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

using model chemistry: MP3=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 MP3=FULL/6-31G*
 hartrees
Energy at 0K-194.617844
Energy at 298.15K 
HF Energy-193.905010
Nuclear repulsion energy179.612921
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 MP3=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' 3178 2982 0.00      
2 A1' 3119 2927 0.00      
3 A1' 1609 1510 0.00      
4 A1' 1166 1094 0.00      
5 A1' 945 887 0.00      
6 A1" 1027 964 0.00      
7 A2' 3176 2980 0.00      
8 A2' 998 936 0.00      
9 A2" 3172 2976 107.69      
10 A2" 1306 1226 34.53      
11 A2" 882 828 5.21      
12 E' 3181 2985 58.90      
12 E' 3181 2985 58.90      
13 E' 3114 2922 63.26      
13 E' 3114 2922 63.26      
14 E' 1560 1464 0.22      
14 E' 1560 1464 0.22      
15 E' 1307 1226 1.77      
15 E' 1307 1226 1.77      
16 E' 1152 1081 0.30      
16 E' 1152 1081 0.30      
17 E' 938 880 0.68      
17 E' 938 880 0.68      
18 E' 567 532 0.26      
18 E' 567 532 0.26      
19 E" 1254 1176 0.00      
19 E" 1254 1176 0.00      
20 E" 1190 1117 0.00      
20 E" 1190 1117 0.00      
21 E" 1059 994 0.00      
21 E" 1059 994 0.00      
22 E" 827 776 0.00      
22 E" 827 776 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26438.1 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 24806.8 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 MP3=FULL/6-31G*
ABC
0.24160 0.24160 0.20910

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=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 1.235 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 2.031
H7 0.000 0.000 -2.031
H8 0.904 1.852 0.000
H9 -0.904 1.852 0.000
H10 1.152 -1.709 0.000
H11 2.056 -0.143 0.000
H12 -2.056 -0.143 0.000
H13 -1.152 -1.709 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55151.55151.55151.87751.09242.96992.26472.26472.26472.26472.26472.2647
C21.55152.13962.13961.55152.37732.37731.09441.09443.16162.47522.47523.1616
C31.55152.13962.13961.55152.37732.37732.47523.16161.09441.09443.16162.4752
C41.55152.13962.13961.55152.37732.37733.16162.47522.47523.16161.09441.0944
C51.87751.55151.55151.55152.96991.09242.26472.26472.26472.26472.26472.2647
H61.09242.37732.37732.37732.96994.06222.89362.89362.89362.89362.89362.8936
H72.96992.37732.37732.37731.09244.06222.89362.89362.89362.89362.89362.8936
H82.26471.09442.47523.16162.26472.89362.89361.80833.56972.30373.56974.1119
H92.26471.09443.16162.47522.26472.89362.89361.80834.11193.56972.30373.5697
H102.26473.16161.09442.47522.26472.89362.89363.56974.11191.80833.56972.3037
H112.26472.47521.09443.16162.26472.89362.89362.30373.56971.80834.11193.5697
H122.26472.47523.16161.09442.26472.89362.89363.56972.30373.56974.11191.8083
H132.26473.16162.47521.09442.26472.89362.89364.11193.56972.30373.56971.8083

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 74.464 C1 C2 H8 116.658
C1 C2 H9 116.658 C1 C3 C5 74.464
C1 C3 H10 116.658 C1 C3 H11 116.658
C1 C4 C5 74.464 C1 C4 H12 116.658
C1 C4 H13 116.658 C2 C1 C3 87.185
C2 C1 C4 87.185 C2 C1 H6 127.232
C2 C5 C3 87.185 C2 C5 C4 87.185
C2 C5 H7 127.232 C3 C1 C4 87.185
C3 C1 H6 127.232 C3 C5 C4 87.185
C3 C5 H7 127.232 C4 C1 H6 127.232
C4 C5 H7 127.232 C5 C2 H8 116.658
C5 C2 H9 116.658 C5 C3 H10 116.658
C5 C3 H11 116.658 C5 C4 H12 116.658
C5 C4 H13 116.658 H8 C2 H9 111.403
H10 C3 H11 111.403 H12 C4 H13 111.403
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability