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: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-233.372625
Energy at 298.15K-233.383494
Nuclear repulsion energy231.786017
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 B3LYP/3-21G
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 3204 3092 14.73      
2 A 3131 3021 34.58      
3 A 3116 3007 19.10      
4 A 3089 2981 46.85      
5 A 3076 2968 21.29      
6 A 3071 2963 27.29      
7 A 3069 2961 2.44      
8 A 3033 2927 42.85      
9 A 3033 2927 47.35      
10 A 3029 2923 11.81      
11 A 1724 1664 1.64      
12 A 1560 1505 0.84      
13 A 1554 1499 9.01      
14 A 1550 1496 9.60      
15 A 1543 1489 0.37      
16 A 1538 1484 1.56      
17 A 1462 1410 2.85      
18 A 1375 1327 2.87      
19 A 1343 1296 4.35      
20 A 1342 1295 1.97      
21 A 1320 1274 0.44      
22 A 1272 1227 1.58      
23 A 1258 1213 1.23      
24 A 1206 1164 1.57      
25 A 1174 1133 1.72      
26 A 1117 1078 0.47      
27 A 1057 1020 5.47      
28 A 1056 1019 7.26      
29 A 1021 985 1.17      
30 A 933 901 1.53      
31 A 915 883 0.40      
32 A 899 867 1.64      
33 A 867 837 0.16      
34 A 844 814 9.14      
35 A 809 781 7.48      
36 A 672 649 3.05      
37 A 581 561 0.12      
38 A 430 415 4.51      
39 A 318 307 0.62      
40 A 236 227 2.81      
41 A 177 170 0.79      
42 A 111 107 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 32056.7 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 30931.5 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 B3LYP/3-21G
ABC
0.22883 0.09990 0.07382

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.761 0.078 -0.001
H2 -0.344 2.185 -0.065
C3 0.019 1.164 -0.020
H4 -2.658 -0.454 0.869
H5 -2.614 -0.560 -0.895
H6 -2.695 1.033 -0.107
C7 -2.265 0.029 -0.036
H8 -0.045 -1.630 1.123
H9 -0.251 -1.965 -0.606
C10 0.067 -1.203 0.116
H11 1.799 -0.927 -1.186
H12 2.256 -1.218 0.505
C13 1.532 -0.720 -0.145
H14 1.891 1.098 1.072
H15 2.104 1.362 -0.667
C16 1.501 0.832 0.080

Atom - Atom Distances (Å)
  C1 H2 C3 H4 H5 H6 C7 H8 H9 C10 H11 H12 C13 H14 H15 C16
C12.14891.33732.15362.15382.15901.50462.16722.19081.53002.99483.32242.43243.03773.20912.3860
H22.14891.08423.63223.65762.61862.88804.00734.18603.41773.94094.31983.45892.73282.65132.2924
C31.33731.08423.25173.26642.71812.55013.02013.19482.37172.98343.30972.41992.16872.19191.5225
H42.15363.63223.25171.76821.77871.09882.87723.20202.92454.93084.98624.31904.81085.32244.4242
H52.15383.65763.26641.76821.77921.09853.43852.76482.93684.43805.10994.21645.18805.09914.4521
H62.15902.61862.71811.77871.77921.09463.95333.90003.56045.02015.47264.57604.73534.84234.2048
C71.50462.88802.55011.09881.09851.09463.00442.89062.64154.33024.72053.87134.43204.61053.8522
H82.16724.00733.02012.87723.43853.95333.00441.77301.09943.03752.41762.21853.34574.09533.0887
H92.19084.18603.19483.20202.76483.90002.89061.77301.09662.37002.84172.22254.09694.07593.3705
C101.53003.41772.37172.92452.93683.56042.64151.09941.09662.18472.22331.56463.08823.36752.4898
H112.99483.94092.98344.93084.43805.02014.33023.03752.37002.18471.77551.09443.03432.36612.1869
H123.32244.31983.30974.98625.10995.47264.72052.41762.84172.22331.77551.09282.41202.83712.2251
C132.43243.45892.41994.31904.21644.57603.87132.21852.22251.56461.09441.09282.21732.22101.5684
H143.03772.73282.16874.81085.18804.73534.43203.34574.09693.08823.03432.41202.21731.77161.0991
H153.20912.65132.19195.32245.09914.84234.61054.09534.07593.36752.36612.83712.22101.77161.0960
C162.38602.29241.52254.42424.45214.20483.85223.08873.37052.48982.18692.22511.56841.09911.0960

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 124.779 C1 C3 C16 112.932
C1 C7 H4 110.658 C1 C7 H5 110.698
C1 C7 H6 111.354 C1 C10 H8 109.932
C1 C10 H9 111.985 C1 C10 C13 103.622
H2 C3 C16 122.254 C3 C1 C7 127.516
C3 C1 C10 111.436 C3 C16 C13 103.050
C3 C16 H14 110.597 C3 C16 H15 112.652
H4 C7 H5 107.171 H4 C7 H6 108.376
H5 C7 H6 108.446 C7 C1 C10 121.014
H8 C10 H9 107.679 H8 C10 C13 111.578
H9 C10 C13 112.067 C10 C13 H11 109.223
C10 C13 H12 112.365 C10 C13 C16 105.255
H11 C13 H12 108.543 H11 C13 C16 109.134
H12 C13 C16 112.233 C13 C16 H14 111.232
C13 C16 H15 111.716 H14 C16 H15 107.625
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.063     0.166
2 H 0.166     0.158
3 C -0.171     -0.342
4 H 0.199     0.162
5 H 0.199     0.168
6 H 0.197     0.174
7 C -0.612     -0.593
8 H 0.195     0.041
9 H 0.189     0.031
10 C -0.411     0.002
11 H 0.198     0.083
12 H 0.186     0.071
13 C -0.375     -0.238
14 H 0.196     0.038
15 H 0.191     0.033
16 C -0.411     0.046


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.158 -0.187 0.055 0.250
CHELPG        
AIM        
ESP -0.162 -0.200 0.060 0.264


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.891 0.170 0.077
y 0.170 -37.251 -0.081
z 0.077 -0.081 -39.131
Traceless
 xyz
x 1.299 0.170 0.077
y 0.170 0.760 -0.081
z 0.077 -0.081 -2.059
Polar
3z2-r2-4.119
x2-y20.360
xy0.170
xz0.077
yz-0.081


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.923 0.904 0.078
y 0.904 9.167 -0.096
z 0.078 -0.096 6.286


<r2> (average value of r2) Å2
<r2> 172.248
(<r2>)1/2 13.124