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All results from a given calculation for CH3CH(CH3)CH3 (Isobutane)

using model chemistry: B3LYP/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3LYP/cc-pVDZ
 hartrees
Energy at 0K-158.459509
Energy at 298.15K 
HF Energy-158.459509
Nuclear repulsion energy133.870473
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 B3LYP/cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at B3LYP/cc-pVDZ
ABC
0.25777 0.25777 0.14935

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.372
H2 0.000 0.000 1.479
C3 0.000 1.461 -0.095
C4 1.265 -0.731 -0.095
C5 -1.265 -0.731 -0.095
H6 0.000 1.522 -1.198
H7 1.318 -0.761 -1.198
H8 -1.318 -0.761 -1.198
H9 0.891 2.001 0.267
H10 -0.891 2.001 0.267
H11 1.287 -1.772 0.267
H12 2.178 -0.229 0.267
H13 -2.178 -0.229 0.267
H14 -1.287 -1.772 0.267

Atom - Atom Distances (Å)
  C1 H2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13 H14
C11.10721.53421.53421.53422.18672.18672.18672.19252.19252.19252.19252.19252.1925
H21.10722.14822.14822.14823.07983.07983.07982.50302.50302.50302.50302.50302.5030
C31.53422.14822.53092.53091.10462.80902.80901.10271.10273.49872.78062.78063.4987
C41.53422.14822.53092.53092.80901.10462.80902.78063.49871.10271.10273.49872.7806
C51.53422.14822.53092.53092.80902.80901.10463.49872.78062.78063.49871.10271.1027
H62.18673.07981.10462.80902.80902.63562.63561.78081.78083.82783.15543.15543.8278
H72.18673.07982.80901.10462.80902.63562.63563.15543.82781.78081.78083.82783.1554
H82.18673.07982.80902.80901.10462.63562.63563.82783.15543.15543.82781.78081.7808
H92.19252.50301.10272.78063.49871.78083.15543.82781.78163.79322.57453.79324.3560
H102.19252.50301.10273.49872.78061.78083.82783.15541.78164.35603.79322.57453.7932
H112.19252.50303.49871.10272.78063.82781.78083.15543.79324.35601.78163.79322.5745
H122.19252.50302.78061.10273.49873.15541.78083.82782.57453.79321.78164.35603.7932
H132.19252.50302.78063.49871.10273.15543.82781.78083.79322.57453.79324.35601.7816
H142.19252.50303.49872.78061.10273.82783.15541.78084.35603.79322.57453.79321.7816

picture of Isobutane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H6 110.875 C1 C3 H9 111.450
C1 C3 H10 111.450 C1 C4 H7 110.875
C1 C4 H11 111.450 C1 C4 H12 111.450
C1 C5 H8 110.875 C1 C5 H13 111.450
C1 C5 H14 111.450 H2 C1 C3 107.740
H2 C1 C4 107.740 H2 C1 C5 107.740
C3 C1 C4 111.146 C3 C1 C5 111.146
C4 C1 C5 111.146 H6 C3 H9 107.557
H6 C3 H10 107.557 H7 C4 H11 107.557
H7 C4 H12 107.557 H8 C5 H13 107.557
H8 C5 H14 107.557 H9 C3 H10 107.762
H11 C4 H12 107.762 H13 C5 H14 107.762
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.144      
2 H -0.009      
3 C 0.020      
4 C 0.020      
5 C 0.020      
6 H 0.012      
7 H 0.012      
8 H 0.012      
9 H 0.010      
10 H 0.010      
11 H 0.010      
12 H 0.010      
13 H 0.010      
14 H 0.010      


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 0.107 0.107
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.805 0.000 0.000
y 0.000 -28.805 0.000
z 0.000 0.000 -28.315
Traceless
 xyz
x -0.245 0.000 0.000
y 0.000 -0.245 0.000
z 0.000 0.000 0.491
Polar
3z2-r20.981
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 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> 99.965
(<r2>)1/2 9.998