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All results from a given calculation for C5H8 (1,2-Butadiene, 3-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 C2V 1A1
Energy calculated at PBEPBE/6-31G**
 hartrees
Energy at 0K-195.024433
Energy at 298.15K-195.031394
Nuclear repulsion energy156.259737
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 A1 3088 3046 14.86      
2 A1 3061 3019 11.48      
3 A1 2969 2928 56.82      
4 A1 2026 1998 19.99      
5 A1 1481 1460 1.17      
6 A1 1433 1414 3.81      
7 A1 1370 1351 1.46      
8 A1 1287 1269 16.74      
9 A1 999 986 8.65      
10 A1 729 719 0.06      
11 A1 330 326 0.24      
12 A2 3025 2983 0.00      
13 A2 1437 1417 0.00      
14 A2 970 957 0.00      
15 A2 596 588 0.00      
16 A2 168 165 0.00      
17 B1 3131 3088 6.69      
18 B1 3025 2984 43.23      
19 B1 1454 1434 14.84      
20 B1 1059 1045 0.82      
21 B1 989 975 0.11      
22 B1 446 439 0.52      
23 B1 261 257 4.04      
24 B1 179 177 1.48      
25 B2 3087 3045 15.44      
26 B2 2965 2924 18.42      
27 B2 1445 1425 6.38      
28 B2 1354 1335 2.82      
29 B2 1188 1172 5.49      
30 B2 939 926 0.30      
31 B2 822 811 48.89      
32 B2 590 582 6.87      
33 B2 178 175 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 24039.7 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 23710.4 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
0.27366 0.11895 0.08714

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.254
C2 0.000 0.000 0.939
H3 -0.933 0.000 2.831
H4 0.933 0.000 2.831
C5 0.000 0.000 -0.382
C6 0.000 1.290 -1.178
C7 0.000 -1.290 -1.178
H8 0.000 2.173 -0.524
H9 0.000 -2.173 -0.524
H10 0.888 1.340 -1.835
H11 -0.888 1.340 -1.835
H12 -0.888 -1.340 -1.835
H13 0.888 -1.340 -1.835

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.31561.09661.09662.63603.66683.66683.52753.52754.39354.39354.39354.3935
C21.31562.10972.10971.32042.47882.47882.61972.61973.20553.20553.20553.2055
H31.09662.10971.86553.34534.31354.31354.10494.10495.18434.85454.85455.1843
H41.09662.10971.86553.34534.31354.31354.10494.10494.85455.18435.18434.8545
C52.63601.32043.34533.34531.51571.51572.17792.17792.16682.16682.16682.1668
C63.66682.47884.31354.31351.51572.57911.09943.52401.10511.10512.85212.8521
C73.66682.47884.31354.31351.51572.57913.52401.09942.85212.85211.10511.1051
H83.52752.61974.10494.10492.17791.09943.52404.34641.78851.78853.85353.8535
H93.52752.61974.10494.10492.17793.52401.09944.34643.85353.85351.78851.7885
H104.39353.20555.18434.85452.16681.10512.85211.78853.85351.77523.21502.6804
H114.39353.20554.85455.18432.16681.10512.85211.78853.85351.77522.68043.2150
H124.39353.20554.85455.18432.16682.85211.10513.85351.78853.21502.68041.7752
H134.39353.20555.18434.85452.16682.85211.10513.85351.78852.68043.21501.7752

picture of 1,2-Butadiene, 3-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 180.000 C2 C1 H3 121.726
C2 C1 H4 121.726 C2 C5 C6 121.703
C2 C5 C7 121.703 H3 C1 H4 116.547
C5 C6 H8 111.791 C5 C6 H10 110.558
C5 C6 H11 110.558 C5 C7 H9 111.791
C5 C7 H12 110.558 C5 C7 H13 110.558
C6 C5 C7 116.593 H8 C6 H10 108.450
H8 C6 H11 108.450 H9 C7 H12 108.450
H9 C7 H13 108.450 H10 C6 H11 106.873
H12 C7 H13 106.873
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 -0.460      
2 C 0.273      
3 H 0.130      
4 H 0.130      
5 C -0.082      
6 C -0.392      
7 C -0.392      
8 H 0.135      
9 H 0.135      
10 H 0.130      
11 H 0.130      
12 H 0.130      
13 H 0.130      


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 -0.613 0.613
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.402 0.000 0.000
y 0.000 -31.616 0.000
z 0.000 0.000 -29.090
Traceless
 xyz
x -1.050 0.000 0.000
y 0.000 -1.370 0.000
z 0.000 0.000 2.420
Polar
3z2-r24.839
x2-y20.213
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.699 0.000 0.000
y 0.000 6.428 0.000
z 0.000 0.000 13.177


<r2> (average value of r2) Å2
<r2> 144.005
(<r2>)1/2 12.000