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All results from a given calculation for C5H8 (1,2-Pentadiene)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-194.106894
Energy at 298.15K-194.114269
Nuclear repulsion energy157.266582
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 B1B95/3-21G
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 3158 3021 6.97      
2 A 3153 3016 26.98      
3 A 3150 3014 0.89      
4 A 3075 2942 15.52      
5 A 3053 2921 24.56      
6 A 2094 2003 26.19      
7 A 1559 1491 6.97      
8 A 1537 1470 0.24      
9 A 1518 1452 5.35      
10 A 1455 1392 10.74      
11 A 1411 1350 6.94      
12 A 1348 1290 5.01      
13 A 1176 1125 1.00      
14 A 1102 1054 3.71      
15 A 1017 973 1.84      
16 A 918 878 75.80      
17 A 854 817 2.08      
18 A 644 616 1.59      
19 A 361 346 4.26      
20 A 152 146 0.34      
21 A 3222 3083 3.78      
22 A 3153 3016 24.03      
23 A 3084 2950 11.88      
24 A 1553 1486 10.15      
25 A 1325 1268 0.01      
26 A 1135 1086 2.55      
27 A 1065 1019 0.51      
28 A 923 883 17.99      
29 A 818 782 6.79      
30 A 535 512 6.83      
31 A 333 318 7.82      
32 A 247 237 0.17      
33 A 102 97 0.22      

Unscaled Zero Point Vibrational Energy (zpe) 25114.0 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 24026.5 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 B1B95/3-21G
ABC
0.33364 0.11062 0.08726

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.409 -1.074 0.000
C2 -1.402 0.459 0.000
C3 0.000 1.037 0.000
C4 1.088 0.317 0.000
C5 2.173 -0.404 0.000
H6 -1.937 0.836 0.881
H7 -1.937 0.836 -0.881
H8 -0.890 -1.455 -0.884
H9 -2.433 -1.457 0.000
H10 -0.890 -1.455 0.884
H11 0.083 2.122 0.000
H12 2.649 -0.719 -0.925
H13 2.649 -0.719 0.925

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.53242.53752.85793.64402.16822.16821.09351.09331.09353.52684.17654.1765
C21.53241.51612.49343.67761.09741.09742.16932.17522.16932.22954.31794.3179
C32.53751.51611.30442.60772.13692.13692.79013.48362.79011.08863.30933.3093
C42.85792.49341.30441.30343.19253.19252.79933.94222.79932.06612.08902.0890
C53.64403.67762.60771.30344.38244.38243.35744.72473.35743.27941.08611.0861
H62.16821.09742.13693.19254.38241.76163.07552.50562.51882.55105.16724.8418
H72.16821.09742.13693.19254.38241.76162.51882.50563.07552.55104.84185.1672
H81.09352.16932.79012.79933.35743.07552.51881.77781.76803.81153.61504.0420
H91.09332.17523.48363.94224.72472.50562.50561.77781.77784.37445.21725.2172
H101.09352.16932.79012.79933.35742.51883.07551.76801.77783.81154.04203.6150
H113.52682.22951.08862.06613.27942.55102.55103.81154.37443.81153.93823.9382
H124.17654.31793.30932.08901.08615.16724.84183.61505.21724.04203.93821.8492
H134.17654.31793.30932.08901.08614.84185.16724.04205.21723.61503.93821.8492

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 28.218 C1 C2 H9 28.030
C1 C2 H10 28.218 C1 C3 C4 90.236
C1 C3 H11 150.635 C2 C1 C3 33.454
C2 C1 H6 28.406 C2 C1 H7 28.406
C3 C1 H6 53.316 C3 C1 H7 53.316
C3 C4 C5 179.875 C4 C3 H11 119.129
C4 C5 H12 121.645 C4 C5 H13 121.645
H6 C1 H7 47.935 H8 C2 H9 48.309
H8 C2 H10 48.097 H9 C2 H10 48.309
H12 C5 H13 116.710
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.602      
2 C -0.463      
3 C -0.314      
4 C 0.130      
5 C -0.514      
6 H 0.225      
7 H 0.225      
8 H 0.215      
9 H 0.204      
10 H 0.215      
11 H 0.229      
12 H 0.225      
13 H 0.225      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.368 0.002 0.000 0.368
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.545 -2.013 0.000
y -2.013 -31.028 0.000
z 0.000 0.000 -31.916
Traceless
 xyz
x 1.927 -2.013 0.000
y -2.013 -0.297 0.000
z 0.000 0.000 -1.629
Polar
3z2-r2-3.259
x2-y21.483
xy-2.013
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.291 -2.314 0.000
y -2.314 6.621 0.000
z 0.000 0.000 4.975


<r2> (average value of r2) Å2
<r2> 141.761
(<r2>)1/2 11.906