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

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-195.026434
Energy at 298.15K-195.033808
Nuclear repulsion energy154.330160
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 PBEPBE/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 3173 3130 15.71      
2 A 3089 3047 2.93      
3 A 3080 3038 7.56      
4 A 2956 2915 21.29      
5 A 1683 1660 0.80      
6 A 1432 1413 6.17      
7 A 1406 1387 0.04      
8 A 1281 1263 0.03      
9 A 1225 1208 0.10      
10 A 1055 1040 0.95      
11 A 999 985 9.52      
12 A 898 886 28.93      
13 A 890 877 9.57      
14 A 662 653 8.19      
15 A 362 357 0.42      
16 A 290 286 0.10      
17 A 85 84 0.01      
18 A 3173 3130 19.61      
19 A 3089 3046 10.11      
20 A 3080 3037 27.05      
21 A 3004 2963 14.35      
22 A 1668 1645 21.13      
23 A 1410 1391 2.78      
24 A 1290 1272 0.24      
25 A 1257 1240 5.16      
26 A 1138 1123 3.85      
27 A 1000 986 13.67      
28 A 950 937 2.66      
29 A 896 884 32.52      
30 A 868 856 10.32      
31 A 595 587 10.52      
32 A 442 436 3.04      
33 A 101 100 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 24262.6 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 23930.2 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 PBEPBE/6-31G**
ABC
0.66074 0.07742 0.07684

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.665
C2 0.000 1.254 -0.178
C3 0.000 -1.254 -0.178
C4 0.968 2.182 -0.176
C5 -0.968 -2.182 -0.176
H6 -0.890 -0.010 1.323
H7 0.890 0.010 1.323
H8 -0.864 1.374 -0.846
H9 0.864 -1.374 -0.846
H10 0.918 3.069 -0.815
H11 -0.918 -3.069 -0.815
H12 1.847 2.090 0.471
H13 -1.847 -2.090 0.471

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51121.51122.53122.53121.10671.10672.21752.21753.52853.52852.79662.7966
C21.51122.50721.34133.56942.15522.14311.09822.84522.13114.46422.12963.8753
C31.51122.50723.56941.34132.14312.15522.84521.09824.46422.13113.87532.1296
C42.53121.34133.56944.77423.24152.64032.11123.61981.09385.61541.09585.1575
C52.53123.56941.34134.77422.64033.24153.61982.11125.61541.09385.15751.0958
H61.10672.15522.14313.24152.64031.78002.57323.10484.16183.73173.55432.4434
H71.10672.14312.15522.64033.24151.78003.10482.57323.73174.16182.44343.5543
H82.21751.09822.84522.11123.61982.57323.10483.24592.45924.44283.09823.8344
H92.21752.84521.09823.61982.11123.10482.57323.24594.44282.45923.83443.0982
H103.52852.13114.46421.09385.61544.16183.73172.45924.44286.40571.86405.9930
H113.52854.46422.13115.61541.09383.73174.16184.44282.45926.40575.99301.8640
H122.79662.12963.87531.09585.15753.55432.44343.09823.83441.86405.99305.5796
H132.79663.87532.12965.15751.09582.44343.55433.83443.09825.99301.86405.5796

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 124.982 C1 C2 H8 115.474
C1 C3 C5 124.982 C1 C3 H9 115.474
C2 C1 C3 112.104 C2 C1 H6 109.859
C2 C1 H7 108.915 C2 C4 H10 121.802
C2 C4 H12 121.488 C3 C1 H6 108.915
C3 C1 H7 109.859 C3 C5 H11 121.802
C3 C5 H13 121.488 C4 C2 H8 119.534
C5 C3 H9 119.534 H6 C1 H7 107.061
H10 C4 H12 116.709 H11 C5 H13 116.709
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.296      
2 C -0.029      
3 C -0.029      
4 C -0.267      
5 C -0.267      
6 H 0.125      
7 H 0.125      
8 H 0.104      
9 H 0.104      
10 H 0.111      
11 H 0.111      
12 H 0.105      
13 H 0.105      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.084 0.084
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.381 0.807 0.000
y 0.807 -31.455 0.000
z 0.000 0.000 -31.883
Traceless
 xyz
x 1.288 0.807 0.000
y 0.807 -0.323 0.000
z 0.000 0.000 -0.965
Polar
3z2-r2-1.931
x2-y21.074
xy0.807
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.081 3.150 0.000
y 3.150 10.475 0.000
z 0.000 0.000 5.642


<r2> (average value of r2) Å2
<r2> 159.801
(<r2>)1/2 12.641