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

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G
 hartrees
Energy at 0K-117.246163
Energy at 298.15K-117.252504
HF Energy-116.985458
Nuclear repulsion energy74.870921
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=FULL/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' 3224 3079 26.02      
2 A' 3149 3007 17.25      
3 A' 3103 2962 40.52      
4 A' 3033 2896 26.24      
5 A' 1602 1529 5.30      
6 A' 1590 1518 13.23      
7 A' 1503 1435 4.94      
8 A' 1240 1184 5.05      
9 A' 1112 1062 0.96      
10 A' 866 827 1.09      
11 A' 440 420 19.84      
12 A' 366 350 8.06      
13 A' 154 147 0.09      
14 A" 3149 3007 19.69      
15 A" 3101 2961 4.35      
16 A" 3032 2895 15.45      
17 A" 1592 1520 1.50      
18 A" 1579 1508 0.54      
19 A" 1487 1420 4.01      
20 A" 1436 1371 8.84      
21 A" 1140 1088 0.57      
22 A" 1014 969 0.81      
23 A" 997 951 1.01      
24 A" 141 134 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20024.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 19119.3 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=FULL/3-21G
ABC
1.21656 0.27433 0.24488

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.014 0.554 0.000
C2 -0.014 -0.205 1.307
C3 -0.014 -0.205 -1.307
H4 0.321 1.586 0.000
H5 -0.771 -0.999 1.289
H6 -0.771 -0.999 -1.289
H7 0.960 -0.686 1.496
H8 -0.228 0.458 2.152
H9 0.960 -0.686 -1.496
H10 -0.228 0.458 -2.152

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.51161.51161.08542.15552.15552.17312.16452.17312.1645
C21.51162.61472.24271.09732.81901.10201.09493.00653.5287
C31.51162.61472.24272.81901.09733.00653.52871.10201.0949
H41.08542.24272.24273.08823.08822.79452.49082.79452.4908
H52.15551.09732.81903.08822.57871.77101.77803.29453.7761
H62.15552.81901.09733.08822.57873.29453.77611.77101.7780
H72.17311.10203.00652.79451.77103.29451.77462.99254.0035
H82.16451.09493.52872.49081.77803.77611.77464.00354.3036
H92.17313.00651.10202.79453.29451.77102.99254.00351.7746
H102.16453.52871.09492.49083.77611.77804.00354.30361.7746

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 110.421 C1 C2 H7 111.543
C1 C2 H8 111.287 C1 C3 H6 110.421
C1 C3 H9 111.543 C1 C3 H10 111.287
C2 C1 C3 119.746 C2 C1 H4 118.522
C3 C1 H4 118.522 H5 C2 H7 107.273
H5 C2 H8 108.404 H6 C3 H9 107.273
H6 C3 H10 108.404 H7 C2 H8 107.755
H9 C3 H10 107.755
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability