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 C(CH3)3 (Tert-butyl radical)

using model chemistry: HF/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A"
Energy calculated at HF/daug-cc-pVTZ
 hartrees
Energy at 0K-156.732651
Energy at 298.15K-156.741408
HF Energy-156.732651
Nuclear repulsion energy125.627447
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/daug-cc-pVTZ
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 3215 2908 68.67      
2 A 3215 2908 68.67      
3 A 3207 2901 0.00      
4 A 3181 2877 55.04      
5 A 3174 2871 22.97      
6 A 3174 2871 22.97      
7 A 3094 2799 98.79      
8 A 3085 2791 29.62      
9 A 3085 2791 29.62      
10 A 1613 1459 17.25      
11 A 1608 1454 3.35      
12 A 1608 1454 3.35      
13 A 1593 1441 1.85      
14 A 1593 1441 1.85      
15 A 1587 1436 0.00      
16 A 1545 1398 2.21      
17 A 1522 1377 3.52      
18 A 1522 1377 3.52      
19 A 1378 1246 5.20      
20 A 1378 1246 5.20      
21 A 1197 1082 1.27      
22 A 1077 975 1.48      
23 A 1077 975 1.48      
24 A 1044 944 0.00      
25 A 1011 915 0.04      
26 A 1011 915 0.04      
27 A 793 718 1.49      
28 A 396 359 0.11      
29 A 396 359 0.11      
30 A 303 274 2.78      
31 A 165 149 0.02      
32 A 165 149 0.02      
33 A 142 128 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 27076.5 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 24493.4 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/daug-cc-pVTZ
ABC
0.26764 0.26764 0.14558

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.202
C2 -1.483 -0.000 -0.022
C3 0.742 1.284 -0.022
C4 0.742 -1.284 -0.022
H5 -1.722 -0.000 -1.088
H6 0.861 1.492 -1.088
H7 0.861 -1.492 -1.088
H8 -1.950 -0.878 0.409
H9 -1.950 0.878 0.409
H10 0.215 2.128 0.409
H11 1.735 1.250 0.409
H12 1.735 -1.250 0.409
H13 0.215 -2.128 0.409

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
C11.49991.49991.49992.15172.15172.15172.14842.14842.14842.14842.14842.1484
C21.49992.56872.56871.09192.97572.97571.08401.08402.75603.47933.47932.7560
C31.49992.56872.56872.97571.09192.97573.47932.75601.08401.08402.75603.4793
C41.49992.56872.56872.97572.97571.09192.75603.47933.47932.75601.08401.0840
H52.15171.09192.97572.97572.98312.98311.75051.75053.24353.96963.96963.2435
H62.15172.97571.09192.97572.98312.98313.96963.24351.75051.75053.24353.9696
H72.15172.97572.97571.09192.98312.98313.24353.96963.96963.24351.75051.7505
H82.14841.08403.47932.75601.75053.96963.24351.75563.70384.25523.70382.4995
H92.14841.08402.75603.47931.75053.24353.96961.75562.49953.70384.25523.7038
H102.14842.75601.08403.47933.24351.75053.96963.70382.49951.75563.70384.2552
H112.14843.47931.08402.75603.96961.75053.24354.25523.70381.75562.49953.7038
H122.14843.47932.75601.08403.96963.24351.75053.70384.25523.70382.49951.7556
H132.14842.75603.47931.08403.24353.96961.75052.49953.70384.25523.70381.7556

picture of Tert-butyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 111.261 C1 C2 H8 111.483
C1 C2 H9 111.483 C1 C3 H6 111.261
C1 C3 H10 111.483 C1 C3 H11 111.483
C1 C4 H7 111.261 C1 C4 H12 111.483
C1 C4 H13 111.483 C2 C1 C3 117.802
C2 C1 C4 117.802 C3 C1 C4 117.802
H5 C2 H8 107.120 H5 C2 H9 107.120
H6 C3 H10 107.120 H6 C3 H11 107.120
H7 C4 H12 107.120 H7 C4 H13 107.120
H8 C2 H9 108.154 H10 C3 H11 108.154
H12 C4 H13 108.154
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.186      
2 C -1.473      
3 C -1.473      
4 C -1.473      
5 H 0.335      
6 H 0.335      
7 H 0.335      
8 H 0.372      
9 H 0.372      
10 H 0.372      
11 H 0.372      
12 H 0.372      
13 H 0.372      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.236 0.236
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.777 0.000 0.000
y 0.000 -27.777 0.000
z 0.000 0.000 -28.310
Traceless
 xyz
x 0.266 0.000 0.000
y 0.000 0.266 0.000
z 0.000 0.000 -0.533
Polar
3z2-r2-1.065
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.616 0.000 0.000
y 0.000 7.616 0.000
z 0.000 0.000 6.449


<r2> (average value of r2) Å2
<r2> 98.194
(<r2>)1/2 9.909