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: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-194.633246
Energy at 298.15K-194.640638
HF Energy-193.954995
Nuclear repulsion energy155.315244
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' 3295 3093 16.45      
2 A' 3231 3033 18.96      
3 A' 3216 3019 29.68      
4 A' 3208 3011 5.16      
5 A' 3200 3003 9.17      
6 A' 3189 2993 0.83      
7 A' 3097 2907 21.29      
8 A' 1790 1680 3.67      
9 A' 1717 1612 1.09      
10 A' 1554 1459 6.44      
11 A' 1519 1426 9.52      
12 A' 1478 1388 3.47      
13 A' 1438 1350 0.77      
14 A' 1363 1279 1.06      
15 A' 1330 1249 0.70      
16 A' 1226 1150 1.12      
17 A' 1097 1029 0.06      
18 A' 994 933 7.92      
19 A' 919 862 0.88      
20 A' 626 588 4.51      
21 A' 396 371 3.03      
22 A' 230 216 0.25      
23 A" 3155 2961 19.79      
24 A" 1543 1448 6.41      
25 A" 1097 1030 0.98      
26 A" 1031 967 16.32      
27 A" 981 921 3.60      
28 A" 923 866 40.29      
29 A" 802 753 10.77      
30 A" 637 598 24.91      
31 A" 353 332 0.16      
32 A" 117 110 0.01      
33 A" 103 97 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 25427.0 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 23865.8 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 MP3/6-31G*
ABC
0.52907 0.08778 0.07636

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.394 0.151 0.000
C2 1.106 -0.220 0.000
C3 0.000 0.741 0.000
C4 -1.313 0.455 0.000
C5 -1.956 -0.903 0.000
H6 2.686 1.198 0.000
H7 3.199 -0.577 0.000
H8 0.863 -1.280 0.000
H9 0.296 1.790 0.000
H10 -2.009 1.293 0.000
H11 -1.227 -1.716 0.000
H12 -2.597 -1.024 0.881
H13 -2.597 -1.024 -0.881

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.34022.46563.71934.47631.08711.08512.09542.66174.54874.07435.20265.2026
C21.34021.46522.51163.13792.12322.12291.08752.16673.46332.77193.89053.8905
C32.46561.46521.34352.55552.72503.45962.19771.08992.08352.74633.26123.2612
C43.71932.51161.34351.50364.06764.62832.78372.09041.08932.17322.14812.1481
C54.47633.13792.55551.50365.09625.16562.84503.51102.19741.09171.09611.0961
H61.08712.12322.72504.06765.09621.84733.07642.46214.69634.87955.79895.7989
H71.08512.12293.45964.62835.16561.84732.43903.74485.53344.57065.87945.8794
H82.09541.08752.19772.78372.84503.07642.43903.12173.85672.13593.58003.5800
H92.66172.16671.08992.09043.51102.46213.74483.12172.35823.82254.13104.1310
H104.54873.46332.08351.08932.19744.69635.53343.85672.35823.10922.54812.5481
H114.07432.77192.74632.17321.09174.87954.57062.13593.82253.10921.76941.7694
H125.20263.89053.26122.14811.09615.79895.87943.58004.13102.54811.76941.7624
H135.20263.89053.26122.14811.09615.79895.87943.58004.13102.54811.76941.7624

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 122.949 C1 C2 H8 118.965
C2 C1 H6 121.676 C2 C1 H7 121.809
C2 C3 C4 126.763 C2 C3 H9 115.195
C3 C2 H8 118.086 C3 C4 C5 127.601
C3 C4 H10 117.457 C4 C3 H9 118.042
C4 C5 H11 112.765 C4 C5 H12 110.467
C4 C5 H13 110.467 C5 C4 H10 114.942
H6 C1 H7 116.515 H11 C5 H12 107.954
H11 C5 H13 107.954 H12 C5 H13 107.019
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability