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: BLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-196.991683
Energy at 298.15K-197.002202
Nuclear repulsion energy179.713439
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/6-31+G**
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 3031 3015 49.29      
2 A 3021 3005 46.75      
3 A 3013 2997 37.15      
4 A 3007 2991 27.47      
5 A 2971 2955 19.34      
6 A 2963 2947 44.71      
7 A 2958 2942 18.96      
8 A 2957 2941 52.83      
9 A 2858 2842 92.66      
10 A 2841 2826 73.61      
11 A 2832 2817 55.72      
12 A 1470 1463 4.32      
13 A 1466 1459 6.73      
14 A 1456 1449 5.51      
15 A 1452 1444 5.75      
16 A 1445 1437 7.05      
17 A 1437 1430 1.44      
18 A 1436 1429 2.34      
19 A 1381 1374 0.97      
20 A 1369 1362 1.78      
21 A 1360 1353 1.73      
22 A 1324 1317 0.82      
23 A 1271 1265 2.51      
24 A 1242 1235 7.39      
25 A 1208 1202 2.97      
26 A 1055 1049 2.04      
27 A 1025 1020 3.43      
28 A 986 980 1.92      
29 A 979 974 0.22      
30 A 955 950 0.95      
31 A 913 909 0.97      
32 A 900 895 0.16      
33 A 763 759 1.71      
34 A 711 707 1.77      
35 A 421 419 0.76      
36 A 371 369 0.16      
37 A 339 337 0.97      
38 A 225 224 0.15      
39 A 201 200 1.19      
40 A 127 126 0.01      
41 A 114 113 0.06      
42 A 37 36 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 30945.0 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 30781.0 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/6-31+G**
ABC
0.22810 0.11115 0.08487

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.865 1.453 0.021
H2 0.013 2.111 -0.096
H3 -1.593 1.715 -0.767
H4 -1.341 1.732 0.990
C5 2.066 -0.036 -0.344
H6 2.112 1.056 -0.488
H7 3.010 -0.351 0.132
H8 2.009 -0.504 -1.341
C9 0.845 -0.445 0.532
H10 0.855 -1.541 0.662
H11 0.998 -0.014 1.547
C12 -0.497 -0.009 -0.015
C13 -1.603 -1.017 -0.188
H14 -1.218 -2.007 -0.488
H15 -2.178 -1.176 0.756
H16 -2.342 -0.692 -0.942

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 H11 C12 C13 H14 H15 H16
C11.10281.10461.11533.30743.04554.27563.73422.60433.51172.81971.50772.58653.51443.02872.7769
H21.10281.78461.77642.98102.38163.88563.51752.75973.82372.86132.18173.52184.31514.04033.7570
H31.10461.78461.77484.07853.77315.12514.26983.50614.31723.88062.17662.79273.75073.31892.5268
H41.11531.77641.77484.06403.81634.90024.65403.11883.95562.97202.18053.00264.02243.03523.2579
C53.30742.98104.07854.06401.10221.10341.10241.55752.17822.17222.58463.80173.83274.52974.4965
H63.04552.38163.77313.81631.10221.78091.78042.21283.10582.55502.85734.26484.52384.99254.8056
H74.27563.88565.12514.90021.10341.78091.78712.20422.51842.48303.52744.67264.58325.29015.4697
H83.73423.51754.26984.65401.10241.78041.78712.20602.53383.09892.87873.82703.66094.73054.3736
C92.60432.75973.50613.11881.55752.21282.20422.20601.10441.11351.51332.61532.78143.11773.5199
H103.51173.82374.31723.95562.17823.10582.51842.53381.10441.77062.15302.65382.41643.05623.6767
H112.81972.86133.88062.97202.17222.55502.48303.09891.11351.77062.16273.28413.60903.47314.2208
C121.50772.18172.17662.18052.58462.85733.52742.87871.51332.15302.16271.50652.17562.18602.1746
C132.58653.52182.79273.00263.80174.26484.67263.82702.61532.65383.28411.50651.10351.11571.1048
H143.51444.31513.75074.02243.83274.52384.58323.66092.78142.41643.60902.17561.10351.77701.7881
H153.02874.04033.31893.03524.52974.99255.29014.73053.11773.05623.47312.18601.11571.77701.7733
H162.77693.75702.52683.25794.49654.80565.46974.37363.51993.67674.22082.17461.10481.78811.7733

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 119.104 C1 C12 C13 118.208
H2 C1 H3 107.888 H2 C1 H4 106.422
H2 C1 C12 112.463 H3 C1 H4 106.165
H3 C1 C12 111.940 H4 C1 C12 111.589
C5 C9 H10 108.631 C5 C9 H11 107.668
C5 C9 C12 114.631 H6 C5 H7 107.688
H6 C5 H8 107.717 H6 C5 C9 111.451
H7 C5 H8 108.232 H7 C5 C9 110.703
H8 C5 C9 110.906 C9 C12 C13 120.007
H10 C9 H11 105.945 H10 C9 C12 109.683
H11 C9 C12 109.907 C12 C13 H14 112.012
C12 C13 H15 112.087 C12 C13 H16 111.852
H14 C13 H15 106.398 H14 C13 H16 108.140
H15 C13 H16 105.993
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.728      
2 H 0.142      
3 H 0.146      
4 H 0.151      
5 C -0.535      
6 H 0.141      
7 H 0.138      
8 H 0.149      
9 C -0.128      
10 H 0.127      
11 H 0.137      
12 C 0.362      
13 C -0.541      
14 H 0.145      
15 H 0.149      
16 H 0.146      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.101 -0.019 0.197 0.223
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.452 -0.122 0.323
y -0.122 -34.987 0.064
z 0.323 0.064 -35.931
Traceless
 xyz
x 0.007 -0.122 0.323
y -0.122 0.704 0.064
z 0.323 0.064 -0.711
Polar
3z2-r2-1.422
x2-y2-0.465
xy-0.122
xz0.323
yz0.064


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> 159.770
(<r2>)1/2 12.640