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

using model chemistry: QCISD/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 QCISD/6-311G*
 hartrees
Energy at 0K-118.096525
Energy at 298.15K-118.102735
HF Energy-117.656327
Nuclear repulsion energy75.139539
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 QCISD/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' 3172 3037 33.39      
2 A' 3108 2975 21.99      
3 A' 3050 2920 55.88      
4 A' 2975 2849 47.26      
5 A' 1527 1462 5.64      
6 A' 1514 1450 17.28      
7 A' 1452 1390 5.21      
8 A' 1204 1153 2.43      
9 A' 1060 1015 0.11      
10 A' 900 862 1.91      
11 A' 409 391 16.84      
12 A' 351 336 12.25      
13 A' 147 140 0.47      
14 A" 3108 2976 27.55      
15 A" 3049 2919 6.41      
16 A" 2972 2845 24.77      
17 A" 1515 1451 1.38      
18 A" 1502 1438 1.73      
19 A" 1453 1391 9.84      
20 A" 1396 1337 1.32      
21 A" 1168 1118 0.01      
22 A" 965 924 0.68      
23 A" 954 913 0.41      
24 A" 116 111 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19532.6 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 18700.5 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 QCISD/6-311G*
ABC
1.23089 0.27670 0.24708

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 0.545 0.000
C2 -0.013 -0.201 1.300
C3 -0.013 -0.201 -1.300
H4 0.279 1.594 0.000
H5 -0.783 -0.985 1.308
H6 -0.783 -0.985 -1.308
H7 0.952 -0.707 1.481
H8 -0.196 0.465 2.150
H9 0.952 -0.707 -1.481
H10 -0.196 0.465 -2.150

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49841.49841.08902.15472.15472.16612.15972.16612.1597
C21.49842.59932.23521.09912.82941.10451.09562.98653.5185
C31.49842.59932.23522.82941.09912.98653.51851.10451.0956
H41.08902.23522.23523.08013.08012.81862.47482.81862.4748
H52.15471.09912.82943.08012.61521.76541.77663.29593.7952
H62.15472.82941.09913.08012.61523.29593.79521.76541.7766
H72.16611.10452.98652.81861.76543.29591.77192.96213.9848
H82.15971.09563.51852.47481.77663.79521.77193.98484.3008
H92.16612.98651.10452.81863.29591.76542.96213.98481.7719
H102.15973.51851.09562.47483.79521.77663.98484.30081.7719

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 111.171 C1 C2 H7 111.761
C1 C2 H8 111.786 C1 C3 H6 111.171
C1 C3 H9 111.761 C1 C3 H10 111.786
C2 C1 C3 120.312 C2 C1 H4 118.653
C3 C1 H4 118.653 H5 C2 H7 106.485
H5 C2 H8 108.095 H6 C3 H9 106.485
H6 C3 H10 108.095 H7 C2 H8 107.286
H9 C3 H10 107.286
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability