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

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-194.635140
Energy at 298.15K-194.642786
HF Energy-193.955908
Nuclear repulsion energy160.155291
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 MP3/6-31G*
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' 3301 3098 14.92      
2 A' 3289 3087 13.95      
3 A' 3222 3024 3.33      
4 A' 3208 3011 8.09      
5 A' 3201 3004 9.33      
6 A' 3191 2995 17.80      
7 A' 3097 2907 15.22      
8 A' 1773 1664 0.94      
9 A' 1719 1613 11.47      
10 A' 1562 1466 6.96      
11 A' 1512 1419 0.52      
12 A' 1485 1394 4.23      
13 A' 1465 1375 6.39      
14 A' 1378 1294 0.55      
15 A' 1363 1279 0.31      
16 A' 1121 1052 4.53      
17 A' 1039 975 0.30      
18 A' 994 933 0.30      
19 A' 813 763 0.16      
20 A' 542 509 0.13      
21 A' 431 404 1.23      
22 A' 287 270 0.73      
23 A" 3163 2969 17.58      
24 A" 1540 1446 7.53      
25 A" 1101 1033 0.04      
26 A" 1026 963 20.23      
27 A" 926 869 40.30      
28 A" 911 856 43.26      
29 A" 787 739 0.82      
30 A" 647 608 0.18      
31 A" 395 371 6.50      
32 A" 212 199 0.32      
33 A" 142 133 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 25421.3 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 23860.4 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 MP3/6-31G*
ABC
0.28419 0.13889 0.09495

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.588 1.734 0.000
C2 0.000 0.528 0.000
C3 -0.831 -0.690 0.000
C4 -0.368 -1.947 0.000
C5 1.501 0.376 0.000
H6 -1.670 1.841 0.000
H7 -0.011 2.654 0.000
H8 -1.908 -0.524 0.000
H9 0.692 -2.179 0.000
H10 -1.046 -2.794 0.000
H11 1.989 1.354 0.000
H12 1.838 -0.178 0.883
H13 1.838 -0.178 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.34202.43573.68712.49151.08661.08592.61534.11754.55112.60513.21273.2127
C21.34201.47402.50151.50822.12412.12612.17882.79433.48262.15352.15752.1575
C32.43571.47401.33962.56352.66563.44251.08972.13072.11553.48242.85712.8571
C43.68712.50151.33962.98084.00474.61422.09671.08541.08524.05542.96162.9616
C52.49151.50822.56352.98083.49222.73393.52542.68014.06601.09291.09561.0956
H61.08662.12412.66564.00473.49221.84712.37664.66264.67663.69084.14214.1421
H71.08592.12613.44254.61422.73391.84713.70094.88415.54532.38563.49553.4955
H82.61532.17881.08972.09673.52542.37663.70093.08262.42854.32583.86403.8640
H94.11752.79432.13071.08542.68014.66264.88413.08261.84343.76352.46902.4690
H104.55113.48262.11551.08524.06604.67665.54532.42851.84345.13933.99193.9919
H112.60512.15353.48244.05541.09293.69082.38564.32583.76355.13931.77461.7746
H123.21272.15752.85712.96161.09564.14213.49553.86402.46903.99191.77461.7657
H133.21272.15752.85712.96161.09564.14213.49553.86402.46903.99191.77461.7657

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 119.675 C1 C2 C5 121.781
C2 C1 H6 121.640 C2 C1 H7 121.894
C2 C3 C4 125.451 C2 C3 H8 115.580
C2 C5 H11 110.762 C2 C5 H12 110.923
C2 C5 H13 110.923 C3 C2 C5 118.543
C3 C4 H9 122.613 C3 C4 H10 121.129
C4 C3 H8 118.968 H6 C1 H7 116.467
H9 C4 H10 116.258 H11 C5 H12 108.363
H11 C5 H13 108.363 H12 C5 H13 107.386
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability