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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-118.121502
Energy at 298.15K-118.127778
HF Energy-117.652568
Nuclear repulsion energy75.562112
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 MP2/6-31G(2df,p)
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' 3263 3082 18.02      
2 A' 3195 3018 12.73      
3 A' 3140 2966 29.72      
4 A' 3057 2888 20.01      
5 A' 1526 1441 4.09      
6 A' 1517 1432 12.44      
7 A' 1436 1357 3.89      
8 A' 1199 1133 3.36      
9 A' 1054 996 0.14      
10 A' 908 858 1.63      
11 A' 437 413 18.09      
12 A' 356 337 5.05      
13 A' 155 147 0.05      
14 A" 3196 3018 12.75      
15 A" 3141 2967 3.52      
16 A" 3056 2886 19.22      
17 A" 1515 1431 0.45      
18 A" 1504 1421 1.00      
19 A" 1438 1358 8.52      
20 A" 1388 1311 2.65      
21 A" 1178 1112 0.06      
22 A" 953 900 1.03      
23 A" 946 894 0.43      
24 A" 128 121 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19843.6 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 18742.2 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 MP2/6-31G(2df,p)
ABC
1.23886 0.28051 0.25028

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.014 0.547 0.000
C2 -0.014 -0.200 1.290
C3 -0.014 -0.200 -1.290
H4 0.317 1.577 0.000
H5 -0.761 -0.999 1.283
H6 -0.761 -0.999 -1.283
H7 0.954 -0.681 1.481
H8 -0.222 0.452 2.139
H9 0.954 -0.681 -1.481
H10 -0.222 0.452 -2.139

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49091.49091.08222.14302.14302.15462.15152.15462.1515
C21.49092.58052.22111.09312.79591.09861.09052.97533.4972
C31.49092.58052.22112.79591.09312.97533.49721.09861.0905
H41.08222.22112.22113.07293.07292.77532.47652.77532.4765
H52.14301.09312.79593.07292.56621.75561.76853.26883.7560
H62.14302.79591.09313.07292.56623.26883.75601.75561.7685
H72.15461.09862.97532.77531.75563.26881.76122.96283.9722
H82.15151.09053.49722.47651.76853.75601.76123.97224.2787
H92.15462.97531.09862.77533.26881.75562.96283.97221.7612
H102.15153.49721.09052.47653.75601.76853.97224.27871.7612

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 111.124 C1 C2 H7 111.721
C1 C2 H8 111.977 C1 C3 H6 111.124
C1 C3 H9 111.721 C1 C3 H10 111.977
C2 C1 C3 119.860 C2 C1 H4 118.490
C3 C1 H4 118.490 H5 C2 H7 106.454
H5 C2 H8 108.174 H6 C3 H9 106.454
H6 C3 H10 108.174 H7 C2 H8 107.124
H9 C3 H10 107.124
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability