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

using model chemistry: CISD/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 CISD/6-31G
 hartrees
Energy at 0K-193.694091
Energy at 298.15K-193.701480
HF Energy-193.297729
Nuclear repulsion energy162.207693
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 CISD/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 3306 3100 11.64      
2 A1 3251 3049 10.93      
3 A1 3095 2903 41.41      
4 A1 1597 1498 3.03      
5 A1 1544 1448 0.04      
6 A1 1347 1263 0.53      
7 A1 1159 1087 2.09      
8 A1 1070 1004 0.14      
9 A1 934 876 2.23      
10 A1 847 794 0.06      
11 A2 3104 2911 0.00      
12 A2 1299 1218 0.00      
13 A2 1073 1006 0.00      
14 A2 625 586 0.00      
15 A2 137 129 0.00      
16 B1 3126 2932 62.46      
17 B1 1204 1129 2.52      
18 B1 958 898 8.20      
19 B1 869 815 0.75      
20 B1 618 580 66.17      
21 B1 437 410 8.25      
22 B2 3291 3087 16.11      
23 B2 3078 2887 38.23      
24 B2 1579 1480 0.65      
25 B2 1465 1374 6.94      
26 B2 1401 1314 0.21      
27 B2 1358 1274 4.19      
28 B2 1135 1064 0.45      
29 B2 936 877 8.59      
30 B2 760 713 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 23301.0 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 21851.7 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 CISD/6-31G
ABC
0.25824 0.25022 0.13336

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.279
C2 0.000 1.154 0.512
C3 0.000 -1.154 0.512
C4 0.000 0.780 -0.974
C5 0.000 -0.780 -0.974
H6 0.000 0.000 2.364
H7 0.000 2.215 0.727
H8 0.000 -2.215 0.727
H9 0.880 1.188 -1.488
H10 -0.880 1.188 -1.488
H11 0.880 -1.188 -1.488
H12 -0.880 -1.188 -1.488

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.38531.38532.38412.38411.08542.28232.28233.13693.13693.13693.1369
C21.38532.30801.53272.43952.18191.08223.37552.18552.18553.20353.2035
C31.38532.30802.43951.53272.18193.37551.08223.20353.20352.18552.1855
C42.38411.53272.43951.56073.42822.22523.44451.09771.09772.21692.2169
C52.38412.43951.53271.56073.42823.44452.22522.21692.21691.09771.0977
H61.08542.18192.18193.42823.42822.75392.75394.12604.12604.12604.1260
H72.28231.08223.37552.22523.44452.75394.42932.59492.59494.15474.1547
H82.28233.37551.08223.44452.22522.75394.42934.15474.15472.59492.5949
H93.13692.18553.20351.09772.21694.12602.59494.15471.76032.37702.9578
H103.13692.18553.20351.09772.21694.12602.59494.15471.76032.95782.3770
H113.13693.20352.18552.21691.09774.12604.15472.59492.37702.95781.7603
H123.13693.20352.18552.21691.09774.12604.15472.59492.95782.37701.7603

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 109.475 C1 C2 H7 134.966
C1 C3 C5 109.475 C1 C3 H8 134.966
C2 C1 C3 112.829 C2 C1 H6 123.585
C2 C4 C5 104.110 C2 C4 H9 111.292
C2 C4 H10 111.292 C3 C1 H6 123.585
C3 C5 C4 104.110 C3 C5 H11 111.292
C3 C5 H12 111.292 C4 C2 H7 115.559
C4 C5 H11 111.827 C4 C5 H12 111.827
C5 C3 H8 115.559 C5 C4 H9 111.827
C5 C4 H10 111.827 H9 C4 H10 106.601
H11 C5 H12 106.601
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability