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

using model chemistry: ROMP2/TZVP

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/TZVP
 hartrees
Energy at 0K-118.109518
Energy at 298.15K-118.115734
HF Energy-117.671825
Nuclear repulsion energy75.661659
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/TZVP
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' 3245 3245        
2 A' 3171 3171        
3 A' 3112 3112        
4 A' 3030 3030        
5 A' 1518 1518        
6 A' 1500 1500        
7 A' 1439 1439        
8 A' 1204 1204        
9 A' 1059 1059        
10 A' 906 906        
11 A' 425 425        
12 A' 362 362        
13 A' 159 159        
14 A" 3172 3172        
15 A" 3113 3113        
16 A" 3029 3029        
17 A" 1506 1506        
18 A" 1488 1488        
19 A" 1442 1442        
20 A" 1393 1393        
21 A" 1175 1175        
22 A" 954 954        
23 A" 952 952        
24 A" 88 88        

Unscaled Zero Point Vibrational Energy (zpe) 19720.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19720.2 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 ROMP2/TZVP
ABC
1.24153 0.28141 0.25108

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/TZVP

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 1.288
C3 -0.013 -0.200 -1.288
H4 0.296 1.581 0.000
H5 -0.768 -0.990 1.284
H6 -0.768 -0.990 -1.284
H7 0.953 -0.689 1.471
H8 -0.212 0.455 2.137
H9 0.953 -0.689 -1.471
H10 -0.212 0.455 -2.137

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.48831.48831.08142.13882.13882.14972.14772.14972.1477
C21.48832.57702.22001.09272.79481.09821.08952.96473.4927
C31.48832.57702.22002.79481.09272.96473.49271.09821.0895
H41.08142.22002.22003.06473.06472.78412.46812.78412.4681
H52.13881.09272.79483.06472.56781.75681.76763.26233.7546
H62.13882.79481.09273.06472.56783.26233.75461.75681.7676
H72.14971.09822.96472.78411.75683.26231.76262.94283.9600
H82.14771.08953.49272.46811.76763.75461.76263.96004.2732
H92.14972.96471.09822.78413.26231.75682.94283.96001.7626
H102.14773.49271.08952.46813.75461.76763.96004.27321.7626

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 111.001 C1 C2 H7 111.536
C1 C2 H8 111.912 C1 C3 H6 111.001
C1 C3 H9 111.536 C1 C3 H10 111.912
C2 C1 C3 119.932 C2 C1 H4 118.662
C3 C1 H4 118.662 H5 C2 H7 106.616
H5 C2 H8 108.191 H6 C3 H9 106.616
H6 C3 H10 108.191 H7 C2 H8 107.343
H9 C3 H10 107.343
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.122      
2 C -0.230      
3 C -0.230      
4 H 0.100      
5 H 0.077      
6 H 0.077      
7 H 0.076      
8 H 0.088      
9 H 0.076      
10 H 0.088      


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> 61.196
(<r2>)1/2 7.823