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All results from a given calculation for C5H7 (cyclopentenyl radical)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-194.130909
Energy at 298.15K-194.138194
HF Energy-193.392170
Nuclear repulsion energy164.056010
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 MP2/6-31G(2df,p)
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 3309 3126 5.44      
2 A1 3249 3068 6.77      
3 A1 3097 2925 24.66      
4 A1 1543 1457 0.03      
5 A1 1515 1431 2.91      
6 A1 1301 1229 0.36      
7 A1 1138 1075 3.19      
8 A1 1066 1007 0.03      
9 A1 943 891 2.42      
10 A1 822 777 0.28      
11 A2 3124 2951 0.00      
12 A2 1249 1179 0.00      
13 A2 1010 954 0.00      
14 A2 660 623 0.00      
15 A2 90 85 0.00      
16 B1 3142 2967 26.32      
17 B1 1163 1098 3.54      
18 B1 1029 972 2.99      
19 B1 824 778 3.71      
20 B1 649 613 48.50      
21 B1 437 413 6.93      
22 B2 3297 3114 2.18      
23 B2 3087 2916 24.01      
24 B2 1493 1410 0.59      
25 B2 1402 1324 8.90      
26 B2 1321 1248 0.18      
27 B2 1301 1229 4.17      
28 B2 1082 1022 0.22      
29 B2 925 873 15.79      
30 B2 722 682 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 22993.9 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 21717.7 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 MP2/6-31G(2df,p)
ABC
0.26429 0.25658 0.13670

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.259
C2 0.000 1.138 0.505
C3 0.000 -1.138 0.505
C4 0.000 0.771 -0.961
C5 0.000 -0.771 -0.961
H6 0.000 0.000 2.343
H7 0.000 2.193 0.733
H8 0.000 -2.193 0.733
H9 0.875 1.184 -1.473
H10 -0.875 1.184 -1.473
H11 0.875 -1.184 -1.473
H12 -0.875 -1.184 -1.473

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.36521.36522.35022.35021.08382.25492.25493.10383.10383.10383.1038
C21.36522.27631.51142.40722.16161.07893.33872.16372.16373.17373.1737
C31.36522.27632.40721.51142.16163.33871.07893.17373.17372.16372.1637
C42.35021.51142.40721.54203.39272.21163.41381.09471.09472.20242.2024
C52.35022.40721.51141.54203.39273.41382.21162.20242.20241.09471.0947
H61.08382.16162.16163.39273.39272.72022.72024.09034.09034.09034.0903
H72.25491.07893.33872.21163.41382.72024.38542.57882.57884.12764.1276
H82.25493.33871.07893.41382.21162.72024.38544.12764.12762.57882.5788
H93.10382.16373.17371.09472.20244.09032.57884.12761.74962.36852.9446
H103.10382.16373.17371.09472.20244.09032.57884.12761.74962.94462.3685
H113.10383.17372.16372.20241.09474.09034.12762.57882.36852.94461.7496
H123.10383.17372.16372.20241.09474.09034.12762.57882.94462.36851.7496

picture of cyclopentenyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 109.466 C1 C2 H7 134.279
C1 C3 C5 109.466 C1 C3 H8 134.279
C2 C1 C3 112.953 C2 C1 H6 123.523
C2 C4 C5 104.057 C2 C4 H9 111.235
C2 C4 H10 111.235 C3 C1 H6 123.523
C3 C5 C4 104.057 C3 C5 H11 111.235
C3 C5 H12 111.235 C4 C2 H7 116.254
C4 C5 H11 112.177 C4 C5 H12 112.177
C5 C3 H8 116.254 C5 C4 H9 112.177
C5 C4 H10 112.177 H9 C4 H10 106.093
H11 C5 H12 106.093
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability