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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-193.710969
Energy at 298.15K-193.705859
HF Energy-192.788805
Nuclear repulsion energy157.158922
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3403 3403 5.15      
2 A' 3394 3394 38.05      
3 A' 3375 3375 17.33      
4 A' 3365 3365 2.04      
5 A' 3182 3182 25.05      
6 A' 1814 1814 0.35      
7 A' 1740 1740 1.76      
8 A' 1573 1573 2.85      
9 A' 1522 1522 10.64      
10 A' 1445 1445 1.30      
11 A' 1399 1399 1.10      
12 A' 1223 1223 0.14      
13 A' 1207 1207 1.10      
14 A' 1065 1065 0.33      
15 A' 1034 1034 11.68      
16 A' 981 981 7.46      
17 A' 864 864 7.15      
18 A' 864 864 0.01      
19 A" 3212 3212 23.99      
20 A" 1247 1247 0.00      
21 A" 1070 1070 2.05      
22 A" 1061 1061 0.00      
23 A" 1029 1029 28.47      
24 A" 802 802 0.00      
25 A" 746 746 68.07      
26 A" 555 555 0.00      
27 A" 378 378 5.43      

Unscaled Zero Point Vibrational Energy (zpe) 21774.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 21774.2 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 CBS-Q
ABC
0.27947 0.27353 0.14188

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.821 0.424 0.875
H2 -1.821 0.424 -0.875
C3 -1.186 0.276 0.000
H4 -1.082 -2.009 0.000
C5 -0.534 -1.083 0.000
H6 -0.083 2.281 0.000
C7 0.000 1.208 0.000
H8 2.128 0.889 0.000
C9 1.125 0.497 0.000
H10 1.516 -1.738 0.000
C11 0.789 -0.943 0.000

Atom - Atom Distances (Å)
  H1 H2 C3 H4 C5 H6 C7 H8 C9 H10 C11
H11.75081.09142.68952.16702.68952.16704.07113.07374.07113.0737
H21.75081.09142.68952.16702.68952.16704.07113.07374.07113.0737
C31.09141.09142.28791.50812.28791.50813.36992.32123.36992.3212
H42.68952.68952.28791.07614.40493.39434.32473.33982.61242.1537
C52.16702.16701.50811.07613.39432.35273.31262.29122.15151.3302
H62.68952.68952.28794.40493.39431.07612.61242.15374.32473.3398
C72.16702.16701.50813.39432.35271.07612.15151.33023.31262.2912
H84.07114.07113.36994.32473.31262.61242.15151.07672.69672.2690
C93.07373.07372.32123.33982.29122.15371.33021.07672.26901.4792
H104.07114.07113.36992.61242.15154.32473.31262.69672.26901.0767
C113.07373.07372.32122.15371.33023.33982.29122.26901.47921.0767

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 33.093 H1 C9 C7 37.112
H1 C9 C8 154.344 H2 C9 C7 37.112
H2 C9 C8 154.344 H3 C7 C9 109.571
H3 C7 C10 79.085 H4 C8 C9 20.762
H4 C8 C11 11.767 H5 C10 C7 45.068
H5 C10 C11 29.841 H6 C11 C8 51.291
H6 C11 C10 152.675 C7 C9 C8 126.406
C7 C10 C11 15.226 C8 C11 C10 101.384
C9 C7 C10 30.487 C9 C8 C11 32.530
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability