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

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-117.285106
Energy at 298.15K-117.291363
HF Energy-116.984782
Nuclear repulsion energy74.564223
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 MP4/3-21G
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' 3167 3071        
2 A' 3087 2994        
3 A' 3039 2948        
4 A' 2973 2883        
5 A' 1577 1529        
6 A' 1566 1519        
7 A' 1481 1436        
8 A' 1220 1183        
9 A' 1093 1060        
10 A' 848 822        
11 A' 425 412        
12 A' 357 346        
13 A' 144 140        
14 A" 3087 2994        
15 A" 3038 2946        
16 A" 2970 2880        
17 A" 1567 1520        
18 A" 1555 1508        
19 A" 1465 1421        
20 A" 1412 1369        
21 A" 1115 1081        
22 A" 999 969        
23 A" 980 951        
24 A" 128 124        

Unscaled Zero Point Vibrational Energy (zpe) 19646.2 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 19052.9 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 MP4/3-21G
ABC
1.20582 0.27219 0.24290

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 0.556 0.000
C2 -0.013 -0.206 1.313
C3 -0.013 -0.206 -1.313
H4 0.310 1.597 0.000
H5 -0.773 -1.004 1.293
H6 -0.773 -1.004 -1.293
H7 0.965 -0.688 1.502
H8 -0.230 0.460 2.160
H9 0.965 -0.688 -1.502
H10 -0.230 0.460 -2.160

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.51771.51771.08982.16432.16432.18192.17342.18192.1734
C21.51772.62512.25321.10202.82941.10671.09943.01873.5428
C31.51772.62512.25322.82941.10203.01873.54281.10671.0994
H41.08982.25322.25323.10003.10002.81162.50042.81162.5004
H52.16431.10202.82943.10002.58691.77851.78563.30693.7903
H62.16432.82941.10203.10002.58693.30693.79031.77851.7856
H72.18191.10673.01872.81161.77853.30691.78243.00474.0199
H82.17341.09943.54282.50041.78563.79031.78244.01994.3208
H92.18193.01871.10672.81163.30691.77853.00474.01991.7824
H102.17343.54281.09942.50043.79031.78564.01994.32081.7824

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 110.404 C1 C2 H7 111.525
C1 C2 H8 111.289 C1 C3 H6 110.404
C1 C3 H9 111.525 C1 C3 H10 111.289
C2 C1 C3 119.731 C2 C1 H4 118.648
C3 C1 H4 118.648 H5 C2 H7 107.257
H5 C2 H8 108.417 H6 C3 H9 107.257
H6 C3 H10 108.417 H7 C2 H8 107.794
H9 C3 H10 107.794
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability