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All results from a given calculation for C5H8 (1,2-Pentadiene)

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 C1 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-194.612298
Energy at 298.15K-194.619675
HF Energy-193.932429
Nuclear repulsion energy156.512190
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 3277 3076 4.89      
2 A 3201 3004 3.90      
3 A 3197 3001 11.13      
4 A 3189 2993 27.55      
5 A 3187 2991 29.50      
6 A 3118 2926 18.92      
7 A 3108 2917 16.60      
8 A 3086 2897 32.32      
9 A 2102 1973 13.66      
10 A 1563 1467 4.81      
11 A 1556 1461 6.89      
12 A 1554 1459 0.43      
13 A 1535 1441 1.94      
14 A 1479 1388 4.80      
15 A 1427 1340 11.40      
16 A 1402 1316 0.82      
17 A 1330 1249 0.05      
18 A 1189 1116 0.70      
19 A 1149 1078 2.42      
20 A 1131 1062 3.62      
21 A 1060 995 0.13      
22 A 1027 964 0.45      
23 A 928 871 13.31      
24 A 894 840 44.69      
25 A 881 827 11.84      
26 A 818 768 3.46      
27 A 648 608 2.00      
28 A 532 499 4.69      
29 A 369 346 2.50      
30 A 334 313 4.81      
31 A 265 249 0.01      
32 A 155 146 0.19      
33 A 92 87 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 25391.2 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 23832.1 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 MP3/6-31G*
ABC
0.33771 0.10736 0.08546

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.385 0.497 0.000
C2 1.483 -1.027 -0.000
C3 -0.033 1.025 0.000
C4 -1.114 0.281 -0.001
C5 -2.196 -0.461 0.000
H6 1.908 0.904 -0.875
H7 1.908 0.904 0.875
H8 0.994 -1.449 0.883
H9 2.529 -1.345 0.000
H10 0.995 -1.449 -0.883
H11 -0.150 2.109 0.001
H12 -2.665 -0.781 0.927
H13 -2.667 -0.782 -0.925

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52641.51292.50783.70651.09801.09802.17202.16842.17202.22654.34664.3483
C21.52642.55102.90703.72202.16212.16211.09391.09401.09393.53564.25734.2588
C31.51292.55101.31272.62462.13232.13222.82083.49042.82101.09023.32443.3259
C42.50782.90701.31271.31193.20683.20722.86673.98932.86632.06672.09632.0965
C53.70653.72202.62461.31194.41274.41253.45484.80743.45513.28461.08661.0866
H61.09802.16212.13233.20684.41271.75043.07622.49222.52412.54085.19614.8761
H71.09802.16212.13223.20724.41251.75042.52412.49213.07622.54054.87395.1974
H82.17201.09392.82082.86673.45483.07622.52411.77371.76643.84063.72054.1379
H92.16841.09403.49043.98934.80742.49222.49211.77371.77374.37185.30665.3082
H102.17201.09392.82102.86633.45512.52413.07621.76641.77373.84094.13733.7225
H112.22653.53561.09022.06673.28462.54082.54053.84064.37183.84093.94143.9430
H124.34664.25733.32442.09631.08665.19614.87393.72055.30664.13733.94141.8514
H134.34834.25883.32592.09651.08664.87615.19744.13795.30823.72253.94301.8514

picture of 1,2-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H8 110.891 C1 C2 H9 110.600
C1 C2 H10 110.893 C1 C3 C4 124.980
C1 C3 H11 116.658 C2 C1 C3 114.137
C2 C1 H6 109.865 C2 C1 H7 109.863
C3 C1 H6 108.466 C3 C1 H7 108.456
C3 C4 C5 179.820 C4 C3 H11 118.362
C4 C5 H12 121.574 C4 C5 H13 121.592
H6 C1 H7 105.699 H8 C2 H9 108.333
H8 C2 H10 107.682 H9 C2 H10 108.333
H12 C5 H13 116.834
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability