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 C6H10 (Cyclopentene, 1-methyl-)

using model chemistry: PBEPBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/6-31G**
 hartrees
Energy at 0K-234.327145
Energy at 298.15K-234.337873
Nuclear repulsion energy232.206214
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/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 A 3125 3082 19.65      
2 A 3066 3024 20.16      
3 A 3054 3012 35.85      
4 A 3014 2973 21.80      
5 A 3009 2967 55.24      
6 A 2997 2956 30.44      
7 A 2989 2948 9.57      
8 A 2961 2921 41.65      
9 A 2943 2902 53.93      
10 A 2942 2902 35.84      
11 A 1683 1660 2.25      
12 A 1467 1447 0.77      
13 A 1453 1433 5.93      
14 A 1447 1427 0.74      
15 A 1443 1423 0.49      
16 A 1441 1422 7.74      
17 A 1373 1355 1.29      
18 A 1325 1307 1.21      
19 A 1291 1273 0.56      
20 A 1285 1267 2.16      
21 A 1243 1226 1.74      
22 A 1218 1201 1.80      
23 A 1194 1178 1.16      
24 A 1145 1130 0.70      
25 A 1118 1103 1.30      
26 A 1055 1041 0.14      
27 A 1023 1009 2.49      
28 A 1000 986 6.76      
29 A 988 974 5.70      
30 A 924 912 1.09      
31 A 901 889 0.55      
32 A 879 867 0.24      
33 A 857 845 0.40      
34 A 811 800 2.50      
35 A 779 769 9.05      
36 A 635 626 2.00      
37 A 564 557 0.23      
38 A 427 422 2.97      
39 A 310 305 0.60      
40 A 236 232 1.99      
41 A 178 176 0.80      
42 A 134 132 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 30962.8 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 30538.6 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/6-31G**
ABC
0.23035 0.10035 0.07435

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.761 0.073 -0.002
H2 -0.334 2.193 -0.072
C3 0.033 1.163 -0.025
H4 -2.670 -0.447 0.866
H5 -2.623 -0.561 -0.898
H6 -2.693 1.044 -0.117
C7 -2.259 0.035 -0.041
H8 -0.029 -1.603 1.158
H9 -0.263 -1.996 -0.550
C10 0.070 -1.192 0.132
H11 1.745 -0.901 -1.228
H12 2.275 -1.244 0.430
C13 1.514 -0.715 -0.166
H14 1.882 1.068 1.101
H15 2.136 1.369 -0.622
C16 1.499 0.816 0.091

Atom - Atom Distances (Å)
  C1 H2 C3 H4 H5 H6 C7 H8 H9 C10 H11 H12 C13 H14 H15 C16
C12.16441.34892.16012.16102.16501.49832.16532.19731.51922.95453.33762.41323.03213.23452.3812
H22.16441.09503.64763.67542.62452.89224.00194.21733.41543.90264.34473.44722.74822.66162.2984
C31.34891.09503.26923.28462.73002.55413.00833.21602.36032.93873.32082.39582.16662.19641.5108
H42.16013.64763.26921.76801.78531.10582.89723.19322.93244.90695.02764.31734.80295.34904.4243
H52.16103.67543.28461.76801.78621.10563.46942.78382.95124.39315.12034.20405.19065.14334.4570
H62.16502.62452.73001.78531.78621.10123.96523.91573.56274.97065.49664.56004.73424.86654.2031
C71.49832.89222.55411.10581.10561.10123.01452.89232.63744.27894.73393.84834.41764.62973.8402
H82.16534.00193.00832.89723.46943.96523.01451.76761.10933.05482.44302.21823.28474.08573.0538
H92.19734.21733.21603.19322.78383.91572.89231.76761.10562.38572.82232.22414.08824.13413.3801
C101.51923.41542.36032.93242.95123.56272.63741.10931.10562.17712.22571.54973.05443.37652.4652
H112.95453.90262.93874.90694.39314.97064.27893.05482.38572.17711.77421.10313.05252.38212.1789
H123.33764.34473.32085.02765.12035.49664.73392.44302.82232.22571.77421.10152.43962.82112.2279
C132.41323.44722.39584.31734.20404.56003.84832.21822.22411.54971.10311.10152.21762.22301.5528
H143.03212.74822.16664.80295.19064.73424.41763.28474.08823.05443.05252.43962.21761.76751.1090
H153.23452.66162.19645.34905.14334.86654.62974.08574.13413.37652.38212.82112.22301.76751.1048
C162.38122.29841.51084.42434.45704.20313.84023.05383.38012.46522.17892.22791.55281.10901.1048

picture of Cyclopentene, 1-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H2 124.335 C1 C3 C16 112.623
C1 C7 H4 111.199 C1 C7 H5 111.286
C1 C7 H6 111.884 C1 C10 H8 109.946
C1 C10 H9 112.730 C1 C10 C13 103.685
H2 C3 C16 122.980 C3 C1 C7 127.478
C3 C1 C10 110.620 C3 C16 C13 102.884
C3 C16 H14 110.647 C3 C16 H15 113.307
H4 C7 H5 106.162 H4 C7 H6 107.981
H5 C7 H6 108.083 C7 C1 C10 121.856
H8 C10 H9 105.891 H8 C10 C13 112.010
H9 C10 C13 112.707 C10 C13 H11 109.150
C10 C13 H12 113.088 C10 C13 C16 105.237
H11 C13 H12 107.170 H11 C13 C16 109.080
H12 C13 C16 113.043 C13 C16 H14 111.761
C13 C16 H15 112.446 H14 C16 H15 105.948
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.130      
2 H 0.080      
3 C -0.111      
4 H 0.129      
5 H 0.129      
6 H 0.126      
7 C -0.424      
8 H 0.118      
9 H 0.111      
10 C -0.262      
11 H 0.124      
12 H 0.108      
13 C -0.239      
14 H 0.120      
15 H 0.114      
16 C -0.253      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.161 -0.201 0.057 0.264
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.799 0.195 0.058
y 0.195 -37.195 -0.052
z 0.058 -0.052 -38.471
Traceless
 xyz
x 1.034 0.195 0.058
y 0.195 0.440 -0.052
z 0.058 -0.052 -1.474
Polar
3z2-r2-2.948
x2-y20.397
xy0.195
xz0.058
yz-0.052


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.076 0.868 0.095
y 0.868 9.986 -0.110
z 0.095 -0.110 6.989


<r2> (average value of r2) Å2
<r2> 171.459
(<r2>)1/2 13.094