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: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A"
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-157.330239
Energy at 298.15K-157.322840
HF Energy-156.696025
Nuclear repulsion energy125.622026
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 MP2/6-31G(2df,p)
Rotational Constants (cm-1) from geometry optimized at MP2/6-31G(2df,p)
ABC
0.26842 0.26842 0.14604

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.192 0.000
C2 1.479 -0.020 0.000
C3 -0.739 -0.020 1.280
C4 -0.739 -0.020 -1.280
H5 1.731 -1.091 0.000
H6 -0.866 -1.091 1.499
H7 -0.866 -1.091 -1.499
H8 1.947 0.414 -0.885
H9 1.947 0.414 0.885
H10 -0.207 0.414 2.129
H11 -1.740 0.414 1.244
H12 -1.740 0.414 -1.244
H13 -0.207 0.414 -2.129

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12 H13
C11.49381.49381.49382.15492.15492.15492.15072.15072.15072.15072.15072.1507
C21.49382.56102.56101.10022.98142.98141.09211.09212.75003.47823.47822.7500
C31.49382.56102.56102.98141.10022.98143.47822.75001.09211.09212.75003.4782
C41.49382.56102.56102.98142.98141.10022.75003.47823.47822.75001.09211.0921
H52.15491.10022.98142.98142.99832.99831.76001.76003.24893.98313.98313.2489
H62.15492.98141.10022.98142.99832.99833.98313.24891.76001.76003.24893.9831
H72.15492.98142.98141.10022.99832.99833.24893.98313.98313.24891.76001.7600
H82.15071.09213.47822.75001.76003.98313.24891.77093.70514.25823.70512.4873
H92.15071.09212.75003.47821.76003.24893.98311.77092.48733.70514.25823.7051
H102.15072.75001.09213.47823.24891.76003.98313.70512.48731.77093.70514.2582
H112.15073.47821.09212.75003.98311.76003.24894.25823.70511.77092.48733.7051
H122.15073.47822.75001.09213.98313.24891.76003.70514.25823.70512.48731.7709
H132.15072.75003.47821.09213.24893.98311.76002.48733.70514.25823.70511.7709

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 111.445 C1 C2 H8 111.603
C1 C2 H9 111.603 C1 C3 H6 111.445
C1 C3 H10 111.603 C1 C3 H11 111.603
C1 C4 H7 111.445 C1 C4 H12 111.603
C1 C4 H13 111.603 C2 C1 C3 118.011
C2 C1 C4 118.011 C3 C1 C4 118.011
H5 C2 H8 106.795 H5 C2 H9 106.795
H6 C3 H10 106.795 H6 C3 H11 106.795
H7 C4 H12 106.795 H7 C4 H13 106.795
H8 C2 H9 108.345 H10 C3 H11 108.345
H12 C4 H13 108.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability