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

using model chemistry: B2PLYP=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at B2PLYP=FULL/6-31+G**
 hartrees
Energy at 0K-195.054222
Energy at 298.15K 
HF Energy-194.812708
Nuclear repulsion energy179.461438
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 B2PLYP=FULL/6-31+G**
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' 3143 2989 0.00      
2 A1' 3087 2935 0.00      
3 A1' 1579 1502 0.00      
4 A1' 1137 1082 0.00      
5 A1' 916 871 0.00      
6 A1" 1008 959 0.00      
7 A2' 3148 2993 0.00      
8 A2' 981 933 0.00      
9 A2" 3138 2984 140.69      
10 A2" 1270 1208 41.46      
11 A2" 858 816 5.40      
12 E' 3153 2998 73.92      
12 E' 3153 2998 73.93      
13 E' 3082 2931 85.81      
13 E' 3082 2931 85.80      
14 E' 1528 1454 0.12      
14 E' 1528 1454 0.12      
15 E' 1276 1213 1.87      
15 E' 1276 1213 1.87      
16 E' 1130 1075 0.44      
16 E' 1130 1075 0.44      
17 E' 914 870 0.63      
17 E' 914 870 0.63      
18 E' 552 525 0.18      
18 E' 552 525 0.18      
19 E" 1230 1170 0.00      
19 E" 1230 1170 0.00      
20 E" 1158 1102 0.00      
20 E" 1158 1102 0.00      
21 E" 1038 987 0.00      
21 E" 1038 987 0.00      
22 E" 797 758 0.00      
22 E" 797 758 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25991.4 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 24717.8 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 B2PLYP=FULL/6-31+G**
ABC
0.24114 0.24114 0.20846

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31+G**

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.939
C2 0.000 1.238 0.000
C3 1.072 -0.619 0.000
C4 -1.072 -0.619 0.000
C5 0.000 0.000 -0.939
H6 0.000 0.000 2.030
H7 0.000 0.000 -2.030
H8 0.903 1.853 0.000
H9 -0.903 1.853 0.000
H10 1.153 -1.709 0.000
H11 2.056 -0.144 0.000
H12 -2.056 -0.144 0.000
H13 -1.153 -1.709 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55401.55401.55401.87841.09052.96892.26502.26502.26502.26502.26502.2650
C21.55402.14442.14441.55402.37752.37751.09251.09253.16412.47752.47753.1641
C31.55402.14442.14441.55402.37752.37752.47743.16411.09251.09253.16412.4775
C41.55402.14442.14441.55402.37752.37753.16412.47742.47753.16411.09251.0925
C51.87841.55401.55401.55402.96891.09052.26502.26502.26502.26502.26502.2650
H61.09052.37752.37752.37752.96894.05942.89272.89272.89272.89272.89272.8927
H72.96892.37752.37752.37751.09054.05942.89272.89272.89272.89272.89272.8927
H82.26501.09252.47743.16412.26502.89272.89271.80653.57002.30573.57004.1121
H92.26501.09253.16412.47742.26502.89272.89271.80654.11213.57002.30573.5700
H102.26503.16411.09252.47752.26502.89272.89273.57004.11211.80653.57002.3057
H112.26502.47751.09253.16412.26502.89272.89272.30573.57001.80654.11213.5700
H122.26502.47753.16411.09252.26502.89272.89273.57002.30573.57004.11211.8065
H132.26503.16412.47751.09252.26502.89272.89274.11213.57002.30573.57001.8065

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 74.368 C1 C2 H8 116.628
C1 C2 H9 116.628 C1 C3 C5 74.368
C1 C3 H10 116.628 C1 C3 H11 116.628
C1 C4 C5 74.368 C1 C4 H12 116.628
C1 C4 H13 116.628 C2 C1 C3 87.254
C2 C1 C4 87.254 C2 C1 H6 127.184
C2 C5 C3 87.254 C2 C5 C4 87.254
C2 C5 H7 127.184 C3 C1 C4 87.254
C3 C1 H6 127.184 C3 C5 C4 87.254
C3 C5 H7 127.184 C4 C1 H6 127.184
C4 C5 H7 127.184 C5 C2 H8 116.628
C5 C2 H9 116.628 C5 C3 H10 116.628
C5 C3 H11 116.628 C5 C4 H12 116.628
C5 C4 H13 116.628 H8 C2 H9 111.533
H10 C3 H11 111.533 H12 C4 H13 111.533
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability