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 (1,2-Pentadiene)

using model chemistry: LSDA/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at LSDA/6-31+G**
 hartrees
Energy at 0K-194.183676
Energy at 298.15K-194.190903
Nuclear repulsion energy157.097187
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 LSDA/6-31+G**
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 3143 3096 0.31      
2 A 3079 3032 19.13      
3 A 3070 3024 3.41      
4 A 3066 3020 2.00      
5 A 3066 3020 16.47      
6 A 2988 2943 9.06      
7 A 2985 2940 17.08      
8 A 2957 2912 27.36      
9 A 2049 2018 41.64      
10 A 1441 1420 13.21      
11 A 1428 1406 1.98      
12 A 1424 1403 14.16      
13 A 1406 1385 9.38      
14 A 1355 1334 11.16      
15 A 1307 1287 7.78      
16 A 1304 1285 1.11      
17 A 1224 1205 0.01      
18 A 1128 1111 5.04      
19 A 1065 1049 1.00      
20 A 1050 1034 2.82      
21 A 974 959 1.94      
22 A 972 958 0.01      
23 A 872 859 5.94      
24 A 864 851 17.06      
25 A 826 814 66.93      
26 A 762 750 4.96      
27 A 627 617 3.91      
28 A 514 506 4.14      
29 A 356 351 5.24      
30 A 345 340 13.20      
31 A 248 244 0.11      
32 A 149 147 0.62      
33 A 112 111 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 24075.5 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 23714.4 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 LSDA/6-31+G**
ABC
0.34086 0.10883 0.08665

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.380 0.484 0.000
C2 1.459 -1.023 -0.000
C3 -0.016 1.019 0.000
C4 -1.100 0.282 -0.001
C5 -2.186 -0.448 0.000
H6 1.914 0.898 -0.879
H7 1.913 0.898 0.879
H8 0.954 -1.445 0.886
H9 2.504 -1.373 -0.000
H10 0.955 -1.444 -0.887
H11 -0.136 2.113 0.000
H12 -2.661 -0.766 0.937
H13 -2.663 -0.767 -0.935

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.50931.49542.48853.68581.10831.10832.16492.17062.16492.22574.33314.3346
C21.50932.51912.87263.68982.16112.16111.10371.10201.10373.51864.23334.2343
C31.49542.51911.31052.61882.12402.12402.79223.47452.79221.10073.32603.3273
C42.48852.87261.31051.30833.19903.19912.82643.96572.82622.06892.10152.1017
C53.68583.68982.61881.30834.40364.40303.41164.78003.41223.27981.09741.0974
H61.10832.16112.12403.19904.40361.75793.08622.50582.53132.54005.19614.8710
H71.10832.16112.12403.19914.40301.75792.53132.50583.08622.53994.86855.1969
H82.16491.10372.79222.82643.41163.08622.53131.78651.77333.82513.67914.1061
H92.17061.10203.47453.96574.78002.50582.50581.78651.78654.37315.28445.2856
H102.16491.10372.79222.82623.41222.53133.08621.77331.78653.82514.10633.6809
H112.22573.51861.10072.06893.27982.54002.53993.82514.37313.82513.94253.9440
H124.33314.23333.32602.10151.09745.19614.86853.67915.28444.10633.94251.8712
H134.33464.23433.32732.10171.09744.87105.19694.10615.28563.68093.94401.8712

picture of 1,2-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H8 110.940 C1 C2 H9 111.501
C1 C2 H10 110.938 C1 C3 C4 124.837
C1 C3 H11 117.227 C2 C1 C3 113.942
C2 C1 H6 110.360 C2 C1 H7 110.360
C3 C1 H6 108.415 C3 C1 H7 108.409
C3 C4 C5 179.688 C4 C3 H11 117.936
C4 C5 H12 121.499 C4 C5 H13 121.516
H6 C1 H7 104.939 H8 C2 H9 108.190
H8 C2 H10 106.909 H9 C2 H10 108.190
H12 C5 H13 116.984
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.492      
2 C -0.687      
3 C -0.572      
4 C 0.566      
5 C -0.327      
6 H 0.194      
7 H 0.194      
8 H 0.198      
9 H 0.182      
10 H 0.198      
11 H 0.182      
12 H 0.182      
13 H 0.182      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.526 0.032 0.002 0.527
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.587 2.027 -0.002
y 2.027 -32.018 0.001
z -0.002 0.001 -32.486
Traceless
 xyz
x 1.665 2.027 -0.002
y 2.027 -0.482 0.001
z -0.002 0.001 -1.183
Polar
3z2-r2-2.366
x2-y21.431
xy2.027
xz-0.002
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.542 2.195 -0.000
y 2.195 8.873 -0.000
z -0.000 -0.000 6.761


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000