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

using model chemistry: MP4/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-194.731934
Energy at 298.15K 
HF Energy-193.923009
Nuclear repulsion energy177.544118
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 MP4/6-31G*
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' 3119 3047        
2 A1' 3065 2994        
3 A1' 1586 1549        
4 A1' 1144 1117        
5 A1' 924 903        
6 A1" 1007 984        
7 A2' 3125 3053        
8 A2' 983 961        
9 A2" 3114 3042        
10 A2" 1277 1247        
11 A2" 861 841        
12 E' 3131 3058        
12 E' 3131 3058        
13 E' 3061 2991        
13 E' 3061 2991        
14 E' 1537 1502        
14 E' 1537 1501        
15 E' 1278 1249        
15 E' 1278 1249        
16 E' 1133 1107        
16 E' 1133 1107        
17 E' 918 896        
17 E' 918 896        
18 E' 555 542        
18 E' 554 541        
19 E" 1229 1200        
19 E" 1228 1200        
20 E" 1165 1138        
20 E" 1165 1138        
21 E" 1040 1016        
21 E" 1039 1015        
22 E" 807 788        
22 E" 807 788        

Unscaled Zero Point Vibrational Energy (zpe) 25953.1 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 25353.6 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/aug-cc-pVDZ
ABC
0.23586 0.23586 0.20464

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVDZ

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.952
C2 0.000 1.249 0.000
C3 1.082 -0.625 0.000
C4 -1.082 -0.625 0.000
C5 0.000 0.000 -0.952
H6 0.000 0.000 2.055
H7 0.000 0.000 -2.055
H8 0.915 1.868 0.000
H9 -0.915 1.868 0.000
H10 1.160 -1.727 0.000
H11 2.076 -0.141 0.000
H12 -2.076 -0.141 0.000
H13 -1.160 -1.727 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.57111.57111.57111.90481.10293.00772.28822.28822.28822.28822.28822.2882
C21.57112.16412.16411.57112.40532.40531.10501.10503.19462.49872.49873.1946
C31.57112.16412.16411.57112.40532.40532.49873.19461.10501.10503.19462.4987
C41.57112.16412.16411.57112.40532.40533.19462.49872.49873.19461.10501.1050
C51.90481.57111.57111.57113.00771.10292.28822.28822.28822.28822.28822.2882
H61.10292.40532.40532.40533.00774.11052.92452.92452.92452.92452.92452.9245
H73.00772.40532.40532.40531.10294.11052.92452.92452.92452.92452.92452.9245
H82.28821.10502.49873.19462.28822.92452.92451.83083.60362.32073.60364.1515
H92.28821.10503.19462.49872.28822.92452.92451.83084.15153.60362.32073.6036
H102.28823.19461.10502.49872.28822.92452.92453.60364.15151.83083.60362.3207
H112.28822.49871.10503.19462.28822.92452.92452.32073.60361.83084.15153.6036
H122.28822.49873.19461.10502.28822.92452.92453.60362.32073.60364.15151.8308
H132.28823.19462.49871.10502.28822.92452.92454.15153.60362.32073.60361.8308

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 74.633 C1 C2 H8 116.451
C1 C2 H9 116.451 C1 C3 C5 74.633
C1 C3 H10 116.451 C1 C3 H11 116.451
C1 C4 C5 74.633 C1 C4 H12 116.451
C1 C4 H13 116.451 C2 C1 C3 87.063
C2 C1 C4 87.063 C2 C1 H6 127.316
C2 C5 C3 87.063 C2 C5 C4 87.063
C2 C5 H7 127.316 C3 C1 C4 87.063
C3 C1 H6 127.316 C3 C5 C4 87.063
C3 C5 H7 127.316 C4 C1 H6 127.316
C4 C5 H7 127.316 C5 C2 H8 116.451
C5 C2 H9 116.451 C5 C3 H10 116.451
C5 C3 H11 116.451 C5 C4 H12 116.451
C5 C4 H13 116.451 H8 C2 H9 111.877
H10 C3 H11 111.877 H12 C4 H13 111.877
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability