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: MP4=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at MP4=FULL/cc-pVTZ
 hartrees
Energy at 0K-118.293482
Energy at 298.15K-118.299685
HF Energy-117.679644
Nuclear repulsion energy75.768015
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 MP4=FULL/cc-pVTZ
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' 3221 3101        
2 A' 3118 3002        
3 A' 3062 2948        
4 A' 2989 2878        
5 A' 1509 1453        
6 A' 1501 1446        
7 A' 1419 1367        
8 A' 1191 1147        
9 A' 1043 1004        
10 A' 901 867        
11 A' 422 406        
12 A' 359 345        
13 A' 139 134        
14 A" 3118 3002        
15 A" 3062 2948        
16 A" 2987 2876        
17 A" 1499 1443        
18 A" 1490 1435        
19 A" 1429 1376        
20 A" 1378 1327        
21 A" 1166 1123        
22 A" 947 912        
23 A" 940 905        
24 A" 107 103        

Unscaled Zero Point Vibrational Energy (zpe) 19497.6 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 18774.2 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 MP4=FULL/cc-pVTZ
ABC
1.24619 0.28201 0.25156

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVTZ

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 1.287
C3 -0.013 -0.200 -1.287
H4 0.273 1.582 0.000
H5 -0.747 -1.006 1.272
H6 -0.747 -1.006 -1.272
H7 0.960 -0.667 1.483
H8 -0.235 0.448 2.132
H9 0.960 -0.667 -1.483
H10 -0.235 0.448 -2.132

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.48661.48661.07652.13552.13552.14792.14552.14792.1455
C21.48662.57472.21641.09092.78211.09671.08742.97353.4871
C31.48662.57472.21642.78211.09092.97353.48711.09671.0874
H41.07652.21642.21643.05883.05882.78062.46722.78062.4672
H52.13551.09092.78213.05882.54401.75261.76553.25873.7368
H62.13552.78211.09093.05882.54403.25873.73681.75261.7655
H72.14791.09672.97352.78061.75263.25871.75882.96683.9677
H82.14551.08743.48712.46721.76553.73681.75883.96774.2635
H92.14792.97351.09672.78063.25871.75262.96683.96771.7588
H102.14553.48711.08742.46723.73681.76553.96774.26351.7588

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 110.958 C1 C2 H7 111.601
C1 C2 H8 111.986 C1 C3 H6 110.958
C1 C3 H9 111.601 C1 C3 H10 111.986
C2 C1 C3 119.982 C2 C1 H4 118.831
C3 C1 H4 118.831 H5 C2 H7 106.483
H5 C2 H8 108.293 H6 C3 H9 106.483
H6 C3 H10 108.293 H7 C2 H8 107.269
H9 C3 H10 107.269
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability