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

using model chemistry: MP2=FULL/cc-pVTZ

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=FULL/cc-pVTZ
 hartrees
Energy at 0K-193.740988
Energy at 298.15K-193.747247
HF Energy-192.857891
Nuclear repulsion energy157.565079
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=FULL/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3292 3125 2.75      
2 A1 3263 3098 5.09      
3 A1 3082 2926 4.17      
4 A1 1549 1470 0.72      
5 A1 1429 1356 1.79      
6 A1 1415 1344 24.06      
7 A1 1142 1084 0.14      
8 A1 1043 990 0.20      
9 A1 952 904 10.87      
10 A1 814 773 0.01      
11 A2 1130 1073 0.00      
12 A2 959 911 0.00      
13 A2 723 687 0.00      
14 A2 524 497 0.00      
15 B1 3114 2956 2.88      
16 B1 961 912 0.07      
17 B1 923 876 35.04      
18 B1 692 657 64.74      
19 B1 337 320 8.16      
20 B2 3283 3117 13.16      
21 B2 3253 3088 1.87      
22 B2 1627 1545 0.19      
23 B2 1332 1264 1.25      
24 B2 1272 1208 1.77      
25 B2 1121 1064 1.30      
26 B2 995 945 11.51      
27 B2 817 776 5.14      

Unscaled Zero Point Vibrational Energy (zpe) 20520.7 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 19482.4 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 MP2=FULL/cc-pVTZ
ABC
0.28504 0.27869 0.14464

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.879 0.000 1.849
H2 -0.879 0.000 1.849
H3 0.000 2.192 0.620
H4 0.000 -2.192 0.620
H5 0.000 1.330 -1.875
H6 0.000 -1.330 -1.875
C7 0.000 1.173 0.283
C8 0.000 -1.173 0.283
C9 0.000 0.000 1.205
C10 0.000 0.729 -0.985
C11 0.000 -0.729 -0.985

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.75722.66262.66264.05124.05122.14482.14481.08933.05593.0559
H21.75722.66262.66264.05124.05122.14482.14481.08933.05593.0559
H32.66262.66264.38432.63954.31641.07343.38192.26902.17173.3333
H42.66262.66264.38434.31642.63953.38191.07342.26903.33332.1717
H54.05124.05122.63954.31642.66042.16403.30513.35531.07372.2434
H64.05124.05124.31642.63952.66043.30512.16403.35532.24341.0737
C72.14482.14481.07343.38192.16403.30512.34581.49201.34382.2863
C82.14482.14483.38191.07343.30512.16402.34581.49202.28631.3438
C91.08931.08932.26902.26903.35533.35531.49201.49202.30882.3088
C103.05593.05592.17173.33331.07372.24341.34382.28632.30881.4585
C113.05593.05593.33332.17172.24341.07372.28631.34382.30881.4585

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 107.525 H1 C9 C7 111.429
H1 C9 C8 111.429 H2 C9 C7 111.429
H2 C9 C8 111.429 H3 C7 C9 123.554
H3 C7 C10 127.551 H4 C8 C9 123.554
H4 C8 C11 127.551 H5 C10 C7 126.687
H5 C10 C11 124.035 H6 C11 C8 126.687
H6 C11 C10 124.035 C7 C9 C8 103.654
C7 C10 C11 109.278 C8 C11 C10 109.278
C9 C7 C10 108.895 C9 C8 C11 108.895
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability