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

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-195.341638
Energy at 298.15K-195.349244
HF Energy-195.341638
Nuclear repulsion energy160.326710
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 TPSSh/6-31G(2df,p)
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' 3235 3122 17.07      
2 A' 3226 3113 14.24      
3 A' 3155 3044 4.19      
4 A' 3143 3033 14.68      
5 A' 3138 3028 10.34      
6 A' 3119 3010 20.91      
7 A' 3025 2919 21.65      
8 A' 1698 1639 1.76      
9 A' 1662 1604 18.00      
10 A' 1512 1459 5.17      
11 A' 1466 1415 0.88      
12 A' 1437 1387 1.93      
13 A' 1412 1363 2.91      
14 A' 1330 1284 1.72      
15 A' 1323 1277 0.18      
16 A' 1087 1049 3.22      
17 A' 1004 969 0.11      
18 A' 962 928 0.89      
19 A' 792 765 0.09      
20 A' 523 505 0.08      
21 A' 408 394 1.92      
22 A' 261 252 0.92      
23 A" 3081 2973 20.20      
24 A" 1491 1439 5.60      
25 A" 1072 1034 0.08      
26 A" 1039 1002 13.13      
27 A" 931 898 13.44      
28 A" 923 891 54.36      
29 A" 795 768 0.41      
30 A" 643 620 0.04      
31 A" 405 391 5.70      
32 A" 200 193 0.35      
33 A" 165 159 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 24831.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 23962.1 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 TPSSh/6-31G(2df,p)
ABC
0.28472 0.13924 0.09516

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.584 1.737 0.000
C2 0.000 0.528 0.000
C3 -0.828 -0.684 0.000
C4 -0.375 -1.944 0.000
C5 1.500 0.366 0.000
H6 -1.665 1.847 0.000
H7 -0.004 2.656 0.000
H8 -1.903 -0.505 0.000
H9 0.684 -2.184 0.000
H10 -1.057 -2.789 0.000
H11 1.998 1.339 0.000
H12 1.835 -0.192 0.882
H13 1.835 -0.192 -0.882

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.34272.43383.68752.49471.08651.08602.60154.12084.55082.61193.21753.2175
C21.34271.46832.50081.50912.12392.12772.16522.79673.48132.15612.15972.1597
C32.43381.46831.33912.55472.66603.44021.08922.12962.11703.47582.84842.8484
C43.68752.50081.33912.97614.00484.61512.09871.08591.08534.05142.95512.9551
C52.49471.50912.55472.97613.49442.73983.51292.67744.06141.09291.09631.0963
H61.08652.12392.66604.00483.49441.84682.36434.66514.67573.69734.14554.1455
H71.08602.12773.44024.61512.73981.84683.68724.88825.54552.39603.50333.5033
H82.60152.16521.08922.09873.51292.36433.68723.08362.43534.31463.85323.8532
H94.12082.79672.12961.08592.67744.66514.88823.08361.84323.76002.46332.4633
H104.55083.48132.11701.08534.06144.67575.54552.43531.84325.13553.98543.9854
H112.61192.15613.47584.05141.09293.69732.39604.31463.76005.13551.77501.7750
H123.21752.15972.84842.95511.09634.14553.50333.85322.46333.98541.77501.7638
H133.21752.15972.84842.95511.09634.14553.50333.85322.46333.98541.77501.7638

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 119.884 C1 C2 C5 121.931
C2 C1 H6 121.576 C2 C1 H7 121.985
C2 C3 C4 125.880 C2 C3 H8 114.879
C2 C5 H11 110.906 C2 C5 H12 110.989
C2 C5 H13 110.989 C3 C2 C5 118.185
C3 C4 H9 122.505 C3 C4 H10 121.312
C4 C3 H8 119.241 H6 C1 H7 116.439
H9 C4 H10 116.183 H11 C5 H12 108.351
H11 C5 H13 108.351 H12 C5 H13 107.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability