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 CH3CHCH2CH3 (2-Butyl radical)

using model chemistry: BLYP/6-31G

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/6-31G
 hartrees
Energy at 0K-157.644435
Energy at 298.15K-157.652854
Nuclear repulsion energy120.660441
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/6-31G
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 3086 3062 41.60      
2 A 3040 3017 42.37      
3 A 3033 3010 47.04      
4 A 3021 2998 30.83      
5 A 2965 2942 34.72      
6 A 2951 2929 44.58      
7 A 2919 2897 31.01      
8 A 2857 2836 61.62      
9 A 2823 2801 48.65      
10 A 1512 1501 4.02      
11 A 1505 1494 5.67      
12 A 1495 1484 4.37      
13 A 1481 1469 5.67      
14 A 1480 1469 1.40      
15 A 1419 1409 1.35      
16 A 1417 1406 2.61      
17 A 1382 1371 0.22      
18 A 1317 1307 9.45      
19 A 1258 1248 0.14      
20 A 1174 1165 0.55      
21 A 1119 1111 0.53      
22 A 1072 1064 0.38      
23 A 1005 997 2.23      
24 A 986 979 1.76      
25 A 982 974 4.00      
26 A 833 826 0.32      
27 A 775 769 2.07      
28 A 426 423 0.93      
29 A 400 397 20.62      
30 A 263 261 1.24      
31 A 225 223 0.05      
32 A 101 101 0.10      
33 A 58 57 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 25189.2 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 24997.8 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/6-31G
ABC
0.86247 0.11845 0.11158

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.005 -0.041 0.081
H2 -2.089 -0.814 0.871
H3 -2.695 0.782 0.335
H4 -2.399 -0.512 -0.849
C5 -0.588 0.441 -0.074
H6 -0.414 1.482 -0.374
C7 0.578 -0.513 -0.106
H8 0.600 -1.069 -1.076
H9 0.437 -1.301 0.663
C10 1.955 0.174 0.097
H11 2.132 0.939 -0.680
H12 2.003 0.676 1.079
H13 2.780 -0.557 0.044

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 H9 C10 H11 H12 H13
C11.10811.10371.11571.50402.24822.63253.03042.80843.96574.31854.19194.8122
H21.10811.78931.77372.17233.10202.85623.32982.58034.23424.82604.35974.9446
H31.10371.78931.77922.17312.48873.54804.03463.77584.69614.93514.75845.6438
H41.11571.77371.77922.18882.85403.06913.05953.30964.50904.76114.95145.2559
C51.50402.17232.17312.18881.09701.50762.16742.15202.56342.83102.84643.5149
H62.24823.10202.48872.85401.09702.24452.83393.09002.74742.62162.93383.8127
C72.63252.85623.54803.06911.50762.24451.11821.11091.55232.20252.20212.2069
H83.03043.32984.03463.05952.16742.83391.11821.76282.18132.55603.10772.5034
H92.80842.58033.77583.30962.15203.09001.11091.76282.19193.11422.55672.5351
C103.96574.23424.69614.50902.56342.74741.55232.18132.19191.10471.10371.1034
H114.31854.82604.93514.76112.83102.62162.20252.55603.11421.10471.78361.7843
H124.19194.35974.75844.95142.84642.93382.20213.10772.55671.10371.78361.7871
H134.81224.94465.64385.25593.51493.81272.20692.50342.53511.10341.78431.7871

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 118.785 C1 C5 C7 121.876
H2 C1 H3 107.997 H2 C1 H4 105.804
H2 C1 C5 111.636 H3 C1 H4 106.578
H3 C1 C5 111.969 H4 C1 C5 112.492
C5 C7 H8 110.384 C5 C7 H9 109.615
C5 C7 C10 113.793 H6 C5 C7 118.171
C7 C10 H11 110.854 C7 C10 H12 110.884
C7 C10 H13 111.281 H8 C7 H9 104.530
H8 C7 C10 108.437 H9 C7 C10 109.668
H11 C10 H12 107.732 H11 C10 H13 107.813
H12 C10 H13 108.134
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.414      
2 H 0.125      
3 H 0.125      
4 H 0.126      
5 C -0.034      
6 H 0.090      
7 C -0.237      
8 H 0.116      
9 H 0.113      
10 C -0.366      
11 H 0.119      
12 H 0.123      
13 H 0.113      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.073 -0.149 -0.138 0.216
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.190 -0.104 -0.058
y -0.104 -27.201 -0.313
z -0.058 -0.313 -27.963
Traceless
 xyz
x 0.392 -0.104 -0.058
y -0.104 0.375 -0.313
z -0.058 -0.313 -0.767
Polar
3z2-r2-1.534
x2-y20.011
xy-0.104
xz-0.058
yz-0.313


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> 118.984
(<r2>)1/2 10.908