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 (1,4-Pentadiene)

using model chemistry: B3LYP/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 B3LYP/6-31G*
 hartrees
Energy at 0K-195.297767
Energy at 298.15K-195.305281
Nuclear repulsion energy154.876691
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 B3LYP/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 3235 3107 19.49      
2 A 3159 3033 1.45      
3 A 3149 3024 10.04      
4 A 3022 2902 24.63      
5 A 1736 1667 0.62      
6 A 1503 1443 5.07      
7 A 1470 1412 0.04      
8 A 1332 1280 0.01      
9 A 1276 1225 0.09      
10 A 1094 1051 1.47      
11 A 1037 996 8.76      
12 A 943 905 35.99      
13 A 918 881 4.34      
14 A 680 653 7.70      
15 A 373 358 0.44      
16 A 300 288 0.09      
17 A 90 86 0.01      
18 A 3235 3107 24.21      
19 A 3158 3033 10.91      
20 A 3149 3024 32.46      
21 A 3061 2939 18.24      
22 A 1722 1654 17.48      
23 A 1472 1414 2.44      
24 A 1345 1292 0.52      
25 A 1319 1267 7.48      
26 A 1179 1133 2.79      
27 A 1039 998 12.73      
28 A 972 933 2.25      
29 A 941 904 33.74      
30 A 906 870 8.56      
31 A 615 590 9.70      
32 A 455 437 2.91      
33 A 105 101 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 24994.5 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 24002.2 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 B3LYP/6-31G*
ABC
0.66552 0.07781 0.07721

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/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 0.962 2.177 -0.177
C5 -0.962 -2.177 -0.177
H6 -0.884 -0.009 1.319
H7 0.884 0.009 1.319
H8 -0.859 1.374 -0.839
H9 0.859 -1.374 -0.839
H10 0.912 3.058 -0.812
H11 -0.912 -3.058 -0.812
H12 1.838 2.089 0.463
H13 -1.838 -2.089 0.463

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51081.51082.52452.52451.09941.09942.21102.21103.51583.51582.78962.7896
C21.51082.50751.33323.56292.14862.13801.09072.84282.11824.45202.11803.8680
C31.51082.50753.56291.33322.13802.14862.84281.09074.45202.11823.86802.1180
C42.52451.33323.56294.75983.22852.63512.09743.61371.08685.59571.08855.1425
C52.52453.56291.33324.75982.63513.22853.61372.09745.59571.08685.14251.0885
H61.09942.14862.13803.22852.63511.76762.56323.09154.14343.71953.54132.4430
H71.09942.13802.14862.63513.22851.76763.09152.56323.71954.14342.44303.5413
H82.21101.09072.84282.09743.61372.56323.09153.24152.44354.43213.07903.8269
H92.21102.84281.09073.61372.09743.09152.56323.24154.43212.44353.82693.0790
H103.51582.11824.45201.08685.59574.14343.71952.44354.43216.38111.84985.9725
H113.51584.45202.11825.59571.08683.71954.14344.43212.44356.38115.97251.8498
H122.78962.11803.86801.08855.14253.54132.44303.07903.82691.84985.97255.5645
H132.78963.86802.11805.14251.08852.44303.54133.82693.07905.97251.84985.5645

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 125.047 C1 C2 H8 115.450
C1 C3 C5 125.047 C1 C3 H9 115.450
C2 C1 C3 112.171 C2 C1 H6 109.798
C2 C1 H7 108.967 C2 C4 H10 121.825
C2 C4 H12 121.667 C3 C1 H6 108.967
C3 C1 H7 109.798 C3 C5 H11 121.825
C3 C5 H13 121.667 C4 C2 H8 119.495
C5 C3 H9 119.495 H6 C1 H7 107.005
H10 C4 H12 116.508 H11 C5 H13 116.508
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.351 0.207   0.031
2 C -0.041 -0.091   -0.078
3 C -0.041 -0.091   -0.088
4 C -0.340 -0.373   -0.445
5 C -0.340 -0.373   -0.450
6 H 0.148 -0.016   0.044
7 H 0.148 -0.016   0.048
8 H 0.132 0.086   0.117
9 H 0.132 0.086   0.122
10 H 0.140 0.143   0.169
11 H 0.140 0.143   0.172
12 H 0.135 0.147   0.177
13 H 0.135 0.147   0.181


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 0.066 0.066
CHELPG 0.000 0.000 0.097 0.097
AIM        
ESP 0.009 -0.003 0.088 0.088


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x 0.896 0.787 0.000
y 0.787 -0.229 0.000
z 0.000 0.000 -0.667
Traceless
 xyz
x 1.345 0.787 0.000
y 0.787 -0.344 0.000
z 0.000 0.000 -1.000
Polar
3z2-r2-2.001
x2-y21.126
xy0.787
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.878 3.100 0.000
y 3.100 9.986 0.000
z 0.000 0.000 5.393


<r2> (average value of r2) Å2
<r2> 159.099
(<r2>)1/2 12.613