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: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-233.219394
Energy at 298.15K-233.230382
Nuclear repulsion energy231.675011
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 BLYP/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 3139 3121 31.46      
2 A 3110 3093 7.52      
3 A 3028 3012 61.79      
4 A 3021 3005 25.71      
5 A 3002 2986 25.10      
6 A 2994 2978 30.17      
7 A 2974 2958 3.61      
8 A 2964 2948 30.63      
9 A 2941 2924 19.76      
10 A 2940 2924 36.10      
11 A 1621 1612 1.78      
12 A 1535 1527 6.29      
13 A 1529 1521 2.49      
14 A 1509 1500 0.86      
15 A 1505 1497 1.30      
16 A 1425 1417 2.52      
17 A 1354 1347 0.10      
18 A 1344 1336 4.46      
19 A 1323 1316 0.03      
20 A 1285 1278 1.37      
21 A 1278 1271 6.27      
22 A 1242 1235 0.84      
23 A 1174 1167 0.47      
24 A 1132 1126 0.11      
25 A 1126 1120 3.72      
26 A 1091 1085 0.29      
27 A 1027 1021 0.75      
28 A 966 960 3.78      
29 A 942 937 0.00      
30 A 939 934 3.95      
31 A 924 919 1.66      
32 A 899 894 2.62      
33 A 876 871 2.40      
34 A 782 777 1.40      
35 A 761 757 0.55      
36 A 685 681 38.48      
37 A 573 569 5.81      
38 A 413 411 1.28      
39 A 382 380 0.07      
40 A 318 316 0.20      
41 A 254 253 0.03      
42 A 91 91 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 31207.7 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 31036.1 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 BLYP/3-21G
ABC
0.21659 0.10361 0.07653

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -2.455 -1.305 -0.186
C2 -1.571 -0.673 -0.086
H3 -2.455 1.305 -0.186
C4 -1.571 0.673 -0.086
H5 0.170 -1.661 -0.956
H6 -0.078 -2.063 0.766
C7 -0.155 -1.253 0.020
H8 -0.079 2.062 0.766
H9 0.171 1.661 -0.956
C10 -0.155 1.253 0.021
H11 0.827 0.000 1.521
C12 0.726 0.000 0.422
H13 2.708 -0.893 0.078
H14 2.708 0.893 0.078
H15 2.047 0.000 -1.324
C16 2.134 -0.000 -0.224

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 C7 H8 H9 C10 H11 C12 H13 H14 H15 C16
H11.09102.61052.16882.75922.66972.30944.23024.03583.44573.92263.49165.18585.61764.82334.7712
C21.09102.16891.34592.18352.21061.53373.23083.03982.39252.96442.44734.28794.55983.88273.7686
H32.61052.16891.09104.03544.23053.44572.66972.75922.30943.92273.49165.61755.18594.82314.7712
C42.16881.34591.09103.03953.23092.39252.21052.18361.53382.96452.44734.55984.28813.88263.7686
H52.75922.18354.03543.03951.78601.10794.11023.32233.09033.05432.22882.84563.74612.53262.6742
H62.66972.21064.23053.23091.78601.10364.12514.11043.39882.37572.24053.09884.11983.62473.1825
C72.30941.53373.44572.39251.10791.10363.39873.09052.50512.18761.58332.88623.57862.86812.6211
H84.23023.23082.66972.21054.11024.12513.39871.78601.10362.37552.24044.11993.09913.62483.1827
H94.03583.03982.75922.18363.32234.11043.09051.78601.10793.05432.22893.74622.84572.53272.6743
C103.44572.39252.30941.53383.09033.39882.50511.10361.10792.18761.58333.57862.88632.86812.6211
H113.92262.96443.92272.96453.05432.37572.18762.37553.05432.18761.10402.53372.53363.09602.1805
C123.49162.44733.49162.44732.22882.24051.58332.24042.22891.58331.10402.20092.20092.18931.5491
H135.18584.28795.61754.55982.84563.09882.88624.11993.74623.57862.53372.20091.78671.78941.1038
H145.61764.55985.18594.28813.74614.11983.57863.09912.84572.88632.53362.20091.78671.78941.1038
H154.82333.88274.82313.88262.53263.62472.86813.62482.53272.86813.09602.18931.78941.78941.1039
C164.77123.76864.77123.76862.67423.18252.62113.18272.67432.62112.18051.54911.10381.10381.1039

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 125.417 H1 C2 C7 122.344
C2 C4 H3 125.420 C2 C4 C10 112.203
C2 C7 H5 110.457 C2 C7 H6 112.886
C2 C7 C12 103.452 H3 C4 C10 122.342
C4 C2 C7 112.204 C4 C10 H8 112.875
C4 C10 H9 110.463 C4 C10 C12 103.452
H5 C7 H6 107.727 H5 C7 C12 110.579
H6 C7 C12 111.750 C7 C12 C10 104.577
C7 C12 H11 107.652 C7 C12 C16 113.597
H8 C10 H9 107.727 H8 C10 C12 111.746
H9 C10 C12 110.586 C10 C12 H11 107.652
C10 C12 C16 113.600 H11 C12 C16 109.402
C12 C16 H13 111.005 C12 C16 H14 111.006
C12 C16 H15 110.088 H13 C16 H14 108.065
H13 C16 H15 108.291 H14 C16 H15 108.290
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.153      
2 C -0.141      
3 H 0.153      
4 C -0.141      
5 H 0.182      
6 H 0.176      
7 C -0.371      
8 H 0.176      
9 H 0.182      
10 C -0.371      
11 H 0.181      
12 C -0.184      
13 H 0.173      
14 H 0.173      
15 H 0.173      
16 C -0.512      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.199 0.000 -0.001 0.199
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.941 -0.000 0.395
y -0.000 -37.012 -0.000
z 0.395 -0.000 -39.403
Traceless
 xyz
x 0.266 -0.000 0.395
y -0.000 1.660 -0.000
z 0.395 -0.000 -1.926
Polar
3z2-r2-3.853
x2-y2-0.929
xy-0.000
xz0.395
yz-0.000


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


<r2> (average value of r2) Å2
<r2> 167.785
(<r2>)1/2 12.953