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

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G*
 hartrees
Energy at 0K-192.711218
Energy at 298.15K-192.718555
HF Energy-192.295644
Nuclear repulsion energy162.043689
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 MP2=FULL/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 3284 3113 6.85      
2 A1 3224 3056 7.41      
3 A1 3091 2931 22.06      
4 A1 1591 1508 3.22      
5 A1 1521 1442 0.02      
6 A1 1300 1233 0.85      
7 A1 1153 1093 2.80      
8 A1 1025 972 0.01      
9 A1 893 846 2.04      
10 A1 836 792 0.02      
11 A2 3114 2952 0.00      
12 A2 1294 1227 0.00      
13 A2 1044 990 0.00      
14 A2 630 597 0.00      
15 A2 135 128 0.00      
16 B1 3134 2971 34.80      
17 B1 1213 1150 1.92      
18 B1 985 933 8.28      
19 B1 850 805 0.86      
20 B1 626 593 69.04      
21 B1 442 419 10.55      
22 B2 3271 3101 5.94      
23 B2 3081 2921 22.64      
24 B2 1571 1489 0.70      
25 B2 1426 1352 11.00      
26 B2 1380 1308 2.49      
27 B2 1288 1221 4.50      
28 B2 1096 1039 0.42      
29 B2 886 840 9.59      
30 B2 750 711 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 23064.3 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 21865.0 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 MP2=FULL/3-21G*
ABC
0.25773 0.24917 0.13303

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.273
C2 0.000 1.152 0.518
C3 0.000 -1.152 0.518
C4 0.000 0.787 -0.980
C5 0.000 -0.787 -0.980
H6 0.000 0.000 2.359
H7 0.000 2.209 0.742
H8 0.000 -2.209 0.742
H9 0.887 1.189 -1.484
H10 -0.887 1.189 -1.484
H11 0.887 -1.189 -1.484
H12 -0.887 -1.189 -1.484

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.37761.37762.38682.38681.08522.27242.27243.13133.13133.13133.1313
C21.37762.30401.54192.44992.17151.08103.36902.19022.19023.20553.2055
C31.37762.30402.44991.54192.17153.36901.08103.20553.20552.19022.1902
C42.38681.54192.44991.57313.43012.23423.45591.09671.09672.22332.2233
C52.38682.44991.54191.57313.43013.45592.23422.22332.22331.09671.0967
H61.08522.17152.17153.43013.43012.73762.73764.11934.11934.11934.1193
H72.27241.08103.36902.23423.45592.73764.41902.60512.60514.15854.1585
H82.27243.36901.08103.45592.23422.73764.41904.15854.15852.60512.6051
H93.13132.19023.20551.09672.22334.11932.60514.15851.77382.37772.9664
H103.13132.19023.20551.09672.22334.11932.60514.15851.77382.96642.3777
H113.13133.20552.19022.22331.09674.11934.15852.60512.37772.96641.7738
H123.13133.20552.19022.22331.09674.11934.15852.60512.96642.37771.7738

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 109.546 C1 C2 H7 134.760
C1 C3 C5 109.546 C1 C3 H8 134.760
C2 C1 C3 113.487 C2 C1 H6 123.257
C2 C4 C5 103.711 C2 C4 H9 111.084
C2 C4 H10 111.084 C3 C1 H6 123.257
C3 C5 C4 103.711 C3 C5 H11 111.084
C3 C5 H12 111.084 C4 C2 H7 115.693
C4 C5 H11 111.519 C4 C5 H12 111.519
C5 C3 H8 115.693 C5 C4 H9 111.519
C5 C4 H10 111.519 H9 C4 H10 107.945
H11 C5 H12 107.945
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability