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

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-117.834971
Energy at 298.15K-117.841127
HF Energy-117.834971
Nuclear repulsion energy75.099829
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 B3LYP/3-21G
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' 3186 3075 25.71      
2 A' 3102 2993 15.61      
3 A' 3040 2933 43.88      
4 A' 2963 2859 44.61      
5 A' 1562 1507 5.51      
6 A' 1550 1496 15.76      
7 A' 1468 1416 5.83      
8 A' 1213 1170 6.85      
9 A' 1070 1033 2.31      
10 A' 869 838 1.61      
11 A' 395 381 9.45      
12 A' 347 335 22.41      
13 A' 117 113 0.56      
14 A" 3103 2994 26.42      
15 A" 3037 2931 6.56      
16 A" 2958 2854 16.96      
17 A" 1548 1494 2.01      
18 A" 1537 1483 0.65      
19 A" 1451 1400 4.50      
20 A" 1396 1347 8.28      
21 A" 1133 1093 0.80      
22 A" 987 952 1.51      
23 A" 978 944 0.49      
24 A" 120 115 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 19563.5 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 18876.8 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 B3LYP/3-21G
ABC
1.22825 0.27646 0.24666

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.010 0.545 0.000
C2 -0.010 -0.202 1.301
C3 -0.010 -0.202 -1.301
H4 0.224 1.605 0.000
H5 -0.763 -1.003 1.295
H6 -0.763 -1.003 -1.295
H7 0.964 -0.687 1.493
H8 -0.219 0.460 2.149
H9 0.964 -0.687 -1.493
H10 -0.219 0.460 -2.149

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.50011.50011.08562.15402.15402.16732.16052.16732.1605
C21.50012.60182.23881.09932.81881.10531.09532.99873.5187
C31.50012.60182.23882.81881.09932.99873.51871.10531.0953
H41.08562.23882.23883.07463.07462.83372.47492.83372.4749
H52.15401.09932.81883.07462.58941.76691.77923.29483.7807
H62.15402.81881.09933.07462.58943.29483.78071.76691.7792
H72.16731.10532.99872.83371.76693.29481.77272.98663.9972
H82.16051.09533.51872.47491.77923.78071.77273.99724.2976
H92.16732.99871.10532.83373.29481.76692.98663.99721.7727
H102.16053.51871.09532.47493.78071.77923.99724.29761.7727

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 110.978 C1 C2 H7 111.682
C1 C2 H8 111.753 C1 C3 H6 110.978
C1 C3 H9 111.682 C1 C3 H10 111.753
C2 C1 C3 120.276 C2 C1 H4 119.087
C3 C1 H4 119.087 H5 C2 H7 106.538
H5 C2 H8 108.330 H6 C3 H9 106.538
H6 C3 H10 108.330 H7 C2 H8 107.323
H9 C3 H10 107.323
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.150      
2 C -0.597      
3 C -0.597      
4 H 0.176      
5 H 0.194      
6 H 0.194      
7 H 0.194      
8 H 0.195      
9 H 0.194      
10 H 0.195      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.189 -0.137 0.000 0.233
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.506 0.329 0.000
y 0.329 -20.324 0.000
z 0.000 0.000 -20.244
Traceless
 xyz
x -1.222 0.329 0.000
y 0.329 0.551 0.000
z 0.000 0.000 0.671
Polar
3z2-r21.342
x2-y2-1.182
xy0.329
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.603 0.064 0.000
y 0.064 4.500 0.000
z 0.000 0.000 5.215


<r2> (average value of r2) Å2
<r2> 61.676
(<r2>)1/2 7.853