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

using model chemistry: MP2=FULL/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/cc-pVTZ
 hartrees
Energy at 0K-194.898704
Energy at 298.15K 
HF Energy-193.969681
Nuclear repulsion energy180.675802
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/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1' 3164 3004 0.00      
2 A1' 3099 2942 0.00      
3 A1' 1566 1487 0.00      
4 A1' 1148 1090 0.00      
5 A1' 914 868 0.00      
6 A1" 1018 967 0.00      
7 A2' 3158 2998 0.00      
8 A2' 970 921 0.00      
9 A2" 3145 2986 101.04      
10 A2" 1259 1195 41.47      
11 A2" 871 827 4.75      
12 E' 3161 3001 50.57      
12 E' 3161 3001 50.57      
13 E' 3097 2940 66.40      
13 E' 3097 2940 66.40      
14 E' 1515 1439 0.78      
14 E' 1515 1439 0.78      
15 E' 1278 1213 2.86      
15 E' 1278 1213 2.86      
16 E' 1125 1068 0.49      
16 E' 1125 1068 0.49      
17 E' 933 886 0.37      
17 E' 933 886 0.37      
18 E' 542 515 0.14      
18 E' 542 515 0.14      
19 E" 1233 1171 0.00      
19 E" 1233 1171 0.00      
20 E" 1155 1097 0.00      
20 E" 1155 1097 0.00      
21 E" 1042 989 0.00      
21 E" 1042 989 0.00      
22 E" 818 776 0.00      
22 E" 818 776 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26053.3 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 24735.0 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/cc-pVTZ
ABC
0.24445 0.24445 0.21136

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.933
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 -0.933
H6 0.000 0.000 2.016
H7 0.000 0.000 -2.016
H8 0.901 1.836 0.000
H9 -0.901 1.836 0.000
H10 1.139 -1.698 0.000
H11 2.040 -0.137 0.000
H12 -2.040 -0.137 0.000
H13 -1.139 -1.698 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54391.54391.54391.86581.08352.94932.24752.24752.24752.24752.24752.2475
C21.54392.13062.13061.54392.36202.36201.08561.08563.14202.45612.45613.1420
C31.54392.13062.13061.54392.36202.36202.45613.14201.08561.08563.14202.4561
C41.54392.13062.13061.54392.36202.36203.14202.45612.45613.14201.08561.0856
C51.86581.54391.54391.54392.94931.08352.24752.24752.24752.24752.24752.2475
H61.08352.36202.36202.36202.94934.03282.87182.87182.87182.87182.87182.8718
H72.94932.36202.36202.36201.08354.03282.87182.87182.87182.87182.87182.8718
H82.24751.08562.45613.14202.24752.87182.87181.80213.54172.27823.54174.0803
H92.24751.08563.14202.45612.24752.87182.87181.80214.08033.54172.27823.5417
H102.24753.14201.08562.45612.24752.87182.87183.54174.08031.80213.54172.2782
H112.24752.45611.08563.14202.24752.87182.87182.27823.54171.80214.08033.5417
H122.24752.45613.14201.08562.24752.87182.87183.54172.27823.54174.08031.8021
H132.24753.14202.45611.08562.24752.87182.87184.08033.54172.27823.54171.8021

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 74.354 C1 C2 H8 116.383
C1 C2 H9 116.383 C1 C3 C5 74.354
C1 C3 H10 116.383 C1 C3 H11 116.383
C1 C4 C5 74.354 C1 C4 H12 116.383
C1 C4 H13 116.383 C2 C1 C3 87.264
C2 C1 C4 87.264 C2 C1 H6 127.177
C2 C5 C3 87.264 C2 C5 C4 87.264
C2 C5 H7 127.177 C3 C1 C4 87.264
C3 C1 H6 127.177 C3 C5 C4 87.264
C3 C5 H7 127.177 C4 C1 H6 127.177
C4 C5 H7 127.177 C5 C2 H8 116.383
C5 C2 H9 116.383 C5 C3 H10 116.383
C5 C3 H11 116.383 C5 C4 H12 116.383
C5 C4 H13 116.383 H8 C2 H9 112.204
H10 C3 H11 112.204 H12 C4 H13 112.204
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability