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

using model chemistry: BLYP/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 BLYP/3-21G*
 hartrees
Energy at 0K-192.934530
Energy at 298.15K-192.940656
HF Energy-192.934530
Nuclear repulsion energy154.671335
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 BLYP/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 3179 3159 3.87      
2 A1 3150 3130 10.43      
3 A1 2964 2945 6.28      
4 A1 1489 1480 0.00      
5 A1 1431 1422 13.61      
6 A1 1360 1351 8.09      
7 A1 1128 1121 0.33      
8 A1 964 958 0.05      
9 A1 872 867 9.38      
10 A1 818 813 0.00      
11 A2 1138 1131 0.00      
12 A2 926 920 0.00      
13 A2 692 687 0.00      
14 A2 516 512 0.00      
15 B1 2988 2969 8.79      
16 B1 923 917 0.98      
17 B1 899 893 15.64      
18 B1 665 661 78.40      
19 B1 345 343 13.27      
20 B2 3168 3148 22.96      
21 B2 3141 3120 3.12      
22 B2 1574 1564 1.12      
23 B2 1305 1297 0.17      
24 B2 1220 1212 6.68      
25 B2 1112 1105 1.59      
26 B2 939 933 13.16      
27 B2 813 808 2.88      

Unscaled Zero Point Vibrational Energy (zpe) 19860.8 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 19731.7 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 BLYP/3-21G*
ABC
0.27527 0.26713 0.13916

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.893 0.000 1.892
H2 -0.893 0.000 1.892
H3 0.000 2.233 0.616
H4 0.000 -2.233 0.616
H5 0.000 1.354 -1.904
H6 0.000 -1.354 -1.904
C7 0.000 1.198 0.282
C8 0.000 -1.198 0.282
C9 0.000 0.000 1.238
C10 0.000 0.745 -1.002
C11 0.000 -0.745 -1.002

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.78502.72222.72224.12774.12772.19642.19641.10683.11853.1185
H21.78502.72222.72224.12774.12772.19642.19641.10683.11853.1185
H32.72222.72224.46602.66924.38341.08763.44742.31782.19853.3888
H42.72222.72224.46604.38342.66923.44741.08762.31783.38882.1985
H54.12774.12772.66924.38342.70702.19143.35993.42061.08842.2838
H64.12774.12774.38342.66922.70703.35992.19143.42062.28381.0884
C72.19642.19641.08763.44742.19143.35992.39621.53251.36152.3285
C82.19642.19643.44741.08763.35992.19142.39621.53252.32851.3615
C91.10681.10682.31782.31783.42063.42061.53251.53252.35982.3598
C103.11853.11852.19853.38881.08842.28381.36152.32852.35981.4892
C113.11853.11853.38882.19852.28381.08842.32851.36152.35981.4892

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 107.487 H1 C9 C7 111.638
H1 C9 C8 111.638 H2 C9 C7 111.638
H2 C9 C8 111.638 H3 C7 C9 123.526
H3 C7 C10 127.358 H4 C8 C9 123.526
H4 C8 C11 127.358 H5 C10 C7 126.525
H5 C10 C11 124.018 H6 C11 C8 126.525
H6 C11 C10 124.018 C7 C9 C8 102.854
C7 C10 C11 109.457 C8 C11 C10 109.457
C9 C7 C10 109.116 C9 C8 C11 109.116
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.209      
2 H 0.209      
3 H 0.158      
4 H 0.158      
5 H 0.154      
6 H 0.154      
7 C -0.147      
8 C -0.147      
9 C -0.430      
10 C -0.159      
11 C -0.159      


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 0.498 0.498
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 3.107 0.000 0.000
y 0.000 7.748 0.000
z 0.000 0.000 8.544


<r2> (average value of r2) Å2
<r2> 94.799
(<r2>)1/2 9.736