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

using model chemistry: MP4=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at MP4=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-195.005777
Energy at 298.15K 
HF Energy-193.965486
Nuclear repulsion energy179.691771
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 MP4=FULL/6-311+G(3df,2p)
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' 3118 3118        
2 A1' 3111 3111        
3 A1' 3051 3051        
4 A1' 1552 1552        
5 A1' 1130 1130        
6 A1' 909 909        
7 A1" 1003 1003        
8 A2' 957 957        
9 A2" 3106 3106        
10 A2" 1250 1250        
11 A2" 856 856        
12 E' 3122 3122        
12 E' 3122 3122        
13 E' 3047 3047        
13 E' 3047 3047        
14 E' 1500 1500        
14 E' 1499 1499        
15 E' 1265 1265        
15 E' 1265 1265        
16 E' 1115 1115        
16 E' 1115 1115        
17 E' 914 914        
17 E' 914 914        
18 E' 540 540        
18 E' 539 539        
19 E" 1215 1215        
19 E" 1214 1214        
20 E" 1147 1147        
20 E" 1147 1147        
21 E" 1030 1030        
21 E" 1030 1030        
22 E" 801 801        
22 E" 801 801        

Unscaled Zero Point Vibrational Energy (zpe) 25715.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 25715.8 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 MP4=FULL/6-311+G(3df,2p)
ABC
0.24176 0.24176 0.20919

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311+G(3df,2p)

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.938
C2 0.000 1.236 0.000
C3 1.070 -0.618 0.000
C4 -1.070 -0.618 0.000
C5 0.000 0.000 -0.938
H6 0.000 0.000 2.029
H7 0.000 0.000 -2.029
H8 0.905 1.848 0.000
H9 -0.905 1.848 0.000
H10 1.148 -1.708 0.000
H11 2.053 -0.140 0.000
H12 -2.053 -0.140 0.000
H13 -1.148 -1.708 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55181.55181.55181.87701.09052.96742.26132.26132.26132.26132.26132.2613
C21.55182.14062.14061.55182.37572.37571.09231.09233.15932.47122.47123.1593
C31.55182.14062.14061.55182.37572.37572.47123.15931.09231.09233.15932.4712
C41.55182.14062.14061.55182.37572.37573.15932.47122.47123.15931.09231.0923
C51.87701.55181.55181.55182.96741.09052.26132.26132.26132.26132.26132.2613
H61.09052.37572.37572.37572.96744.05792.88962.88962.88962.88962.88962.8896
H72.96742.37572.37572.37571.09054.05792.88962.88962.88962.88962.88962.8896
H82.26131.09232.47123.15932.26132.88962.88961.80983.56352.29553.56354.1053
H92.26131.09233.15932.47122.26132.88962.88961.80984.10533.56352.29553.5635
H102.26133.15931.09232.47122.26132.88962.88963.56354.10531.80983.56352.2955
H112.26132.47121.09233.15932.26132.88962.88962.29553.56351.80984.10533.5635
H122.26132.47123.15931.09232.26132.88962.88963.56352.29553.56354.10531.8098
H132.26133.15932.47121.09232.26132.88962.88964.10533.56352.29553.56351.8098

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 74.422 C1 C2 H8 116.493
C1 C2 H9 116.493 C1 C3 C5 74.422
C1 C3 H10 116.493 C1 C3 H11 116.493
C1 C4 C5 74.422 C1 C4 H12 116.493
C1 C4 H13 116.493 C2 C1 C3 87.215
C2 C1 C4 87.215 C2 C1 H6 127.211
C2 C5 C3 87.215 C2 C5 C4 87.215
C2 C5 H7 127.211 C3 C1 C4 87.215
C3 C1 H6 127.211 C3 C5 C4 87.215
C3 C5 H7 127.211 C4 C1 H6 127.211
C4 C5 H7 127.211 C5 C2 H8 116.493
C5 C2 H9 116.493 C5 C3 H10 116.493
C5 C3 H11 116.493 C5 C4 H12 116.493
C5 C4 H13 116.493 H8 C2 H9 111.872
H10 C3 H11 111.872 H12 C4 H13 111.872
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability