return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-194.421867
Energy at 298.15K-194.428947
HF Energy-194.421867
Nuclear repulsion energy162.364396
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 PBEPBE/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3168 3150 6.88      
2 A1 3111 3093 12.06      
3 A1 2944 2927 32.61      
4 A1 1451 1442 0.12      
5 A1 1400 1392 8.18      
6 A1 1233 1225 0.64      
7 A1 1064 1058 3.78      
8 A1 1023 1017 0.05      
9 A1 905 900 5.31      
10 A1 787 783 0.32      
11 A2 2949 2932 0.00      
12 A2 1165 1158 0.00      
13 A2 938 932 0.00      
14 A2 590 587 0.00      
15 A2 110 110 0.00      
16 B1 2969 2951 37.54      
17 B1 1088 1081 1.77      
18 B1 917 912 3.64      
19 B1 767 762 1.04      
20 B1 585 581 45.65      
21 B1 412 409 8.30      
22 B2 3158 3140 7.86      
23 B2 2929 2912 35.43      
24 B2 1424 1416 0.01      
25 B2 1369 1361 3.24      
26 B2 1271 1263 4.57      
27 B2 1236 1229 1.93      
28 B2 1041 1035 1.54      
29 B2 904 898 17.26      
30 B2 702 698 0.22      

Unscaled Zero Point Vibrational Energy (zpe) 21803.0 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 21676.6 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 PBEPBE/cc-pVDZ
ABC
0.25804 0.25298 0.13416

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.274
C2 0.000 1.154 0.505
C3 0.000 -1.154 0.505
C4 0.000 0.774 -0.963
C5 0.000 -0.774 -0.963
H6 0.000 0.000 2.376
H7 0.000 2.230 0.720
H8 0.000 -2.230 0.720
H9 0.884 1.198 -1.491
H10 -0.884 1.198 -1.491
H11 0.884 -1.198 -1.491
H12 -0.884 -1.198 -1.491

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.38731.38732.36732.36731.10132.29812.29813.14103.14103.14103.1410
C21.38732.30861.51622.42352.19821.09723.39142.18372.18373.20943.2094
C31.38732.30862.42351.51622.19823.39141.09723.20943.20942.18372.1837
C42.36731.51622.42351.54833.42712.22523.44351.11411.11412.22522.2252
C52.36732.42351.51621.54833.42713.44352.22522.22522.22521.11411.1141
H61.10132.19822.19823.42713.42712.77772.77774.14374.14374.14374.1437
H72.29811.09723.39142.22523.44352.77774.46052.59542.59544.17424.1742
H82.29813.39141.09723.44352.22522.77774.46054.17424.17422.59542.5954
H93.14102.18373.20941.11412.22524.14372.59544.17421.76892.39632.9785
H103.14102.18373.20941.11412.22524.14372.59544.17421.76892.97852.3963
H113.14103.20942.18372.22521.11414.14374.17422.59542.39632.97851.7689
H123.14103.20942.18372.22521.11414.14374.17422.59542.97852.39631.7689

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 109.165 C1 C2 H7 135.018
C1 C3 C5 109.165 C1 C3 H8 135.018
C2 C1 C3 112.628 C2 C1 H6 123.686
C2 C4 C5 104.521 C2 C4 H9 111.324
C2 C4 H10 111.324 C3 C1 H6 123.686
C3 C5 C4 104.521 C3 C5 H11 111.324
C3 C5 H12 111.324 C4 C2 H7 115.817
C4 C5 H11 112.369 C4 C5 H12 112.369
C5 C3 H8 115.817 C5 C4 H9 112.369
C5 C4 H10 112.369 H9 C4 H10 105.104
H11 C5 H12 105.104
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.078      
2 C -0.059      
3 C -0.059      
4 C -0.025      
5 C -0.025      
6 H -0.022      
7 H -0.017      
8 H -0.017      
9 H 0.037      
10 H 0.037      
11 H 0.037      
12 H 0.037      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.464 0.464
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.525 0.000 0.000
y 0.000 -29.098 0.000
z 0.000 0.000 -30.160
Traceless
 xyz
x -2.895 0.000 0.000
y 0.000 2.244 0.000
z 0.000 0.000 0.652
Polar
3z2-r21.304
x2-y2-3.426
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.974 0.000 0.000
y 0.000 9.799 0.000
z 0.000 0.000 8.690


<r2> (average value of r2) Å2
<r2> 100.610
(<r2>)1/2 10.030