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All results from a given calculation for CH3CHCH2CH3 (2-Butyl radical)

using model chemistry: HF/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-27.159650
Energy at 298.15K-27.168459
Nuclear repulsion energy70.607373
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 HF/CEP-121G*
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 3286 2968 67.81      
2 A 3246 2933 74.75      
3 A 3244 2930 27.26      
4 A 3241 2928 86.55      
5 A 3203 2894 59.19      
6 A 3183 2875 18.47      
7 A 3176 2869 51.73      
8 A 3131 2829 77.08      
9 A 3115 2814 49.82      
10 A 1634 1476 2.70      
11 A 1628 1470 5.50      
12 A 1621 1464 2.95      
13 A 1614 1459 3.14      
14 A 1613 1457 3.35      
15 A 1555 1405 0.13      
16 A 1546 1397 1.54      
17 A 1524 1376 0.05      
18 A 1418 1281 10.50      
19 A 1383 1249 0.44      
20 A 1266 1144 0.23      
21 A 1184 1070 0.17      
22 A 1167 1054 1.72      
23 A 1089 983 0.17      
24 A 1057 955 0.30      
25 A 1043 942 1.91      
26 A 891 805 0.26      
27 A 825 745 0.38      
28 A 484 437 17.74      
29 A 440 397 2.11      
30 A 270 244 0.77      
31 A 254 230 0.09      
32 A 147 133 0.12      
33 A 75 68 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 27275.2 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 24640.4 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 HF/CEP-121G*
ABC
0.88373 0.11988 0.11276

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.004 -0.038 -0.064
H2 2.106 -0.832 -0.802
H3 2.698 0.756 -0.325
H4 2.324 -0.450 0.897
C5 0.583 0.470 -0.002
H6 0.425 1.474 0.368
C7 -0.569 -0.503 0.103
H8 -0.541 -1.002 1.077
H9 -0.440 -1.293 -0.638
C10 -1.942 0.160 -0.084
H11 -2.111 0.929 0.668
H12 -2.019 0.630 -1.062
H13 -2.744 -0.569 0.003

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 H9 C10 H11 H12 H13
C11.08851.08681.09351.50992.22852.61912.95072.80653.95094.28904.19834.7777
H21.08851.76021.75472.15713.08422.84243.25052.59304.22964.80004.38444.9234
H31.08681.76021.75712.15852.48293.52703.94353.76104.68484.91324.77655.6109
H41.09351.75471.75712.16532.75533.00062.92413.27274.42054.65004.88595.1482
C51.50992.15712.15852.16531.08181.51152.14422.13522.54572.81352.81433.4858
H62.22853.08422.48292.75531.08182.22862.75133.06862.74462.61052.95483.7882
C72.61912.84243.52703.00061.51152.22861.09491.09021.53702.17902.17802.1788
H82.95073.25053.94352.92412.14422.75131.09491.74182.15922.52183.06942.4885
H92.80652.59303.76103.27272.13523.06861.09021.74182.16223.07102.52372.4982
C103.95094.22964.68484.42052.54572.74461.53702.15922.16221.08811.08741.0876
H114.28904.80004.91324.65002.81352.61052.17902.52183.07101.08811.75791.7575
H124.19834.38444.77654.88592.81432.95482.17803.06942.52371.08741.75791.7596
H134.77774.92345.61095.14823.48583.78822.17882.48852.49821.08761.75751.7596

picture of 2-Butyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 117.648 C1 C5 C7 120.187
H2 C1 H3 108.028 H2 C1 H4 107.057
H2 C1 C5 111.196 H3 C1 H4 107.385
H3 C1 C5 111.414 H4 C1 C5 111.549
C5 C7 H8 109.672 C5 C7 H9 109.241
C5 C7 C10 113.240 H6 C5 C7 117.532
C7 C10 H11 111.051 C7 C10 H12 111.017
C7 C10 H13 111.069 H8 C7 H9 105.717
H8 C7 C10 109.090 H9 C7 C10 109.605
H11 C10 H12 107.806 H11 C10 H13 107.757
H12 C10 H13 107.993
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.505      
2 H 0.159      
3 H 0.170      
4 H 0.155      
5 C -0.155      
6 H 0.156      
7 C -0.232      
8 H 0.141      
9 H 0.145      
10 C -0.509      
11 H 0.150      
12 H 0.157      
13 H 0.167      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.052 -0.152 0.260 0.306
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.066 0.288 0.011
y 0.288 -27.593 0.549
z 0.011 0.549 -28.038
Traceless
 xyz
x -0.250 0.288 0.011
y 0.288 0.459 0.549
z 0.011 0.549 -0.208
Polar
3z2-r2-0.417
x2-y2-0.473
xy0.288
xz0.011
yz0.549


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.449 0.004 -0.021
y 0.004 6.434 0.044
z -0.021 0.044 5.814


<r2> (average value of r2) Å2
<r2> 99.893
(<r2>)1/2 9.995