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

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-118.041460
Energy at 298.15K-118.047769
HF Energy-117.635675
Nuclear repulsion energy75.306333
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 MP3/6-31G*
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' 3240 3041 28.84      
2 A' 3174 2979 20.16      
3 A' 3123 2931 47.62      
4 A' 3048 2861 32.91      
5 A' 1557 1462 4.62      
6 A' 1545 1450 13.43      
7 A' 1479 1388 3.66      
8 A' 1226 1150 2.91      
9 A' 1085 1019 0.12      
10 A' 916 860 1.70      
11 A' 443 416 19.71      
12 A' 366 343 5.87      
13 A' 157 147 0.13      
14 A" 3175 2980 21.44      
15 A" 3122 2930 4.63      
16 A" 3046 2859 22.39      
17 A" 1548 1453 1.00      
18 A" 1534 1440 1.35      
19 A" 1481 1390 8.15      
20 A" 1424 1337 2.12      
21 A" 1193 1120 0.00      
22 A" 983 922 0.69      
23 A" 970 910 0.67      
24 A" 132 124 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19982.5 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 18755.5 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 MP3/6-31G*
ABC
1.23717 0.27781 0.24827

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.014 0.544 0.000
C2 -0.014 -0.200 1.297
C3 -0.014 -0.200 -1.297
H4 0.310 1.581 0.000
H5 -0.766 -0.998 1.291
H6 -0.766 -0.998 -1.291
H7 0.958 -0.682 1.493
H8 -0.225 0.462 2.142
H9 0.958 -0.682 -1.493
H10 -0.225 0.462 -2.142

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49541.49541.08662.14742.14742.16202.15382.16202.1538
C21.49542.59422.22721.09672.81121.10181.09402.99303.5085
C31.49542.59422.22722.81121.09672.99303.50851.10181.0940
H41.08662.22722.22723.07863.07862.78722.47522.78722.4752
H52.14741.09672.81123.07862.58281.76421.77393.28983.7697
H62.14742.81121.09673.07862.58283.28983.76971.76421.7739
H72.16201.10182.99302.78721.76423.28981.76912.98523.9896
H82.15381.09403.50852.47521.77393.76971.76913.98964.2836
H92.16202.99301.10182.78723.28981.76422.98523.98961.7691
H102.15383.50851.09402.47523.76971.77393.98964.28361.7691

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 110.945 C1 C2 H7 111.803
C1 C2 H8 111.629 C1 C3 H6 110.945
C1 C3 H9 111.803 C1 C3 H10 111.629
C2 C1 C3 120.317 C2 C1 H4 118.360
C3 C1 H4 118.360 H5 C2 H7 106.733
H5 C2 H8 108.146 H6 C3 H9 106.733
H6 C3 H10 108.146 H7 C2 H8 107.354
H9 C3 H10 107.354
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability