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

using model chemistry: CID/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-192.690766
Energy at 298.15K-192.698159
HF Energy-192.296072
Nuclear repulsion energy162.269186
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 CID/3-21G
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 3316 3089 7.57      
2 A1 3260 3037 7.45      
3 A1 3128 2914 26.83      
4 A1 1608 1498 3.68      
5 A1 1532 1427 0.03      
6 A1 1331 1240 1.03      
7 A1 1154 1075 2.37      
8 A1 1043 972 0.11      
9 A1 906 844 1.69      
10 A1 848 790 0.01      
11 A2 3143 2928 0.00      
12 A2 1319 1229 0.00      
13 A2 1058 985 0.00      
14 A2 637 593 0.00      
15 A2 137 128 0.00      
16 B1 3164 2947 39.40      
17 B1 1233 1149 1.69      
18 B1 986 919 8.33      
19 B1 856 797 1.07      
20 B1 625 582 70.62      
21 B1 439 409 9.07      
22 B2 3302 3076 8.00      
23 B2 3115 2902 25.45      
24 B2 1587 1478 0.92      
25 B2 1453 1353 10.96      
26 B2 1404 1308 1.17      
27 B2 1325 1235 4.04      
28 B2 1117 1041 0.36      
29 B2 901 840 8.16      
30 B2 763 711 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 23344.1 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 21747.3 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 CID/3-21G
ABC
0.25845 0.24981 0.13336

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.274
C2 0.000 1.152 0.516
C3 0.000 -1.152 0.516
C4 0.000 0.784 -0.979
C5 0.000 -0.784 -0.979
H6 0.000 0.000 2.356
H7 0.000 2.207 0.738
H8 0.000 -2.207 0.738
H9 0.884 1.186 -1.481
H10 -0.884 1.186 -1.481
H11 0.884 -1.186 -1.481
H12 -0.884 -1.186 -1.481

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.37871.37872.38532.38531.08192.27102.27103.12743.12743.12743.1274
C21.37872.30341.53922.44582.17061.07813.36582.18472.18473.19923.1992
C31.37872.30342.44581.53922.17063.36581.07813.19923.19922.18472.1847
C42.38531.53922.44581.56843.42552.22933.44851.09341.09342.21702.2170
C52.38532.44581.53921.56843.42553.44852.22932.21702.21701.09341.0934
H61.08192.17062.17063.42553.42552.73652.73654.11254.11254.11254.1125
H72.27101.07813.36582.22933.44852.73654.41362.59802.59804.14924.1492
H82.27103.36581.07813.44852.22932.73654.41364.14924.14922.59802.5980
H93.12742.18473.19921.09342.21704.11252.59804.14921.76822.37142.9580
H103.12742.18473.19921.09342.21704.11252.59804.14921.76822.95802.3714
H113.12743.19922.18472.21701.09344.11254.14922.59802.37142.95801.7682
H123.12743.19922.18472.21701.09344.11254.14922.59802.95802.37141.7682

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 109.539 C1 C2 H7 134.781
C1 C3 C5 109.539 C1 C3 H8 134.781
C2 C1 C3 113.298 C2 C1 H6 123.351
C2 C4 C5 103.812 C2 C4 H9 111.033
C2 C4 H10 111.033 C3 C1 H6 123.351
C3 C5 C4 103.812 C3 C5 H11 111.033
C3 C5 H12 111.033 C4 C2 H7 115.680
C4 C5 H11 111.541 C4 C5 H12 111.541
C5 C3 H8 115.680 C5 C4 H9 111.541
C5 C4 H10 111.541 H9 C4 H10 107.905
H11 C5 H12 107.905
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability