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All results from a given calculation for C5H8 (1,4-Pentadiene)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-31.959568
Energy at 298.15K-31.967400
Nuclear repulsion energy84.086101
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 HF/CEP-31G
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 3424 3087 53.78      
2 A 3355 3024 9.95      
3 A 3327 2999 6.77      
4 A 3218 2901 52.49      
5 A 1836 1655 0.29      
6 A 1624 1464 11.52      
7 A 1578 1422 0.03      
8 A 1437 1295 0.01      
9 A 1375 1240 0.22      
10 A 1194 1076 7.16      
11 A 1135 1023 6.13      
12 A 1095 987 93.14      
13 A 981 885 5.76      
14 A 733 660 15.25      
15 A 401 361 0.68      
16 A 318 287 0.27      
17 A 91 82 0.01      
18 A 3423 3086 64.48      
19 A 3354 3023 24.83      
20 A 3327 2999 57.89      
21 A 3269 2946 33.70      
22 A 1831 1651 26.18      
23 A 1587 1430 10.09      
24 A 1459 1315 6.79      
25 A 1434 1293 1.90      
26 A 1283 1157 2.08      
27 A 1143 1031 10.72      
28 A 1094 986 97.39      
29 A 1044 941 1.50      
30 A 981 885 7.85      
31 A 676 609 18.21      
32 A 487 439 2.74      
33 A 100 90 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26806.9 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 24163.7 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 HF/CEP-31G
ABC
0.67972 0.07601 0.07540

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.651
C2 0.000 1.265 -0.200
C3 0.000 -1.265 -0.200
C4 0.962 2.214 -0.151
C5 -0.962 -2.214 -0.151
H6 -0.877 -0.005 1.298
H7 0.877 0.005 1.298
H8 -0.830 1.381 -0.884
H9 0.830 -1.381 -0.884
H10 0.915 3.094 -0.777
H11 -0.915 -3.094 -0.777
H12 1.811 2.132 0.514
H13 -1.811 -2.132 0.514

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52421.52422.54342.54341.09031.09032.22502.22503.52823.52822.80102.8010
C21.52422.52941.35253.60952.15072.14471.08182.85562.12524.49082.13133.9154
C31.52422.52943.60951.35252.14472.15072.85561.08184.49082.12523.91542.1313
C42.54341.35253.60954.82783.22572.64262.10823.67091.08125.66471.08115.1983
C52.54343.60951.35254.82782.64263.22573.67092.10825.66471.08125.19831.0811
H61.09032.15072.14473.22572.64261.75492.58513.09324.13793.72113.52282.4518
H71.09032.14472.15072.64263.22571.75493.09322.58513.72114.13792.45183.5228
H82.22501.08182.85562.10823.67092.58513.09323.22182.44804.47653.08143.9063
H92.22502.85561.08183.67092.10823.09322.58513.22184.47652.44803.90633.0814
H103.52822.12524.49081.08125.66474.13793.72112.44804.47656.45271.84226.0344
H113.52824.49082.12525.66471.08123.72114.13794.47652.44806.45276.03441.8422
H122.80102.13133.91541.08115.19833.52282.45183.08143.90631.84226.03445.5953
H132.80103.91542.13135.19831.08112.45183.52283.90633.08146.03441.84225.5953

picture of 1,4-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 124.188 C1 C2 H8 116.220
C1 C3 C5 124.188 C1 C3 H9 116.220
C2 C1 C3 112.148 C2 C1 H6 109.578
C2 C1 H7 109.111 C2 C4 H10 121.272
C2 C4 H12 121.881 C3 C1 H6 109.111
C3 C1 H7 109.578 C3 C5 H11 121.272
C3 C5 H13 121.881 C4 C2 H8 119.590
C5 C3 H9 119.590 H6 C1 H7 107.188
H10 C4 H12 116.847 H11 C5 H13 116.847
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.366      
2 C 0.010      
3 C 0.010      
4 C -0.506      
5 C -0.506      
6 H 0.117      
7 H 0.117      
8 H 0.227      
9 H 0.227      
10 H 0.146      
11 H 0.146      
12 H 0.190      
13 H 0.190      


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 0.107 0.107
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x 1.171 1.109 0.000
y 1.109 -0.471 0.000
z 0.000 0.000 -0.700
Traceless
 xyz
x 1.756 1.109 0.000
y 1.109 -0.706 0.000
z 0.000 0.000 -1.050
Polar
3z2-r2-2.100
x2-y21.642
xy1.109
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.125 3.690 0.000
y 3.690 10.143 0.000
z 0.000 0.000 5.197


<r2> (average value of r2) Å2
<r2> 131.697
(<r2>)1/2 11.476