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

using model chemistry: CISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CISD/3-21G*
 hartrees
Energy at 0K-193.295872
Energy at 298.15K-193.303549
Nuclear repulsion energy155.014732
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 CISD/3-21G*
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 3289 3073 17.27      
2 A 3223 3012 2.71      
3 A 3207 2997 3.80      
4 A 3102 2899 18.80      
5 A 1776 1660 0.15      
6 A 1584 1480 8.36      
7 A 1558 1456 0.00      
8 A 1403 1311 0.00      
9 A 1341 1253 0.00      
10 A 1150 1075 0.67      
11 A 1080 1009 11.91      
12 A 1020 954 51.59      
13 A 949 887 6.30      
14 A 703 657 8.72      
15 A 392 366 0.38      
16 A 318 298 0.50      
17 A 86 80 0.02      
18 A 3289 3073 22.20      
19 A 3222 3010 8.19      
20 A 3207 2997 21.79      
21 A 3143 2937 10.76      
22 A 1760 1645 11.09      
23 A 1553 1451 3.12      
24 A 1406 1313 0.21      
25 A 1393 1301 2.44      
26 A 1227 1147 2.73      
27 A 1081 1010 13.28      
28 A 1019 952 50.02      
29 A 985 920 1.89      
30 A 945 883 5.67      
31 A 637 595 14.42      
32 A 474 443 1.94      
33 A 90 84 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25805.4 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 24112.6 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 CISD/3-21G*
ABC
0.63917 0.07875 0.07801

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.697
C2 0.000 1.251 -0.171
C3 0.000 -1.251 -0.171
C4 0.979 2.150 -0.197
C5 -0.979 -2.150 -0.197
H6 -0.885 -0.007 1.341
H7 0.885 0.007 1.341
H8 -0.869 1.369 -0.810
H9 0.869 -1.369 -0.810
H10 0.942 3.020 -0.841
H11 -0.942 -3.020 -0.841
H12 1.860 2.054 0.427
H13 -1.860 -2.054 0.427

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52241.52242.52622.52621.09511.09512.21392.21393.51733.51732.78432.7843
C21.52242.50231.32963.53952.15672.14891.08562.83402.11324.42482.11243.8394
C31.52242.50233.53951.32962.14892.15672.83401.08564.42482.11323.83942.1124
C42.52621.32963.53954.72533.23982.64012.09803.57411.08245.55301.08415.1115
C52.52623.53951.32964.72532.64013.23983.57412.09805.55301.08245.11151.0841
H61.09512.15672.14893.23982.64011.77102.55383.09254.15473.72053.55272.4448
H71.09512.14892.15672.64013.23981.77103.09252.55383.72054.15472.44483.5527
H82.21391.08562.83402.09803.57412.55383.09253.24372.45084.38993.07393.7725
H92.21392.83401.08563.57412.09803.09252.55383.24374.38992.45083.77253.0739
H103.51732.11324.42481.08245.55304.15473.72052.45084.38996.32701.83925.9334
H113.51734.42482.11325.55301.08243.72054.15474.38992.45086.32705.93341.8392
H122.78432.11243.83941.08415.11153.55272.44483.07393.77251.83925.93345.5424
H132.78433.83942.11245.11151.08412.44483.55273.77253.07395.93341.83925.5424

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 124.553 C1 C2 H8 115.163
C1 C3 C5 124.553 C1 C3 H9 115.163
C2 C1 C3 110.537 C2 C1 H6 109.894
C2 C1 H7 109.278 C2 C4 H10 122.013
C2 C4 H12 121.799 C3 C1 H6 109.278
C3 C1 H7 109.894 C3 C5 H11 122.013
C3 C5 H13 121.799 C4 C2 H8 120.273
C5 C3 H9 120.273 H6 C1 H7 107.916
H10 C4 H12 116.188 H11 C5 H13 116.188
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CISD/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.512      
2 C -0.198      
3 C -0.198      
4 C -0.419      
5 C -0.419      
6 H 0.229      
7 H 0.229      
8 H 0.229      
9 H 0.229      
10 H 0.211      
11 H 0.211      
12 H 0.204      
13 H 0.204      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000