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

using model chemistry: wB97X-D/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/6-311G**
 hartrees
Energy at 0K-195.290468
Energy at 298.15K-195.298073
HF Energy-195.290468
Nuclear repulsion energy160.699139
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 wB97X-D/6-311G**
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' 3249 3108 14.20      
2 A' 3239 3099 13.03      
3 A' 3171 3033 6.86      
4 A' 3158 3021 12.07      
5 A' 3153 3015 5.57      
6 A' 3147 3010 17.73      
7 A' 3046 2913 20.26      
8 A' 1747 1671 1.93      
9 A' 1693 1619 27.67      
10 A' 1506 1440 8.11      
11 A' 1461 1397 1.89      
12 A' 1441 1378 5.26      
13 A' 1416 1354 9.88      
14 A' 1343 1284 0.98      
15 A' 1336 1278 0.10      
16 A' 1094 1047 5.09      
17 A' 1014 970 0.19      
18 A' 970 928 0.68      
19 A' 801 766 0.16      
20 A' 539 516 0.18      
21 A' 438 419 1.43      
22 A' 280 268 0.83      
23 A" 3106 2971 18.94      
24 A" 1479 1415 10.03      
25 A" 1073 1026 0.18      
26 A" 1029 984 12.35      
27 A" 948 907 57.21      
28 A" 935 894 40.65      
29 A" 794 759 0.73      
30 A" 645 617 0.00      
31 A" 404 387 10.91      
32 A" 167 160 0.32      
33 A" 138 132 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 24978.8 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 23892.2 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 wB97X-D/6-311G**
ABC
0.28593 0.13998 0.09564

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.582 1.731 0.000
C2 0.000 0.529 0.000
C3 -0.829 -0.686 0.000
C4 -0.371 -1.936 0.000
C5 1.496 0.367 0.000
H6 -1.662 1.837 0.000
H7 -0.001 2.647 0.000
H8 -1.904 -0.516 0.000
H9 0.690 -2.166 0.000
H10 -1.051 -2.781 0.000
H11 1.994 1.337 0.000
H12 1.826 -0.191 0.882
H13 1.826 -0.191 -0.882

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.33512.42953.67322.48541.08561.08502.60664.09944.53592.60543.20443.2044
C21.33511.47122.49321.50452.11532.11802.17182.78243.47272.15122.15182.1518
C32.42951.47121.33172.55222.65733.43471.08812.12122.10643.47322.84152.8415
C43.67322.49321.33172.96433.98854.59842.09021.08541.08424.03812.94122.9412
C52.48541.50452.55222.96433.48362.72773.51222.65804.04861.09081.09421.0942
H61.08562.11532.65733.98853.48361.84822.36534.64354.65853.68994.13024.1302
H71.08502.11803.43474.59842.72771.84823.69124.86285.52862.38633.48843.4884
H82.60662.17181.08812.09023.51222.36533.69123.07462.42064.31563.84663.8466
H94.09942.78242.12121.08542.65804.64354.86283.07461.84593.73822.44352.4435
H104.53593.47272.10641.08424.04864.65855.52862.42061.84595.12123.97013.9701
H112.60542.15123.47324.03811.09083.68992.38634.31563.73825.12121.77211.7721
H123.20442.15182.84152.94121.09424.13023.48843.84662.44353.97011.77211.7635
H133.20442.15182.84152.94121.09424.13023.48843.84662.44353.97011.77211.7635

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 119.850 C1 C2 C5 122.037
C2 C1 H6 121.467 C2 C1 H7 121.787
C2 C3 C4 125.547 C2 C3 H8 115.297
C2 C5 H11 110.963 C2 C5 H12 110.805
C2 C5 H13 110.805 C3 C2 C5 118.112
C3 C4 H9 122.376 C3 C4 H10 121.021
C4 C3 H8 119.156 H6 C1 H7 116.746
H9 C4 H10 116.603 H11 C5 H12 108.387
H11 C5 H13 108.387 H12 C5 H13 107.373
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.198      
2 C -0.113      
3 C -0.108      
4 C -0.234      
5 C -0.313      
6 H 0.113      
7 H 0.113      
8 H 0.107      
9 H 0.118      
10 H 0.123      
11 H 0.120      
12 H 0.135      
13 H 0.135      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.252 -0.027 0.000 0.254
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.339 0.099 0.000
y 0.099 -29.870 0.000
z 0.000 0.000 -34.996
Traceless
 xyz
x 3.094 0.099 0.000
y 0.099 2.298 0.000
z 0.000 0.000 -5.392
Polar
3z2-r2-10.784
x2-y20.531
xy0.099
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.256 -1.033 0.000
y -1.033 12.921 0.000
z 0.000 0.000 4.753


<r2> (average value of r2) Å2
<r2> 130.918
(<r2>)1/2 11.442