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

using model chemistry: ROHF/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 ROHF/3-21G*
 hartrees
Energy at 0K-116.982434
Energy at 298.15K-116.988888
HF Energy-116.982434
Nuclear repulsion energy75.323227
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 ROHF/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' 3329 3024 36.67      
2 A' 3251 2953 22.08      
3 A' 3216 2922 51.08      
4 A' 3161 2872 33.92      
5 A' 1669 1516 7.36      
6 A' 1667 1515 14.66      
7 A' 1584 1439 6.81      
8 A' 1304 1185 6.26      
9 A' 1168 1061 1.19      
10 A' 893 812 1.37      
11 A' 487 443 21.78      
12 A' 379 344 5.25      
13 A' 170 155 0.14      
14 A" 3251 2954 27.68      
15 A" 3213 2919 6.45      
16 A" 3157 2869 18.96      
17 A" 1658 1506 2.03      
18 A" 1653 1502 0.74      
19 A" 1568 1424 8.00      
20 A" 1489 1353 8.64      
21 A" 1170 1063 0.32      
22 A" 1056 959 0.21      
23 A" 1045 949 1.51      
24 A" 137 124 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20837.1 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 18930.5 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 ROHF/3-21G*
ABC
1.22344 0.27768 0.24768

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.017 0.561 0.000
C2 -0.017 -0.206 1.300
C3 -0.017 -0.206 -1.300
H4 0.397 1.553 0.000
H5 -0.796 -0.962 1.299
H6 -0.796 -0.962 -1.299
H7 0.933 -0.716 1.455
H8 -0.182 0.451 2.147
H9 0.933 -0.716 -1.455
H10 -0.182 0.451 -2.147

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.50911.50911.07482.14772.14772.15642.15572.15642.1557
C21.50912.59942.22571.08572.81611.08951.08392.95823.5120
C31.50912.59942.22572.81611.08572.95823.51201.08951.0839
H41.07482.22572.22573.07153.07152.74822.48172.74822.4817
H52.14771.08572.81613.07152.59731.75361.75793.26083.7737
H62.14772.81611.08573.07152.59733.26083.77371.75361.7579
H72.15641.08952.95822.74821.75363.26081.75562.90983.9464
H82.15571.08393.51202.48171.75793.77371.75563.94644.2931
H92.15642.95821.08952.74823.26081.75362.90983.94641.7556
H102.15573.51201.08392.48173.77371.75793.94644.29311.7556

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 110.670 C1 C2 H7 111.141
C1 C2 H8 111.429 C1 C3 H6 110.670
C1 C3 H9 111.141 C1 C3 H10 111.429
C2 C1 C3 118.921 C2 C1 H4 117.965
C3 C1 H4 117.965 H5 C2 H7 107.446
H5 C2 H8 108.239 H6 C3 H9 107.446
H6 C3 H10 108.239 H7 C2 H8 107.758
H9 C3 H10 107.758
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.189      
2 C -0.628      
3 C -0.628      
4 H 0.202      
5 H 0.207      
6 H 0.207      
7 H 0.205      
8 H 0.209      
9 H 0.205      
10 H 0.209      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.285 -0.135 0.000 0.315
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.702 0.550 -0.000
y 0.550 -20.892 0.001
z -0.000 0.001 -20.876
Traceless
 xyz
x -0.818 0.550 -0.000
y 0.550 0.398 0.001
z -0.000 0.001 0.421
Polar
3z2-r20.842
x2-y2-0.811
xy0.550
xz-0.000
yz0.001


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> 61.635
(<r2>)1/2 7.851