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

using model chemistry: QCISD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-194.089523
Energy at 298.15K-194.096708
HF Energy-193.382280
Nuclear repulsion energy163.212170
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 QCISD/6-31G**
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 3301 3108 9.77      
2 A1 3253 3062 11.84      
3 A1 3096 2914 40.56      
4 A1 1556 1465 1.21      
5 A1 1535 1445 0.30      
6 A1 1337 1259 0.01      
7 A1 1132 1066 1.74      
8 A1 1067 1004 0.01      
9 A1 940 885 1.58      
10 A1 821 773 0.18      
11 A2 3112 2930 0.00      
12 A2 1269 1194 0.00      
13 A2 1025 965 0.00      
14 A2 594 559 0.00      
15 A2 90 85 0.00      
16 B1 3131 2948 56.88      
17 B1 1175 1107 2.33      
18 B1 934 879 6.24      
19 B1 833 784 1.17      
20 B1 598 563 45.37      
21 B1 400 377 8.26      
22 B2 3290 3097 12.27      
23 B2 3083 2902 35.84      
24 B2 1532 1443 0.07      
25 B2 1457 1372 2.52      
26 B2 1359 1280 2.74      
27 B2 1346 1267 1.98      
28 B2 1108 1043 0.75      
29 B2 939 884 8.64      
30 B2 732 690 0.25      

Unscaled Zero Point Vibrational Energy (zpe) 23022.3 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 21673.2 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 QCISD/6-31G**
ABC
0.26118 0.25406 0.13517

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.272
C2 0.000 1.149 0.505
C3 0.000 -1.149 0.505
C4 0.000 0.773 -0.965
C5 0.000 -0.773 -0.965
H6 0.000 0.000 2.355
H7 0.000 2.207 0.721
H8 0.000 -2.207 0.721
H9 0.876 1.182 -1.478
H10 -0.876 1.182 -1.478
H11 0.876 -1.182 -1.478
H12 -0.876 -1.182 -1.478

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.38081.38082.36632.36631.08312.27452.27453.11883.11883.11883.1188
C21.38082.29751.51772.41952.17711.07973.36242.16862.16863.18383.1838
C31.38082.29752.41951.51772.17713.36241.07973.18383.18382.16862.1686
C42.36631.51772.41951.54553.40852.21313.42331.09451.09452.20292.2029
C52.36632.41951.51771.54553.40853.42332.21312.20292.20291.09451.0945
H61.08312.17712.17713.40853.40852.74592.74594.10584.10584.10584.1058
H72.27451.07973.36242.21313.42332.74594.41342.57902.57904.13394.1339
H82.27453.36241.07973.42332.21312.74594.41344.13394.13392.57902.5790
H93.11882.16863.18381.09452.20294.10582.57904.13391.75112.36502.9427
H103.11882.16863.18381.09452.20294.10582.57904.13391.75112.94272.3650
H113.11883.18382.16862.20291.09454.10584.13392.57902.36502.94271.7511
H123.11883.18382.16862.20291.09454.10584.13392.57902.94272.36501.7511

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 109.359 C1 C2 H7 134.794
C1 C3 C5 109.359 C1 C3 H8 134.794
C2 C1 C3 112.593 C2 C1 H6 123.704
C2 C4 C5 104.345 C2 C4 H9 111.202
C2 C4 H10 111.202 C3 C1 H6 123.704
C3 C5 C4 104.345 C3 C5 H11 111.202
C3 C5 H12 111.202 C4 C2 H7 115.847
C4 C5 H11 111.985 C4 C5 H12 111.985
C5 C3 H8 115.847 C5 C4 H9 111.985
C5 C4 H10 111.985 H9 C4 H10 106.244
H11 C5 H12 106.244
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability