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

using model chemistry: BLYP/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-194.011205
Energy at 298.15K-194.017308
HF Energy-194.011205
Nuclear repulsion energy155.588056
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/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 3157 3140 2.39      
2 A1 3130 3113 17.22      
3 A1 2936 2920 11.80      
4 A1 1494 1485 1.41      
5 A1 1373 1365 4.63      
6 A1 1357 1349 12.91      
7 A1 1103 1097 0.09      
8 A1 989 984 0.04      
9 A1 896 891 9.09      
10 A1 790 786 0.06      
11 A2 1082 1076 0.00      
12 A2 923 917 0.00      
13 A2 690 686 0.00      
14 A2 508 505 0.00      
15 B1 2955 2939 10.14      
16 B1 915 910 2.38      
17 B1 890 885 16.12      
18 B1 672 668 42.74      
19 B1 341 339 7.73      
20 B2 3151 3134 25.58      
21 B2 3119 3102 5.52      
22 B2 1581 1572 0.18      
23 B2 1273 1266 0.57      
24 B2 1217 1210 1.68      
25 B2 1089 1083 1.60      
26 B2 944 938 9.85      
27 B2 790 786 5.08      

Unscaled Zero Point Vibrational Energy (zpe) 19681.5 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 19573.2 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 BLYP/6-31G(2df,p)
ABC
0.27838 0.27128 0.14098

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.880 0.000 1.895
H2 -0.880 0.000 1.895
H3 0.000 2.224 0.617
H4 0.000 -2.224 0.617
H5 0.000 1.349 -1.899
H6 0.000 -1.349 -1.899
C7 0.000 1.188 0.283
C8 0.000 -1.188 0.283
C9 0.000 0.000 1.223
C10 0.000 0.737 -0.997
C11 0.000 -0.737 -0.997

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.76072.71172.71174.12174.12172.18742.18741.10723.11153.1115
H21.76072.71172.71174.12174.12172.18742.18741.10723.11153.1115
H32.71172.71174.44802.66414.36991.08813.42872.30512.19453.3727
H42.71172.71174.44804.36992.66413.42871.08812.30513.37272.1945
H54.12174.12172.66414.36992.69762.18823.34663.40141.08982.2728
H64.12174.12174.36992.66412.69763.34662.18823.40142.27281.0898
C72.18742.18741.08813.42872.18823.34662.37681.51531.35732.3124
C82.18742.18743.42871.08813.34662.18822.37681.51532.31241.3573
C91.10721.10722.30512.30513.40143.40141.51531.51532.33962.3396
C103.11153.11152.19453.37271.08982.27281.35732.31242.33961.4747
C113.11153.11153.37272.19452.27281.08982.31241.35732.33961.4747

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 105.331 H1 C9 C7 112.104
H1 C9 C8 112.104 H2 C9 C7 112.104
H2 C9 C8 112.104 H3 C7 C9 123.774
H3 C7 C10 127.284 H4 C8 C9 123.774
H4 C8 C11 127.284 H5 C10 C7 126.462
H5 C10 C11 124.129 H6 C11 C8 126.462
H6 C11 C10 124.129 C7 C9 C8 103.299
C7 C10 C11 109.408 C8 C11 C10 109.408
C9 C7 C10 108.942 C9 C8 C11 108.942
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.111      
2 H 0.111      
3 H 0.072      
4 H 0.072      
5 H 0.069      
6 H 0.069      
7 C -0.061      
8 C -0.061      
9 C -0.270      
10 C -0.056      
11 C -0.056      


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 0.443 0.443
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 4.181 0.000 0.000
y 0.000 8.495 0.000
z 0.000 0.000 9.187


<r2> (average value of r2) Å2
<r2> 93.852
(<r2>)1/2 9.688