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-234.374322
Energy at 298.15K-234.385072
Nuclear repulsion energy232.529594
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 3106 3078 20.07      
2 A 3045 3018 23.35      
3 A 3034 3006 41.09      
4 A 2994 2967 22.29      
5 A 2993 2966 60.84      
6 A 2981 2954 37.98      
7 A 2973 2946 7.79      
8 A 2948 2921 42.72      
9 A 2928 2901 55.51      
10 A 2926 2900 38.60      
11 A 1668 1653 3.00      
12 A 1454 1441 2.33      
13 A 1440 1427 9.33      
14 A 1434 1421 1.16      
15 A 1430 1417 0.44      
16 A 1428 1415 10.28      
17 A 1360 1348 3.04      
18 A 1314 1302 1.79      
19 A 1280 1269 1.39      
20 A 1275 1263 2.05      
21 A 1236 1224 1.81      
22 A 1210 1199 1.48      
23 A 1190 1179 1.38      
24 A 1138 1127 0.59      
25 A 1116 1106 1.46      
26 A 1047 1038 0.42      
27 A 1018 1009 2.54      
28 A 994 985 7.30      
29 A 982 974 5.90      
30 A 920 911 1.86      
31 A 897 889 0.91      
32 A 875 867 0.21      
33 A 855 847 0.42      
34 A 805 798 3.25      
35 A 777 770 11.55      
36 A 634 628 1.73      
37 A 565 560 0.11      
38 A 429 426 4.23      
39 A 311 308 0.64      
40 A 236 233 2.53      
41 A 175 174 0.77      
42 A 137 136 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 30778.4 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 30498.3 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 PBEPBE/6-311G**
ABC
0.23096 0.10064 0.07458

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 -0.336 2.190 -0.074
C3 0.031 1.161 -0.025
H4 -2.663 -0.451 0.864
H5 -2.616 -0.560 -0.900
H6 -2.690 1.041 -0.115
C7 -2.255 0.033 -0.041
H8 -0.027 -1.595 1.160
H9 -0.264 -1.993 -0.546
C10 0.071 -1.190 0.133
H11 1.739 -0.897 -1.230
H12 2.274 -1.243 0.425
C13 1.513 -0.714 -0.167
H14 1.875 1.064 1.102
H15 2.133 1.369 -0.619
C16 1.496 0.815 0.092

Atom - Atom Distances (Å)
  C1 H2 C3 H4 H5 H6 C7 H8 H9 C10 H11 H12 C13 H14 H15 C16
C12.15981.34502.15632.15732.16171.49682.16202.19391.51812.94823.33422.41053.02403.22892.3768
H22.15981.09353.64313.66722.61992.88773.99354.21063.41093.89514.34093.44382.74632.65812.2967
C31.34501.09353.26353.27692.72502.54983.00123.21082.35712.93333.31832.39412.16382.19391.5101
H42.15633.64313.26351.76741.78421.10452.88963.18202.92484.89535.01944.30944.79085.34014.4163
H52.15733.66723.27691.76741.78471.10423.46692.77742.94684.38105.11224.19625.17895.13424.4487
H62.16172.61992.72501.78421.78471.09973.95803.90863.55774.96115.49014.55424.72474.86014.1973
C71.49682.88772.54981.10451.10421.09973.01042.88592.63384.27014.72853.84344.40844.62363.8348
H82.16203.99353.00122.88963.46693.95803.01041.76751.10783.05232.44052.21533.26984.07633.0450
H92.19394.21063.21083.18202.77743.90862.88591.76751.10372.38342.81862.22144.07884.12993.3752
C101.51813.41092.35712.92482.94683.55772.63381.10781.10372.17452.22301.54803.04563.37192.4610
H112.94823.89512.93334.89534.38104.96114.27013.05232.38342.17451.77321.10163.04972.38002.1764
H123.33424.34093.31835.01945.11225.49014.72852.44052.81862.22301.77321.10002.43642.81632.2249
C132.41053.44382.39414.30944.19624.55423.84342.21532.22141.54801.10161.10002.21442.22011.5512
H143.02402.74632.16384.79085.17894.72474.40843.26984.07883.04563.04972.43642.21441.76661.1075
H153.22892.65812.19395.34015.13424.86014.62364.07634.12993.37192.38002.81632.22011.76661.1030
C162.37682.29671.51014.41634.44874.19733.83483.04503.37522.46102.17642.22491.55121.10751.1030

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 124.359 C1 C3 C16 112.576
C1 C7 H4 111.086 C1 C7 H5 111.183
C1 C7 H6 111.812 C1 C10 H8 109.850
C1 C10 H9 112.645 C1 C10 C13 103.651
H2 C3 C16 123.003 C3 C1 C7 127.518
C3 C1 C10 110.679 C3 C16 C13 102.888
C3 C16 H14 110.564 C3 C16 H15 113.272
H4 C7 H5 106.302 H4 C7 H6 108.088
H5 C7 H6 108.144 C7 C1 C10 121.755
H8 C10 H9 106.110 H8 C10 C13 111.980
H9 C10 C13 112.718 C10 C13 H11 109.146
C10 C13 H12 113.089 C10 C13 C16 105.135
H11 C13 H12 107.300 H11 C13 C16 109.077
H12 C13 C16 113.017 C13 C16 H14 111.710
C13 C16 H15 112.442 H14 C16 H15 106.103
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 -0.115      
2 H 0.079      
3 C -0.087      
4 H 0.126      
5 H 0.128      
6 H 0.120      
7 C -0.299      
8 H 0.130      
9 H 0.125      
10 C -0.220      
11 H 0.136      
12 H 0.123      
13 C -0.266      
14 H 0.129      
15 H 0.126      
16 C -0.234      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.163 -0.193 0.062 0.259
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.602 0.175 0.081
y 0.175 -37.920 -0.061
z 0.081 -0.061 -39.270
Traceless
 xyz
x 0.993 0.175 0.081
y 0.175 0.516 -0.061
z 0.081 -0.061 -1.508
Polar
3z2-r2-3.017
x2-y20.318
xy0.175
xz0.081
yz-0.061


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.896 0.861 0.084
y 0.861 10.703 -0.105
z 0.084 -0.105 7.633


<r2> (average value of r2) Å2
<r2> 171.494
(<r2>)1/2 13.096