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

using model chemistry: MP2=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at MP2=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-194.927598
Energy at 298.15K 
HF Energy-193.970622
Nuclear repulsion energy180.588180
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 MP2=FULL/aug-cc-pVTZ
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' 3147 2994 0.00      
2 A1' 3090 2939 0.00      
3 A1' 1572 1496 0.00      
4 A1' 1148 1093 0.00      
5 A1' 912 868 0.00      
6 A1" 1022 972 0.00      
7 A2' 3153 2999 0.00      
8 A2' 968 921 0.00      
9 A2" 3142 2989 101.16      
10 A2" 1253 1193 41.03      
11 A2" 870 827 4.38      
12 E' 3155 3002 50.18      
12 E' 3155 3002 50.18      
13 E' 3084 2934 69.41      
13 E' 3084 2934 69.41      
14 E' 1518 1444 0.99      
14 E' 1518 1444 0.99      
15 E' 1263 1201 3.16      
15 E' 1263 1201 3.16      
16 E' 1117 1062 0.48      
16 E' 1117 1062 0.48      
17 E' 930 885 0.37      
17 E' 930 885 0.37      
18 E' 541 514 0.11      
18 E' 541 514 0.11      
19 E" 1222 1162 0.00      
19 E" 1222 1162 0.00      
20 E" 1154 1098 0.00      
20 E" 1154 1098 0.00      
21 E" 1040 989 0.00      
21 E" 1040 989 0.00      
22 E" 817 777 0.00      
22 E" 817 777 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25977.7 cm-1
Scaled (by 0.9514) Zero Point Vibrational Energy (zpe) 24715.2 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 MP2=FULL/aug-cc-pVTZ
ABC
0.24420 0.24420 0.21148

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVTZ

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.934
C2 0.000 1.230 0.000
C3 1.065 -0.615 0.000
C4 -1.065 -0.615 0.000
C5 0.000 0.000 -0.934
H6 0.000 0.000 2.020
H7 0.000 0.000 -2.020
H8 0.904 1.835 0.000
H9 -0.904 1.835 0.000
H10 1.137 -1.700 0.000
H11 2.041 -0.134 0.000
H12 -2.041 -0.134 0.000
H13 -1.137 -1.700 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54421.54421.54421.86851.08622.95472.24842.24842.24842.24842.24842.2484
C21.54422.12962.12961.54422.36512.36511.08771.08773.14242.45462.45463.1424
C31.54422.12962.12961.54422.36512.36512.45463.14241.08771.08773.14242.4546
C41.54422.12962.12961.54422.36512.36513.14242.45462.45463.14241.08771.0877
C51.86851.54421.54421.54422.95471.08622.24842.24842.24842.24842.24842.2484
H61.08622.36512.36512.36512.95474.04082.87482.87482.87482.87482.87482.8748
H72.95472.36512.36512.36511.08624.04082.87482.87482.87482.87482.87482.8748
H82.24841.08772.45463.14242.24842.87482.87481.80773.54222.27363.54224.0814
H92.24841.08773.14242.45462.24842.87482.87481.80774.08143.54222.27363.5422
H102.24843.14241.08772.45462.24842.87482.87483.54224.08141.80773.54222.2736
H112.24842.45461.08773.14242.24842.87482.87482.27363.54221.80774.08143.5422
H122.24842.45463.14241.08772.24842.87482.87483.54222.27363.54224.08141.8077
H132.24843.14242.45461.08772.24842.87482.87484.08143.54222.27363.54221.8077

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 74.459 C1 C2 H8 116.288
C1 C2 H9 116.288 C1 C3 C5 74.459
C1 C3 H10 116.288 C1 C3 H11 116.288
C1 C4 C5 74.459 C1 C4 H12 116.288
C1 C4 H13 116.288 C2 C1 C3 87.188
C2 C1 C4 87.188 C2 C1 H6 127.229
C2 C5 C3 87.188 C2 C5 C4 87.188
C2 C5 H7 127.229 C3 C1 C4 87.188
C3 C1 H6 127.229 C3 C5 C4 87.188
C3 C5 H7 127.229 C4 C1 H6 127.229
C4 C5 H7 127.229 C5 C2 H8 116.288
C5 C2 H9 116.288 C5 C3 H10 116.288
C5 C3 H11 116.288 C5 C4 H12 116.288
C5 C4 H13 116.288 H8 C2 H9 112.407
H10 C3 H11 112.407 H12 C4 H13 112.407
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability