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

using model chemistry: ROMP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at ROMP2/6-31+G**
 hartrees
Energy at 0K-118.067384
Energy at 298.15K-118.073650
HF Energy-117.644616
Nuclear repulsion energy75.581464
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 ROMP2/6-31+G**
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' 3277 3277        
2 A' 3209 3209        
3 A' 3149 3149        
4 A' 3065 3065        
5 A' 1540 1540        
6 A' 1525 1525        
7 A' 1460 1460        
8 A' 1216 1216        
9 A' 1068 1068        
10 A' 916 916        
11 A' 424 424        
12 A' 360 360        
13 A' 159 159        
14 A" 3210 3210        
15 A" 3151 3151        
16 A" 3064 3064        
17 A" 1529 1529        
18 A" 1515 1515        
19 A" 1465 1465        
20 A" 1410 1410        
21 A" 1189 1189        
22 A" 966 966        
23 A" 961 961        
24 A" 117 117        

Unscaled Zero Point Vibrational Energy (zpe) 19972.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19972.0 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 ROMP2/6-31+G**
ABC
1.24040 0.28044 0.25024

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 0.545 0.000
C2 -0.013 -0.200 1.291
C3 -0.013 -0.200 -1.291
H4 0.293 1.583 0.000
H5 -0.774 -0.985 1.289
H6 -0.774 -0.985 -1.289
H7 0.949 -0.697 1.471
H8 -0.204 0.457 2.138
H9 0.949 -0.697 -1.471
H10 -0.204 0.457 -2.138

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49111.49111.08172.13992.13992.15262.14872.15262.1487
C21.49112.58252.22281.09232.80161.09771.08932.96733.4973
C31.49112.58252.22282.80161.09232.96733.49731.09771.0893
H41.08172.22282.22283.06423.06422.79132.46712.79132.4671
H52.13991.09232.80163.06422.57721.75621.76773.26633.7612
H62.13992.80161.09233.06422.57723.26633.76121.75621.7677
H72.15261.09772.96732.79131.75623.26631.76262.94283.9613
H82.14871.08933.49732.46711.76773.76121.76263.96134.2767
H92.15262.96731.09772.79133.26631.75622.94283.96131.7626
H102.14873.49731.08932.46713.76121.76773.96134.27671.7626

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 110.911 C1 C2 H7 111.607
C1 C2 H8 111.811 C1 C3 H6 110.911
C1 C3 H9 111.607 C1 C3 H10 111.811
C2 C1 C3 119.988 C2 C1 H4 118.661
C3 C1 H4 118.661 H5 C2 H7 106.630
H5 C2 H8 108.245 H6 C3 H9 106.630
H6 C3 H10 108.245 H7 C2 H8 107.406
H9 C3 H10 107.406
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.017      
2 C -0.450      
3 C -0.450      
4 H 0.133      
5 H 0.129      
6 H 0.129      
7 H 0.129      
8 H 0.134      
9 H 0.129      
10 H 0.134      


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> 61.393
(<r2>)1/2 7.835