return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: wB97X-D/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at wB97X-D/cc-pVTZ
 hartrees
Energy at 0K-118.479682
Energy at 298.15K-118.485971
HF Energy-118.479682
Nuclear repulsion energy75.684815
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 wB97X-D/cc-pVTZ
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' 3202 3061 25.44      
2 A' 3124 2987 16.94      
3 A' 3050 2916 51.25      
4 A' 2981 2850 45.55      
5 A' 1504 1438 5.76      
6 A' 1486 1420 14.97      
7 A' 1419 1357 4.18      
8 A' 1187 1135 2.65      
9 A' 1037 991 0.04      
10 A' 896 857 1.94      
11 A' 396 379 14.59      
12 A' 355 340 11.43      
13 A' 149 143 0.49      
14 A" 3125 2987 26.05      
15 A" 3051 2916 5.64      
16 A" 2977 2846 25.44      
17 A" 1491 1425 1.54      
18 A" 1475 1410 0.54      
19 A" 1420 1358 8.45      
20 A" 1365 1305 1.91      
21 A" 1154 1103 0.13      
22 A" 960 918 0.87      
23 A" 943 901 0.00      
24 A" 167 160 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19457.4 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 18601.3 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 wB97X-D/cc-pVTZ
ABC
1.24996 0.28106 0.25076

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.009 0.538 0.000
C2 -0.009 -0.198 1.289
C3 -0.009 -0.198 -1.289
H4 0.185 1.602 0.000
H5 -0.771 -0.983 1.299
H6 -0.771 -0.983 -1.299
H7 0.951 -0.703 1.469
H8 -0.190 0.462 2.137
H9 0.951 -0.703 -1.469
H10 -0.190 0.462 -2.137

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.48461.48461.08152.14072.14072.14922.14612.14922.1461
C21.48462.57882.22251.09442.81041.09941.08942.96423.4942
C31.48462.57882.22252.81041.09442.96423.49421.09941.0894
H41.08152.22252.22253.04703.04702.83842.45092.83842.4509
H52.14071.09442.81043.04702.59831.75321.76883.27253.7728
H62.14072.81041.09443.04702.59833.27253.77281.75321.7688
H72.14921.09942.96422.83841.75323.27251.76182.93863.9578
H82.14611.08943.49422.45091.76883.77281.76183.95784.2742
H92.14922.96421.09942.83843.27251.75322.93863.95781.7618
H102.14613.49421.08942.45093.77281.76883.95784.27421.7618

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 111.308 C1 C2 H7 111.692
C1 C2 H8 112.059 C1 C3 H6 111.308
C1 C3 H9 111.692 C1 C3 H10 112.059
C2 C1 C3 120.575 C2 C1 H4 119.186
C3 C1 H4 119.186 H5 C2 H7 106.105
H5 C2 H8 108.178 H6 C3 H9 106.105
H6 C3 H10 108.178 H7 C2 H8 107.207
H9 C3 H10 107.207
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.177      
2 C -0.239      
3 C -0.239      
4 H 0.130      
5 H 0.085      
6 H 0.085      
7 H 0.086      
8 H 0.092      
9 H 0.086      
10 H 0.092      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.144 -0.119 0.000 0.187
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.477 0.275 0.000
y 0.275 -20.539 0.000
z 0.000 0.000 -20.582
Traceless
 xyz
x -0.916 0.275 0.000
y 0.275 0.490 0.000
z 0.000 0.000 0.426
Polar
3z2-r20.852
x2-y2-0.938
xy0.275
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.764 0.011 0.000
y 0.011 5.492 0.000
z 0.000 0.000 6.371


<r2> (average value of r2) Å2
<r2> 61.036
(<r2>)1/2 7.813