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

using model chemistry: MP2=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-194.913471
Energy at 298.15K-194.920631
HF Energy-194.007814
Nuclear repulsion energy158.178666
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 MP2=FULL/cc-pVTZ
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 3184 3023 14.78      
2 A1 3181 3020 1.96      
3 A1 3078 2922 42.54      
4 A1 2068 1964 17.17      
5 A1 1537 1459 0.02      
6 A1 1492 1416 4.65      
7 A1 1418 1347 0.43      
8 A1 1328 1261 13.10      
9 A1 1035 982 6.24      
10 A1 751 713 0.09      
11 A1 342 324 0.09      
12 A2 3137 2978 0.00      
13 A2 1499 1423 0.00      
14 A2 1013 961 0.00      
15 A2 628 596 0.00      
16 A2 175 167 0.00      
17 B1 3253 3088 1.33      
18 B1 3137 2978 30.22      
19 B1 1515 1439 15.55      
20 B1 1107 1051 0.00      
21 B1 1030 978 0.79      
22 B1 451 429 0.35      
23 B1 264 251 4.74      
24 B1 190 180 1.83      
25 B2 3181 3020 10.94      
26 B2 3076 2920 15.92      
27 B2 1508 1431 6.31      
28 B2 1406 1335 6.22      
29 B2 1247 1184 4.03      
30 B2 981 931 0.17      
31 B2 894 849 49.05      
32 B2 596 566 10.34      
33 B2 177 168 0.47      

Unscaled Zero Point Vibrational Energy (zpe) 24938.1 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 23676.3 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 MP2=FULL/cc-pVTZ
ABC
0.28063 0.12164 0.08918

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.232
C2 0.000 0.000 0.927
H3 -0.922 0.000 2.791
H4 0.922 0.000 2.791
C5 0.000 0.000 -0.378
C6 0.000 1.274 -1.167
C7 0.000 -1.274 -1.167
H8 0.000 2.141 -0.516
H9 0.000 -2.141 -0.516
H10 0.877 1.317 -1.808
H11 -0.877 1.317 -1.808
H12 -0.877 -1.317 -1.808
H13 0.877 -1.317 -1.808

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.30481.07831.07832.60963.62903.62903.48343.48344.33904.33904.33904.3390
C21.30482.07972.07971.30482.45042.45042.58182.58183.16013.16013.16013.1601
H31.07832.07971.84383.30044.25844.25844.04624.04625.11144.78464.78465.1114
H41.07832.07971.84383.30044.25844.25844.04624.04624.78465.11145.11144.7846
C52.60961.30483.30043.30041.49811.49812.14522.14522.13332.13332.13332.1333
C63.62902.45044.25844.25841.49812.54751.08363.47581.08771.08772.80992.8099
C73.62902.45044.25844.25841.49812.54753.47581.08362.80992.80991.08771.0877
H83.48342.58184.04624.04622.14521.08363.47584.28141.76531.76533.79443.7944
H93.48342.58184.04624.04622.14523.47581.08364.28143.79443.79441.76531.7653
H104.33903.16015.11144.78462.13331.08772.80991.76533.79441.75413.16532.6348
H114.33903.16014.78465.11142.13331.08772.80991.76533.79441.75412.63483.1653
H124.33903.16014.78465.11142.13332.80991.08773.79441.76533.16532.63481.7541
H134.33903.16015.11144.78462.13332.80991.08773.79441.76532.63483.16531.7541

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 121.249
C2 C1 H4 121.249 C2 C5 C6 121.758
C2 C5 C7 121.758 H3 C1 H4 117.502
C5 C6 H8 111.376 C5 C6 H10 110.166
C5 C6 H11 110.166 C5 C7 H9 111.376
C5 C7 H12 110.166 C5 C7 H13 110.166
C6 C5 C7 116.483 H8 C6 H10 108.780
H8 C6 H11 108.780 H9 C7 H12 108.780
H9 C7 H13 108.780 H10 C6 H11 107.473
H12 C7 H13 107.473
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability