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, (E)-)

using model chemistry: B3LYP/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3LYP/CEP-121G*
 hartrees
Energy at 0K-33.035932
Energy at 298.15K-33.043299
Nuclear repulsion energy82.982585
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/CEP-121G*
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 3210 3112 26.12      
2 A 3123 3028 25.56      
3 A 3119 3024 53.97      
4 A 3110 3015 16.20      
5 A 3105 3010 3.86      
6 A 3085 2990 11.60      
7 A 2999 2907 52.40      
8 A 1693 1641 17.71      
9 A 1644 1594 8.02      
10 A 1501 1455 9.06      
11 A 1448 1404 1.91      
12 A 1419 1375 4.16      
13 A 1324 1283 3.04      
14 A 1308 1268 0.71      
15 A 1287 1247 2.58      
16 A 1194 1158 1.46      
17 A 1084 1051 0.23      
18 A 978 948 8.92      
19 A 898 871 5.69      
20 A 473 459 0.01      
21 A 445 431 0.52      
22 A 194 188 1.83      
23 A 3044 2951 34.76      
24 A 1490 1444 7.45      
25 A 1058 1025 1.98      
26 A 1039 1008 45.52      
27 A 975 945 10.30      
28 A 908 880 49.32      
29 A 835 810 6.97      
30 A 643 624 2.06      
31 A 258 250 2.25      
32 A 209 202 0.17      
33 A 139 135 1.22      

Unscaled Zero Point Vibrational Energy (zpe) 24619.3 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 23866.0 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/CEP-121G*
ABC
0.94660 0.07069 0.06660

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.372 1.029 0.000
C2 -1.453 0.040 0.000
C3 0.000 0.255 0.000
C4 0.911 -0.743 0.000
C5 2.411 -0.552 0.000
H6 -2.079 2.080 0.000
H7 -3.439 0.817 0.000
H8 -1.789 -1.000 0.000
H9 0.343 1.295 0.000
H10 0.552 -1.777 0.000
H11 2.682 0.511 0.000
H12 2.870 -1.023 0.882
H13 2.870 -1.023 -0.882

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.35022.49463.73055.03681.09061.08842.11152.72714.05295.07985.69785.6978
C21.35021.46852.48993.90842.13402.13261.09342.19012.70604.16114.53824.5382
C32.49461.46851.35162.54232.76633.48442.18571.09422.10632.69393.26343.2634
C43.73052.48991.35161.51194.11234.62102.71222.11551.09432.16992.16682.1668
C55.03683.90842.54231.51195.20446.00754.22362.77242.22581.09681.10031.1003
H61.09062.13402.76634.11235.20441.85623.09402.54604.66945.01285.90785.9078
H71.08842.13263.48444.62106.00751.85622.45413.81164.76006.12826.63076.6307
H82.11151.09342.18572.71224.22363.09402.45413.13212.46704.71934.74214.7421
H92.72712.19011.09422.11552.77242.54603.81163.13213.07882.46693.54073.5407
H104.05292.70602.10631.09432.22584.66944.76002.46703.07883.12552.59212.5921
H115.07984.16112.69392.16991.09685.01286.12824.71932.46693.12551.77921.7792
H125.69784.53823.26342.16681.10035.90786.63074.74213.54072.59211.77921.7638
H135.69784.53823.26342.16681.10035.90786.63074.74213.54072.59211.77921.7638

picture of 1,3-Pentadiene, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 124.460 C1 C2 H8 119.190
C2 C1 H6 121.561 C2 C1 H7 121.612
C2 C3 C4 123.942 C2 C3 H9 116.679
C3 C2 H8 116.350 C3 C4 C5 125.104
C3 C4 H10 118.506 C4 C3 H9 119.378
C4 C5 H11 111.576 C4 C5 H12 111.113
C4 C5 H13 111.113 C5 C4 H10 116.389
H6 C1 H7 116.827 H11 C5 H12 108.146
H11 C5 H13 108.146 H12 C5 H13 106.546
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.549      
2 C 0.054      
3 C -0.119      
4 C -0.117      
5 C -0.605      
6 H 0.164      
7 H 0.158      
8 H 0.161      
9 H 0.165      
10 H 0.169      
11 H 0.178      
12 H 0.171      
13 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.581 -0.285 0.000 0.647
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.759 -0.062 0.000
y -0.062 -29.364 0.000
z 0.000 0.000 -35.363
Traceless
 xyz
x 2.604 -0.062 0.000
y -0.062 3.198 0.000
z 0.000 0.000 -5.802
Polar
3z2-r2-11.604
x2-y2-0.395
xy-0.062
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 14.368 -3.602 0.000
y -3.602 9.806 0.000
z 0.000 0.000 5.140


<r2> (average value of r2) Å2
<r2> 143.283
(<r2>)1/2 11.970