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

using model chemistry: CID/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 CID/3-21G*
 hartrees
Energy at 0K-193.293642
Energy at 298.15K-193.301323
Nuclear repulsion energy155.068555
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 CID/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 3293 3064 17.09      
2 A 3227 3003 2.69      
3 A 3211 2988 3.82      
4 A 3106 2891 18.56      
5 A 1781 1657 0.15      
6 A 1586 1476 8.48      
7 A 1559 1451 0.00      
8 A 1404 1307 0.00      
9 A 1342 1249 0.00      
10 A 1151 1071 0.64      
11 A 1081 1006 11.71      
12 A 1022 951 51.88      
13 A 950 884 6.38      
14 A 704 655 8.83      
15 A 392 365 0.37      
16 A 319 297 0.51      
17 A 86 80 0.03      
18 A 3293 3064 21.96      
19 A 3226 3002 8.11      
20 A 3212 2988 21.54      
21 A 3147 2929 10.71      
22 A 1765 1642 10.54      
23 A 1555 1447 3.26      
24 A 1407 1310 0.25      
25 A 1394 1297 2.17      
26 A 1229 1143 2.71      
27 A 1082 1006 13.05      
28 A 1020 949 50.36      
29 A 986 918 1.81      
30 A 947 881 5.77      
31 A 637 593 14.52      
32 A 474 441 1.93      
33 A 90 84 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25839.3 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 24043.5 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 CID/3-21G*
ABC
0.63947 0.07881 0.07807

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/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 -0.170
C3 0.000 -1.251 -0.170
C4 0.979 2.149 -0.198
C5 -0.979 -2.149 -0.198
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 3.019 -0.841
H11 -0.942 -3.019 -0.841
H12 1.860 2.053 0.426
H13 -1.860 -2.053 0.426

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52191.52192.52522.52521.09491.09492.21322.21323.51623.51622.78352.7835
C21.52192.50171.32893.53832.15612.14841.08542.83342.11244.42342.11173.8382
C31.52192.50173.53831.32892.14842.15612.83341.08544.42342.11243.83822.1117
C42.52521.32893.53834.72333.23882.63932.09723.57281.08225.55081.08395.1096
C52.52523.53831.32894.72332.63933.23883.57282.09725.55081.08225.10961.0839
H61.09492.15612.14843.23882.63931.77052.55303.09174.15353.71963.55182.4443
H71.09492.14842.15612.63933.23881.77053.09172.55303.71964.15352.44433.5518
H82.21321.08542.83342.09723.57282.55303.09173.24332.45004.38873.07303.7711
H92.21322.83341.08543.57282.09723.09172.55303.24334.38872.45003.77113.0730
H103.51622.11244.42341.08225.55084.15353.71962.45004.38876.32471.83875.9313
H113.51624.42342.11245.55081.08223.71964.15354.38872.45006.32475.93131.8387
H122.78352.11173.83821.08395.10963.55182.44433.07303.77111.83875.93135.5407
H132.78353.83822.11175.10961.08392.44433.55183.77113.07305.93131.83875.5407

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 124.561 C1 C2 H8 115.155
C1 C3 C5 124.561 C1 C3 H9 115.155
C2 C1 C3 110.553 C2 C1 H6 109.892
C2 C1 H7 109.282 C2 C4 H10 122.020
C2 C4 H12 121.809 C3 C1 H6 109.282
C3 C1 H7 109.892 C3 C5 H11 122.020
C3 C5 H13 121.809 C4 C2 H8 120.272
C5 C3 H9 120.272 H6 C1 H7 107.896
H10 C4 H12 116.171 H11 C5 H13 116.171
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at CID/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.513      
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