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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-194.314052
Energy at 298.15K-194.321143
HF Energy-193.861901
Nuclear repulsion energy155.515039
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 MP2/6-31G
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 3157 3021 13.61      
2 A1 3151 3015 21.18      
3 A1 3045 2913 48.30      
4 A1 2037 1949 8.69      
5 A1 1582 1513 0.19      
6 A1 1544 1478 0.78      
7 A1 1486 1422 0.64      
8 A1 1351 1292 10.50      
9 A1 1054 1008 6.83      
10 A1 735 703 0.00      
11 A1 358 343 0.13      
12 A2 3112 2978 0.00      
13 A2 1551 1484 0.00      
14 A2 1058 1012 0.00      
15 A2 642 614 0.00      
16 A2 159 152 0.00      
17 B1 3235 3095 11.99      
18 B1 3114 2980 55.15      
19 B1 1562 1495 15.52      
20 B1 1163 1112 0.09      
21 B1 1089 1042 0.05      
22 B1 454 434 1.27      
23 B1 228 218 4.76      
24 B1 162 155 0.72      
25 B2 3150 3014 20.91      
26 B2 3043 2911 21.95      
27 B2 1567 1499 5.68      
28 B2 1471 1407 4.82      
29 B2 1243 1190 5.43      
30 B2 1013 969 0.29      
31 B2 944 903 58.94      
32 B2 611 585 8.45      
33 B2 176 168 0.46      

Unscaled Zero Point Vibrational Energy (zpe) 25122.4 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 24037.1 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 MP2/6-31G
ABC
0.27304 0.11684 0.08592

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.276
C2 0.000 0.000 0.947
H3 -0.925 0.000 2.853
H4 0.925 0.000 2.853
C5 0.000 0.000 -0.382
C6 0.000 1.292 -1.193
C7 0.000 -1.292 -1.193
H8 0.000 2.172 -0.536
H9 0.000 -2.172 -0.536
H10 0.889 1.339 -1.841
H11 -0.889 1.339 -1.841
H12 -0.889 -1.339 -1.841
H13 0.889 -1.339 -1.841

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.32811.09061.09062.65783.70143.70143.55273.55274.41974.41974.41974.4197
C21.32812.11862.11861.32972.50032.50032.63012.63013.21903.21903.21903.2190
H31.09062.11861.84983.36534.34734.34734.13044.13045.20824.88244.88245.2082
H41.09062.11861.84983.36534.34734.34734.13044.13044.88245.20825.20824.8824
C52.65781.32973.36533.36531.52571.52572.17742.17742.17092.17092.17092.1709
C63.70142.50034.34734.34731.52572.58501.09783.52621.10121.10122.85252.8525
C73.70142.50034.34734.34731.52572.58503.52621.09782.85252.85251.10121.1012
H83.55272.63014.13044.13042.17741.09783.52624.34391.78551.78553.85013.8501
H93.55272.63014.13044.13042.17743.52621.09784.34393.85013.85011.78551.7855
H104.41973.21905.20824.88242.17091.10122.85251.78553.85011.77743.21462.6785
H114.41973.21904.88245.20822.17091.10122.85251.78553.85011.77742.67853.2146
H124.41973.21904.88245.20822.17092.85251.10123.85011.78553.21462.67851.7774
H134.41973.21905.20824.88242.17092.85251.10123.85011.78552.67853.21461.7774

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 121.998
C2 C1 H4 121.998 C2 C5 C6 122.097
C2 C5 C7 122.097 H3 C1 H4 116.004
C5 C6 H8 111.141 C5 C6 H10 110.423
C5 C6 H11 110.423 C5 C7 H9 111.141
C5 C7 H12 110.423 C5 C7 H13 110.423
C6 C5 C7 115.807 H8 C6 H10 108.570
H8 C6 H11 108.570 H9 C7 H12 108.570
H9 C7 H13 108.570 H10 C6 H11 107.613
H12 C7 H13 107.613
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability