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

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-194.046191
Energy at 298.15K-194.053417
HF Energy-193.369739
Nuclear repulsion energy163.125289
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 MP4/6-31G*
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 3254 3107        
2 A1 3196 3051        
3 A1 3041 2904        
4 A1 1549 1479        
5 A1 1541 1471        
6 A1 1322 1262        
7 A1 1140 1089        
8 A1 1065 1017        
9 A1 935 893        
10 A1 822 785        
11 A2 3058 2920        
12 A2 1254 1197        
13 A2 1027 981        
14 A2 611 584        
15 A2 105 100        
16 B1 3076 2937        
17 B1 1170 1117        
18 B1 959 916        
19 B1 835 797        
20 B1 620 592        
21 B1 418 399        
22 B2 3243 3097        
23 B2 3030 2893        
24 B2 1522 1453        
25 B2 1421 1357        
26 B2 1339 1279        
27 B2 1323 1263        
28 B2 1096 1047        
29 B2 928 886        
30 B2 729 696        

Unscaled Zero Point Vibrational Energy (zpe) 22813.8 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 21782.6 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 MP4/6-31G*
ABC
0.26132 0.25379 0.13521

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.268
C2 0.000 1.145 0.507
C3 0.000 -1.145 0.507
C4 0.000 0.774 -0.965
C5 0.000 -0.774 -0.965
H6 0.000 0.000 2.359
H7 0.000 2.209 0.730
H8 0.000 -2.209 0.730
H9 0.881 1.188 -1.482
H10 -0.881 1.188 -1.482
H11 0.881 -1.188 -1.482
H12 -0.881 -1.188 -1.482

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.37471.37472.36352.36351.09112.27332.27333.12243.12243.12243.1224
C21.37472.29031.51852.41922.17711.08653.36112.17612.17613.19023.1902
C31.37472.29032.41921.51852.17713.36111.08653.19023.19022.17612.1761
C42.36351.51852.41921.54853.41312.22043.43081.10191.10192.21222.2122
C52.36352.41921.51851.54853.41313.43082.22042.21222.21221.10191.1019
H61.09112.17712.17713.41313.41312.74462.74464.11594.11594.11594.1159
H72.27331.08653.36112.22043.43082.74464.41732.59022.59024.14804.1480
H82.27333.36111.08653.43082.22042.74464.41734.14804.14802.59022.5902
H93.12242.17613.19021.10192.21224.11592.59024.14801.76152.37632.9579
H103.12242.17613.19021.10192.21224.11592.59024.14801.76152.95792.3763
H113.12243.19022.17612.21221.10194.11594.14802.59022.37632.95791.7615
H123.12243.19022.17612.21221.10194.11594.14802.59022.95792.37631.7615

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 109.455 C1 C2 H7 134.599
C1 C3 C5 109.455 C1 C3 H8 134.599
C2 C1 C3 112.818 C2 C1 H6 123.591
C2 C4 C5 104.137 C2 C4 H9 111.292
C2 C4 H10 111.292 C3 C1 H6 123.591
C3 C5 C4 104.137 C3 C5 H11 111.292
C3 C5 H12 111.292 C4 C2 H7 115.946
C4 C5 H11 112.063 C4 C5 H12 112.063
C5 C3 H8 115.946 C5 C4 H9 112.063
C5 C4 H10 112.063 H9 C4 H10 106.127
H11 C5 H12 106.127
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability