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

using model chemistry: B3LYP/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/CEP-121G*
 hartrees
Energy at 0K-31.824161
Energy at 298.15K-31.830330
Nuclear repulsion energy80.751489
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/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 A1 3207 3108 3.86      
2 A1 3182 3085 23.24      
3 A1 3004 2912 18.53      
4 A1 1531 1484 1.25      
5 A1 1432 1388 10.25      
6 A1 1391 1348 9.80      
7 A1 1117 1082 0.23      
8 A1 997 967 0.19      
9 A1 911 883 9.92      
10 A1 801 777 0.00      
11 A2 1122 1087 0.00      
12 A2 957 927 0.00      
13 A2 707 685 0.00      
14 A2 513 497 0.00      
15 B1 3029 2937 17.98      
16 B1 946 917 0.13      
17 B1 915 887 33.58      
18 B1 681 660 81.29      
19 B1 343 333 8.89      
20 B2 3200 3102 37.40      
21 B2 3172 3075 4.50      
22 B2 1615 1565 0.01      
23 B2 1307 1267 0.97      
24 B2 1262 1223 1.06      
25 B2 1102 1069 2.31      
26 B2 957 928 13.66      
27 B2 804 779 6.23      

Unscaled Zero Point Vibrational Energy (zpe) 20101.3 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 19486.2 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 B3LYP/CEP-121G*
ABC
0.27803 0.27011 0.14058

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.881 0.000 1.890
H2 -0.881 0.000 1.890
H3 0.000 2.226 0.610
H4 0.000 -2.226 0.610
H5 0.000 1.357 -1.895
H6 0.000 -1.357 -1.895
C7 0.000 1.190 0.284
C8 0.000 -1.190 0.284
C9 0.000 0.000 1.227
C10 0.000 0.741 -0.998
C11 0.000 -0.741 -0.998

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.76252.71482.71484.11614.11612.18442.18441.10253.10863.1086
H21.76252.71482.71484.11614.11612.18442.18441.10253.10863.1086
H32.71482.71484.45272.65224.37221.08703.43162.31022.18933.3752
H42.71482.71484.45274.37222.65223.43161.08702.31023.37522.1893
H54.11614.11612.65224.37222.71332.18513.35123.40441.08822.2815
H64.11614.11614.37222.65222.71333.35122.18513.40442.28151.0882
C72.18442.18441.08703.43162.18513.35122.37931.51851.35772.3172
C82.18442.18443.43161.08703.35122.18512.37931.51852.31721.3577
C91.10251.10252.31022.31023.40443.40441.51851.51852.34522.3452
C103.10863.10862.18933.37521.08822.28151.35772.31722.34521.4820
C113.10863.10863.37522.18932.28151.08822.31721.35772.34521.4820

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 106.132 H1 C9 C7 111.927
H1 C9 C8 111.927 H2 C9 C7 111.927
H2 C9 C8 111.927 H3 C7 C9 124.078
H3 C7 C10 126.797 H4 C8 C9 124.078
H4 C8 C11 126.797 H5 C10 C7 126.246
H5 C10 C11 124.456 H6 C11 C8 126.246
H6 C11 C10 124.456 C7 C9 C8 103.155
C7 C10 C11 109.298 C8 C11 C10 109.298
C9 C7 C10 109.125 C9 C8 C11 109.125
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.174      
2 H 0.174      
3 H 0.190      
4 H 0.190      
5 H 0.194      
6 H 0.194      
7 C -0.197      
8 C -0.197      
9 C -0.386      
10 C -0.168      
11 C -0.168      


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 0.455 0.455
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.103 0.000 0.000
y 0.000 -28.629 0.000
z 0.000 0.000 -26.996
Traceless
 xyz
x -5.291 0.000 0.000
y 0.000 1.420 0.000
z 0.000 0.000 3.870
Polar
3z2-r27.741
x2-y2-4.474
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.760 0.000 0.000
y 0.000 8.940 0.000
z 0.000 0.000 9.800


<r2> (average value of r2) Å2
<r2> 79.028
(<r2>)1/2 8.890