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

using model chemistry: MP2=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-194.683627
Energy at 298.15K-194.691286
HF Energy-193.969740
Nuclear repulsion energy160.670990
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/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 A' 3349 3130 12.53      
2 A' 3336 3118 12.16      
3 A' 3253 3039 3.41      
4 A' 3237 3025 13.22      
5 A' 3235 3023 8.72      
6 A' 3232 3020 11.06      
7 A' 3125 2920 15.72      
8 A' 1743 1629 1.41      
9 A' 1692 1581 8.63      
10 A' 1563 1460 5.73      
11 A' 1511 1412 0.43      
12 A' 1480 1383 2.56      
13 A' 1456 1361 4.38      
14 A' 1373 1283 0.60      
15 A' 1352 1263 0.24      
16 A' 1115 1042 3.64      
17 A' 1035 967 0.19      
18 A' 994 929 0.35      
19 A' 815 762 0.13      
20 A' 538 503 0.12      
21 A' 426 398 1.35      
22 A' 285 266 0.69      
23 A" 3209 2998 16.15      
24 A" 1539 1438 6.21      
25 A" 1099 1027 0.09      
26 A" 1030 963 18.61      
27 A" 916 855 33.31      
28 A" 904 845 38.19      
29 A" 788 736 0.73      
30 A" 644 602 0.20      
31 A" 393 367 5.62      
32 A" 214 200 0.39      
33 A" 148 138 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 25513.9 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 23840.1 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=FULL/6-31G**
ABC
0.28637 0.13974 0.09557

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.584 1.735 0.000
C2 0.000 0.523 0.000
C3 -0.830 -0.682 0.000
C4 -0.367 -1.942 0.000
C5 1.494 0.368 0.000
H6 -1.660 1.840 0.000
H7 -0.001 2.645 0.000
H8 -1.903 -0.521 0.000
H9 0.690 -2.165 0.000
H10 -1.043 -2.783 0.000
H11 1.983 1.339 0.000
H12 1.827 -0.184 0.878
H13 1.827 -0.184 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.34502.43003.68332.48661.08091.08032.61294.10294.54142.59723.20403.2040
C21.34501.46382.49221.50162.11832.12142.17012.77553.46692.14422.14672.1467
C32.43001.46381.34202.55022.65503.42881.08462.12332.11153.46392.84192.8419
C43.68332.49221.34202.96593.99644.60112.09261.07971.07934.03522.94432.9443
C52.48661.50162.55022.96593.47962.72333.51052.65794.04531.08691.08951.0895
H61.08092.11832.65503.99643.47961.84352.37274.64314.66383.67694.12584.1258
H71.08032.12143.42884.60112.72331.84353.69254.85925.52692.37543.48083.4808
H82.61292.17011.08462.09263.51052.37273.69253.07002.42044.30763.84593.8459
H94.10292.77552.12331.07972.65794.64314.85923.07001.83943.73502.44672.4467
H104.54143.46692.11151.07934.04534.66385.52692.42041.83945.11323.96953.9695
H112.59722.14423.46394.03521.08693.67692.37544.30763.73505.11321.76501.7650
H123.20402.14672.84192.94431.08954.12583.48083.84592.44673.96951.76501.7556
H133.20402.14672.84192.94431.08954.12583.48083.84592.44673.96951.76501.7556

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 119.734 C1 C2 C5 121.646
C2 C1 H6 121.275 C2 C1 H7 121.640
C2 C3 C4 125.251 C2 C3 H8 115.964
C2 C5 H11 110.840 C2 C5 H12 110.883
C2 C5 H13 110.883 C3 C2 C5 118.620
C3 C4 H9 122.143 C3 C4 H10 121.008
C4 C3 H8 118.785 H6 C1 H7 117.084
H9 C4 H10 116.849 H11 C5 H12 108.382
H11 C5 H13 108.382 H12 C5 H13 107.350
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability