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

using model chemistry: HF/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-192.802416
Energy at 298.15K-192.808940
HF Energy-192.802416
Nuclear repulsion energy157.407840
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 HF/6-31G**
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 3400 3068 5.03      
2 A1 3372 3044 14.80      
3 A1 3176 2866 23.71      
4 A1 1739 1570 1.94      
5 A1 1564 1412 2.36      
6 A1 1528 1379 11.78      
7 A1 1228 1108 0.13      
8 A1 1067 963 0.29      
9 A1 983 887 7.45      
10 A1 866 781 0.00      
11 A2 1245 1124 0.00      
12 A2 1074 969 0.00      
13 A2 811 732 0.00      
14 A2 560 505 0.00      
15 B1 3205 2893 23.67      
16 B1 1082 976 1.78      
17 B1 1029 928 31.33      
18 B1 750 677 70.19      
19 B1 379 342 5.75      
20 B2 3391 3061 35.97      
21 B2 3363 3035 2.20      
22 B2 1816 1639 0.42      
23 B2 1449 1308 1.14      
24 B2 1404 1267 1.33      
25 B2 1212 1094 1.05      
26 B2 1036 935 11.79      
27 B2 867 782 7.05      

Unscaled Zero Point Vibrational Energy (zpe) 21795.0 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 19672.2 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 HF/6-31G**
ABC
0.28606 0.27579 0.14411

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.874 0.000 1.866
H2 -0.874 0.000 1.866
H3 0.000 2.199 0.597
H4 0.000 -2.199 0.597
H5 0.000 1.346 -1.867
H6 0.000 -1.346 -1.867
C7 0.000 1.175 0.274
C8 0.000 -1.175 0.274
C9 0.000 0.000 1.216
C10 0.000 0.738 -0.981
C11 0.000 -0.738 -0.981

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.74842.68502.68504.06374.06372.16332.16331.08943.06853.0685
H21.74842.68502.68504.06374.06372.16332.16331.08943.06853.0685
H32.68502.68504.39732.60774.31681.07383.38872.28422.15013.3340
H42.68502.68504.39734.31682.60773.38871.07382.28423.33402.1501
H54.06374.06372.60774.31682.69132.14793.30703.36421.07442.2645
H64.06374.06374.31682.60772.69133.30702.14793.36422.26451.0744
C72.16332.16331.07383.38872.14793.30702.34921.50591.32862.2877
C82.16332.16333.38871.07383.30702.14792.34921.50592.28771.3286
C91.08941.08942.28422.28423.36423.36421.50591.50592.31782.3178
C103.06853.06852.15013.33401.07442.26451.32862.28772.31781.4764
C113.06853.06853.33402.15012.26451.07442.28771.32862.31781.4764

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 106.726 H1 C9 C7 111.926
H1 C9 C8 111.926 H2 C9 C7 111.926
H2 C9 C8 111.926 H3 C7 C9 123.749
H3 C7 C10 126.690 H4 C8 C9 123.749
H4 C8 C11 126.690 H5 C10 C7 126.399
H5 C10 C11 124.426 H6 C11 C8 126.399
H6 C11 C10 124.426 C7 C9 C8 102.526
C7 C10 C11 109.176 C8 C11 C10 109.176
C9 C7 C10 109.561 C9 C8 C11 109.561
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.140      
2 H 0.140      
3 H 0.140      
4 H 0.140      
5 H 0.142      
6 H 0.142      
7 C -0.155      
8 C -0.155      
9 C -0.262      
10 C -0.136      
11 C -0.136      


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 0.318 0.318
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 3.617 0.000 0.000
y 0.000 7.441 0.000
z 0.000 0.000 8.782


<r2> (average value of r2) Å2
<r2> 92.272
(<r2>)1/2 9.606