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

using model chemistry: CCSD=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at CCSD=FULL/6-31G*
 hartrees
Energy at 0K-194.627724
Energy at 298.15K 
HF Energy-193.904709
Nuclear repulsion energy179.474876
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 CCSD=FULL/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' 3144 2987 0.00      
2 A1' 3088 2933 0.00      
3 A1' 1600 1519 0.00      
4 A1' 1160 1102 0.00      
5 A1' 940 893 0.00      
6 A1" 1021 970 0.00      
7 A2' 3141 2983 0.00      
8 A2' 993 943 0.00      
9 A2" 3139 2981 112.90      
10 A2" 1298 1233 31.81      
11 A2" 876 832 5.08      
12 E' 3147 2989 62.48      
12 E' 3147 2989 62.48      
13 E' 3082 2928 65.38      
13 E' 3082 2928 65.38      
14 E' 1551 1473 0.14      
14 E' 1551 1473 0.14      
15 E' 1299 1234 1.51      
15 E' 1299 1234 1.51      
16 E' 1146 1088 0.31      
16 E' 1146 1088 0.31      
17 E' 932 885 0.63      
17 E' 932 885 0.63      
18 E' 565 536 0.24      
18 E' 565 536 0.24      
19 E" 1248 1185 0.00      
19 E" 1248 1185 0.00      
20 E" 1184 1125 0.00      
20 E" 1184 1125 0.00      
21 E" 1054 1001 0.00      
21 E" 1054 1001 0.00      
22 E" 821 780 0.00      
22 E" 821 780 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26228.0 cm-1
Scaled (by 0.9498) Zero Point Vibrational Energy (zpe) 24911.3 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 CCSD=FULL/6-31G*
ABC
0.24130 0.24130 0.20881

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.939
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 -0.939
H6 0.000 0.000 2.034
H7 0.000 0.000 -2.034
H8 0.906 1.855 0.000
H9 -0.906 1.855 0.000
H10 1.153 -1.712 0.000
H11 2.059 -0.143 0.000
H12 -2.059 -0.143 0.000
H13 -1.153 -1.712 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55201.55201.55201.87791.09482.97272.26742.26742.26742.26742.26742.2674
C21.55202.14042.14041.55202.37982.37981.09681.09683.16492.47802.47803.1649
C31.55202.14042.14041.55202.37982.37982.47803.16491.09681.09683.16492.4780
C41.55202.14042.14041.55202.37982.37983.16492.47802.47803.16491.09681.0968
C51.87791.55201.55201.55202.97271.09482.26742.26742.26742.26742.26742.2674
H61.09482.37982.37982.37982.97274.06762.89762.89762.89762.89762.89762.8976
H72.97272.37982.37982.37981.09484.06762.89762.89762.89762.89762.89762.8976
H82.26741.09682.47803.16492.26742.89762.89761.81113.57482.30683.57484.1178
H92.26741.09683.16492.47802.26742.89762.89761.81114.11783.57482.30683.5748
H102.26743.16491.09682.47802.26742.89762.89763.57484.11781.81113.57482.3068
H112.26742.47801.09683.16492.26742.89762.89762.30683.57481.81114.11783.5748
H122.26742.47803.16491.09682.26742.89762.89763.57482.30683.57484.11781.8111
H132.26743.16492.47801.09682.26742.89762.89764.11783.57482.30683.57481.8111

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 74.456 C1 C2 H8 116.697
C1 C2 H9 116.697 C1 C3 C5 74.456
C1 C3 H10 116.697 C1 C3 H11 116.697
C1 C4 C5 74.456 C1 C4 H12 116.697
C1 C4 H13 116.697 C2 C1 C3 87.191
C2 C1 C4 87.191 C2 C1 H6 127.228
C2 C5 C3 87.191 C2 C5 C4 87.191
C2 C5 H7 127.228 C3 C1 C4 87.191
C3 C1 H6 127.228 C3 C5 C4 87.191
C3 C5 H7 127.228 C4 C1 H6 127.228
C4 C5 H7 127.228 C5 C2 H8 116.697
C5 C2 H9 116.697 C5 C3 H10 116.697
C5 C3 H11 116.697 C5 C4 H12 116.697
C5 C4 H13 116.697 H8 C2 H9 111.301
H10 C3 H11 111.302 H12 C4 H13 111.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability