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

using model chemistry: QCISD/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 QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-194.190620
Energy at 298.15K-194.197831
HF Energy-193.392381
Nuclear repulsion energy163.275452
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(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 3278 3106 7.28      
2 A1 3226 3056 8.55      
3 A1 3076 2914 31.83      
4 A1 1527 1446 2.23      
5 A1 1508 1429 0.15      
6 A1 1314 1245 0.17      
7 A1 1119 1061 2.42      
8 A1 1057 1002 0.04      
9 A1 934 885 1.82      
10 A1 816 773 0.24      
11 A2 3090 2927 0.00      
12 A2 1257 1190 0.00      
13 A2 1010 957 0.00      
14 A2 612 580 0.00      
15 A2 94 89 0.00      
16 B1 3109 2946 39.29      
17 B1 1161 1100 2.62      
18 B1 964 913 4.47      
19 B1 818 775 1.89      
20 B1 610 578 45.22      
21 B1 413 391 6.90      
22 B2 3267 3095 5.88      
23 B2 3063 2902 28.37      
24 B2 1503 1424 0.32      
25 B2 1428 1353 3.62      
26 B2 1333 1263 3.33      
27 B2 1326 1256 1.55      
28 B2 1095 1038 0.74      
29 B2 931 882 10.36      
30 B2 724 686 0.27      

Unscaled Zero Point Vibrational Energy (zpe) 22831.6 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 21630.6 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(2df,p)
ABC
0.26146 0.25425 0.13530

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.269
C2 0.000 1.147 0.506
C3 0.000 -1.147 0.506
C4 0.000 0.773 -0.965
C5 0.000 -0.773 -0.965
H6 0.000 0.000 2.354
H7 0.000 2.205 0.724
H8 0.000 -2.205 0.724
H9 0.876 1.185 -1.478
H10 -0.876 1.185 -1.478
H11 0.876 -1.185 -1.478
H12 -0.876 -1.185 -1.478

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.37781.37782.36422.36421.08432.27142.27143.11803.11803.11803.1180
C21.37782.29401.51772.41872.17471.08033.35912.16952.16953.18503.1850
C31.37782.29402.41871.51772.17473.35911.08033.18503.18502.16952.1695
C42.36421.51772.41871.54623.40742.21453.42381.09581.09582.20582.2058
C52.36422.41871.51771.54623.40743.42382.21452.20582.20581.09581.0958
H61.08432.17472.17473.40743.40742.74172.74174.10574.10574.10574.1057
H72.27141.08033.35912.21453.42382.74174.41012.58072.58074.13674.1367
H82.27143.35911.08033.42382.21452.74174.41014.13674.13672.58072.5807
H93.11802.16953.18501.09582.20584.10572.58074.13671.75202.37012.9474
H103.11802.16953.18501.09582.20584.10572.58074.13671.75202.94742.3701
H113.11803.18502.16952.20581.09584.10574.13672.58072.37012.94741.7520
H123.11803.18502.16952.20581.09584.10574.13672.58072.94742.37011.7520

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 109.379 C1 C2 H7 134.698
C1 C3 C5 109.379 C1 C3 H8 134.698
C2 C1 C3 112.715 C2 C1 H6 123.642
C2 C4 C5 104.263 C2 C4 H9 111.198
C2 C4 H10 111.198 C3 C1 H6 123.642
C3 C5 C4 104.263 C3 C5 H11 111.198
C3 C5 H12 111.198 C4 C2 H7 115.923
C4 C5 H11 112.083 C4 C5 H12 112.083
C5 C3 H8 115.923 C5 C4 H9 112.083
C5 C4 H10 112.083 H9 C4 H10 106.143
H11 C5 H12 106.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability