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All results from a given calculation for C5H6 (1,3-Cyclopentadiene)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-192.775267
Energy at 298.15K-192.781410
HF Energy-192.775267
Nuclear repulsion energy155.030925
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 PBEPBE/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 A1 3194 3165 3.23      
2 A1 3164 3135 6.60      
3 A1 2978 2951 3.00      
4 A1 1499 1485 0.21      
5 A1 1411 1399 18.22      
6 A1 1360 1347 10.39      
7 A1 1123 1113 0.39      
8 A1 985 976 0.08      
9 A1 893 885 11.24      
10 A1 819 812 0.00      
11 A2 1134 1123 0.00      
12 A2 928 919 0.00      
13 A2 695 689 0.00      
14 A2 517 512 0.00      
15 B1 3013 2985 4.18      
16 B1 923 914 0.85      
17 B1 888 880 20.49      
18 B1 665 659 89.78      
19 B1 338 335 16.48      
20 B2 3182 3153 15.89      
21 B2 3154 3126 2.77      
22 B2 1582 1567 1.65      
23 B2 1296 1285 0.38      
24 B2 1218 1207 8.67      
25 B2 1106 1096 2.12      
26 B2 956 948 14.84      
27 B2 817 810 4.13      

Unscaled Zero Point Vibrational Energy (zpe) 19918.9 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 19737.7 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 PBEPBE/3-21G
ABC
0.27650 0.26889 0.13997

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.895 0.000 1.885
H2 -0.895 0.000 1.885
H3 0.000 2.229 0.620
H4 0.000 -2.229 0.620
H5 0.000 1.353 -1.903
H6 0.000 -1.353 -1.903
C7 0.000 1.193 0.284
C8 0.000 -1.193 0.284
C9 0.000 0.000 1.231
C10 0.000 0.742 -1.000
C11 0.000 -0.742 -1.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.78952.71502.71504.12074.12072.18812.18811.10853.11093.1109
H21.78952.71502.71504.12074.12072.18812.18811.10853.11093.1109
H32.71502.71504.45892.67064.38201.08943.43912.31162.20013.3843
H42.71502.71504.45894.38202.67063.43911.08942.31163.38432.2001
H54.12074.12072.67064.38202.70682.19273.35673.41331.09012.2810
H64.12074.12074.38202.67062.70683.35672.19273.41332.28101.0901
C72.18812.18811.08943.43912.19273.35672.38651.52321.36172.3224
C82.18812.18813.43911.08943.35672.19272.38651.52322.32241.3617
C91.10851.10852.31162.31163.41333.41331.52321.52322.35132.3513
C103.11093.11092.20013.38431.09012.28101.36172.32242.35131.4831
C113.11093.11093.38432.20012.28101.09012.32241.36172.35131.4831

picture of 1,3-Cyclopentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C9 H2 107.636 H1 C9 C7 111.526
H1 C9 C8 111.526 H2 C9 C7 111.526
H2 C9 C8 111.526 H3 C7 C9 123.605
H3 C7 C10 127.339 H4 C8 C9 123.605
H4 C8 C11 127.339 H5 C10 C7 126.483
H5 C10 C11 124.145 H6 C11 C8 126.483
H6 C11 C10 124.145 C7 C9 C8 103.144
C7 C10 C11 109.372 C8 C11 C10 109.372
C9 C7 C10 109.056 C9 C8 C11 109.056
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.242      
2 H 0.242      
3 H 0.191      
4 H 0.191      
5 H 0.188      
6 H 0.188      
7 C -0.180      
8 C -0.180      
9 C -0.496      
10 C -0.193      
11 C -0.193      


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 0.554 0.554
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.122 0.000 0.000
y 0.000 7.734 0.000
z 0.000 0.000 8.524


<r2> (average value of r2) Å2
<r2> 94.305
(<r2>)1/2 9.711