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

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-194.099559
Energy at 298.15K-194.106665
HF Energy-193.403269
Nuclear repulsion energy162.771104
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/6-311G*
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 3228 3091 11.39      
2 A1 3182 3046 11.13      
3 A1 3032 2903 40.80      
4 A1 1530 1465 4.73      
5 A1 1505 1441 0.01      
6 A1 1318 1262 0.61      
7 A1 1113 1066 3.16      
8 A1 1057 1012 0.25      
9 A1 932 892 2.75      
10 A1 817 782 0.15      
11 A2 3043 2913 0.00      
12 A2 1255 1202 0.00      
13 A2 1012 969 0.00      
14 A2 578 553 0.00      
15 A2 75 72 0.00      
16 B1 3064 2933 53.53      
17 B1 1168 1118 2.94      
18 B1 906 868 10.08      
19 B1 813 778 1.08      
20 B1 582 557 64.31      
21 B1 401 384 10.77      
22 B2 3217 3080 13.10      
23 B2 3019 2890 35.66      
24 B2 1505 1441 1.14      
25 B2 1427 1366 5.08      
26 B2 1331 1274 4.61      
27 B2 1323 1267 2.22      
28 B2 1086 1039 0.92      
29 B2 927 887 12.63      
30 B2 727 696 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 22584.0 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 21621.9 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/6-311G*
ABC
0.25981 0.25286 0.13453

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.274
C2 0.000 1.151 0.507
C3 0.000 -1.151 0.507
C4 0.000 0.774 -0.967
C5 0.000 -0.774 -0.967
H6 0.000 0.000 2.363
H7 0.000 2.216 0.722
H8 0.000 -2.216 0.722
H9 0.880 1.187 -1.482
H10 -0.880 1.187 -1.482
H11 0.880 -1.187 -1.482
H12 -0.880 -1.187 -1.482

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.38351.38352.37082.37081.08922.28332.28333.12703.12703.12703.1270
C21.38352.30281.52142.42462.18441.08583.37392.17502.17503.19343.1934
C31.38352.30282.42461.52142.18443.37391.08583.19343.19342.17502.1750
C42.37081.52142.42461.54773.41892.22073.43361.09991.09992.21012.2101
C52.37082.42461.52141.54773.41893.43362.22072.21012.21011.09991.0999
H61.08922.18442.18443.41893.41892.75722.75724.11924.11924.11924.1192
H72.28331.08583.37392.22073.43362.75724.43122.58642.58644.14854.1485
H82.28333.37391.08583.43362.22072.75724.43124.14854.14852.58642.5864
H93.12702.17503.19341.09992.21014.11922.58644.14851.75942.37422.9550
H103.12702.17503.19341.09992.21014.11922.58644.14851.75942.95502.3742
H113.12703.19342.17502.21011.09994.11924.14852.58642.37422.95501.7594
H123.12703.19342.17502.21011.09994.11924.14852.58642.95502.37421.7594

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 109.305 C1 C2 H7 134.892
C1 C3 C5 109.305 C1 C3 H8 134.892
C2 C1 C3 112.653 C2 C1 H6 123.673
C2 C4 C5 104.369 C2 C4 H9 111.120
C2 C4 H10 111.120 C3 C1 H6 123.673
C3 C5 C4 104.369 C3 C5 H11 111.120
C3 C5 H12 111.120 C4 C2 H7 115.804
C4 C5 H11 112.068 C4 C5 H12 112.068
C5 C3 H8 115.804 C5 C4 H9 112.068
C5 C4 H10 112.068 H9 C4 H10 106.216
H11 C5 H12 106.216
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability