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/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 HF/6-311G**
 hartrees
Energy at 0K-233.068338
Energy at 298.15K-233.079859
Nuclear repulsion energy235.747657
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/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 3344 3038 33.79      
2 A 3317 3013 12.26      
3 A 3214 2920 110.40      
4 A 3210 2917 48.60      
5 A 3192 2900 31.77      
6 A 3185 2894 50.77      
7 A 3155 2866 12.83      
8 A 3152 2864 57.18      
9 A 3138 2851 53.71      
10 A 3137 2850 22.54      
11 A 1825 1658 2.97      
12 A 1622 1473 3.05      
13 A 1615 1467 1.55      
14 A 1614 1466 3.86      
15 A 1610 1463 1.77      
16 A 1538 1397 3.55      
17 A 1505 1367 2.42      
18 A 1493 1356 1.01      
19 A 1458 1325 3.87      
20 A 1424 1294 0.11      
21 A 1413 1283 3.74      
22 A 1343 1220 0.53      
23 A 1269 1153 0.71      
24 A 1246 1132 1.83      
25 A 1220 1108 0.34      
26 A 1196 1087 5.02      
27 A 1142 1038 2.81      
28 A 1090 991 0.46      
29 A 1059 962 6.08      
30 A 1032 938 1.69      
31 A 1007 915 6.22      
32 A 985 895 2.66      
33 A 973 884 2.86      
34 A 875 795 1.37      
35 A 832 756 0.74      
36 A 776 705 42.01      
37 A 611 555 2.95      
38 A 455 414 0.79      
39 A 429 389 0.01      
40 A 335 304 0.04      
41 A 268 243 0.01      
42 A 120 109 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 33711.8 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 30627.2 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 HF/6-311G**
ABC
0.22794 0.10634 0.07870

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.431 -1.276 -0.128
C2 -1.552 -0.659 -0.062
H3 -2.431 1.276 -0.128
C4 -1.552 0.659 -0.062
H5 0.135 -1.612 -0.989
H6 -0.049 -2.043 0.694
C7 -0.153 -1.223 -0.011
H8 -0.048 2.044 0.693
H9 0.135 1.610 -0.989
C10 -0.152 1.223 -0.011
H11 0.772 0.000 1.475
C12 0.704 0.000 0.389
H13 2.672 -0.877 0.140
H14 2.672 0.878 0.140
H15 2.099 -0.000 -1.270
C16 2.118 -0.000 -0.183

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 C7 H8 H9 C10 H11 C12 H13 H14 H15 C16
H11.07592.55162.12642.72712.63412.28234.16843.95663.38413.80223.42445.12585.54524.84254.7248
C21.07592.12631.31832.14782.17851.50993.18422.97592.34622.86292.39354.23464.49923.90153.7305
H32.55162.12631.07593.95814.16723.38402.63502.72742.28283.80203.42445.54555.12564.84304.7250
C42.12641.31831.07592.97733.18322.34632.17932.14721.51012.86282.39364.49954.23433.90173.7306
H52.72712.14783.95812.97731.74691.09034.02873.22263.01273.01222.19592.87273.72952.55622.6797
H62.63412.17854.16723.18321.74691.08684.08744.02703.34322.33642.19913.01204.03033.55613.1049
C72.28231.50993.38402.34631.09031.08683.34403.01122.44622.13521.54612.84963.52312.85422.5844
H84.16843.18422.63502.17934.02874.08743.34401.74691.08672.33702.19944.03003.01083.55563.1044
H93.95662.97592.72742.14723.22264.02703.01121.74691.09043.01162.19493.72872.87212.55552.6789
C103.38412.34622.28281.51013.01273.34322.44621.08671.09042.13471.54583.52292.84902.85442.5842
H113.80222.86293.80202.86283.01222.33642.13522.33703.01162.13471.08762.48212.48223.04852.1351
C123.42442.39353.42442.39362.19592.19911.54612.19942.19491.54581.08762.16882.16872.16731.5248
H135.12584.23465.54554.49952.87273.01202.84964.03003.72873.52292.48212.16881.75511.75701.0869
H145.54524.49925.12564.23433.72954.03033.52313.01082.87212.84902.48222.16871.75511.75701.0869
H154.84253.90154.84303.90172.55623.55612.85423.55562.55552.85443.04852.16731.75701.75701.0873
C164.72483.73054.72503.73062.67973.10492.58443.10442.67892.58422.13511.52481.08691.08691.0873

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 124.974 H1 C2 C7 123.048
C2 C4 H3 124.970 C2 C4 C10 111.923
C2 C7 H5 110.337 C2 C7 H6 113.048
C2 C7 C12 103.106 H3 C4 C10 123.067
C4 C2 C7 111.938 C4 C10 H8 113.108
C4 C10 H9 110.274 C4 C10 C12 103.112
H5 C7 H6 106.717 H5 C7 C12 111.626
H6 C7 C12 112.102 C7 C12 C10 104.587
C7 C12 H11 107.042 C7 C12 C16 114.610
H8 C10 H9 106.722 H8 C10 C12 112.149
H9 C10 C12 111.568 C10 C12 H11 107.028
C10 C12 C16 114.610 H11 C12 C16 108.468
C12 C16 H13 111.172 C12 C16 H14 111.165
C12 C16 H15 111.024 H13 C16 H14 107.675
H13 C16 H15 107.821 H14 C16 H15 107.823
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.093      
2 C -0.140      
3 H 0.093      
4 C -0.140      
5 H 0.099      
6 H 0.103      
7 C -0.118      
8 H 0.103      
9 H 0.099      
10 C -0.118      
11 H 0.104      
12 C -0.239      
13 H 0.089      
14 H 0.089      
15 H 0.084      
16 C -0.199      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.147 -0.000 0.016 0.148
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.743 0.000 0.426
y 0.000 -37.500 0.003
z 0.426 0.003 -39.767
Traceless
 xyz
x -0.110 0.000 0.426
y 0.000 1.755 0.003
z 0.426 0.003 -1.645
Polar
3z2-r2-3.291
x2-y2-1.243
xy0.000
xz0.426
yz0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.648 0.000 0.047
y 0.000 10.418 0.000
z 0.047 0.000 7.116


<r2> (average value of r2) Å2
<r2> 163.808
(<r2>)1/2 12.799