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

using model chemistry: CCSD=FULL/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 CCSD=FULL/cc-pVDZ
 hartrees
Energy at 0K-194.683396
Energy at 298.15K 
HF Energy-193.917961
Nuclear repulsion energy178.369080
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 CCSD=FULL/cc-pVDZ
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' 3153 3153 0.00      
2 A1' 3087 3087 0.00      
3 A1' 1554 1554 0.00      
4 A1' 1146 1146 0.00      
5 A1' 928 928 0.00      
6 A1" 1003 1003 0.00      
7 A2' 3148 3148 0.00      
8 A2' 958 958 0.00      
9 A2" 3146 3146 106.91      
10 A2" 1275 1275 26.53      
11 A2" 861 861 4.30      
12 E' 3155 3155 61.25      
12 E' 3155 3155 61.25      
13 E' 3081 3081 69.44      
13 E' 3081 3081 69.44      
14 E' 1504 1504 0.04      
14 E' 1504 1504 0.04      
15 E' 1282 1282 1.33      
15 E' 1282 1282 1.33      
16 E' 1122 1122 0.59      
16 E' 1122 1122 0.59      
17 E' 918 918 0.37      
17 E' 918 918 0.37      
18 E' 542 542 0.20      
18 E' 542 542 0.20      
19 E" 1220 1220 0.00      
19 E" 1220 1220 0.00      
20 E" 1165 1165 0.00      
20 E" 1165 1165 0.00      
21 E" 1033 1033 0.00      
21 E" 1033 1033 0.00      
22 E" 808 808 0.00      
22 E" 808 808 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25960.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 25960.2 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 CCSD=FULL/cc-pVDZ
ABC
0.23824 0.23824 0.20649

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.946
C2 0.000 1.243 0.000
C3 1.076 -0.621 0.000
C4 -1.076 -0.621 0.000
C5 0.000 0.000 -0.946
H6 0.000 0.000 2.047
H7 0.000 0.000 -2.047
H8 0.913 1.863 0.000
H9 -0.913 1.863 0.000
H10 1.157 -1.722 0.000
H11 2.070 -0.141 0.000
H12 -2.070 -0.141 0.000
H13 -1.157 -1.722 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.56221.56221.56221.89261.10082.99352.28002.28002.28002.28002.28002.2800
C21.56222.15292.15291.56222.39502.39501.10331.10333.18252.48962.48963.1825
C31.56222.15292.15291.56222.39502.39502.48963.18251.10331.10333.18252.4896
C41.56222.15292.15291.56222.39502.39503.18252.48962.48963.18251.10331.1033
C51.89261.56221.56221.56222.99351.10082.28002.28002.28002.28002.28002.2800
H61.10082.39502.39502.39502.99354.09432.91442.91442.91442.91442.91442.9144
H72.99352.39502.39502.39501.10084.09432.91442.91442.91442.91442.91442.9144
H82.28001.10332.48963.18252.28002.91442.91441.82563.59292.31363.59294.1392
H92.28001.10333.18252.48962.28002.91442.91441.82564.13923.59292.31363.5929
H102.28003.18251.10332.48962.28002.91442.91443.59294.13921.82563.59292.3136
H112.28002.48961.10333.18252.28002.91442.91442.31363.59291.82564.13923.5929
H122.28002.48963.18251.10332.28002.91442.91443.59292.31363.59294.13921.8256
H132.28003.18252.48961.10332.28002.91442.91444.13923.59292.31363.59291.8256

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 74.567 C1 C2 H8 116.548
C1 C2 H9 116.548 C1 C3 C5 74.567
C1 C3 H10 116.548 C1 C3 H11 116.548
C1 C4 C5 74.567 C1 C4 H12 116.548
C1 C4 H13 116.548 C2 C1 C3 87.110
C2 C1 C4 87.110 C2 C1 H6 127.284
C2 C5 C3 87.110 C2 C5 C4 87.110
C2 C5 H7 127.284 C3 C1 C4 87.110
C3 C1 H6 127.284 C3 C5 C4 87.110
C3 C5 H7 127.284 C4 C1 H6 127.284
C4 C5 H7 127.284 C5 C2 H8 116.548
C5 C2 H9 116.548 C5 C3 H10 116.548
C5 C3 H11 116.548 C5 C4 H12 116.548
C5 C4 H13 116.548 H8 C2 H9 111.647
H10 C3 H11 111.647 H12 C4 H13 111.647
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability