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All results from a given calculation for C5H8 (2,3-Pentadiene)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-195.218308
Energy at 298.15K-195.225367
Nuclear repulsion energy152.069234
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3158 3021 16.32      
2 A 3137 3001 4.73      
3 A 3105 2970 23.02      
4 A 3047 2915 7.84      
5 A 1537 1471 2.81      
6 A 1508 1443 5.97      
7 A 1469 1405 0.18      
8 A 1426 1364 1.78      
9 A 1181 1130 0.07      
10 A 1104 1056 1.22      
11 A 1065 1019 0.00      
12 A 907 868 22.60      
13 A 837 800 0.01      
14 A 550 526 2.66      
15 A 294 281 1.33      
16 A 178 170 0.00      
17 A 140 134 1.54      
18 A 3158 3021 35.73      
19 A 3136 3000 4.84      
20 A 3105 2971 23.16      
21 A 3046 2914 75.09      
22 A 2091 2000 11.75      
23 A 1517 1451 7.06      
24 A 1508 1442 6.40      
25 A 1423 1362 4.72      
26 A 1327 1269 22.34      
27 A 1113 1065 3.02      
28 A 1062 1016 0.30      
29 A 975 933 15.72      
30 A 712 681 18.41      
31 A 578 553 11.35      
32 A 230 220 0.63      
33 A 161 154 1.20      

Unscaled Zero Point Vibrational Energy (zpe) 24892.0 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 23814.2 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 B3PW91/6-31G*
ABC
0.57857 0.07419 0.07176

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.413
C2 0.000 1.310 0.412
C3 0.000 -1.310 0.412
C4 -0.873 2.175 -0.459
C5 0.873 -2.175 -0.459
H6 0.679 1.830 1.091
H7 -0.679 -1.830 1.091
H8 -1.511 2.826 0.153
H9 -0.264 2.829 -1.096
H10 -1.516 1.570 -1.103
H11 1.511 -2.826 0.153
H12 0.264 -2.829 -1.096
H13 1.516 -1.570 -1.103

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.30961.30962.50022.50022.06652.06653.21513.21722.65713.21513.21722.6571
C21.30962.61931.50593.69601.09243.28342.15612.15662.15884.41064.41283.5893
C31.30962.61933.69601.50593.28341.09244.41064.41283.58932.15612.15662.1588
C42.50021.50593.69604.68682.21994.29871.09771.09771.09345.57355.17094.4880
C52.50023.69601.50594.68684.29872.21995.57355.17094.48801.09771.09771.0934
H62.06651.09243.28342.21994.29873.90412.58212.58223.11454.82215.16384.1319
H72.06653.28341.09244.29872.21993.90414.82215.16384.13192.58212.58223.1145
H83.21512.15614.41061.09775.57352.58214.82211.76451.77636.40916.05725.4827
H93.21722.15664.41281.09775.17092.58225.16381.76451.77656.05725.68324.7453
H102.65712.15883.58931.09344.48803.11454.13191.77631.77655.48274.74534.3646
H113.21514.41062.15615.57351.09774.82212.58216.40916.05725.48271.76451.7763
H123.21724.41282.15665.17091.09775.16382.58226.05725.68324.74531.76451.7765
H132.65713.58932.15884.48801.09344.13193.11455.48274.74534.36461.77631.7765

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 125.105 C1 C2 H6 118.420
C1 C3 C5 125.105 C1 C3 H7 118.420
C2 C1 C3 179.900 C2 C4 H8 110.842
C2 C4 H9 110.880 C2 C4 H10 111.319
C3 C5 H11 110.842 C3 C5 H12 110.880
C3 C5 H13 111.319 C4 C2 H6 116.475
C5 C3 H7 116.475 H8 C4 H9 106.974
H8 C4 H10 108.327 H9 C4 H10 108.346
H11 C5 H12 106.974 H11 C5 H13 108.327
H12 C5 H13 108.346
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.298     -0.196
2 C -0.332     -0.028
3 C -0.332     -0.019
4 C -0.536     -0.207
5 C -0.536     -0.224
6 H 0.176     0.099
7 H 0.176     0.096
8 H 0.179     0.066
9 H 0.179     0.074
10 H 0.185     0.094
11 H 0.179     0.071
12 H 0.179     0.078
13 H 0.185     0.097


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 -0.197 0.197
CHELPG        
AIM        
ESP 0.002 0.007 -0.231 0.231


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.440 -0.192 0.000
y -0.192 -27.413 0.000
z 0.000 0.000 -31.614
Traceless
 xyz
x -1.927 -0.192 0.000
y -0.192 4.114 0.000
z 0.000 0.000 -2.187
Polar
3z2-r2-4.375
x2-y2-4.027
xy-0.192
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 171.989
(<r2>)1/2 13.114