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

using model chemistry: MP2/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/cc-pVTZ
 hartrees
Energy at 0K-193.663328
Energy at 298.15K-193.669542
HF Energy-192.857393
Nuclear repulsion energy156.943393
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/cc-pVTZ
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 3271 3106 2.63      
2 A1 3247 3083 5.59      
3 A1 3068 2913 4.58      
4 A1 1536 1459 0.70      
5 A1 1418 1346 2.04      
6 A1 1404 1333 22.41      
7 A1 1129 1072 0.12      
8 A1 1033 980 0.22      
9 A1 943 896 10.55      
10 A1 807 766 0.01      
11 A2 1123 1066 0.00      
12 A2 941 894 0.00      
13 A2 706 671 0.00      
14 A2 516 490 0.00      
15 B1 3111 2954 3.26      
16 B1 947 900 0.50      
17 B1 911 865 31.89      
18 B1 681 647 67.63      
19 B1 334 317 7.76      
20 B2 3264 3099 13.56      
21 B2 3238 3074 2.12      
22 B2 1614 1533 0.14      
23 B2 1321 1254 1.23      
24 B2 1263 1200 1.53      
25 B2 1109 1053 1.29      
26 B2 989 939 11.07      
27 B2 811 770 5.02      

Unscaled Zero Point Vibrational Energy (zpe) 20367.2 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 19338.7 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/cc-pVTZ
ABC
0.28287 0.27645 0.14350

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.881 0.000 1.858
H2 -0.881 0.000 1.858
H3 0.000 2.203 0.622
H4 0.000 -2.203 0.622
H5 0.000 1.336 -1.883
H6 0.000 -1.336 -1.883
C7 0.000 1.178 0.284
C8 0.000 -1.178 0.284
C9 0.000 0.000 1.210
C10 0.000 0.732 -0.989
C11 0.000 -0.732 -0.989

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.76152.67492.67494.06894.06892.15382.15381.09313.06853.0685
H21.76152.67492.67494.06894.06892.15382.15381.09313.06853.0685
H32.67492.67494.40562.65094.33581.07873.39782.28002.18113.3481
H42.67492.67494.40564.33582.65093.39781.07872.28003.34812.1811
H54.06894.06892.65094.33582.67212.17363.31983.36991.07912.2535
H64.06894.06894.33582.65092.67213.31982.17363.36992.25351.0791
C72.15382.15381.07873.39782.17363.31982.35641.49841.34932.2961
C82.15382.15383.39781.07873.31982.17362.35641.49842.29611.3493
C91.09311.09312.28002.28003.36993.36991.49841.49842.31802.3180
C103.06853.06852.18113.34811.07912.25351.34932.29612.31801.4647
C113.06853.06853.34812.18112.25351.07912.29611.34932.31801.4647

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 107.365 H1 C9 C7 111.465
H1 C9 C8 111.465 H2 C9 C7 111.465
H2 C9 C8 111.465 H3 C7 C9 123.615
H3 C7 C10 127.521 H4 C8 C9 123.615
H4 C8 C11 127.521 H5 C10 C7 126.684
H5 C10 C11 124.020 H6 C11 C8 126.684
H6 C11 C10 124.020 C7 C9 C8 103.680
C7 C10 C11 109.296 C8 C11 C10 109.296
C9 C7 C10 108.864 C9 C8 C11 108.864
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability