return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H8 (1,3-Pentadiene, (Z)-)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G
 hartrees
Energy at 0K-194.336309
Energy at 298.15K-194.343631
HF Energy-193.881459
Nuclear repulsion energy153.896697
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=FULL/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' 3259 3096 23.87      
2 A' 3180 3021 35.44      
3 A' 3171 3013 27.88      
4 A' 3161 3003 9.14      
5 A' 3150 2993 12.77      
6 A' 3135 2979 3.89      
7 A' 3053 2900 26.10      
8 A' 1715 1629 2.24      
9 A' 1651 1568 1.00      
10 A' 1568 1490 5.98      
11 A' 1521 1445 6.30      
12 A' 1489 1414 5.80      
13 A' 1445 1372 0.81      
14 A' 1369 1301 0.53      
15 A' 1338 1271 0.74      
16 A' 1222 1161 1.93      
17 A' 1101 1046 0.31      
18 A' 990 941 7.18      
19 A' 902 857 0.83      
20 A' 629 598 4.22      
21 A' 395 376 2.37      
22 A' 226 215 0.14      
23 A" 3116 2961 25.81      
24 A" 1554 1477 6.67      
25 A" 1115 1059 0.68      
26 A" 1013 962 22.38      
27 A" 965 917 6.17      
28 A" 916 870 40.76      
29 A" 786 746 14.10      
30 A" 625 594 27.32      
31 A" 346 329 0.21      
32 A" 101 96 0.01      
33 A" 87 82 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 25146.0 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 23891.3 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=FULL/6-31G
ABC
0.52121 0.08591 0.07479

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.422 0.156 0.000
C2 1.115 -0.217 0.000
C3 0.000 0.747 0.000
C4 -1.331 0.458 0.000
C5 -1.976 -0.916 0.000
H6 2.717 1.206 0.000
H7 3.229 -0.575 0.000
H8 0.875 -1.282 0.000
H9 0.293 1.802 0.000
H10 -2.033 1.296 0.000
H11 -1.233 -1.723 0.000
H12 -2.615 -1.046 0.886
H13 -2.615 -1.046 -0.886

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.35862.49293.76494.52601.09151.08872.11192.69144.59864.10965.25365.2536
C21.35861.47402.53753.16892.14282.14411.09242.18013.49292.79013.92293.9229
C32.49291.47401.36222.58232.75583.48932.21021.09522.10602.76123.29253.2925
C43.76492.53751.36221.51704.11704.67572.80982.10861.09352.18322.16692.1669
C54.52603.16892.58231.51705.15045.21602.87433.54042.21221.09721.10061.1006
H61.09152.14282.75584.11705.15041.85313.09632.49654.75144.91825.85615.8561
H71.08872.14413.48934.67575.21601.85312.45823.77785.58504.60795.93005.9300
H82.11191.09242.21022.80982.87433.09632.45823.13933.88662.15393.60883.6088
H92.69142.18011.09522.10863.54042.49653.77783.13932.38083.84194.16624.1662
H104.59863.49292.10601.09352.21224.75145.58503.88662.38083.12342.57072.5707
H114.10962.79012.76122.18321.09724.91824.60792.15393.84193.12341.77601.7760
H125.25363.92293.29252.16691.10065.85615.93003.60884.16622.57071.77601.7723
H135.25363.92293.29252.16691.10065.85615.93003.60884.16622.57071.77601.7723

picture of 1,3-Pentadiene, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 123.256 C1 C2 H8 118.603
C2 C1 H6 121.615 C2 C1 H7 121.967
C2 C3 C4 126.889 C2 C3 H9 115.320
C3 C2 H8 118.141 C3 C4 C5 127.419
C3 C4 H10 117.682 C4 C3 H9 117.791
C4 C5 H11 112.265 C4 C5 H12 110.748
C4 C5 H13 110.748 C5 C4 H10 114.899
H6 C1 H7 116.418 H11 C5 H12 107.815
H11 C5 H13 107.815 H12 C5 H13 107.249
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability