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

using model chemistry: BLYP/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 BLYP/3-21G*
 hartrees
Energy at 0K-117.747169
Energy at 298.15K-117.753273
HF Energy-117.747169
Nuclear repulsion energy74.610711
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 BLYP/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' 3100 3080 30.77      
2 A' 3017 2998 17.70      
3 A' 2956 2937 46.22      
4 A' 2866 2848 55.68      
5 A' 1525 1515 4.75      
6 A' 1513 1503 12.95      
7 A' 1429 1420 4.33      
8 A' 1178 1171 6.25      
9 A' 1043 1036 2.22      
10 A' 842 836 1.53      
11 A' 391 389 12.03      
12 A' 349 346 17.83      
13 A' 117 116 0.24      
14 A" 3018 2998 29.37      
15 A" 2954 2934 9.17      
16 A" 2860 2842 20.09      
17 A" 1512 1502 1.41      
18 A" 1500 1490 0.49      
19 A" 1412 1402 1.63      
20 A" 1359 1350 9.16      
21 A" 1099 1092 0.97      
22 A" 959 953 2.12      
23 A" 951 945 0.12      
24 A" 119 118 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 19034.1 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 18910.4 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 BLYP/3-21G*
ABC
1.21857 0.27232 0.24327

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.011 0.545 0.000
C2 -0.011 -0.202 1.310
C3 -0.011 -0.202 -1.310
H4 0.231 1.611 0.000
H5 -0.749 -1.027 1.298
H6 -0.749 -1.027 -1.298
H7 0.978 -0.668 1.523
H8 -0.246 0.463 2.159
H9 0.978 -0.668 -1.523
H10 -0.246 0.463 -2.159

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.50821.50821.09332.16792.16792.18392.17322.18392.1732
C21.50822.62102.24991.10692.83381.11431.10303.03733.5402
C31.50822.62102.24992.83381.10693.03733.54021.11431.1030
H41.09332.24992.24993.09903.09902.84132.49132.84132.4913
H52.16791.10692.83383.09902.59641.77821.79243.32733.7978
H62.16792.83381.10693.09902.59643.32733.79781.77821.7924
H72.18391.11433.03732.84131.77823.32731.78393.04604.0415
H82.17321.10303.54022.49131.79243.79781.78394.04154.3177
H92.18393.03731.11432.84133.32731.77823.04604.04151.7839
H102.17323.54021.10302.49133.79781.79244.04154.31771.7839

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 111.063 C1 C2 H7 111.891
C1 C2 H8 111.721 C1 C3 H6 111.063
C1 C3 H9 111.891 C1 C3 H10 111.721
C2 C1 C3 120.660 C2 C1 H4 118.866
C3 C1 H4 118.866 H5 C2 H7 106.374
H5 C2 H8 108.404 H6 C3 H9 106.374
H6 C3 H10 108.404 H7 C2 H8 107.134
H9 C3 H10 107.134
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.127      
2 C -0.561      
3 C -0.561      
4 H 0.158      
5 H 0.182      
6 H 0.182      
7 H 0.182      
8 H 0.182      
9 H 0.182      
10 H 0.182      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.189 -0.148 0.000 0.240
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.551 0.324 0.000
y 0.324 -20.392 0.000
z 0.000 0.000 -20.238
Traceless
 xyz
x -1.236 0.324 0.000
y 0.324 0.503 0.000
z 0.000 0.000 0.733
Polar
3z2-r21.466
x2-y2-1.159
xy0.324
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.671 0.058 0.000
y 0.058 4.615 0.000
z 0.000 0.000 5.488


<r2> (average value of r2) Å2
<r2> 62.392
(<r2>)1/2 7.899