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, 3-methyl-)

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-234.520630
Energy at 298.15K-234.531709
Nuclear repulsion energy235.512004
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 B1B95/6-31G**
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 3230 3084 25.86      
2 A 3203 3059 7.36      
3 A 3139 2997 43.72      
4 A 3138 2996 24.63      
5 A 3131 2989 25.87      
6 A 3095 2955 35.26      
7 A 3066 2928 26.36      
8 A 3055 2917 27.61      
9 A 3037 2900 42.85      
10 A 3007 2871 30.51      
11 A 1716 1638 1.08      
12 A 1508 1439 3.81      
13 A 1505 1437 3.94      
14 A 1504 1436 1.92      
15 A 1485 1418 1.17      
16 A 1414 1350 2.10      
17 A 1400 1337 4.40      
18 A 1345 1285 0.96      
19 A 1333 1273 0.65      
20 A 1316 1256 3.58      
21 A 1295 1237 0.94      
22 A 1233 1178 0.68      
23 A 1207 1152 0.30      
24 A 1150 1098 0.46      
25 A 1122 1071 4.43      
26 A 1109 1059 3.41      
27 A 1077 1028 2.87      
28 A 1013 967 1.98      
29 A 977 933 0.13      
30 A 969 925 2.40      
31 A 958 915 0.58      
32 A 926 884 2.53      
33 A 866 827 2.07      
34 A 831 794 1.18      
35 A 755 721 5.06      
36 A 742 709 24.10      
37 A 577 551 3.82      
38 A 493 471 2.36      
39 A 337 322 0.04      
40 A 284 271 0.14      
41 A 239 228 0.03      
42 A 123 117 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 31954.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 30510.5 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 B1B95/6-31G**
ABC
0.22598 0.10639 0.07941

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.291 2.210 0.089
C2 0.103 1.199 0.084
H3 2.166 1.572 -0.383
C4 1.370 0.870 -0.160
H5 2.117 -0.832 0.917
H6 2.214 -1.030 -0.824
C7 1.595 -0.611 -0.024
H8 0.043 -2.060 0.590
H9 -0.111 -1.440 -1.053
C10 0.162 -1.167 -0.028
H11 -0.884 -0.037 1.511
C12 -0.744 -0.002 0.419
H13 -2.728 0.837 0.098
H14 -2.669 -0.926 0.016
H15 -2.033 0.042 -1.321
C16 -2.122 -0.012 -0.232

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 C7 H8 H9 C10 H11 C12 H13 H14 H15 C16
H11.08552.58232.14903.96714.19603.39554.31243.82933.40962.72472.28272.79733.93653.11832.8974
C21.08552.14821.33172.97883.20112.34813.29832.88152.36922.12991.50762.85373.49322.80612.5528
H32.58232.14821.08492.73322.63942.28454.31823.83513.41243.93423.40494.97225.45704.56664.5740
C42.14901.33171.08492.14792.18201.50373.30252.88562.37162.94842.35934.10594.42373.68963.6024
H53.96712.97882.73322.14791.75451.09832.43303.03572.19713.16033.02045.18904.87124.79544.4680
H64.19603.20112.63942.18201.75451.09442.78782.37192.20484.00343.36915.36214.95574.40854.4931
C73.39552.34812.28451.50371.09831.09442.21082.15841.53742.97132.45774.56054.27633.90833.7712
H84.31243.29834.31823.30252.43302.78782.21081.76201.09222.40762.20954.03812.99483.51823.0912
H93.82932.88153.83512.88563.03572.37192.15841.76201.09543.02252.15303.65462.81972.44222.5998
C103.40962.36923.41242.37162.19712.20481.53741.09221.09542.17621.54193.51872.84182.82012.5678
H112.72472.12993.93422.94843.16034.00342.97132.40763.02252.17621.10072.48172.49213.05672.1378
C122.28271.50763.40492.35933.02043.36912.45772.20952.15301.54191.10072.17732.17262.16581.5240
H132.79732.85374.97224.10595.18905.36214.56054.03813.65463.51872.48172.17731.76521.76831.0934
H143.93653.49325.45704.42374.87124.95574.27632.99482.81972.84182.49212.17261.76521.76861.0935
H153.11832.80614.56663.68964.79544.40853.90833.51822.44222.82013.05672.16581.76831.76861.0938
C162.89742.55284.57403.60244.46804.49313.77123.09122.59982.56782.13781.52401.09341.09351.0938

picture of Cyclopentene, 3-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 125.195 H1 C2 C12 122.515
C2 C4 H3 125.176 C2 C4 C7 111.672
C2 C12 C10 101.945 C2 C12 H11 108.475
C2 C12 C16 114.713 H3 C4 C7 123.088
C4 C2 C12 112.243 C4 C7 H5 110.298
C4 C7 H6 113.307 C4 C7 C10 102.488
H5 C7 H6 106.285 H5 C7 C10 111.858
H6 C7 C10 112.726 C7 C10 H8 113.349
C7 C10 H9 108.981 C7 C10 C12 105.902
H8 C10 H9 107.314 H8 C10 C12 112.909
H9 C10 C12 108.250 C10 C12 H11 109.746
C10 C12 C16 113.762 H11 C12 C16 107.989
C12 C16 H13 111.524 C12 C16 H14 111.140
C12 C16 H15 110.572 H13 C16 H14 107.646
H13 C16 H15 107.887 H14 C16 H15 107.918
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.099      
2 C -0.068      
3 H 0.101      
4 C -0.104      
5 H 0.125      
6 H 0.119      
7 C -0.257      
8 H 0.112      
9 H 0.121      
10 C -0.234      
11 H 0.121      
12 C -0.139      
13 H 0.116      
14 H 0.118      
15 H 0.120      
16 C -0.355      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.006 -0.134 0.116 0.177
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.963 -0.233 -0.554
y -0.233 -37.057 -0.147
z -0.554 -0.147 -38.465
Traceless
 xyz
x 0.799 -0.233 -0.554
y -0.233 0.656 -0.147
z -0.554 -0.147 -1.455
Polar
3z2-r2-2.910
x2-y20.095
xy-0.233
xz-0.554
yz-0.147


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.924 -0.356 -0.479
y -0.356 8.892 -0.110
z -0.479 -0.110 6.909


<r2> (average value of r2) Å2
<r2> 163.476
(<r2>)1/2 12.786