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All results from a given calculation for C5H6 (Bicyclo[2.1.0]pent-2-ene)

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-192.744070
Energy at 298.15K-192.750645
Nuclear repulsion energy161.182877
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 HF/6-311G*
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 3379 3056 17.92      
2 A 3360 3039 56.34      
3 A 3342 3023 9.05      
4 A 3255 2944 45.98      
5 A 1749 1582 7.61      
6 A 1616 1461 1.31      
7 A 1423 1287 0.24      
8 A 1306 1181 1.00      
9 A 1199 1084 2.07      
10 A 1112 1005 2.27      
11 A 1040 941 4.02      
12 A 967 875 3.63      
13 A 870 787 0.13      
14 A 819 741 81.11      
15 A 464 420 7.13      
16 A 3351 3031 40.29      
17 A 3340 3020 0.56      
18 A 1444 1306 23.35      
19 A 1338 1210 0.08      
20 A 1202 1087 2.46      
21 A 1157 1046 8.20      
22 A 1143 1034 0.11      
23 A 1043 944 12.98      
24 A 983 889 2.96      
25 A 903 817 0.78      
26 A 845 764 39.57      
27 A 497 449 1.88      

Unscaled Zero Point Vibrational Energy (zpe) 21573.4 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 19511.0 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 HF/6-311G*
ABC
0.37047 0.21826 0.17578

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.265 1.054 0.662
C2 -0.265 1.054 -0.662
C3 -0.265 -0.462 0.754
C4 -0.265 -0.462 -0.754
C5 0.921 -1.009 0.000
H6 -0.143 1.821 1.406
H7 -0.143 1.821 -1.406
H8 -0.874 -1.071 1.395
H9 -0.874 -1.071 -1.395
H10 1.852 -0.469 0.000
H11 1.022 -2.084 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
C11.32481.51902.07502.47051.07492.20902.32923.02002.69143.4561
C21.32482.07501.51902.47052.20901.07493.02002.32922.69143.4561
C31.51902.07501.50841.50832.37753.14531.07352.31522.24772.2040
C42.07501.51901.50841.50833.14532.37752.31521.07352.24772.2040
C52.47052.47051.50831.50833.33473.33472.27412.27411.07651.0794
H61.07492.20902.37753.14533.33472.81112.98354.09183.34744.3111
H72.20901.07493.14532.37753.33472.81114.09182.98353.34744.3111
H82.32923.02001.07352.31522.27412.98354.09182.78943.12102.5628
H93.02002.32922.31521.07352.27414.09182.98352.78943.12102.5628
H102.69142.69142.24772.24771.07653.34743.34743.12103.12101.8152
H113.45613.45612.20402.20401.07944.31114.31112.56282.56281.8152

picture of Bicyclo[2.1.0]pent-2-ene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 93.465 C1 C2 H7 133.736
C1 C3 C4 86.535 C1 C3 C5 109.387
C1 C3 H8 127.055 C2 C1 C3 93.465
C2 C1 H6 133.736 C2 C4 C3 86.535
C2 C4 C5 109.387 C2 C4 H9 127.055
C3 C1 H6 132.105 C3 C4 C5 59.997
C3 C4 H9 126.631 C3 C5 C4 60.005
C3 C5 H10 119.892 C3 C5 H11 115.803
C4 C2 H7 132.105 C4 C3 C5 59.997
C4 C3 H8 126.631 C4 C5 H10 119.892
C4 C5 H11 115.803 C5 C3 H8 122.584
C5 C4 H9 122.584 H10 C5 H11 114.694
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.189 -0.193   -0.273
2 C -0.189 -0.193   -0.273
3 C -0.257 0.047   0.043
4 C -0.257 0.047   0.043
5 C -0.388 -0.303   -0.440
6 H 0.203 0.136   0.195
7 H 0.203 0.136   0.195
8 H 0.217 0.044   0.081
9 H 0.217 0.044   0.081
10 H 0.219 0.118   0.186
11 H 0.222 0.118   0.163


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.145 -0.301 0.000 0.334
CHELPG        
AIM        
ESP 0.142 -0.288 0.000 0.321


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.924 0.786 0.000
y 0.786 -28.524 0.000
z 0.000 0.000 -29.822
Traceless
 xyz
x -2.751 0.786 0.000
y 0.786 2.349 0.000
z 0.000 0.000 0.402
Polar
3z2-r20.804
x2-y2-3.399
xy0.786
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.718 -0.451 0.000
y -0.451 7.455 0.000
z 0.000 0.000 7.462


<r2> (average value of r2) Å2
<r2> 87.050
(<r2>)1/2 9.330