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All results from a given calculation for CH2CH(CH3)2 (Isobutyl 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 2A'
Energy calculated at BLYP/6-31G
 hartrees
Energy at 0K-157.637797
Energy at 298.15K-157.646407
Nuclear repulsion energy124.796366
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 3075 3052 23.54      
2 A 3039 3016 79.59      
3 A 3035 3012 55.92      
4 A 2964 2941 22.18      
5 A 2804 2783 43.76      
6 A 1516 1504 7.54      
7 A 1509 1498 5.64      
8 A 1462 1451 0.72      
9 A 1415 1405 1.84      
10 A 1299 1289 4.52      
11 A 1193 1184 2.14      
12 A 1093 1084 1.43      
13 A 963 956 1.52      
14 A 788 782 0.03      
15 A 534 530 29.19      
16 A 414 411 13.78      
17 A 356 353 0.31      
18 A 251 249 0.04      
19 A 3179 3155 28.54      
20 A 3032 3009 1.16      
21 A 3032 3009 25.64      
22 A 2959 2936 45.80      
23 A 1499 1488 1.65      
24 A 1497 1486 1.25      
25 A 1403 1392 2.80      
26 A 1307 1297 2.20      
27 A 1162 1153 0.74      
28 A 959 952 0.05      
29 A 947 940 1.31      
30 A 893 886 0.52      
31 A 373 370 0.09      
32 A 228 227 0.01      
33 A 110 110 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 25145.6 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 24954.5 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
0.27439 0.25680 0.15010

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.359 0.000
C2 1.494 0.164 0.000
H3 -0.215 1.458 0.000
H4 2.060 0.150 0.936
H5 2.060 0.150 -0.936
C6 -0.660 -0.223 -1.287
C7 -0.660 -0.223 1.287
H8 -0.524 -1.318 -1.331
H9 -1.743 -0.009 -1.306
H10 -0.210 0.213 -2.196
H11 -0.524 -1.318 1.331
H12 -1.743 -0.009 1.306
H13 -0.210 0.213 2.196

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 C6 C7 H8 H9 H10 H11 H12 H13
C11.50711.11912.27262.27261.55921.55922.20442.20872.21092.20442.20872.2109
C21.50712.14391.09391.09392.53922.53922.83573.49502.78002.83573.49502.7800
H31.11912.14392.78662.78662.16282.16283.09352.48792.52423.09352.48792.5242
H42.27261.09392.78661.87223.53272.76783.73774.41753.86862.99753.82422.5967
H52.27261.09392.78661.87222.76783.53272.99753.82422.59673.73774.41753.8686
C61.55922.53922.16283.53272.76782.57421.10431.10391.10412.84152.81823.5391
C71.55922.53922.16282.76783.53272.57422.84152.81823.53911.10431.10391.1041
H82.20442.83573.09353.73772.99751.10432.84151.78871.78602.66273.18653.8581
H92.20873.49502.48794.41753.82421.10392.81821.78871.78683.18652.61183.8294
H102.21092.78002.52423.86862.59671.10413.53911.78601.78683.85813.82944.3922
H112.20442.83573.09352.99753.73772.84151.10432.66273.18653.85811.78871.7860
H122.20873.49502.48793.82424.41752.81821.10393.18652.61183.82941.78871.7868
H132.21092.78002.52422.59673.86863.53911.10413.85813.82944.39221.78601.7868

picture of Isobutyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 120.968 C1 C2 H5 120.968
C1 C6 H8 110.553 C1 C6 H9 110.915
C1 C6 H10 111.071 C1 C7 H11 110.553
C1 C7 H12 110.915 C1 C7 H13 111.071
C2 C1 H3 108.539 C2 C1 C6 111.797
C2 C1 C7 111.797 H3 C1 C6 106.556
H3 C1 C7 106.556 H4 C2 H5 117.689
C6 C1 C7 111.277 H8 C6 H9 108.196
H8 C6 H10 107.943 H9 C6 H10 108.045
H11 C7 H12 108.196 H11 C7 H13 107.943
H12 C7 H13 108.045
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.071      
2 C -0.223      
3 H 0.117      
4 H 0.102      
5 H 0.102      
6 C -0.362      
7 C -0.362      
8 H 0.121      
9 H 0.113      
10 H 0.115      
11 H 0.121      
12 H 0.113      
13 H 0.115      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.184 0.161 0.000 0.245
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.660 -0.061 0.000
y -0.061 -28.172 0.000
z 0.000 0.000 -27.241
Traceless
 xyz
x 0.047 -0.061 0.000
y -0.061 -0.722 0.000
z 0.000 0.000 0.675
Polar
3z2-r21.350
x2-y20.512
xy-0.061
xz0.000
yz0.000


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> 96.666
(<r2>)1/2 9.832