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

using model chemistry: MP2/STO-3G

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/STO-3G
 hartrees
Energy at 0K-190.747712
Energy at 298.15K-190.753802
HF Energy-190.449768
Nuclear repulsion energy153.870026
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/STO-3G
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 3560 3104 0.02      
2 A1 3530 3078 7.90      
3 A1 3385 2951 0.00      
4 A1 1689 1472 1.61      
5 A1 1666 1453 1.26      
6 A1 1530 1334 2.39      
7 A1 1207 1052 0.25      
8 A1 1078 940 0.97      
9 A1 1003 875 0.75      
10 A1 848 740 0.16      
11 A2 1255 1095 0.00      
12 A2 1008 879 0.00      
13 A2 784 683 0.00      
14 A2 542 473 0.00      
15 B1 3490 3043 0.50      
16 B1 1038 905 1.32      
17 B1 1028 896 0.04      
18 B1 728 635 22.80      
19 B1 365 318 4.48      
20 B2 3551 3096 0.04      
21 B2 3524 3073 2.47      
22 B2 1745 1521 0.55      
23 B2 1449 1263 0.22      
24 B2 1400 1221 0.30      
25 B2 1194 1041 0.35      
26 B2 1069 932 1.04      
27 B2 858 748 1.54      

Unscaled Zero Point Vibrational Energy (zpe) 22261.8 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 19410.1 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/STO-3G
ABC
0.27225 0.26447 0.13768

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.894 0.000 1.906
H2 -0.894 0.000 1.906
H3 0.000 2.246 0.617
H4 0.000 -2.246 0.617
H5 0.000 1.370 -1.915
H6 0.000 -1.370 -1.915
C7 0.000 1.200 0.280
C8 0.000 -1.200 0.280
C9 0.000 0.000 1.249
C10 0.000 0.753 -1.005
C11 0.000 -0.753 -1.005

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.78812.73902.73904.15594.15592.20982.20981.10923.13693.1369
H21.78812.73902.73904.15594.15592.20982.20981.10923.13693.1369
H32.73902.73904.49112.67914.41361.09853.46212.33282.20423.4095
H42.73902.73904.49114.41362.67913.46211.09852.33283.40952.2042
H54.15594.15592.67914.41362.73932.20113.37943.44771.09882.3096
H64.15594.15594.41362.67912.73933.37942.20113.44772.30961.0988
C72.20982.20981.09853.46212.20113.37942.40021.54271.36052.3382
C82.20982.20983.46211.09853.37942.20112.40021.54272.33821.3605
C91.10921.10922.33282.33283.44773.44771.54271.54272.37692.3769
C103.13693.13692.20423.40951.09882.30961.36052.33822.37691.5066
C113.13693.13693.40952.20422.30961.09882.33821.36052.37691.5066

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 107.416 H1 C9 C7 111.834
H1 C9 C8 111.834 H2 C9 C7 111.834
H2 C9 C8 111.834 H3 C7 C9 123.191
H3 C7 C10 127.056 H4 C8 C9 123.191
H4 C8 C11 127.056 H5 C10 C7 126.703
H5 C10 C11 124.122 H6 C11 C8 126.703
H6 C11 C10 124.122 C7 C9 C8 102.144
C7 C10 C11 109.175 C8 C11 C10 109.175
C9 C7 C10 109.753 C9 C8 C11 109.753
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability