" 3074 2846 24.07      
17 A" 1568 1452 0.89      
18 A" 1556 1440 1.23      
19 A" 1503 1391 6.86      
20 A" 1442 1335 2.94      
21 A" 1201 1111 0.02      
22 A" 997 923 0.55      
23 A" 983 910 0.59      
24 A" 129 120 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20189.1 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 18691.0 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 CISD/6-31G*
ABC
1.24262 0.27825 0.24871

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.013 0.543 0.000
C2 0.013 -0.200 1.296
C3 0.013 -0.200 -1.296
H4 -0.308 1.578 0.000
H5 -0.954 -0.684 1.489
H6 -0.954 -0.684 -1.489
H7 0.767 -0.993 1.294
H8 0.220 0.461 2.139
H9 0.767 -0.993 -1.294
H10 0.220 0.461 -2.139

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49411.49411.08372.15842.15842.14542.15082.14542.1508
C21.49412.59252.22361.09882.98821.09371.09112.81223.5047
C31.49412.59252.22362.98821.09882.81223.50471.09371.0911
H41.08372.22362.22362.78372.78373.07252.47033.07252.4703
H52.15841.09882.98822.78372.97871.75921.76393.28743.9819
H62.15842.98821.09882.78372.97873.28743.98191.75921.7639
H72.14541.09372.81223.07251.75923.28741.76852.58903.7689
H82.15081.09113.50472.47031.76393.98191.76853.76894.2786
H92.14542.81221.09373.07253.28741.75922.58903.76891.7685
H102.15083.50471.09112.47033.98191.76393.76894.27861.7685

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 111.795 C1 C2 H7 111.052
C1 C2 H8 111.654 C1 C3 H6 111.795
C1 C3 H9 111.052 C1 C3 H10 111.654
C2 C1 C3 120.359 C2 C1 H4 118.352
C3 C1 H4 118.352 H5 C2 H7 106.714
H5 C2 H8 107.309 H6 C3 H9 106.714
H6 C3 H10 107.309 H7 C2 H8 108.079
H9 C3 H10 108.079
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability