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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-192.702920
Energy at 298.15K-192.710268
HF Energy-192.295622
Nuclear repulsion energy162.016165
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 MP2/3-21G
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 3283 3134 6.89      
2 A1 3223 3076 7.43      
3 A1 3091 2950 22.19      
4 A1 1591 1519 3.18      
5 A1 1520 1451 0.02      
6 A1 1300 1241 0.84      
7 A1 1153 1100 2.78      
8 A1 1025 978 0.01      
9 A1 892 852 2.02      
10 A1 835 797 0.03      
11 A2 3113 2971 0.00      
12 A2 1294 1235 0.00      
13 A2 1044 996 0.00      
14 A2 628 599 0.00      
15 A2 135 129 0.00      
16 B1 3133 2991 35.02      
17 B1 1212 1157 1.91      
18 B1 983 938 8.34      
19 B1 850 811 0.82      
20 B1 625 596 68.89      
21 B1 441 421 10.66      
22 B2 3270 3121 6.02      
23 B2 3080 2940 22.74      
24 B2 1571 1500 0.69      
25 B2 1425 1361 10.97      
26 B2 1380 1317 2.45      
27 B2 1288 1229 4.49      
28 B2 1096 1046 0.43      
29 B2 886 846 9.56      
30 B2 749 715 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 23058.1 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 22009.0 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 MP2/3-21G
ABC
0.25766 0.24906 0.13298

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

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 0.518
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 2.210 0.742
H8 0.000 -2.210 0.742
H9 0.887 1.189 -1.485
H10 -0.887 1.189 -1.485
H11 0.887 -1.189 -1.485
H12 -0.887 -1.189 -1.485

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.37791.37792.38742.38741.08542.27292.27293.13193.13193.13193.1319
C21.37792.30441.54232.45032.17191.08123.36952.19062.19063.20603.2060
C31.37792.30442.45031.54232.17193.36951.08123.20603.20602.19062.1906
C42.38741.54232.45031.57323.43082.23453.45631.09681.09682.22352.2235
C52.38742.45031.54231.57323.43083.45632.23452.22352.22351.09681.0968
H61.08542.17192.17193.43083.43082.73822.73824.12004.12004.12004.1200
H72.27291.08123.36952.23453.45632.73824.41972.60542.60544.15904.1590
H82.27293.36951.08123.45632.23452.73824.41974.15904.15902.60542.6054
H93.13192.19063.20601.09682.22354.12002.60544.15901.77412.37782.9667
H103.13192.19063.20601.09682.22354.12002.60544.15901.77412.96672.3778
H113.13193.20602.19062.22351.09684.12004.15902.60542.37782.96671.7741
H123.13193.20602.19062.22351.09684.12004.15902.60542.96672.37781.7741

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 109.549 C1 C2 H7 134.769
C1 C3 C5 109.549 C1 C3 H8 134.769
C2 C1 C3 113.479 C2 C1 H6 123.261
C2 C4 C5 103.712 C2 C4 H9 111.084
C2 C4 H10 111.084 C3 C1 H6 123.261
C3 C5 C4 103.712 C3 C5 H11 111.084
C3 C5 H12 111.084 C4 C2 H7 115.682
C4 C5 H11 111.518 C4 C5 H12 111.518
C5 C3 H8 115.682 C5 C4 H9 111.518
C5 C4 H10 111.518 H9 C4 H10 107.947
H11 C5 H12 107.947
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability