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All results from a given calculation for C5H8 (Cyclopentene)

using model chemistry: B3LYP/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-311G*
 hartrees
Energy at 0K-195.368857
Energy at 298.15K-195.377787
Nuclear repulsion energy171.066479
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 B3LYP/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3190 3082 32.41      
2 A' 3093 2989 55.64      
3 A' 3058 2955 67.68      
4 A' 3037 2935 5.66      
5 A' 2999 2898 39.18      
6 A' 1684 1628 1.69      
7 A' 1525 1473 2.37      
8 A' 1499 1449 1.56      
9 A' 1335 1290 0.93      
10 A' 1242 1200 1.50      
11 A' 1133 1094 0.11      
12 A' 1075 1039 6.70      
13 A' 975 942 1.13      
14 A' 906 875 0.59      
15 A' 824 796 0.68      
16 A' 711 687 35.41      
17 A' 618 597 13.96      
18 A' 140 136 0.20      
19 A" 3164 3058 12.55      
20 A" 3046 2943 43.19      
21 A" 3001 2900 61.94      
22 A" 1505 1454 2.01      
23 A" 1386 1339 1.99      
24 A" 1329 1284 0.18      
25 A" 1317 1272 2.54      
26 A" 1234 1193 0.01      
27 A" 1165 1126 1.47      
28 A" 1040 1005 1.69      
29 A" 964 932 0.09      
30 A" 920 889 6.21      
31 A" 896 866 4.45      
32 A" 785 759 0.32      
33 A" 392 379 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 25592.7 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 24730.3 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 B3LYP/6-311G*
ABC
0.24328 0.24102 0.13112

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.257 -1.207 0.000
C2 -0.066 -0.326 1.235
C3 -0.066 -0.326 -1.235
C4 -0.066 1.074 0.666
C5 -0.066 1.074 -0.666
H6 1.322 -1.455 0.000
H7 -0.292 -2.152 0.000
H8 -1.049 -0.567 1.664
H9 -1.049 -0.567 -1.664
H10 -0.103 1.962 1.289
H11 -0.103 1.962 -1.289
H12 0.660 -0.459 -2.044
H13 0.660 -0.459 2.044

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55131.55132.39862.39861.09361.09222.20992.20993.44063.44062.21422.2142
C21.55132.47041.51172.36102.17392.21591.09873.07072.28943.40723.36151.0951
C31.55132.47042.36101.51172.17392.21593.07071.09873.40722.28941.09513.3615
C42.39861.51172.36101.33152.96053.30192.15743.01431.08552.14723.19712.1856
C52.39862.36101.51171.33152.96053.30193.01432.15742.14721.08552.18563.1971
H61.09362.17392.17392.96052.96051.75803.02943.02943.91993.91992.36852.3685
H71.09222.21592.21593.30193.30191.75802.41982.41984.31564.31562.82002.8200
H82.20991.09873.07072.15743.01433.02942.41983.32842.72614.00134.08451.7535
H92.20993.07071.09873.01432.15743.02942.41983.32844.00132.72611.75354.0845
H103.44062.28943.40721.08552.14723.91994.31562.72614.00132.57754.18952.6482
H113.44063.40722.28942.14721.08553.91994.31564.00132.72612.57752.64824.1895
H122.21423.36151.09513.19712.18562.36852.82004.08451.75354.18952.64824.0887
H132.21421.09513.36152.18563.19712.36852.82001.75354.08452.64824.18954.0887

picture of Cyclopentene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 103.081 C1 C2 H8 111.877
C1 C2 H13 112.439 C1 C3 C5 103.081
C1 C3 H9 111.877 C1 C3 H12 112.439
C2 C1 C3 105.542 C2 C1 H6 109.333
C2 C1 H7 112.756 C2 C4 C5 112.128
C2 C4 H10 122.804 C3 C1 H6 109.333
C3 C1 H7 112.756 C3 C5 C4 112.128
C3 C5 H11 122.804 C4 C2 H8 110.480
C4 C2 H13 112.977 C4 C5 H11 125.025
C5 C3 H9 110.480 C5 C3 H12 112.977
C5 C4 H10 125.025 H6 C1 H7 107.081
H8 C2 H13 106.125 H9 C3 H12 106.125
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.419     -0.098
2 C -0.422     0.182
3 C -0.422     0.182
4 C -0.175     -0.249
5 C -0.175     -0.249
6 H 0.210     0.031
7 H 0.207     0.003
8 H 0.206     -0.009
9 H 0.206     -0.009
10 H 0.185     0.132
11 H 0.185     0.132
12 H 0.208     -0.024
13 H 0.208     -0.024


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.049 -0.151 0.000 0.158
CHELPG        
AIM        
ESP -0.074 -0.174 0.000 0.189


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.875 -0.015 0.000
y -0.015 -31.472 0.000
z 0.000 0.000 -30.961
Traceless
 xyz
x -1.658 -0.015 0.000
y -0.015 0.446 0.000
z 0.000 0.000 1.212
Polar
3z2-r22.423
x2-y2-1.403
xy-0.015
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.903 -0.089 0.000
y -0.089 7.981 0.000
z 0.000 0.000 9.392


<r2> (average value of r2) Å2
<r2> 105.494
(<r2>)1/2 10.271