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All results from a given calculation for C5H8 (2,3-Pentadiene)

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-194.308738
Energy at 298.15K-194.315720
HF Energy-193.875930
Nuclear repulsion energy149.247061
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/SDD
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 3145 3036 27.94      
2 A 3131 3022 0.64      
3 A 3105 2997 32.09      
4 A 3015 2911 13.28      
5 A 1543 1490 3.50      
6 A 1524 1471 8.31      
7 A 1457 1407 4.74      
8 A 1443 1393 0.06      
9 A 1179 1138 0.19      
10 A 1119 1080 2.25      
11 A 1095 1057 0.04      
12 A 926 894 31.87      
13 A 809 781 0.01      
14 A 524 506 5.90      
15 A 294 284 0.95      
16 A 164 158 0.17      
17 A 134 129 2.86      
18 A 3147 3038 49.85      
19 A 3130 3022 14.11      
20 A 3105 2997 33.76      
21 A 3015 2910 73.96      
22 A 1996 1926 4.46      
23 A 1539 1486 11.79      
24 A 1523 1470 8.32      
25 A 1454 1404 4.54      
26 A 1350 1304 8.57      
27 A 1119 1080 7.01      
28 A 1093 1055 0.66      
29 A 970 936 9.81      
30 A 724 699 26.73      
31 A 562 543 14.15      
32 A 218 210 1.72      
33 A 148 143 1.80      

Unscaled Zero Point Vibrational Energy (zpe) 24848.9 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 23986.7 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/SDD
ABC
0.55076 0.07144 0.06905

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.428
C2 0.000 1.343 0.424
C3 0.000 -1.343 0.424
C4 -0.900 2.212 -0.473
C5 0.900 -2.212 -0.473
H6 0.681 1.874 1.105
H7 -0.681 -1.874 1.105
H8 -1.550 2.861 0.141
H9 -0.288 2.863 -1.124
H10 -1.540 1.578 -1.111
H11 1.550 -2.861 0.141
H12 0.288 -2.863 -1.124
H13 1.540 -1.578 -1.111

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.34281.34282.55242.55242.10532.10533.26703.26912.68893.26703.26912.6889
C21.34282.68551.54023.77511.09903.35742.18862.18892.18734.48984.49083.6415
C31.34282.68553.77511.54023.35741.09904.48984.49083.64152.18862.18892.1873
C42.55241.54023.77514.77602.25924.38521.10551.10571.10315.66755.25224.5524
C52.55243.77511.54024.77604.38522.25925.66755.25224.55241.10551.10571.1031
H62.10531.09903.35742.25924.38523.98722.62302.62363.15074.90985.24944.1909
H72.10533.35741.09904.38522.25923.98724.90985.24944.19092.62302.62363.1507
H83.26702.18864.48981.10555.66752.62304.90981.78761.79326.50876.14375.5522
H93.26912.18894.49081.10575.25222.62365.24941.78761.79376.14375.75424.8022
H102.68892.18733.64151.10314.55243.15074.19091.79321.79375.55224.80224.4097
H113.26704.48982.18865.66751.10554.90982.62306.50876.14375.55221.78761.7932
H123.26914.49082.18895.25221.10575.24942.62366.14375.75424.80221.78761.7937
H132.68893.64152.18734.55241.10314.19093.15075.55224.80224.40971.79321.7937

picture of 2,3-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 124.450 C1 C2 H6 118.792
C1 C3 C5 124.450 C1 C3 H7 118.792
C2 C1 C3 179.708 C2 C4 H8 110.552
C2 C4 H9 110.570 C2 C4 H10 110.598
C3 C5 H11 110.552 C3 C5 H12 110.570
C3 C5 H13 110.598 C4 C2 H6 116.757
C5 C3 H7 116.757 H8 C4 H9 107.883
H8 C4 H10 108.563 H9 C4 H10 108.593
H11 C5 H12 107.883 H11 C5 H13 108.563
H12 C5 H13 108.593
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability