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All results from a given calculation for C5H8 (1,3-Butadiene, 2-methyl-)

using model chemistry: PBEPBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31G**
 hartrees
Energy at 0K-195.040158
Energy at 298.15K-195.047653
Nuclear repulsion energy159.517682
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 PBEPBE/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' 3187 3143 14.60      
2 A' 3179 3136 12.02      
3 A' 3101 3058 2.86      
4 A' 3091 3048 8.42      
5 A' 3082 3040 10.82      
6 A' 3079 3037 16.77      
7 A' 2977 2936 17.66      
8 A' 1664 1641 2.04      
9 A' 1628 1605 17.60      
10 A' 1464 1444 6.14      
11 A' 1419 1399 1.81      
12 A' 1396 1377 2.48      
13 A' 1371 1352 6.83      
14 A' 1304 1286 1.06      
15 A' 1285 1268 0.25      
16 A' 1058 1043 4.42      
17 A' 980 966 0.24      
18 A' 943 930 0.83      
19 A' 787 776 0.09      
20 A' 519 512 0.24      
21 A' 413 408 1.36      
22 A' 269 266 0.79      
23 A" 3038 2997 15.68      
24 A" 1443 1423 7.44      
25 A" 1037 1023 0.30      
26 A" 992 979 15.32      
27 A" 881 869 16.88      
28 A" 874 862 58.36      
29 A" 764 753 0.32      
30 A" 620 612 0.00      
31 A" 395 390 6.14      
32 A" 195 193 0.58      
33 A" 163 161 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 24298.7 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 23965.8 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 PBEPBE/6-31G**
ABC
0.28262 0.13784 0.09429

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.592 1.743 0.000
C2 0.000 0.525 0.000
C3 -0.828 -0.686 0.000
C4 -0.371 -1.956 0.000
C5 1.502 0.376 0.000
H6 -1.681 1.847 0.000
H7 -0.007 2.667 0.000
H8 -1.912 -0.514 0.000
H9 0.697 -2.192 0.000
H10 -1.059 -2.806 0.000
H11 2.002 1.356 0.000
H12 1.846 -0.186 0.886
H13 1.846 -0.186 -0.886

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.35422.44093.70602.50061.09451.09372.61514.14074.57292.62263.23213.2321
C21.35421.46722.50901.50942.13852.14222.17632.80493.49522.16762.16722.1672
C32.44091.46721.34952.56062.67293.45261.09792.14272.13213.48972.86042.8604
C43.70602.50901.34952.99164.02224.63792.11031.09391.09294.07482.97222.9722
C52.50061.50942.56062.99163.50662.74343.52832.69124.08451.10001.10411.1041
H61.09452.13852.67294.02223.50661.86482.37214.68684.69403.71604.16604.1660
H71.09372.14223.45264.63792.74341.86483.70844.90985.57342.39903.51523.5152
H82.61512.17631.09792.11033.52832.37213.70843.10182.44534.33803.87463.8746
H94.14072.80492.14271.09392.69124.68684.90983.10181.86003.78032.47562.4756
H104.57293.49522.13211.09294.08454.69405.57342.44531.86005.16624.01064.0106
H112.62262.16763.48974.07481.10003.71602.39904.33803.78035.16621.78521.7852
H123.23212.16722.86042.97221.10414.16603.51523.87462.47564.01061.78521.7722
H133.23212.16722.86042.97221.10414.16603.51523.87462.47564.01061.78521.7722

picture of 1,3-Butadiene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 119.745 C1 C2 C5 121.578
C2 C1 H6 121.340 C2 C1 H7 121.755
C2 C3 C4 125.892 C2 C3 H8 115.327
C2 C5 H11 111.370 C2 C5 H12 111.089
C2 C5 H13 111.089 C3 C2 C5 118.677
C3 C4 H9 122.203 C3 C4 H10 121.253
C4 C3 H8 118.782 H6 C1 H7 116.905
H9 C4 H10 116.544 H11 C5 H12 108.180
H11 C5 H13 108.180 H12 C5 H13 106.752
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.314      
2 C 0.172      
3 C -0.067      
4 C -0.282      
5 C -0.434      
6 H 0.107      
7 H 0.106      
8 H 0.092      
9 H 0.107      
10 H 0.112      
11 H 0.124      
12 H 0.138      
13 H 0.138      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.278 -0.007 0.000 0.278
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.138 0.106 0.000
y 0.106 -29.750 0.000
z 0.000 0.000 -34.190
Traceless
 xyz
x 2.832 0.106 0.000
y 0.106 1.914 0.000
z 0.000 0.000 -4.747
Polar
3z2-r2-9.494
x2-y20.612
xy0.106
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.168 -0.730 0.000
y -0.730 12.845 0.000
z 0.000 0.000 3.921


<r2> (average value of r2) Å2
<r2> 132.331
(<r2>)1/2 11.504