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: 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-234.455479
Energy at 298.15K-234.466658
Nuclear repulsion energy234.886064
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 3253 3103 33.92      
2 A 3223 3074 7.72      
3 A 3138 2993 27.48      
4 A 3136 2991 52.36      
5 A 3100 2957 34.51      
6 A 3095 2952 32.73      
7 A 3054 2912 27.70      
8 A 3051 2910 24.11      
9 A 3024 2884 24.10      
10 A 3024 2884 44.95      
11 A 1715 1636 1.98      
12 A 1543 1472 9.06      
13 A 1537 1466 3.44      
14 A 1531 1461 1.01      
15 A 1527 1456 3.26      
16 A 1450 1383 5.14      
17 A 1403 1338 0.29      
18 A 1392 1328 5.48      
19 A 1361 1298 0.21      
20 A 1333 1271 1.42      
21 A 1327 1266 5.76      
22 A 1264 1205 0.58      
23 A 1194 1138 0.08      
24 A 1178 1124 3.16      
25 A 1160 1107 0.10      
26 A 1138 1086 0.48      
27 A 1097 1047 1.60      
28 A 1023 976 8.59      
29 A 1008 962 0.70      
30 A 1001 955 0.26      
31 A 958 913 5.68      
32 A 948 904 4.31      
33 A 926 883 0.03      
34 A 839 801 1.93      
35 A 792 755 0.58      
36 A 727 694 42.22      
37 A 584 557 4.36      
38 A 427 407 1.30      
39 A 401 383 0.10      
40 A 319 304 0.12      
41 A 247 236 0.01      
42 A 99 95 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 32275.0 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 30780.7 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
0.22456 0.10639 0.07851

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 2.433 1.295 -0.139
C2 1.552 0.669 -0.067
H3 2.433 -1.295 -0.139
C4 1.552 -0.669 -0.067
H5 -0.155 1.616 -0.988
H6 0.047 2.056 0.704
C7 0.153 1.228 -0.005
H8 0.047 -2.056 0.704
H9 -0.154 -1.616 -0.988
C10 0.153 -1.228 -0.005
H11 -0.779 -0.000 1.494
C12 -0.706 -0.000 0.399
H13 -2.676 0.884 0.124
H14 -2.676 -0.884 0.124
H15 -2.069 0.000 -1.285
C16 -2.112 -0.000 -0.190

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 H6 C7 H8 H9 C10 H11 C12 H13 H14 H15 C16
H11.08382.59102.15432.74232.64282.28544.20003.98663.40393.82913.43815.13275.56114.82334.7264
C21.08382.15431.33792.15832.18721.50803.20722.99692.35792.88372.40024.23794.50833.87883.7264
H32.59102.15431.08383.98684.20003.40392.64282.74242.28543.82903.43805.56115.13274.82344.7264
C42.15431.33791.08382.99703.20722.35792.18722.15831.50802.88362.40024.50834.23783.87893.7264
H52.74232.15833.98682.99701.76021.10074.04833.23163.02463.02732.19982.85153.72092.52302.6607
H62.64282.18724.20003.20721.76021.09554.11264.04833.36162.35252.21083.02094.04933.55843.1125
C72.28541.50803.40392.35791.10071.09553.36163.02462.45592.15031.55172.85273.53272.84312.5827
H84.20003.20722.64282.18724.04834.11263.36161.76021.09552.35262.21084.04933.02083.55843.1124
H93.98662.99692.74242.15833.23164.04833.02461.76021.10073.02732.19983.72092.85152.52302.6607
C103.40392.35792.28541.50803.02463.36162.45591.09551.10072.15031.55173.53272.85262.84312.5827
H113.82912.88373.82902.88363.02732.35252.15032.35263.02732.15031.09792.50222.50223.06442.1482
C123.43812.40023.43802.40022.19982.21081.55172.21082.19981.55171.09792.17722.17722.16681.5246
H135.13274.23795.56114.50832.85153.02092.85274.04933.72093.53272.50222.17721.76811.77041.0947
H145.56114.50835.13274.23783.72094.04933.53273.02082.85152.85262.50222.17721.76811.77041.0947
H154.82333.87884.82343.87892.52303.55842.84313.55842.52302.84313.06442.16681.77041.77041.0957
C164.72643.72644.72643.72642.66073.11252.58273.11242.66072.58272.14821.52461.09471.09471.0957

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 125.319 H1 C2 C7 122.884
C2 C4 H3 125.320 C2 C4 C10 111.759
C2 C7 H5 110.681 C2 C7 H6 113.356
C2 C7 C12 103.328 H3 C4 C10 122.884
C4 C2 C7 111.760 C4 C10 H8 113.354
C4 C10 H9 110.681 C4 C10 C12 103.328
H5 C7 H6 106.540 H5 C7 C12 110.917
H6 C7 C12 112.109 C7 C12 C10 104.621
C7 C12 H11 107.250 C7 C12 C16 114.182
H8 C10 H9 106.540 H8 C10 C12 112.109
H9 C10 C12 110.918 C10 C12 H11 107.251
C10 C12 C16 114.182 H11 C12 C16 108.916
C12 C16 H13 111.393 C12 C16 H14 111.392
C12 C16 H15 110.501 H13 C16 H14 107.712
H13 C16 H15 107.843 H14 C16 H15 107.843
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 0.144      
2 C -0.123      
3 H 0.144      
4 C -0.123      
5 H 0.159      
6 H 0.155      
7 C -0.330      
8 H 0.155      
9 H 0.159      
10 C -0.330      
11 H 0.160      
12 C -0.165      
13 H 0.151      
14 H 0.151      
15 H 0.149      
16 C -0.456      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.201 0.000 0.007 0.201
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.658 -0.000 -0.368
y -0.000 -36.623 0.000
z -0.368 0.000 -38.893
Traceless
 xyz
x 0.100 -0.000 -0.368
y -0.000 1.653 0.000
z -0.368 0.000 -1.753
Polar
3z2-r2-3.506
x2-y2-1.035
xy-0.000
xz-0.368
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.284 0.000 -0.059
y 0.000 9.987 -0.000
z -0.059 -0.000 6.577


<r2> (average value of r2) Å2
<r2> 163.782
(<r2>)1/2 12.798