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All results from a given calculation for CH2CH(CH3)2 (Isobutyl radical)

using model chemistry: MP2/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A'
Energy calculated at MP2/cc-pVDZ
 hartrees
Energy at 0K-157.235086
Energy at 298.15K 
HF Energy-156.678486
Nuclear repulsion energy125.957734
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/cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at MP2/cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.360 0.000
C2 1.481 0.121 0.000
H3 -0.176 1.459 0.000
H4 2.047 0.155 0.936
H5 2.047 0.155 -0.936
C6 -0.656 -0.209 -1.266
C7 -0.656 -0.209 1.266
H8 -0.530 -1.305 -1.304
H9 -1.736 0.014 -1.286
H10 -0.202 0.218 -2.176
H11 -0.530 -1.305 1.304
H12 -1.736 0.014 1.286
H13 -0.202 0.218 2.176

Atom - Atom Distances (Å)
  C1 C2 H3 H4 H5 C6 C7 H8 H9 H10 H11 H12 H13
C11.50051.11342.25992.25991.53491.53492.18012.18792.19002.18012.18792.1900
C21.50052.13001.09401.09402.50572.50572.78893.46652.75262.78893.46652.7526
H31.11342.13002.74132.74132.14842.14843.07692.48532.50533.07692.48532.5053
H42.25991.09402.74131.87183.50502.74703.71344.38943.83972.98453.80162.5684
H52.25991.09402.74131.87182.74703.50502.98453.80162.56843.71344.38943.8397
C61.53492.50572.14843.50502.74702.53181.10401.10311.10332.79692.78023.4980
C71.53492.50572.14842.74703.50502.53182.79692.78023.49801.10401.10311.1033
H82.18012.78893.07693.71342.98451.10402.79691.78771.78542.60833.14723.8131
H92.18793.46652.48534.38943.80161.10312.78021.78771.78553.14722.57233.7925
H102.19002.75262.50533.83972.56841.10333.49801.78541.78553.81313.79254.3522
H112.18012.78893.07692.98453.71342.79691.10402.60833.14723.81311.78771.7854
H122.18793.46652.48533.80164.38942.78021.10313.14722.57233.79251.78771.7855
H132.19002.75262.50532.56843.83973.49801.10333.81313.79254.35221.78541.7855

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 120.346 C1 C2 H5 120.346
C1 C6 H8 110.339 C1 C6 H9 111.012
C1 C6 H10 111.167 C1 C7 H11 110.339
C1 C7 H12 111.012 C1 C7 H13 111.167
C2 C1 H3 108.242 C2 C1 C6 111.273
C2 C1 C7 111.273 H3 C1 C6 107.363
H3 C1 C7 107.363 H4 C2 H5 117.623
C6 C1 C7 111.124 H8 C6 H9 108.182
H8 C6 H10 107.977 H9 C6 H10 108.047
H11 C7 H12 108.182 H11 C7 H13 107.977
H12 C7 H13 108.047
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability