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All results from a given calculation for C5H8 (Bicyclo[1.1.1]pentane)

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at G3B3
 hartrees
Energy at 0K-195.077017
Energy at 298.15K-195.072004
HF Energy-195.260534
Nuclear repulsion energy179.077378
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 B3LYP/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 A1' 3112 2988 0.00      
2 A1' 3060 2939 0.00      
3 A1' 1581 1518 0.00      
4 A1' 1132 1087 0.00      
5 A1' 912 876 0.00      
6 A1" 1006 966 0.00      
7 A2' 3112 2989 0.00      
8 A2' 981 942 0.00      
9 A2" 3106 2983 143.03      
10 A2" 1270 1220 27.20      
11 A2" 856 822 3.25      
12 E' 3118 2994 75.05      
12 E' 3118 2994 75.05      
13 E' 3055 2934 77.97      
13 E' 3055 2934 77.97      
14 E' 1530 1469 0.01      
14 E' 1530 1469 0.01      
15 E' 1276 1225 0.83      
15 E' 1276 1225 0.84      
16 E' 1129 1084 0.44      
16 E' 1129 1084 0.44      
17 E' 909 873 0.27      
17 E' 909 873 0.27      
18 E' 548 526 0.26      
18 E' 548 526 0.26      
19 E" 1221 1172 0.00      
19 E" 1221 1172 0.00      
20 E" 1159 1113 0.00      
20 E" 1159 1113 0.00      
21 E" 1033 992 0.00      
21 E" 1033 992 0.00      
22 E" 788 756 0.00      
22 E" 788 756 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25828.6 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 24803.2 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 B3LYP/6-31G*
ABC
0.24022 0.24022 0.20756

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.940
C2 0.000 1.240 0.000
C3 1.074 -0.620 0.000
C4 -1.074 -0.620 0.000
C5 0.000 0.000 -0.940
H6 0.000 0.000 2.035
H7 0.000 0.000 -2.035
H8 0.905 1.859 0.000
H9 -0.905 1.859 0.000
H10 1.157 -1.713 0.000
H11 2.062 -0.146 0.000
H12 -2.062 -0.146 0.000
H13 -1.157 -1.713 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55651.55651.55651.88081.09412.97492.27102.27102.27102.27102.27102.2710
C21.55652.14822.14821.55652.38282.38281.09591.09593.17182.48462.48463.1718
C31.55652.14822.14821.55652.38282.38282.48463.17181.09591.09593.17182.4846
C41.55652.14822.14821.55652.38282.38283.17182.48462.48463.17181.09591.0959
C51.88081.55651.55651.55652.97491.09412.27102.27102.27102.27102.27102.2710
H61.09412.38282.38282.38282.97494.06912.90042.90042.90042.90042.90042.9004
H72.97492.38282.38282.38281.09414.06912.90042.90042.90042.90042.90042.9004
H82.27101.09592.48463.17182.27102.90042.90041.80953.58042.31453.58044.1240
H92.27101.09593.17182.48462.27102.90042.90041.80954.12403.58042.31453.5804
H102.27103.17181.09592.48462.27102.90042.90043.58044.12401.80953.58042.3145
H112.27102.48461.09593.17182.27102.90042.90042.31453.58041.80954.12403.5804
H122.27102.48463.17181.09592.27102.90042.90043.58042.31453.58044.12401.8095
H132.27103.17182.48461.09592.27102.90042.90044.12403.58042.31453.58041.8095

picture of Bicyclo[1.1.1]pentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 74.357 C1 C2 H8 116.699
C1 C2 H9 116.699 C1 C3 C5 74.357
C1 C3 H10 116.699 C1 C3 H11 116.699
C1 C4 C5 74.357 C1 C4 H12 116.699
C1 C4 H13 116.699 C2 C1 C3 87.262
C2 C1 C4 87.262 C2 C1 H6 127.179
C2 C5 C3 87.262 C2 C5 C4 87.262
C2 C5 H7 127.179 C3 C1 C4 87.262
C3 C1 H6 127.179 C3 C5 C4 87.262
C3 C5 H7 127.179 C4 C1 H6 127.179
C4 C5 H7 127.179 C5 C2 H8 116.699
C5 C2 H9 116.699 C5 C3 H10 116.699
C5 C3 H11 116.699 C5 C4 H12 116.699
C5 C4 H13 116.699 H8 C2 H9 111.347
H10 C3 H11 111.347 H12 C4 H13 111.347
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.073      
2 C -0.279      
3 C -0.279      
4 C -0.279      
5 C -0.073      
6 H 0.110      
7 H 0.110      
8 H 0.127      
9 H 0.127      
10 H 0.127      
11 H 0.127      
12 H 0.127      
13 H 0.127      


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


Electric Quadrupole moment
Quadrupole components in D Å


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> 91.981
(<r2>)1/2 9.591