return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: QCISD(T)=FULL/Def2TZVPP

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(T)=FULL/Def2TZVPP
 hartrees
Energy at 0K-118.307475
Energy at 298.15K-118.313606
HF Energy-117.682769
Nuclear repulsion energy75.557886
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(T)=FULL/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3190 3190        
2 A' 3109 3109        
3 A' 3044 3044        
4 A' 2971 2971        
5 A' 1496 1496        
6 A' 1488 1488        
7 A' 1417 1417        
8 A' 1184 1184        
9 A' 1037 1037        
10 A' 893 893        
11 A' 397 397        
12 A' 342 342        
13 A' 135 135        
14 A" 3110 3110        
15 A" 3044 3044        
16 A" 2968 2968        
17 A" 1485 1485        
18 A" 1477 1477        
19 A" 1424 1424        
20 A" 1374 1374        
21 A" 1157 1157        
22 A" 948 948        
23 A" 935 935        
24 A" 104 104        

Unscaled Zero Point Vibrational Energy (zpe) 19364.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19364.1 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 QCISD(T)=FULL/Def2TZVPP
ABC
1.24037 0.28020 0.24987

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.011 0.544 0.000
C2 -0.011 -0.200 1.292
C3 -0.011 -0.200 -1.292
H4 0.246 1.593 0.000
H5 -0.774 -0.984 1.293
H6 -0.774 -0.984 -1.293
H7 0.949 -0.702 1.469
H8 -0.196 0.459 2.139
H9 0.949 -0.702 -1.469
H10 -0.196 0.459 -2.139

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49131.49131.08042.14162.14162.15272.14892.15272.1489
C21.49132.58442.22571.09302.80661.09821.08892.96653.4990
C31.49132.58442.22572.80661.09302.96653.49901.09821.0889
H41.08042.22572.22573.05823.05822.81442.46162.81442.4616
H52.14161.09302.80663.05822.58571.75501.76923.26773.7674
H62.14162.80661.09303.05822.58573.26773.76741.75501.7692
H72.15271.09822.96652.81441.75503.26771.76262.93843.9596
H82.14891.08893.49902.46161.76923.76741.76263.95964.2785
H92.15272.96651.09822.81443.26771.75502.93843.95961.7626
H102.14893.49901.08892.46163.76741.76923.95964.27851.7626

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 110.996 C1 C2 H7 111.565
C1 C2 H8 111.836 C1 C3 H6 110.996
C1 C3 H9 111.565 C1 C3 H10 111.836
C2 C1 C3 120.103 C2 C1 H4 119.001
C3 C1 H4 119.001 H5 C2 H7 106.438
H5 C2 H8 108.367 H6 C3 H9 106.438
H6 C3 H10 108.367 H7 C2 H8 107.400
H9 C3 H10 107.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability