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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-194.171998
Energy at 298.15K-194.179317
HF Energy-193.391969
Nuclear repulsion energy164.521786
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/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 3320 3120 5.36      
2 A1 3259 3063 6.59      
3 A1 3106 2919 24.12      
4 A1 1549 1455 0.05      
5 A1 1524 1432 3.19      
6 A1 1310 1231 0.42      
7 A1 1142 1074 3.28      
8 A1 1077 1012 0.02      
9 A1 952 895 2.56      
10 A1 827 777 0.30      
11 A2 3134 2946 0.00      
12 A2 1270 1194 0.00      
13 A2 1017 956 0.00      
14 A2 663 624 0.00      
15 A2 94 88 0.00      
16 B1 3152 2962 25.33      
17 B1 1181 1110 3.17      
18 B1 1032 970 3.17      
19 B1 829 780 3.68      
20 B1 650 611 48.58      
21 B1 443 417 7.00      
22 B2 3307 3109 2.17      
23 B2 3096 2910 23.68      
24 B2 1503 1413 0.74      
25 B2 1407 1323 9.28      
26 B2 1324 1244 0.05      
27 B2 1311 1232 4.13      
28 B2 1088 1023 0.18      
29 B2 932 876 16.52      
30 B2 727 683 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 23113.0 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 21723.9 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 MP2=FULL/6-31G(2df,p)
ABC
0.26582 0.25811 0.13753

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.256
C2 0.000 1.135 0.503
C3 0.000 -1.135 0.503
C4 0.000 0.768 -0.958
C5 0.000 -0.768 -0.958
H6 0.000 0.000 2.338
H7 0.000 2.187 0.732
H8 0.000 -2.187 0.732
H9 0.874 1.180 -1.468
H10 -0.874 1.180 -1.468
H11 0.874 -1.180 -1.468
H12 -0.874 -1.180 -1.468

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.36201.36202.34332.34331.08212.24942.24943.09483.09483.09483.0948
C21.36202.26971.50602.39922.15771.07733.33022.15672.15673.16363.1636
C31.36202.26972.39921.50602.15773.33021.07733.16363.16362.15672.1567
C42.34331.50602.39921.53683.38422.20663.40481.09251.09252.19562.1956
C52.34332.39921.50601.53683.38423.40482.20662.19562.19561.09251.0925
H61.08212.15772.15773.38423.38422.71382.71384.07984.07984.07984.0798
H72.24941.07733.33022.20663.40482.71384.37502.57282.57284.11654.1165
H82.24943.33021.07733.40482.20662.71384.37504.11654.11652.57282.5728
H93.09482.15673.16361.09252.19564.07982.57284.11651.74752.36032.9368
H103.09482.15673.16361.09252.19564.07982.57284.11651.74752.93682.3603
H113.09483.16362.15672.19561.09254.07984.11652.57282.36032.93681.7475
H123.09483.16362.15672.19561.09254.07984.11652.57282.93682.36031.7475

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 109.484 C1 C2 H7 134.157
C1 C3 C5 109.484 C1 C3 H8 134.157
C2 C1 C3 112.864 C2 C1 H6 123.568
C2 C4 C5 104.084 C2 C4 H9 111.194
C2 C4 H10 111.194 C3 C1 H6 123.568
C3 C5 C4 104.084 C3 C5 H11 111.194
C3 C5 H12 111.194 C4 C2 H7 116.359
C4 C5 H11 112.140 C4 C5 H12 112.140
C5 C3 H8 116.359 C5 C4 H9 112.140
C5 C4 H10 112.140 H9 C4 H10 106.215
H11 C5 H12 106.215
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability