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, 4-methyl-)

using model chemistry: HF/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/aug-cc-pVTZ
 hartrees
Energy at 0K-233.094242
Energy at 298.15K-233.105768
Nuclear repulsion energy236.119655
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/aug-cc-pVTZ
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 3341 3041 28.27      
2 A 3313 3016 11.87      
3 A 3206 2919 103.03      
4 A 3202 2915 45.52      
5 A 3186 2900 20.35      
6 A 3179 2895 51.81      
7 A 3148 2866 48.93      
8 A 3147 2865 20.60      
9 A 3133 2853 54.96      
10 A 3132 2851 14.49      
11 A 1815 1652 6.59      
12 A 1622 1477 2.66      
13 A 1615 1470 0.91      
14 A 1614 1469 4.04      
15 A 1611 1466 2.52      
16 A 1537 1400 3.05      
17 A 1505 1371 2.99      
18 A 1496 1362 1.22      
19 A 1457 1326 3.16      
20 A 1427 1299 0.24      
21 A 1417 1290 4.30      
22 A 1344 1224 0.68      
23 A 1271 1157 0.70      
24 A 1247 1135 1.75      
25 A 1221 1112 0.44      
26 A 1198 1091 5.92      
27 A 1141 1039 2.96      
28 A 1092 994 0.44      
29 A 1060 965 5.88      
30 A 1030 938 2.04      
31 A 1009 918 6.21      
32 A 986 897 2.18      
33 A 971 884 3.39      
34 A 874 795 1.26      
35 A 833 758 0.64      
36 A 777 707 45.12      
37 A 613 558 3.17      
38 A 455 415 0.81      
39 A 429 390 0.02      
40 A 335 305 0.03      
41 A 268 244 0.00      
42 A 115 105 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 33684.9 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 30666.8 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/aug-cc-pVTZ
ABC
0.22820 0.10676 0.07898

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.426 -1.273 -0.139
C2 -1.549 -0.658 -0.066
H3 -2.426 1.273 -0.139
C4 -1.549 0.658 -0.066
H5 0.139 -1.619 -0.975
H6 -0.054 -2.036 0.705
C7 -0.152 -1.222 -0.005
H8 -0.055 2.036 0.705
H9 0.139 1.619 -0.975
C10 -0.152 1.222 -0.005
H11 0.780 -0.000 1.473
C12 0.704 -0.000 0.390
H13 2.667 -0.876 0.130
H14 2.667 0.876 0.130
H15 2.087 0.000 -1.274
C16 2.112 0.000 -0.189

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 C7 H8 H9 C10 H11 C12 H13 H14 H15 C16
H11.07372.54572.12212.71992.63052.27824.15763.95493.37843.80743.42065.11595.53454.82484.7137
C21.07372.12211.31612.14422.17421.50743.17592.97652.34302.86782.39134.22624.49073.88743.7217
H32.54572.12211.07373.95474.15783.37842.63052.71982.27823.80763.42065.53455.11594.82474.7137
C42.12211.31611.07372.97633.17602.34302.17412.14421.50732.86792.39134.49074.22623.88743.7217
H52.71992.14423.95472.97631.74221.08814.02753.23793.01653.00432.19212.85803.72012.55082.6710
H62.63052.17424.15783.17601.74221.08444.07244.02763.33642.33072.19583.01404.02713.55643.1047
C72.27821.50743.37842.34301.08811.08443.33643.01662.44472.13241.54412.84403.51722.84952.5800
H84.15763.17592.63052.17414.02754.07243.33641.74221.08442.33062.19584.02723.01413.55653.1048
H93.95492.97652.71982.14423.23794.02763.01661.74221.08813.00432.19213.72012.85792.55092.6711
C103.37842.34302.27821.50733.01653.33642.44471.08441.08812.13231.54413.51722.84412.84962.5800
H113.80742.86783.80762.86793.00432.33072.13242.33063.00432.13231.08542.47612.47613.04162.1296
C123.42062.39133.42062.39132.19212.19581.54412.19582.19211.54411.08542.16492.16492.16321.5220
H135.11594.22625.53454.49072.85803.01402.84404.02723.72013.51722.47612.16491.75161.75331.0848
H145.53454.49075.11594.22623.72014.02713.51723.01412.85792.84412.47612.16491.75161.75331.0848
H154.82483.88744.82473.88742.55083.55642.84953.55652.55092.84963.04162.16321.75331.75331.0852
C164.71373.72174.71373.72172.67103.10472.58003.10482.67112.58002.12961.52201.08481.08481.0852

picture of Cyclopentene, 4-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 124.927 H1 C2 C7 123.050
C2 C4 H3 124.928 C2 C4 C10 111.985
C2 C7 H5 110.365 C2 C7 H6 113.031
C2 C7 C12 103.188 H3 C4 C10 123.048
C4 C2 C7 111.984 C4 C10 H8 113.029
C4 C10 H9 110.367 C4 C10 C12 103.188
H5 C7 H6 106.632 H5 C7 C12 111.601
H6 C7 C12 112.124 C7 C12 C10 104.673
C7 C12 H11 107.082 C7 C12 C16 114.583
H8 C10 H9 106.633 H8 C10 C12 112.122
H9 C10 C12 111.603 C10 C12 H11 107.079
C10 C12 C16 114.584 H11 C12 C16 108.357
C12 C16 H13 111.188 C12 C16 H14 111.188
C12 C16 H15 111.030 H13 C16 H14 107.674
H13 C16 H15 107.799 H14 C16 H15 107.799
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.491      
2 C -0.748      
3 H 0.491      
4 C -0.748      
5 H 0.227      
6 H 0.281      
7 C -0.492      
8 H 0.281      
9 H 0.227      
10 C -0.492      
11 H 0.268      
12 C 0.338      
13 H 0.267      
14 H 0.267      
15 H 0.275      
16 C -0.934      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.225 0.000 0.024 0.226
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.005 -0.000 0.477
y -0.000 -37.467 -0.000
z 0.477 -0.000 -39.738
Traceless
 xyz
x -0.403 -0.000 0.477
y -0.000 1.905 -0.000
z 0.477 -0.000 -1.502
Polar
3z2-r2-3.005
x2-y2-1.539
xy-0.000
xz0.477
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.562 0.000 0.001
y 0.000 10.912 0.000
z 0.001 0.000 8.177


<r2> (average value of r2) Å2
<r2> 163.389
(<r2>)1/2 12.782