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

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G*
 hartrees
Energy at 0K-117.246164
Energy at 298.15K-117.252498
HF Energy-116.985459
Nuclear repulsion energy74.871816
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 MP2=FULL/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' 3224 3057 26.08      
2 A' 3149 2986 17.15      
3 A' 3103 2941 40.51      
4 A' 3034 2876 26.26      
5 A' 1602 1518 5.27      
6 A' 1590 1508 13.26      
7 A' 1503 1424 4.96      
8 A' 1240 1176 5.05      
9 A' 1112 1054 0.96      
10 A' 866 821 1.09      
11 A' 441 418 20.02      
12 A' 366 347 7.84      
13 A' 155 147 0.09      
14 A" 3150 2986 19.74      
15 A" 3102 2940 4.36      
16 A" 3032 2874 15.36      
17 A" 1592 1509 1.51      
18 A" 1579 1497 0.54      
19 A" 1487 1410 4.02      
20 A" 1436 1361 8.83      
21 A" 1139 1080 0.57      
22 A" 1014 962 0.80      
23 A" 996 945 1.00      
24 A" 141 134 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20025.5 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 18984.1 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 MP2=FULL/3-21G*
ABC
1.21602 0.27439 0.24492

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.014 0.554 0.000
C2 -0.014 -0.205 1.307
C3 -0.014 -0.205 -1.307
H4 0.324 1.586 0.000
H5 -0.773 -0.997 1.290
H6 -0.773 -0.997 -1.290
H7 0.959 -0.688 1.494
H8 -0.225 0.459 2.152
H9 0.959 -0.688 -1.494
H10 -0.225 0.459 -2.152

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.51161.51161.08542.15562.15562.17302.16472.17302.1647
C21.51162.61442.24271.09732.81961.10201.09493.00443.5288
C31.51162.61442.24272.81961.09733.00443.52881.10201.0949
H41.08542.24272.24273.08823.08822.79442.49072.79442.4907
H52.15561.09732.81963.08822.58041.77101.77803.29343.7774
H62.15562.81961.09733.08822.58043.29343.77741.77101.7780
H72.17301.10203.00442.79441.77103.29341.77462.98814.0014
H82.16471.09493.52882.49071.77803.77741.77464.00144.3045
H92.17303.00441.10202.79443.29341.77102.98814.00141.7746
H102.16473.52881.09492.49073.77741.77804.00144.30451.7746

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 110.421 C1 C2 H7 111.528
C1 C2 H8 111.293 C1 C3 H6 110.421
C1 C3 H9 111.528 C1 C3 H10 111.293
C2 C1 C3 119.710 C2 C1 H4 118.512
C3 C1 H4 118.512 H5 C2 H7 107.274
H5 C2 H8 108.406 H6 C3 H9 107.274
H6 C3 H10 108.406 H7 C2 H8 107.762
H9 C3 H10 107.762
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability