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/6-311G*

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/6-311G*
 hartrees
Energy at 0K-234.360611
Energy at 298.15K-234.371354
Nuclear repulsion energy232.511482
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/6-311G*
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 3101 3069 25.30      
2 A 3042 3011 27.28      
3 A 3032 3001 48.22      
4 A 2993 2962 71.01      
5 A 2992 2961 23.48      
6 A 2979 2948 42.84      
7 A 2970 2940 9.25      
8 A 2948 2917 47.32      
9 A 2927 2897 61.45      
10 A 2926 2895 42.11      
11 A 1672 1655 2.61      
12 A 1470 1455 2.43      
13 A 1458 1443 9.77      
14 A 1451 1436 2.08      
15 A 1447 1432 6.64      
16 A 1445 1430 4.69      
17 A 1376 1362 3.17      
18 A 1322 1308 1.81      
19 A 1292 1278 1.06      
20 A 1285 1271 2.31      
21 A 1245 1232 1.90      
22 A 1218 1205 1.49      
23 A 1202 1189 1.27      
24 A 1145 1133 0.79      
25 A 1128 1116 1.29      
26 A 1056 1045 0.35      
27 A 1022 1012 2.20      
28 A 1000 990 7.03      
29 A 990 980 5.51      
30 A 923 914 2.06      
31 A 901 892 0.90      
32 A 881 872 0.30      
33 A 858 849 0.39      
34 A 807 799 2.23      
35 A 775 767 13.80      
36 A 636 630 1.86      
37 A 566 560 0.11      
38 A 429 424 4.18      
39 A 310 307 0.61      
40 A 235 233 2.65      
41 A 175 173 0.72      
42 A 137 135 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 30883.4 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 30562.2 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/6-311G*
ABC
0.23104 0.10060 0.07456

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.760 0.074 -0.003
H2 -0.334 2.192 -0.073
C3 0.032 1.161 -0.025
H4 -2.666 -0.451 0.863
H5 -2.620 -0.559 -0.899
H6 -2.693 1.040 -0.113
C7 -2.255 0.033 -0.041
H8 -0.027 -1.598 1.158
H9 -0.263 -1.994 -0.547
C10 0.070 -1.190 0.133
H11 1.743 -0.899 -1.228
H12 2.273 -1.243 0.427
C13 1.512 -0.714 -0.166
H14 1.878 1.065 1.101
H15 2.133 1.369 -0.620
C16 1.497 0.815 0.091

Atom - Atom Distances (Å)
  C1 H2 C3 H4 H5 H6 C7 H8 H9 C10 H11 H12 C13 H14 H15 C16
C12.16111.34492.15842.15922.16391.49632.16382.19541.51812.95173.33472.41073.02673.22962.3771
H22.16111.09473.64653.67022.62532.88953.99664.21303.41153.89924.34123.44412.74622.65822.2967
C31.34491.09473.26583.27902.72902.54993.00293.21142.35612.93613.31792.39342.16482.19431.5098
H42.15843.64653.26581.76581.78251.10472.89293.18492.92704.90015.02144.31154.79665.34314.4190
H52.15923.67023.27901.76581.78291.10453.46922.78212.94954.38815.11554.19955.18355.13704.4511
H62.16392.62532.72901.78251.78291.10013.96063.91163.55934.96805.49274.55704.73004.86434.2009
C71.49632.88952.54991.10471.10451.10013.01092.88732.63334.27364.72823.84324.41074.62403.8348
H82.16383.99663.00292.89293.46923.96063.01091.76581.10823.05202.43952.21503.27524.07853.0470
H92.19544.21303.21143.18492.78213.91162.88731.76581.10432.38422.81842.22134.08114.13023.3753
C101.51813.41152.35612.92702.94953.55932.63331.10821.10432.17542.22311.54763.04783.37192.4605
H112.95173.89922.93614.90014.38814.96804.27363.05202.38422.17541.77191.10213.04982.38122.1772
H123.33474.34123.31795.02145.11555.49274.72822.43952.81842.22311.77191.10052.43662.81762.2251
C132.41073.44412.39344.31154.19954.55703.84322.21502.22131.54761.10211.10052.21472.22051.5506
H143.02672.74622.16484.79665.18354.73004.41073.27524.08113.04783.04982.43662.21471.76551.1079
H153.22962.65822.19435.34315.13704.86434.62404.07854.13023.37192.38122.81762.22051.76551.1035
C162.37712.29671.50984.41904.45114.20093.83483.04703.37532.46052.17722.22511.55061.10791.1035

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 124.390 C1 C3 C16 112.623
C1 C7 H4 111.269 C1 C7 H5 111.354
C1 C7 H6 112.000 C1 C10 H8 109.972
C1 C10 H9 112.735 C1 C10 C13 103.691
H2 C3 C16 122.925 C3 C1 C7 127.572
C3 C1 C10 110.621 C3 C16 C13 102.890
C3 C16 H14 110.641 C3 C16 H15 113.288
H4 C7 H5 106.126 H4 C7 H6 107.887
H5 C7 H6 107.941 C7 C1 C10 121.758
H8 C10 H9 105.896 H8 C10 C13 111.966
H9 C10 C13 112.708 C10 C13 H11 109.220
C10 C13 H12 113.090 C10 C13 C16 105.155
H11 C13 H12 107.118 H11 C13 C16 109.153
H12 C13 C16 113.040 C13 C16 H14 111.749
C13 C16 H15 112.484 H14 C16 H15 105.941
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.110      
2 H 0.171      
3 C -0.181      
4 H 0.222      
5 H 0.223      
6 H 0.222      
7 C -0.708      
8 H 0.213      
9 H 0.213      
10 C -0.467      
11 H 0.220      
12 H 0.212      
13 C -0.436      
14 H 0.214      
15 H 0.214      
16 C -0.442      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.146 -0.178 0.061 0.238
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.745 0.152 0.085
y 0.152 -37.961 -0.064
z 0.085 -0.064 -39.305
Traceless
 xyz
x 0.888 0.152 0.085
y 0.152 0.564 -0.064
z 0.085 -0.064 -1.452
Polar
3z2-r2-2.904
x2-y20.216
xy0.152
xz0.085
yz-0.064


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.766 0.877 0.085
y 0.877 10.602 -0.106
z 0.085 -0.106 7.528


<r2> (average value of r2) Å2
<r2> 171.608
(<r2>)1/2 13.100