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All results from a given calculation for C5H8 (Bicyclo[2.1.0]pentane)

using model chemistry: HF/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-193.855785
Energy at 298.15K-193.865293
Nuclear repulsion energy175.508249
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/LANL2DZ
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' 3416 3074 51.43      
2 A' 3400 3059 4.16      
3 A' 3310 2978 106.18      
4 A' 3302 2972 22.07      
5 A' 3243 2919 83.17      
6 A' 1656 1490 2.07      
7 A' 1631 1468 6.39      
8 A' 1482 1334 1.00      
9 A' 1380 1242 2.84      
10 A' 1318 1186 1.38      
11 A' 1231 1107 0.64      
12 A' 1128 1015 0.29      
13 A' 1049 944 8.08      
14 A' 1041 937 4.05      
15 A' 982 884 2.79      
16 A' 860 774 6.56      
17 A' 837 753 15.12      
18 A' 456 410 0.70      
19 A" 3394 3054 26.07      
20 A" 3288 2958 0.10      
21 A" 3227 2904 78.05      
22 A" 1635 1471 1.78      
23 A" 1439 1295 7.40      
24 A" 1409 1268 0.17      
25 A" 1337 1203 0.18      
26 A" 1256 1130 2.43      
27 A" 1234 1110 1.35      
28 A" 1183 1065 3.88      
29 A" 1069 962 5.38      
30 A" 1027 924 0.00      
31 A" 841 757 30.22      
32 A" 781 703 0.94      
33 A" 300 270 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 27569.3 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 24809.6 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 HF/LANL2DZ
ABC
0.30314 0.20201 0.15823

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.250 -0.543 0.768
C2 -0.250 -0.543 -0.768
C3 -0.250 0.998 0.786
C4 -0.250 0.998 -0.786
C5 0.956 -1.048 0.000
H6 -0.793 -1.169 1.446
H7 -0.793 -1.169 -1.446
H8 0.599 1.462 1.273
H9 0.599 1.462 -1.273
H10 -1.157 1.420 1.196
H11 -1.157 1.420 -1.196
H12 1.871 -0.482 0.000
H13 1.104 -2.112 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.53581.54162.18901.51651.06992.36342.23552.98442.20522.92182.25652.2102
C21.53582.18901.54161.51652.36341.06992.98442.23552.92182.20522.25652.2102
C31.54162.18901.57252.50232.32913.15781.08312.27501.08122.22062.70333.4821
C42.18901.54161.57252.50233.15782.32912.27501.08312.22061.08122.70333.4821
C51.51651.51652.50232.50232.27212.27212.83702.83703.46293.46291.07561.0738
H61.06992.36342.32913.15782.27212.89172.98124.03082.62673.71723.10712.5649
H72.36341.06993.15782.32912.27212.89174.03082.98123.71722.62673.10712.5649
H82.23552.98441.08312.27502.83702.98124.03082.54541.75843.03012.64893.8271
H92.98442.23552.27501.08312.83704.03082.98122.54543.03011.75842.64893.8271
H102.20522.92181.08122.22063.46292.62673.71721.75843.03012.39233.77084.3616
H112.92182.20522.22061.08123.46293.71722.62673.03011.75842.39233.77084.3616
H122.25652.25652.70332.70331.07563.10713.10712.64892.64893.77083.77081.8006
H132.21022.21023.48213.48211.07382.56492.56493.82713.82714.36164.36161.8006

picture of Bicyclo[2.1.0]pentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 90.683 C1 C2 C5 59.578
C1 C2 H7 129.318 C1 C3 C4 89.317
C1 C3 H8 115.695 C1 C3 H10 113.275
C1 C5 C2 60.844 C1 C5 H12 120.076
C1 C5 H13 116.090 C2 C1 C3 90.683
C2 C1 C5 59.578 C2 C1 H6 129.318
C2 C4 C3 89.317 C2 C4 H9 115.695
C2 C4 H11 113.275 C2 C5 H12 120.076
C2 C5 H13 116.090 C3 C1 C5 109.814
C3 C1 H6 125.233 C3 C4 H9 116.687
C3 C4 H11 112.280 C4 C2 C5 109.814
C4 C2 H7 125.233 C4 C3 H8 116.687
C4 C3 H10 112.280 C5 C1 H6 121.964
C5 C2 H7 121.964 H8 C3 H10 108.675
H9 C4 H11 108.675 H12 C5 H13 113.804
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.208      
2 C -0.208      
3 C -0.358      
4 C -0.358      
5 C -0.425      
6 H 0.226      
7 H 0.226      
8 H 0.178      
9 H 0.178      
10 H 0.180      
11 H 0.180      
12 H 0.172      
13 H 0.219      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.231 0.026 0.000 0.233
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.844 0.180 0.000
y 0.180 -31.236 0.000
z 0.000 0.000 -33.062
Traceless
 xyz
x 0.305 0.180 0.000
y 0.180 1.217 0.000
z 0.000 0.000 -1.521
Polar
3z2-r2-3.043
x2-y2-0.608
xy0.180
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.266 0.000 0.141
y 0.000 6.984 0.000
z 0.141 0.000 6.287


<r2> (average value of r2) Å2
<r2> 98.978
(<r2>)1/2 9.949