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

using model chemistry: CCD/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 CCD/6-31G**
 hartrees
Energy at 0K-193.509735
Energy at 298.15K-193.515989
HF Energy-192.801454
Nuclear repulsion energy156.520904
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 CCD/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 3314 3108 4.02      
2 A1 3289 3084 11.18      
3 A1 3109 2915 12.97      
4 A1 1633 1531 1.68      
5 A1 1496 1403 5.01      
6 A1 1455 1364 7.02      
7 A1 1166 1094 0.03      
8 A1 1039 974 0.03      
9 A1 956 897 6.64      
10 A1 820 769 0.01      
11 A2 1167 1094 0.00      
12 A2 925 867 0.00      
13 A2 724 679 0.00      
14 A2 508 476 0.00      
15 B1 3150 2953 13.73      
16 B1 966 905 17.25      
17 B1 949 890 2.84      
18 B1 689 646 61.18      
19 B1 344 323 6.00      
20 B2 3306 3100 28.06      
21 B2 3280 3076 1.67      
22 B2 1703 1597 0.05      
23 B2 1370 1285 1.22      
24 B2 1327 1244 0.51      
25 B2 1151 1079 0.61      
26 B2 1006 943 6.16      
27 B2 825 774 3.65      

Unscaled Zero Point Vibrational Energy (zpe) 20833.2 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 19533.2 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 CCD/6-31G**
ABC
0.28161 0.27425 0.14259

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.878 0.000 1.874
H2 -0.878 0.000 1.874
H3 0.000 2.208 0.608
H4 0.000 -2.208 0.608
H5 0.000 1.350 -1.881
H6 0.000 -1.350 -1.881
C7 0.000 1.179 0.281
C8 0.000 -1.179 0.281
C9 0.000 0.000 1.220
C10 0.000 0.738 -0.992
C11 0.000 -0.738 -0.992

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.75552.69242.69244.08654.08652.16762.16761.09463.08683.0868
H21.75552.69242.69244.08654.08652.16762.16761.09463.08683.0868
H32.69242.69244.41582.63304.34261.07963.40262.29132.17273.3518
H42.69242.69244.41584.34262.63303.40261.07962.29133.35182.1727
H54.08654.08652.63304.34262.70062.16943.32773.38291.08032.2696
H64.08654.08654.34262.63302.70063.32772.16943.38292.26961.0803
C72.16762.16761.07963.40262.16943.32772.35791.50731.34722.3007
C82.16762.16763.40261.07963.32772.16942.35791.50732.30071.3472
C91.09461.09462.29132.29133.38293.38291.50731.50732.33172.3317
C103.08683.08682.17273.35181.08032.26961.34722.30072.33171.4752
C113.08683.08683.35182.17272.26961.08032.30071.34722.33171.4752

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 106.622 H1 C9 C7 111.856
H1 C9 C8 111.856 H2 C9 C7 111.856
H2 C9 C8 111.856 H3 C7 C9 123.840
H3 C7 C10 126.742 H4 C8 C9 123.840
H4 C8 C11 126.742 H5 C10 C7 126.325
H5 C10 C11 124.551 H6 C11 C8 126.325
H6 C11 C10 124.551 C7 C9 C8 102.918
C7 C10 C11 109.124 C8 C11 C10 109.124
C9 C7 C10 109.418 C9 C8 C11 109.418
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability