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

using model chemistry: HF/CEP-121G

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-121G
 hartrees
Energy at 0K-31.974062
Energy at 298.15K-31.981925
Nuclear repulsion energy84.443068
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-121G
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 3372 3077 35.32      
2 A 3294 3006 8.17      
3 A 3266 2981 6.25      
4 A 3156 2880 39.99      
5 A 1810 1651 0.65      
6 A 1627 1484 9.83      
7 A 1573 1435 0.10      
8 A 1425 1301 0.13      
9 A 1369 1249 0.09      
10 A 1185 1081 4.29      
11 A 1123 1025 5.46      
12 A 1085 990 84.18      
13 A 981 895 5.55      
14 A 728 664 13.16      
15 A 400 365 0.62      
16 A 315 287 0.19      
17 A 92 84 0.01      
18 A 3373 3077 42.84      
19 A 3293 3005 16.91      
20 A 3267 2981 36.24      
21 A 3207 2926 23.83      
22 A 1802 1645 29.67      
23 A 1579 1441 7.83      
24 A 1449 1322 7.56      
25 A 1424 1300 0.96      
26 A 1275 1163 2.15      
27 A 1131 1032 9.12      
28 A 1084 989 84.51      
29 A 1038 947 1.87      
30 A 986 900 7.95      
31 A 669 610 15.65      
32 A 482 440 2.68      
33 A 103 94 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26480.2 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 24163.2 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 HF/CEP-121G
ABC
0.68405 0.07665 0.07592

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.656
C2 0.000 1.261 -0.194
C3 0.000 -1.261 -0.194
C4 0.943 2.210 -0.158
C5 -0.943 -2.210 -0.158
H6 -0.875 -0.004 1.302
H7 0.875 0.004 1.302
H8 -0.834 1.367 -0.872
H9 0.834 -1.367 -0.872
H10 0.889 3.082 -0.786
H11 -0.889 -3.082 -0.786
H12 1.794 2.141 0.501
H13 -1.794 -2.141 0.501

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52091.52092.53722.53721.08771.08772.21372.21373.51743.51742.79752.7975
C21.52092.52191.33873.59712.14582.14141.07992.83942.11144.47272.11573.9083
C31.52092.52193.59711.33872.14142.14582.83941.07994.47272.11143.90832.1157
C42.53721.33873.59714.80603.21562.64682.09263.64951.07645.63571.07835.1826
C52.53723.59711.33874.80602.64683.21563.64952.09265.63571.07645.18261.0783
H61.08772.14582.14143.21562.64681.75022.57083.08344.12283.72033.51652.4605
H71.08772.14142.14582.64683.21561.75023.08342.57083.72034.12282.46053.5165
H82.21371.07992.83942.09263.64952.57083.08343.20282.43244.45073.06433.8878
H92.21372.83941.07993.64952.09263.08342.57083.20284.45072.43243.88783.0643
H103.51742.11144.47271.07645.63574.12283.72032.43244.45076.41591.83396.0115
H113.51744.47272.11145.63571.07643.72034.12284.45072.43246.41596.01151.8339
H122.79752.11573.90831.07835.18263.51652.46053.06433.88781.83396.01155.5865
H132.79753.90832.11575.18261.07832.46053.51653.88783.06436.01151.83395.5865

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 124.940 C1 C2 H8 115.634
C1 C3 C5 124.940 C1 C3 H9 115.634
C2 C1 C3 112.007 C2 C1 H6 109.565
C2 C1 H7 109.224 C2 C4 H10 121.537
C2 C4 H12 121.797 C3 C1 H6 109.224
C3 C1 H7 109.565 C3 C5 H11 121.537
C3 C5 H13 121.797 C4 C2 H8 119.425
C5 C3 H9 119.425 H6 C1 H7 107.133
H10 C4 H12 116.666 H11 C5 H13 116.666
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.477      
2 C 0.074      
3 C 0.074      
4 C -0.425      
5 C -0.425      
6 H 0.153      
7 H 0.153      
8 H 0.152      
9 H 0.152      
10 H 0.136      
11 H 0.136      
12 H 0.147      
13 H 0.147      


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 0.106 0.106
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x 1.068 1.131 0.000
y 1.131 -0.342 0.000
z 0.000 0.000 -0.727
Traceless
 xyz
x 1.602 1.131 0.000
y 1.131 -0.512 0.000
z 0.000 0.000 -1.090
Polar
3z2-r2-2.180
x2-y21.410
xy1.131
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.626 3.465 0.000
y 3.465 10.589 0.000
z 0.000 0.000 5.920


<r2> (average value of r2) Å2
<r2> 130.946
(<r2>)1/2 11.443