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All results from a given calculation for C5H8 (1,4-Pentadiene)

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-194.582206
Energy at 298.15K-194.589750
HF Energy-193.946683
Nuclear repulsion energy155.295706
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 MP2/6-31G*
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 3302 3114 13.06      
2 A 3215 3032 1.86      
3 A 3203 3021 6.34      
4 A 3081 2906 18.80      
5 A 1733 1635 0.42      
6 A 1538 1450 6.29      
7 A 1493 1408 0.02      
8 A 1348 1271 0.03      
9 A 1296 1222 0.07      
10 A 1111 1047 1.50      
11 A 1037 978 15.46      
12 A 941 888 4.38      
13 A 932 879 37.16      
14 A 690 651 8.47      
15 A 377 355 0.38      
16 A 308 290 0.18      
17 A 88 83 0.02      
18 B 3302 3114 16.32      
19 B 3214 3031 7.51      
20 B 3203 3021 20.79      
21 B 3135 2956 13.40      
22 B 1724 1625 9.47      
23 B 1497 1411 2.97      
24 B 1359 1282 0.07      
25 B 1335 1259 3.26      
26 B 1207 1138 2.70      
27 B 1038 979 18.25      
28 B 998 942 2.65      
29 B 931 878 33.67      
30 B 921 868 8.25      
31 B 616 581 10.93      
32 B 461 434 2.25      
33 B 99 93 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25365.6 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 23919.8 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 MP2/6-31G*
ABC
0.64489 0.07916 0.07855

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.671
C2 0.000 1.241 -0.177
C3 0.000 -1.241 -0.177
C4 0.976 2.158 -0.180
C5 -0.976 -2.158 -0.180
H6 -0.884 -0.009 1.322
H7 0.884 0.009 1.322
H8 -0.860 1.367 -0.835
H9 0.860 -1.367 -0.835
H10 0.933 3.035 -0.817
H11 -0.933 -3.035 -0.817
H12 1.850 2.061 0.459
H13 -1.850 -2.061 0.459

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.50341.50342.51632.51631.09811.09812.20792.20793.50663.50662.77782.7778
C21.50342.48301.33843.53632.14302.13291.09012.82392.12064.42372.12083.8386
C31.50342.48303.53631.33842.13292.14302.82391.09014.42372.12063.83862.1208
C42.51631.33843.53634.73583.22632.62372.10353.58621.08515.56881.08685.1177
C52.51633.53631.33844.73582.62373.22633.58622.10355.56881.08515.11771.0868
H61.09812.14302.13293.22632.62371.76782.55843.08864.14033.70663.53622.4276
H71.09812.13292.14302.62373.22631.76783.08862.55843.70664.14032.42763.5362
H82.20791.09012.82392.10353.58622.55843.08863.22942.44944.40233.08223.7951
H92.20792.82391.09013.58622.10353.08862.55843.22944.40232.44943.79513.0822
H103.50662.12064.42371.08515.56884.14033.70662.44944.40236.35051.84815.9451
H113.50664.42372.12065.56881.08513.70664.14034.40232.44946.35055.94511.8481
H122.77782.12083.83861.08685.11773.53622.42763.08223.79511.84815.94515.5394
H132.77783.83862.12085.11771.08682.42763.53623.79513.08225.94511.84815.5394

picture of 1,4-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 124.514 C1 C2 H8 115.790
C1 C3 C5 124.514 C1 C3 H9 115.790
C2 C1 C3 111.336 C2 C1 H6 109.947
C2 C1 H7 109.151 C2 C4 H10 121.749
C2 C4 H12 121.624 C3 C1 H6 109.151
C3 C1 H7 109.947 C3 C5 H11 121.749
C3 C5 H13 121.624 C4 C2 H8 119.688
C5 C3 H9 119.688 H6 C1 H7 107.218
H10 C4 H12 116.627 H11 C5 H13 116.627
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability