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

using model chemistry: MP2/TZVP

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/TZVP
 hartrees
Energy at 0K-194.717252
Energy at 298.15K-194.724234
HF Energy-194.001407
Nuclear repulsion energy157.408848
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/TZVP
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 3187 3021 18.58      
2 A1 3177 3012 5.09      
3 A1 3069 2910 48.59      
4 A1 2053 1946 16.31      
5 A1 1538 1458 0.01      
6 A1 1498 1420 2.99      
7 A1 1437 1362 0.83      
8 A1 1330 1261 12.13      
9 A1 1042 988 5.21      
10 A1 744 705 0.03      
11 A1 342 324 0.05      
12 A2 3140 2976 0.00      
13 A2 1488 1410 0.00      
14 A2 1017 964 0.00      
15 A2 629 596 0.00      
16 A2 141 134 0.00      
17 B1 3264 3094 2.48      
18 B1 3140 2976 37.86      
19 B1 1504 1425 16.12      
20 B1 1106 1048 0.47      
21 B1 1025 972 0.60      
22 B1 404 383 0.50      
23 B1 245 232 5.76      
24 B1 170 161 1.67      
25 B2 3186 3020 14.37      
26 B2 3068 2908 18.92      
27 B2 1511 1432 5.91      
28 B2 1420 1346 4.12      
29 B2 1239 1175 4.89      
30 B2 986 935 0.05      
31 B2 844 800 53.68      
32 B2 592 561 11.01      
33 B2 178 168 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 24855.8 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 23560.8 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/TZVP
ABC
0.27737 0.12058 0.08832

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.241
C2 0.000 0.000 0.931
H3 -0.926 0.000 2.803
H4 0.926 0.000 2.803
C5 0.000 0.000 -0.379
C6 0.000 1.282 -1.172
C7 0.000 -1.282 -1.172
H8 0.000 2.155 -0.521
H9 0.000 -2.155 -0.521
H10 0.881 1.328 -1.817
H11 -0.881 1.328 -1.817
H12 -0.881 -1.328 -1.817
H13 0.881 -1.328 -1.817

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.31001.08331.08332.62083.64583.64583.50333.50334.35984.35984.35984.3598
C21.31002.08832.08831.31082.46302.46302.59842.59843.17673.17673.17673.1767
H31.08332.08831.85263.31454.27784.27784.06814.06815.13534.80704.80705.1353
H41.08332.08831.85263.31454.27784.27784.06814.06814.80705.13535.13534.8070
C52.62081.31083.31453.31451.50711.50712.15942.15942.14612.14612.14612.1461
C63.64582.46304.27784.27781.50712.56411.08863.49791.09291.09292.82942.8294
C73.64582.46304.27784.27781.50712.56413.49791.08862.82942.82941.09291.0929
H83.50332.59844.06814.06812.15941.08863.49794.30951.77161.77163.81913.8191
H93.50332.59844.06814.06812.15943.49791.08864.30953.81913.81911.77161.7716
H104.35983.17675.13534.80702.14611.09292.82941.77163.81911.76223.18762.6562
H114.35983.17674.80705.13532.14611.09292.82941.77163.81911.76222.65623.1876
H124.35983.17674.80705.13532.14612.82941.09293.81911.77163.18762.65621.7622
H134.35983.17675.13534.80702.14612.82941.09293.81911.77162.65623.18761.7622

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 121.230
C2 C1 H4 121.230 C2 C5 C6 121.713
C2 C5 C7 121.713 H3 C1 H4 117.540
C5 C6 H8 111.577 C5 C6 H10 110.247
C5 C6 H11 110.247 C5 C7 H9 111.577
C5 C7 H12 110.247 C5 C7 H13 110.247
C6 C5 C7 116.575 H8 C6 H10 108.603
H8 C6 H11 108.603 H9 C7 H12 108.603
H9 C7 H13 108.603 H10 C6 H11 107.449
H12 C7 H13 107.449
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability