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 C5H11 (2-Methylbut-2-yl radical)

using model chemistry: B97D3/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B97D3/3-21G
 hartrees
Energy at 0K-195.917694
Energy at 298.15K-195.928473
HF Energy-195.917694
Nuclear repulsion energy 
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 B97D3/3-21G
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 3076 3023 46.41      
2 A 3063 3011 44.13      
3 A 3045 2993 42.37      
4 A 3041 2990 20.50      
5 A 3018 2967 13.95      
6 A 2996 2945 47.34      
7 A 2994 2943 18.94      
8 A 2992 2941 30.74      
9 A 2976 2925 29.81      
10 A 2903 2854 51.73      
11 A 2896 2847 23.77      
12 A 1540 1514 0.85      
13 A 1538 1512 5.09      
14 A 1536 1510 8.24      
15 A 1525 1499 15.45      
16 A 1518 1492 2.75      
17 A 1506 1481 2.70      
18 A 1506 1480 1.39      
19 A 1438 1414 5.14      
20 A 1418 1393 5.21      
21 A 1415 1391 2.75      
22 A 1347 1324 4.32      
23 A 1331 1308 0.34      
24 A 1276 1254 9.74      
25 A 1235 1214 1.58      
26 A 1096 1077 4.67      
27 A 1055 1037 0.98      
28 A 1051 1033 10.58      
29 A 995 978 1.39      
30 A 974 957 0.29      
31 A 960 944 0.77      
32 A 892 876 0.53      
33 A 802 789 3.61      
34 A 713 701 0.45      
35 A 452 445 4.12      
36 A 395 388 0.04      
37 A 355 349 1.48      
38 A 223 220 0.00      
39 A 185 182 2.45      
40 A 145 142 0.00      
41 A 130 127 0.05      
42 A 70 69 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 31810.1 cm-1
Scaled (by 0.983) Zero Point Vibrational Energy (zpe) 31269.3 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 B97D3/3-21G
ABC
0.20777 0.12197 0.09485

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.160 1.293 -0.151
H2 -0.793 2.146 0.440
H3 -0.919 1.500 -1.216
H4 -2.260 1.258 -0.074
C5 1.863 -0.000 -0.505
H6 1.681 0.893 -1.121
H7 2.916 -0.000 -0.186
H8 1.681 -0.893 -1.121
C9 0.905 -0.000 0.733
H10 1.122 -0.893 1.344
H11 1.122 0.892 1.345
C12 -0.542 0.000 0.315
C13 -1.161 -1.292 -0.152
H14 -0.793 -2.146 0.439
H15 -2.260 -1.258 -0.074
H16 -0.920 -1.500 -1.216

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 H11 C12 C13 H14 H15 H16
C11.10171.11081.10253.30693.02874.27703.71352.59253.49622.75881.50682.58523.50882.77842.9980
H21.10171.78161.79043.54273.18184.33074.21802.75263.70412.46182.16463.50884.29293.74244.0064
H31.11081.78161.77733.23932.67174.24523.53483.06224.05533.33072.17582.99814.00653.27212.9996
H41.10251.79041.77734.33164.09365.32794.60993.50024.25153.68592.16412.77833.74242.51593.2717
C53.30693.54273.23934.33161.09961.10101.09961.56582.18322.18322.54113.30733.54314.33193.2398
H63.02873.18182.67174.09361.09961.78811.78602.19943.09462.52782.79313.71384.21834.61023.5354
H74.27704.33074.24525.32791.10101.78811.78822.21142.52132.52123.49484.27734.33105.32824.2457
H83.71354.21803.53484.60991.09961.78601.78822.19942.52793.09462.79323.02923.18244.09412.6724
C92.59252.75263.06223.50021.56582.19942.21142.19941.10301.10301.50682.59252.75263.50023.0624
H103.49623.70414.05534.25152.18323.09462.52132.52791.10301.78432.15132.75872.46173.68583.3307
H112.75882.46183.33073.68592.18322.52782.52123.09461.10301.78432.15123.49623.70404.25144.0554
C121.50682.16462.17582.16412.54112.79313.49482.79321.50682.15132.15121.50682.16462.16412.1758
C132.58523.50882.99812.77833.30733.71384.27733.02922.59252.75873.49621.50681.10171.10251.1108
H143.50884.29294.00653.74243.54314.21834.33103.18242.75262.46173.70402.16461.10171.79041.7816
H152.77843.74243.27212.51594.33194.61025.32824.09413.50023.68584.25142.16411.10251.79041.7773
H162.99804.00642.99963.27173.23983.53544.24572.67243.06243.33074.05542.17581.11081.78161.7773

picture of 2-Methylbut-2-yl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C12 C9 118.750 C1 C12 C13 118.483
H2 C1 H3 108.220 H2 C1 H4 107.113
H2 C1 C12 111.663 H3 C1 H4 106.849
H3 C1 C12 111.494 H4 C1 C12 111.264
C5 C9 H10 109.052 C5 C9 H11 108.420
C5 C9 C12 112.450 H6 C5 H7 108.169
H6 C5 H8 108.031 H6 C5 C9 110.679
H7 C5 H8 108.656 H7 C5 C9 110.946
H8 C5 C9 110.271 C9 C12 C13 120.422
H10 C9 H11 106.722 H10 C9 C12 109.910
H11 C9 C12 110.108 C12 C13 H14 111.500
C12 C13 H15 111.662 C12 C13 H16 111.305
H14 C13 H15 107.097 H14 C13 H16 108.380
H15 C13 H16 106.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.610      
2 H 0.199      
3 H 0.196      
4 H 0.200      
5 C -0.569      
6 H 0.197      
7 H 0.192      
8 H 0.197      
9 C -0.442      
10 H 0.197      
11 H 0.197      
12 C 0.061      
13 C -0.610      
14 H 0.199      
15 H 0.200      
16 H 0.196      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.102 0.000 -0.318 0.334
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.743 0.000 0.747
y 0.000 -33.324 0.000
z 0.747 0.000 -34.725
Traceless
 xyz
x 0.282 0.000 0.747
y 0.000 0.910 0.000
z 0.747 0.000 -1.192
Polar
3z2-r2-2.383
x2-y2-0.419
xy0.000
xz0.747
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.469 0.000 0.348
y 0.000 7.876 0.000
z 0.348 0.000 6.616


<r2> (average value of r2) Å2
<r2> 149.955
(<r2>)1/2 12.246