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

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-193.532742
Energy at 298.15K-193.538933
HF Energy-192.824708
Nuclear repulsion energy155.953006
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 QCISD/6-311G*
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 3232 3094 4.72      
2 A1 3207 3070 12.26      
3 A1 3037 2908 14.04      
4 A1 1589 1521 1.06      
5 A1 1464 1402 9.29      
6 A1 1418 1358 11.07      
7 A1 1141 1092 0.18      
8 A1 1020 976 0.11      
9 A1 940 900 9.37      
10 A1 813 778 0.00      
11 A2 1155 1106 0.00      
12 A2 894 856 0.00      
13 A2 707 677 0.00      
14 A2 505 484 0.00      
15 B1 3072 2941 13.17      
16 B1 943 903 23.58      
17 B1 919 880 3.45      
18 B1 674 645 89.50      
19 B1 339 325 6.22      
20 B2 3224 3086 29.15      
21 B2 3198 3062 1.21      
22 B2 1656 1586 0.31      
23 B2 1338 1281 2.42      
24 B2 1298 1243 1.30      
25 B2 1124 1076 1.42      
26 B2 989 947 10.95      
27 B2 817 782 4.34      

Unscaled Zero Point Vibrational Energy (zpe) 20356.6 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 19489.4 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 QCISD/6-311G*
ABC
0.27981 0.27222 0.14162

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.882 0.000 1.881
H2 -0.882 0.000 1.881
H3 0.000 2.219 0.609
H4 0.000 -2.219 0.609
H5 0.000 1.358 -1.889
H6 0.000 -1.358 -1.889
C7 0.000 1.182 0.282
C8 0.000 -1.182 0.282
C9 0.000 0.000 1.224
C10 0.000 0.740 -0.995
C11 0.000 -0.740 -0.995

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.76502.70532.70534.10344.10342.17562.17561.10063.09803.0980
H21.76502.70532.70534.10344.10342.17562.17561.10063.09803.0980
H32.70532.70534.43712.64234.36291.08643.41672.30202.18123.3658
H42.70532.70534.43714.36292.64233.41671.08642.30203.36582.1812
H54.10344.10342.64234.36292.71642.17853.34223.39601.08692.2813
H64.10344.10344.36292.64232.71643.34222.17853.39602.28131.0869
C72.17562.17561.08643.41672.17853.34222.36501.51131.35142.3084
C82.17562.17563.41671.08643.34222.17852.36501.51132.30841.3514
C91.10061.10062.30202.30203.39603.39601.51131.51132.33862.3386
C103.09803.09802.18123.36581.08692.28131.35142.30842.33861.4809
C113.09803.09803.36582.18122.28131.08692.30841.35142.33861.4809

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 106.614 H1 C9 C7 111.846
H1 C9 C8 111.846 H2 C9 C7 111.846
H2 C9 C8 111.846 H3 C7 C9 123.971
H3 C7 C10 126.603 H4 C8 C9 123.971
H4 C8 C11 126.603 H5 C10 C7 126.274
H5 C10 C11 124.635 H6 C11 C8 126.274
H6 C11 C10 124.635 C7 C9 C8 102.964
C7 C10 C11 109.092 C8 C11 C10 109.092
C9 C7 C10 109.426 C9 C8 C11 109.426
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability