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

using model chemistry: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-193.152215
Energy at 298.15K-193.158336
HF Energy-192.729773
Nuclear repulsion energy153.365155
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 MP2/LANL2DZ
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 3245 3125 8.50      
2 A1 3208 3089 12.20      
3 A1 3030 2918 14.25      
4 A1 1511 1455 0.08      
5 A1 1466 1412 19.94      
6 A1 1392 1340 7.87      
7 A1 1138 1096 0.53      
8 A1 1004 967 0.53      
9 A1 915 881 12.89      
10 A1 808 778 0.04      
11 A2 1120 1078 0.00      
12 A2 882 849 0.00      
13 A2 671 646 0.00      
14 A2 502 484 0.00      
15 B1 3084 2970 18.60      
16 B1 960 925 20.17      
17 B1 897 864 1.37      
18 B1 646 622 131.07      
19 B1 350 338 7.96      
20 B2 3231 3112 41.87      
21 B2 3197 3079 0.36      
22 B2 1572 1514 0.00      
23 B2 1319 1270 0.86      
24 B2 1282 1235 5.20      
25 B2 1127 1085 1.86      
26 B2 977 941 13.29      
27 B2 817 787 2.34      

Unscaled Zero Point Vibrational Energy (zpe) 20173.7 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 19429.3 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 MP2/LANL2DZ
ABC
0.26934 0.26374 0.13675

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.895 0.000 1.903
H2 -0.895 0.000 1.903
H3 0.000 2.246 0.619
H4 0.000 -2.246 0.619
H5 0.000 1.370 -1.915
H6 0.000 -1.370 -1.915
C7 0.000 1.205 0.290
C8 0.000 -1.205 0.290
C9 0.000 0.000 1.249
C10 0.000 0.750 -1.016
C11 0.000 -0.750 -1.016

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.78992.73822.73824.15444.15442.20342.20341.10853.14443.1444
H21.78992.73822.73824.15444.15442.20342.20341.10853.14443.1444
H32.73822.73824.49302.68094.41611.09223.46702.33332.21643.4136
H42.73822.73824.49304.41612.68093.46701.09222.33333.41362.2164
H54.15444.15442.68094.41612.74092.21143.39043.44821.09212.3032
H64.15444.15444.41612.68092.74093.39042.21143.44822.30321.0921
C72.20342.20341.09223.46702.21143.39042.40971.53991.38332.3513
C82.20342.20343.46701.09223.39042.21142.40971.53992.35131.3833
C91.10851.10852.33332.33333.44823.44821.53991.53992.38642.3864
C103.14443.14442.21643.41361.09212.30321.38332.35132.38641.5002
C113.14443.14443.41362.21642.30321.09212.35131.38332.38641.5002

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 107.674 H1 C9 C7 111.561
H1 C9 C8 111.561 H2 C9 C7 111.561
H2 C9 C8 111.561 H3 C7 C9 123.972
H3 C7 C10 126.702 H4 C8 C9 123.972
H4 C8 C11 126.702 H5 C10 C7 126.194
H5 C10 C11 124.613 H6 C11 C8 126.194
H6 C11 C10 124.613 C7 C9 C8 102.961
C7 C10 C11 109.193 C8 C11 C10 109.193
C9 C7 C10 109.327 C9 C8 C11 109.327
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability