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

using model chemistry: ROMP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at ROMP2/3-21G
 hartrees
Energy at 0K-117.240798
Energy at 298.15K-117.247130
HF Energy-116.981691
Nuclear repulsion energy74.866854
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 ROMP2/3-21G
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 3224        
2 A' 3149 3149        
3 A' 3103 3103        
4 A' 3035 3035        
5 A' 1601 1601        
6 A' 1590 1590        
7 A' 1502 1502        
8 A' 1240 1240        
9 A' 1111 1111        
10 A' 866 866        
11 A' 443 443        
12 A' 366 366        
13 A' 154 154        
14 A" 3149 3149        
15 A" 3102 3102        
16 A" 3034 3034        
17 A" 1591 1591        
18 A" 1579 1579        
19 A" 1486 1486        
20 A" 1437 1437        
21 A" 1140 1140        
22 A" 1012 1012        
23 A" 995 995        
24 A" 135 135        

Unscaled Zero Point Vibrational Energy (zpe) 20020.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20020.6 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 ROMP2/3-21G
ABC
1.21610 0.27433 0.24490

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/3-21G

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 0.331 1.584 0.000
H5 -0.774 -0.997 1.291
H6 -0.774 -0.997 -1.291
H7 0.959 -0.688 1.494
H8 -0.225 0.459 2.152
H9 0.959 -0.688 -1.494
H10 -0.225 0.459 -2.152

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.51171.51171.08552.15592.15592.17322.16472.17322.1647
C21.51172.61462.24191.09742.82001.10211.09513.00483.5290
C31.51172.61462.24192.82001.09743.00483.52901.10211.0951
H41.08552.24192.24193.08913.08912.79062.49122.79062.4912
H52.15591.09742.82003.08912.58111.77131.77833.29413.7779
H62.15592.82001.09743.08912.58113.29413.77791.77131.7783
H72.17321.10213.00482.79061.77133.29411.77482.98874.0018
H82.16471.09513.52902.49121.77833.77791.77484.00184.3046
H92.17323.00481.10212.79063.29411.77132.98874.00181.7748
H102.16473.52901.09512.49123.77791.77834.00184.30461.7748

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 110.435 C1 C2 H7 111.530
C1 C2 H8 111.278 C1 C3 H6 110.435
C1 C3 H9 111.530 C1 C3 H10 111.278
C2 C1 C3 119.711 C2 C1 H4 118.435
C3 C1 H4 118.435 H5 C2 H7 107.284
H5 C2 H8 108.405 H6 C3 H9 107.284
H6 C3 H10 108.405 H7 C2 H8 107.754
H9 C3 H10 107.754
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.189      
2 C -0.621      
3 C -0.621      
4 H 0.203      
5 H 0.205      
6 H 0.205      
7 H 0.202      
8 H 0.207      
9 H 0.202      
10 H 0.207      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 62.272
(<r2>)1/2 7.891