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All results from a given calculation for C6H10 (Cyclopentene, 4-methyl-)

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-233.038419
Energy at 298.15K-233.049414
Nuclear repulsion energy232.689015
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 PBEPBE/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 3156 3127 25.44      
2 A 3127 3098 5.34      
3 A 3048 3021 46.53      
4 A 3045 3017 19.81      
5 A 3022 2995 19.21      
6 A 3016 2989 24.42      
7 A 2988 2961 6.00      
8 A 2972 2945 25.88      
9 A 2949 2922 17.19      
10 A 2949 2922 31.61      
11 A 1628 1613 1.31      
12 A 1523 1509 8.75      
13 A 1515 1501 3.70      
14 A 1489 1476 1.59      
15 A 1485 1472 3.23      
16 A 1410 1398 5.74      
17 A 1348 1336 0.34      
18 A 1336 1324 5.15      
19 A 1315 1303 0.09      
20 A 1278 1266 3.75      
21 A 1271 1260 6.96      
22 A 1240 1229 0.88      
23 A 1168 1157 0.70      
24 A 1135 1125 4.13      
25 A 1125 1115 0.06      
26 A 1093 1083 0.07      
27 A 1047 1038 0.76      
28 A 976 967 7.05      
29 A 954 945 1.11      
30 A 941 933 0.01      
31 A 925 916 6.22      
32 A 899 891 4.82      
33 A 886 878 0.16      
34 A 803 796 1.92      
35 A 771 764 0.75      
36 A 686 680 45.05      
37 A 569 564 6.73      
38 A 411 408 1.85      
39 A 382 378 0.12      
40 A 317 314 0.23      
41 A 256 254 0.04      
42 A 87 87 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 31271.1 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 30986.6 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 PBEPBE/3-21G
ABC
0.21959 0.10463 0.07728

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.452 1.306 -0.155
C2 1.565 0.673 -0.072
H3 2.452 -1.306 -0.155
C4 1.565 -0.673 -0.072
H5 -0.165 1.618 -0.995
H6 0.054 2.073 0.723
C7 0.151 1.242 0.001
H8 0.054 -2.073 0.723
H9 -0.165 -1.618 -0.995
C10 0.151 -1.242 0.001
H11 -0.793 -0.000 1.521
C12 -0.717 0.000 0.417
H13 -2.695 0.895 0.105
H14 -2.695 -0.895 0.105
H15 -2.049 0.000 -1.307
C16 -2.125 -0.000 -0.203

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 C7 H8 H9 C10 H11 C12 H13 H14 H15 C16
H11.09252.61292.17082.76602.66592.30694.23564.01313.43693.87883.47475.17025.60414.82614.7598
C21.09252.17081.34672.17672.20791.52613.23403.01582.38202.92472.42904.27014.54353.87823.7534
H32.61292.17081.09254.01314.23563.43692.66592.76602.30693.87883.47475.60425.17024.82614.7598
C42.17081.34671.09253.01583.23402.38202.20792.17671.52612.92472.42904.54354.27013.87823.7534
H52.76602.17674.01313.01581.79051.11044.07693.23553.04473.05652.21712.85253.73182.50272.6618
H62.66592.20794.23563.23401.79051.10504.14624.07693.39412.37762.23273.05434.09243.58303.1469
C72.30691.52613.43692.38201.11041.10503.39413.04472.48402.17831.57122.86943.56072.84472.6008
H84.23563.23402.66592.20794.07694.14623.39411.79051.10502.37762.23274.09243.05433.58303.1469
H94.01313.01582.76602.17673.23554.07693.04471.79051.11043.05652.21713.73182.85252.50272.6618
C103.43692.38202.30691.52613.04473.39412.48401.10501.11042.17831.57123.56072.86942.84472.6008
H113.87882.92473.87882.92473.05652.37762.17832.37763.05652.17831.10662.53422.53423.09382.1787
C123.47472.42903.47472.42902.21712.23271.57122.23272.21711.57121.10662.19382.19382.17851.5388
H135.17024.27015.60424.54352.85253.05432.86944.09243.73183.56072.53422.19381.78951.79221.1052
H145.60414.54355.17024.27013.73184.09243.56073.05432.85252.86942.53422.19381.78951.79221.1052
H154.82613.87824.82613.87822.50273.58302.84473.58302.50272.84473.09382.17851.79221.79221.1057
C164.75983.75344.75983.75342.66183.14692.60083.14692.66182.60082.17871.53881.10521.10521.1057

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 125.416 H1 C2 C7 122.662
C2 C4 H3 125.415 C2 C4 C10 111.878
C2 C7 H5 110.303 C2 C7 H6 113.132
C2 C7 C12 103.293 H3 C4 C10 122.662
C4 C2 C7 111.878 C4 C10 H8 113.132
C4 C10 H9 110.304 C4 C10 C12 103.293
H5 C7 H6 107.841 H5 C7 C12 110.357
H6 C7 C12 111.901 C7 C12 C10 104.458
C7 C12 H11 107.603 C7 C12 C16 113.491
H8 C10 H9 107.841 H8 C10 C12 111.900
H9 C10 C12 110.357 C10 C12 H11 107.603
C10 C12 C16 113.490 H11 C12 C16 109.813
C12 C16 H13 111.081 C12 C16 H14 111.081
C12 C16 H15 109.845 H13 C16 H14 108.112
H13 C16 H15 108.315 H14 C16 H15 108.315
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.185      
2 C -0.172      
3 H 0.185      
4 C -0.172      
5 H 0.212      
6 H 0.206      
7 C -0.425      
8 H 0.206      
9 H 0.212      
10 C -0.425      
11 H 0.215      
12 C -0.238      
13 H 0.200      
14 H 0.200      
15 H 0.199      
16 C -0.585      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.228 0.000 -0.018 0.228
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.637 0.000 -0.383
y 0.000 -36.679 0.000
z -0.383 0.000 -39.338
Traceless
 xyz
x 0.372 0.000 -0.383
y 0.000 1.809 0.000
z -0.383 0.000 -2.180
Polar
3z2-r2-4.361
x2-y2-0.958
xy0.000
xz-0.383
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.280 0.000 -0.077
y 0.000 9.756 0.000
z -0.077 0.000 6.304


<r2> (average value of r2) Å2
<r2> 166.218
(<r2>)1/2 12.893