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

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-194.703762
Energy at 298.15K-194.710802
HF Energy-193.984986
Nuclear repulsion energy156.925130
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 MP2/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3179 3021 18.69      
2 A1 3162 3005 5.34      
3 A1 3061 2908 45.69      
4 A1 2050 1948 11.80      
5 A1 1531 1454 0.04      
6 A1 1483 1409 2.96      
7 A1 1425 1354 0.60      
8 A1 1322 1256 11.36      
9 A1 1033 982 6.05      
10 A1 743 706 0.04      
11 A1 337 320 0.06      
12 A2 3132 2976 0.00      
13 A2 1492 1417 0.00      
14 A2 1013 962 0.00      
15 A2 625 593 0.00      
16 A2 155 148 0.00      
17 B1 3250 3088 3.42      
18 B1 3133 2977 41.56      
19 B1 1508 1432 15.92      
20 B1 1105 1050 0.04      
21 B1 1020 970 0.42      
22 B1 424 403 0.49      
23 B1 257 244 5.09      
24 B1 175 166 1.54      
25 B2 3178 3020 13.22      
26 B2 3059 2906 19.00      
27 B2 1506 1431 6.43      
28 B2 1410 1340 5.04      
29 B2 1243 1181 4.53      
30 B2 982 933 0.18      
31 B2 859 817 48.96      
32 B2 593 564 10.44      
33 B2 179 170 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 24810.8 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 23575.2 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 MP2/6-311G**
ABC
0.27541 0.11991 0.08780

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.248
C2 0.000 0.000 0.933
H3 -0.930 0.000 2.811
H4 0.930 0.000 2.811
C5 0.000 0.000 -0.382
C6 0.000 1.287 -1.174
C7 0.000 -1.287 -1.174
H8 0.000 2.159 -0.518
H9 0.000 -2.159 -0.518
H10 0.884 1.333 -1.821
H11 -0.884 1.333 -1.821
H12 -0.884 -1.333 -1.821
H13 0.884 -1.333 -1.821

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.31501.08671.08672.63053.65663.65663.50913.50914.37244.37244.37244.3724
C21.31502.09512.09511.31552.46952.46952.60162.60163.18503.18503.18503.1850
H31.08672.09511.85963.32564.28984.28984.07514.07515.14984.82004.82005.1498
H41.08672.09511.85963.32564.28984.28984.07514.07514.82005.14985.14984.8200
C52.63051.31553.32563.32561.51131.51132.16362.16362.15132.15132.15132.1513
C63.65662.46954.28984.28981.51132.57411.09183.50841.09631.09632.83962.8396
C73.65662.46954.28984.28981.51132.57413.50841.09182.83962.83961.09631.0963
H83.50912.60164.07514.07512.16361.09183.50844.31871.77861.77863.83093.8309
H93.50912.60164.07514.07512.16363.50841.09184.31873.83093.83091.77861.7786
H104.37243.18505.14984.82002.15131.09632.83961.77863.83091.76803.19872.6656
H114.37243.18504.82005.14982.15131.09632.83961.77863.83091.76802.66563.1987
H124.37243.18504.82005.14982.15132.83961.09633.83091.77863.19872.66561.7680
H134.37243.18505.14984.82002.15132.83961.09633.83091.77862.66563.19871.7680

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 121.171
C2 C1 H4 121.171 C2 C5 C6 121.611
C2 C5 C7 121.611 H3 C1 H4 117.658
C5 C6 H8 111.421 C5 C6 H10 110.167
C5 C6 H11 110.167 C5 C7 H9 111.421
C5 C7 H12 110.167 C5 C7 H13 110.167
C6 C5 C7 116.778 H8 C6 H10 108.749
H8 C6 H11 108.749 H9 C7 H12 108.749
H9 C7 H13 108.749 H10 C6 H11 107.485
H12 C7 H13 107.485
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability