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

using model chemistry: HF/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-31.478274
Energy at 298.15K-31.485567
HF Energy-31.478274
Nuclear repulsion energy86.497844
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 HF/CEP-121G*
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 3376 3050 19.11      
2 A1 3335 3013 16.50      
3 A1 3186 2879 80.05      
4 A1 1638 1480 1.21      
5 A1 1558 1408 0.07      
6 A1 1415 1278 0.03      
7 A1 1149 1038 1.41      
8 A1 1084 979 0.62      
9 A1 960 867 1.00      
10 A1 850 768 0.02      
11 A2 3189 2881 0.00      
12 A2 1348 1218 0.00      
13 A2 1079 975 0.00      
14 A2 590 533 0.00      
15 A2 97 87 0.00      
16 B1 3215 2904 109.38      
17 B1 1233 1114 3.82      
18 B1 975 881 10.44      
19 B1 863 780 2.15      
20 B1 602 544 70.07      
21 B1 406 367 11.12      
22 B2 3366 3040 32.01      
23 B2 3167 2861 62.31      
24 B2 1610 1454 0.01      
25 B2 1505 1360 3.39      
26 B2 1423 1285 0.87      
27 B2 1410 1274 0.65      
28 B2 1131 1022 0.74      
29 B2 953 861 6.98      
30 B2 760 687 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 23735.9 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 21443.0 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 HF/CEP-121G*
ABC
0.25978 0.25188 0.13413

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.279
C2 0.000 1.153 0.508
C3 0.000 -1.153 0.508
C4 0.000 0.775 -0.971
C5 0.000 -0.775 -0.971
H6 0.000 0.000 2.358
H7 0.000 2.208 0.718
H8 0.000 -2.208 0.718
H9 0.872 1.183 -1.479
H10 -0.872 1.183 -1.479
H11 0.872 -1.183 -1.479
H12 -0.872 -1.183 -1.479

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.38721.38722.37992.37991.07862.27862.27863.12573.12573.12573.1257
C21.38722.30671.52692.43062.17951.07573.36832.17092.17093.18943.1894
C31.38722.30672.43061.52692.17953.36831.07573.18943.18942.17092.1709
C42.37991.52692.43061.55043.41772.21523.42861.08911.08912.20352.2035
C52.37992.43061.52691.55043.41773.42862.21522.20352.20351.08911.0891
H61.07862.17952.17953.41773.41772.75052.75054.10904.10904.10904.1090
H72.27861.07573.36832.21523.42862.75054.41682.57692.57694.13454.1345
H82.27863.36831.07573.42862.21522.75054.41684.13454.13452.57692.5769
H93.12572.17093.18941.08912.20354.10902.57694.13451.74492.36672.9404
H103.12572.17093.18941.08912.20354.10902.57694.13451.74492.94042.3667
H113.12573.18942.17092.20351.08914.10904.13452.57692.36672.94041.7449
H123.12573.18942.17092.20351.08914.10904.13452.57692.94042.36671.7449

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 109.414 C1 C2 H7 135.004
C1 C3 C5 109.414 C1 C3 H8 135.004
C2 C1 C3 112.495 C2 C1 H6 123.753
C2 C4 C5 104.339 C2 C4 H9 111.064
C2 C4 H10 111.064 C3 C1 H6 123.753
C3 C5 C4 104.339 C3 C5 H11 111.064
C3 C5 H12 111.064 C4 C2 H7 115.581
C4 C5 H11 112.008 C4 C5 H12 112.008
C5 C3 H8 115.581 C5 C4 H9 112.008
C5 C4 H10 112.008 H9 C4 H10 106.465
H11 C5 H12 106.465
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.193      
2 C -0.229      
3 C -0.229      
4 C -0.331      
5 C -0.331      
6 H 0.225      
7 H 0.228      
8 H 0.228      
9 H 0.158      
10 H 0.158      
11 H 0.158      
12 H 0.158      


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 -0.268 0.268
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.014 0.000 0.000
y 0.000 -29.061 0.000
z 0.000 0.000 -30.471
Traceless
 xyz
x -3.249 0.000 0.000
y 0.000 2.682 0.000
z 0.000 0.000 0.567
Polar
3z2-r21.134
x2-y2-3.954
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.266 0.000 0.000
y 0.000 8.610 0.000
z 0.000 0.000 7.896


<r2> (average value of r2) Å2
<r2> 84.615
(<r2>)1/2 9.199