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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-32.058200
Energy at 298.15K-32.066003
Nuclear repulsion energy84.763148
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 3384 3057 29.88      
2 A 3314 2994 7.43      
3 A 3293 2975 4.59      
4 A 3190 2882 37.02      
5 A 1830 1653 0.71      
6 A 1614 1459 5.22      
7 A 1565 1413 0.04      
8 A 1416 1279 0.11      
9 A 1362 1231 0.01      
10 A 1170 1057 11.02      
11 A 1115 1008 10.55      
12 A 1056 954 63.33      
13 A 975 881 4.24      
14 A 723 654 12.76      
15 A 394 356 0.61      
16 A 317 286 0.13      
17 A 96 86 0.01      
18 A 3384 3057 36.79      
19 A 3313 2993 17.33      
20 A 3293 2975 43.92      
21 A 3232 2920 24.06      
22 A 1822 1646 23.87      
23 A 1575 1423 5.59      
24 A 1439 1300 8.96      
25 A 1407 1271 7.47      
26 A 1260 1138 2.62      
27 A 1125 1017 19.16      
28 A 1055 953 61.48      
29 A 1025 926 0.74      
30 A 964 871 5.18      
31 A 661 597 13.60      
32 A 477 431 3.02      
33 A 107 97 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26475.6 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 23918.1 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
0.67157 0.07781 0.07713

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 0.667
C2 0.000 1.256 -0.183
C3 0.000 -1.256 -0.183
C4 0.951 2.182 -0.173
C5 -0.951 -2.182 -0.173
H6 -0.877 -0.004 1.312
H7 0.877 0.004 1.312
H8 -0.847 1.378 -0.844
H9 0.847 -1.378 -0.844
H10 0.895 3.054 -0.804
H11 -0.895 -3.054 -0.804
H12 1.816 2.101 0.469
H13 -1.816 -2.101 0.469

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51731.51732.52412.52411.08801.08802.21382.21383.50603.50602.78482.7848
C21.51732.51301.32723.56752.14292.13811.08122.84492.10164.44582.10673.8729
C31.51732.51303.56751.32722.13812.14292.84491.08124.44582.10163.87292.1067
C42.52411.32723.56754.76053.21302.63632.08133.62391.07815.58751.07975.1398
C52.52413.56751.32724.76052.63633.21303.62392.08135.58751.07815.13981.0797
H61.08802.14292.13813.21302.63631.75382.56093.08314.11903.71163.52112.4478
H71.08802.13812.14292.63633.21301.75383.08312.56093.71164.11902.44783.5211
H82.21381.08122.84492.08133.62392.56093.08313.23432.41774.43193.05633.8429
H92.21382.84491.08123.62392.08133.08312.56093.23434.43192.41773.84293.0563
H103.50602.10164.44581.07815.58754.11903.71162.41774.43196.36451.83725.9622
H113.50604.44582.10165.58751.07813.71164.11904.43192.41776.36455.96221.8372
H122.78482.10673.87291.07975.13983.52112.44783.05633.84291.83725.96225.5553
H132.78483.87292.10675.13981.07972.44783.52113.84293.05635.96221.83725.5553

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 124.948 C1 C2 H8 115.827
C1 C3 C5 124.948 C1 C3 H9 115.827
C2 C1 C3 111.807 C2 C1 H6 109.572
C2 C1 H7 109.190 C2 C4 H10 121.450
C2 C4 H12 121.813 C3 C1 H6 109.190
C3 C1 H7 109.572 C3 C5 H11 121.450
C3 C5 H13 121.813 C4 C2 H8 119.223
C5 C3 H9 119.223 H6 C1 H7 107.407
H10 C4 H12 116.736 H11 C5 H13 116.736
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 -0.407      
2 C -0.025      
3 C -0.025      
4 C -0.510      
5 C -0.510      
6 H 0.181      
7 H 0.181      
8 H 0.196      
9 H 0.196      
10 H 0.178      
11 H 0.178      
12 H 0.183      
13 H 0.183      


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 0.104 0.104
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x 1.250 1.230 0.000
y 1.230 -0.316 0.000
z 0.000 0.000 -0.935
Traceless
 xyz
x 1.876 1.230 0.000
y 1.230 -0.474 0.000
z 0.000 0.000 -1.402
Polar
3z2-r2-2.804
x2-y21.566
xy1.230
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.673 3.249 0.000
y 3.249 10.534 0.000
z 0.000 0.000 6.072


<r2> (average value of r2) Å2
<r2> 129.337
(<r2>)1/2 11.373