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

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G4
 hartrees
Energy at 0K-193.969355
Energy at 298.15K-193.964217
HF Energy-194.115936
Nuclear repulsion energy156.669490
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 B3LYP/6-31G(2df,p)
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 3236 3123 2.40      
2 A1 3209 3097 13.10      
3 A1 3015 2910 10.52      
4 A1 1560 1505 1.70      
5 A1 1414 1364 3.20      
6 A1 1398 1350 15.90      
7 A1 1133 1093 0.10      
8 A1 1016 981 0.06      
9 A1 927 894 9.60      
10 A1 812 783 0.05      
11 A2 1118 1079 0.00      
12 A2 962 928 0.00      
13 A2 721 696 0.00      
14 A2 524 506 0.00      
15 B1 3039 2933 9.11      
16 B1 955 922 0.21      
17 B1 924 891 20.88      
18 B1 691 667 47.24      
19 B1 349 337 7.59      
20 B2 3229 3116 21.66      
21 B2 3198 3086 4.67      
22 B2 1645 1588 0.37      
23 B2 1316 1270 0.81      
24 B2 1264 1219 1.63      
25 B2 1118 1078 1.74      
26 B2 972 938 10.36      
27 B2 812 783 5.83      

Unscaled Zero Point Vibrational Energy (zpe) 20277.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 19568.0 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 B3LYP/6-31G(2df,p)
ABC
0.28251 0.27480 0.14296

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.876 0.000 1.880
H2 -0.876 0.000 1.880
H3 0.000 2.209 0.611
H4 0.000 -2.209 0.611
H5 0.000 1.344 -1.885
H6 0.000 -1.344 -1.885
C7 0.000 1.179 0.280
C8 0.000 -1.179 0.280
C9 0.000 0.000 1.215
C10 0.000 0.734 -0.989
C11 0.000 -0.734 -0.989

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.75212.69422.69424.09264.09262.17232.17231.09993.08903.0890
H21.75212.69422.69424.09264.09262.17232.17231.09993.08903.0890
H32.69422.69424.41842.64194.34201.08173.40482.29032.17673.3505
H42.69422.69424.41844.34202.64193.40481.08172.29033.35052.1767
H54.09264.09262.64194.34202.68732.17133.32473.37881.08312.2625
H64.09264.09264.34202.64192.68733.32472.17133.37882.26251.0831
C72.17232.17231.08173.40482.17133.32472.35891.50511.34552.2965
C82.17232.17233.40481.08173.32472.17132.35891.50512.29651.3455
C91.09991.09992.29032.29033.37883.37881.50511.50512.32382.3238
C103.08903.08902.17673.35051.08312.26251.34552.29652.32381.4683
C113.08903.08903.35052.17672.26251.08312.29651.34552.32381.4683

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 106.084 H1 C9 C7 112.017
H1 C9 C8 112.017 H2 C9 C7 112.017
H2 C9 C8 112.017 H3 C7 C9 123.583
H3 C7 C10 127.051 H4 C8 C9 123.583
H4 C8 C11 127.051 H5 C10 C7 126.593
H5 C10 C11 124.199 H6 C11 C8 126.593
H6 C11 C10 124.199 C7 C9 C8 102.852
C7 C10 C11 109.208 C8 C11 C10 109.208
C9 C7 C10 109.366 C9 C8 C11 109.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.127      
2 H 0.127      
3 H 0.095      
4 H 0.095      
5 H 0.093      
6 H 0.093      
7 C -0.088      
8 C -0.088      
9 C -0.291      
10 C -0.081      
11 C -0.081      


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 0.419 0.419
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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 92.703
(<r2>)1/2 9.628