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 (2,3-Pentadiene)

using model chemistry: PBEPBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/cc-pVTZ
 hartrees
Energy at 0K-195.084584
Energy at 298.15K-195.091509
Nuclear repulsion energy151.799226
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/cc-pVTZ
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 3060 3039 12.57      
2 A 3033 3012 4.32      
3 A 3006 2985 17.61      
4 A 2957 2937 7.21      
5 A 1464 1454 3.54      
6 A 1430 1421 5.58      
7 A 1396 1387 0.16      
8 A 1350 1340 2.59      
9 A 1135 1127 0.07      
10 A 1054 1047 1.49      
11 A 1016 1009 0.02      
12 A 867 861 22.15      
13 A 805 800 0.00      
14 A 524 520 4.14      
15 A 285 283 1.13      
16 A 174 173 0.00      
17 A 133 132 1.95      
18 A 3060 3039 27.70      
19 A 3031 3010 5.11      
20 A 3006 2985 17.37      
21 A 2956 2936 69.52      
22 A 2006 1992 12.12      
23 A 1440 1430 10.21      
24 A 1430 1420 5.90      
25 A 1346 1337 4.40      
26 A 1264 1255 21.30      
27 A 1066 1059 1.63      
28 A 1012 1005 0.56      
29 A 939 932 18.27      
30 A 681 676 16.64      
31 A 553 549 13.42      
32 A 219 217 0.73      
33 A 156 155 1.59      

Unscaled Zero Point Vibrational Energy (zpe) 23926.3 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 23761.2 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/cc-pVTZ
ABC
0.57924 0.07386 0.07146

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.411
C2 0.000 1.311 0.410
C3 0.000 -1.311 0.410
C4 -0.872 2.181 -0.458
C5 0.872 -2.181 -0.458
H6 0.684 1.829 1.093
H7 -0.684 -1.829 1.093
H8 -1.509 2.835 0.157
H9 -0.261 2.840 -1.095
H10 -1.520 1.578 -1.105
H11 1.509 -2.835 0.157
H12 0.261 -2.840 -1.095
H13 1.520 -1.578 -1.105

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.31141.31142.50452.50452.06872.06873.22213.22482.66403.22213.22482.6640
C21.31142.62291.50663.70291.09673.28622.15972.16052.16244.42014.42313.5989
C31.31142.62293.70291.50663.28621.09674.42014.42313.59892.15972.16052.1624
C42.50451.50663.70294.69792.22504.30401.10121.10111.09665.58695.18624.5019
C52.50453.70291.50664.69794.30402.22505.58695.18624.50191.10121.10111.0966
H62.06871.09673.28622.22504.30403.90602.58822.58873.12284.82875.17354.1399
H72.06873.28621.09674.30402.22503.90604.82875.17354.13992.58822.58873.1228
H83.22212.15974.42011.10125.58692.58824.82871.76801.78206.42416.07515.4994
H93.22482.16054.42311.10115.18622.58875.17351.76801.78226.07515.70324.7627
H102.66402.16243.59891.09664.50193.12284.13991.78201.78225.49944.76274.3810
H113.22214.42012.15975.58691.10124.82872.58826.42416.07515.49941.76801.7820
H123.22484.42312.16055.18621.10115.17352.58876.07515.70324.76271.76801.7822
H132.66403.59892.16244.50191.09664.13993.12285.49944.76274.38101.78201.7822

picture of 2,3-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 125.287 C1 C2 H6 118.145
C1 C3 C5 125.287 C1 C3 H7 118.145
C2 C1 C3 179.909 C2 C4 H8 110.864
C2 C4 H9 110.935 C2 C4 H10 111.361
C3 C5 H11 110.864 C3 C5 H12 110.935
C3 C5 H13 111.361 C4 C2 H6 116.568
C5 C3 H7 116.568 H8 C4 H9 106.789
H8 C4 H10 108.351 H9 C4 H10 108.379
H11 C5 H12 106.789 H11 C5 H13 108.351
H12 C5 H13 108.379
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.022      
2 C -0.167      
3 C -0.167      
4 C -0.252      
5 C -0.252      
6 H 0.109      
7 H 0.109      
8 H 0.100      
9 H 0.099      
10 H 0.099      
11 H 0.100      
12 H 0.099      
13 H 0.099      


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 -0.222 0.222
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.363 -0.236 0.000
y -0.236 -28.154 0.000
z 0.000 0.000 -32.558
Traceless
 xyz
x -2.007 -0.236 0.000
y -0.236 4.306 0.000
z 0.000 0.000 -2.300
Polar
3z2-r2-4.599
x2-y2-4.209
xy-0.236
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.345 -1.307 0.000
y -1.307 14.982 0.000
z 0.000 0.000 7.195


<r2> (average value of r2) Å2
<r2> 173.175
(<r2>)1/2 13.160