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-234.507189
Energy at 298.15K-234.518282
Nuclear repulsion energy235.639827
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 3243 3079 27.37      
2 A 3217 3053 8.52      
3 A 3150 2990 46.95      
4 A 3149 2989 25.01      
5 A 3142 2983 26.36      
6 A 3108 2950 37.03      
7 A 3079 2923 27.01      
8 A 3069 2914 27.12      
9 A 3050 2896 42.94      
10 A 3020 2867 31.26      
11 A 1727 1639 0.99      
12 A 1530 1453 3.77      
13 A 1527 1450 4.13      
14 A 1527 1449 2.46      
15 A 1508 1432 1.22      
16 A 1434 1361 2.43      
17 A 1414 1343 4.51      
18 A 1360 1291 0.80      
19 A 1349 1281 0.69      
20 A 1332 1264 3.75      
21 A 1310 1244 1.07      
22 A 1246 1183 0.69      
23 A 1219 1158 0.33      
24 A 1160 1101 0.52      
25 A 1133 1076 4.28      
26 A 1120 1063 3.67      
27 A 1087 1032 2.53      
28 A 1022 970 1.95      
29 A 984 934 0.35      
30 A 976 926 1.99      
31 A 966 917 0.63      
32 A 933 886 2.56      
33 A 873 828 1.94      
34 A 839 796 1.21      
35 A 760 721 4.97      
36 A 746 708 25.79      
37 A 581 551 3.99      
38 A 496 471 2.39      
39 A 339 322 0.04      
40 A 285 270 0.13      
41 A 240 228 0.04      
42 A 123 117 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 32184.6 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 30552.9 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
0.22613 0.10656 0.07954

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 -0.292 2.209 0.090
C2 0.103 1.198 0.085
H3 2.165 1.571 -0.385
C4 1.368 0.870 -0.160
H5 2.116 -0.832 0.916
H6 2.211 -1.029 -0.825
C7 1.594 -0.610 -0.024
H8 0.043 -2.059 0.591
H9 -0.112 -1.440 -1.052
C10 0.162 -1.166 -0.028
H11 -0.885 -0.039 1.511
C12 -0.744 -0.002 0.420
H13 -2.726 0.836 0.098
H14 -2.666 -0.927 0.014
H15 -2.030 0.044 -1.321
C16 -2.120 -0.012 -0.233

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 C7 H8 H9 C10 H11 C12 H13 H14 H15 C16
H11.08542.58242.14833.96644.19453.39434.31013.82803.40772.72452.28132.79483.93413.11472.8946
C21.08542.14751.33062.97793.19952.34683.29632.88072.36762.13021.50682.85213.49112.80312.5505
H32.58242.14751.08482.73312.63812.28354.31613.83333.41053.93493.40354.96955.45324.56104.5703
C42.14831.33061.08482.14802.18131.50313.30082.88432.37002.94862.35784.10314.42003.68463.5988
H53.96642.97792.73312.14801.75481.09822.43113.03452.19613.16043.01925.18694.86814.79194.4653
H64.19453.19952.63812.18131.75481.09442.78652.36992.20334.00263.36715.35844.95024.40264.4884
C73.39432.34682.28351.50311.09821.09442.20962.15771.53652.97102.45644.55804.27263.90423.7679
H84.31013.29634.31613.30082.43112.78652.20961.76221.09222.40542.20814.03612.99233.51713.0894
H93.82802.88073.83332.88433.03452.36992.15771.76221.09533.02132.15243.65232.81522.43952.5969
C103.40772.36763.41052.37002.19612.20331.53651.09221.09532.17521.54093.51652.83862.81772.5652
H112.72452.13023.93492.94863.16044.00262.97102.40543.02132.17521.10042.48072.49093.05602.1369
C122.28131.50683.40352.35783.01923.36712.45642.20812.15241.54091.10042.17652.17152.16521.5231
H132.79482.85214.96954.10315.18695.35844.55804.03613.65233.51652.48072.17651.76591.76871.0937
H143.93413.49115.45324.42004.86814.95024.27262.99232.81522.83862.49092.17151.76591.76911.0937
H153.11472.80314.56103.68464.79194.40263.90423.51712.43952.81773.05602.16521.76871.76911.0940
C162.89462.55054.57033.59884.46534.48843.76793.08942.59692.56522.13691.52311.09371.09371.0940

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 125.237 H1 C2 C12 122.469
C2 C4 H3 125.216 C2 C4 C7 111.677
C2 C12 C10 101.941 C2 C12 H11 108.580
C2 C12 C16 114.660 H3 C4 C7 123.044
C4 C2 C12 112.250 C4 C7 H5 110.358
C4 C7 H6 113.297 C4 C7 C10 102.460
H5 C7 H6 106.330 H5 C7 C10 111.847
H6 C7 C10 112.668 C7 C10 H8 113.317
C7 C10 H9 108.985 C7 C10 C12 105.914
H8 C10 H9 107.330 H8 C10 C12 112.874
H9 C10 C12 108.288 C10 C12 H11 109.760
C10 C12 C16 113.695 H11 C12 C16 108.001
C12 C16 H13 111.507 C12 C16 H14 111.105
C12 C16 H15 110.580 H13 C16 H14 107.668
H13 C16 H15 107.900 H14 C16 H15 107.931
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 0.146      
2 C -0.116      
3 H 0.148      
4 C -0.143      
5 H 0.165      
6 H 0.162      
7 C -0.345      
8 H 0.156      
9 H 0.161      
10 C -0.323      
11 H 0.160      
12 C -0.163      
13 H 0.159      
14 H 0.161      
15 H 0.162      
16 C -0.491      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.003 -0.121 0.120 0.170
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.002 -0.219 -0.588
y -0.219 -37.030 -0.155
z -0.588 -0.155 -38.456
Traceless
 xyz
x 0.741 -0.219 -0.588
y -0.219 0.699 -0.155
z -0.588 -0.155 -1.439
Polar
3z2-r2-2.878
x2-y20.028
xy-0.219
xz-0.588
yz-0.155


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.761 -0.358 -0.485
y -0.358 8.757 -0.111
z -0.485 -0.111 6.806


<r2> (average value of r2) Å2
<r2> 163.286
(<r2>)1/2 12.778