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

using model chemistry: MP2/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 MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-194.651441
Energy at 298.15K 
HF Energy-193.924267
Nuclear repulsion energy178.344791
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/aug-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' 3147 3018 0.00      
2 A1' 3078 2952 0.00      
3 A1' 1542 1479 0.00      
4 A1' 1131 1085 0.00      
5 A1' 907 870 0.00      
6 A1" 995 954 0.00      
7 A2' 3153 3024 0.00      
8 A2' 948 909 0.00      
9 A2" 3142 3014 112.39      
10 A2" 1237 1186 35.72      
11 A2" 853 818 4.04      
12 E' 3157 3028 59.48      
12 E' 3157 3028 59.48      
13 E' 3075 2949 75.91      
13 E' 3075 2949 75.91      
14 E' 1490 1429 0.38      
14 E' 1490 1429 0.38      
15 E' 1250 1199 2.44      
15 E' 1250 1199 2.44      
16 E' 1105 1060 0.56      
16 E' 1105 1060 0.56      
17 E' 911 874 0.35      
17 E' 911 874 0.35      
18 E' 538 515 0.07      
18 E' 538 515 0.07      
19 E" 1199 1150 0.00      
19 E" 1199 1150 0.00      
20 E" 1136 1090 0.00      
20 E" 1136 1090 0.00      
21 E" 1019 977 0.00      
21 E" 1019 977 0.00      
22 E" 800 768 0.00      
22 E" 800 768 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25746.4 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 24690.8 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 MP2/aug-cc-pVDZ
ABC
0.23808 0.23808 0.20651

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.947
C2 0.000 1.244 0.000
C3 1.077 -0.622 0.000
C4 -1.077 -0.622 0.000
C5 0.000 0.000 -0.947
H6 0.000 0.000 2.047
H7 0.000 0.000 -2.047
H8 0.914 1.860 0.000
H9 -0.914 1.860 0.000
H10 1.154 -1.721 0.000
H11 2.067 -0.139 0.000
H12 -2.067 -0.139 0.000
H13 -1.154 -1.721 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.56331.56331.56331.89481.09992.99482.27832.27832.27832.27832.27832.2783
C21.56332.15382.15381.56332.39542.39541.10191.10193.18122.48692.48693.1812
C31.56332.15382.15381.56332.39542.39542.48693.18121.10191.10193.18122.4869
C41.56332.15382.15381.56332.39542.39543.18122.48692.48693.18121.10191.1019
C51.89481.56331.56331.56332.99481.09992.27832.27832.27832.27832.27832.2783
H61.09992.39542.39542.39542.99484.09472.91292.91292.91292.91292.91292.9129
H72.99482.39542.39542.39541.09994.09472.91292.91292.91292.91292.91292.9129
H82.27831.10192.48693.18122.27832.91292.91291.82703.58882.30773.58884.1347
H92.27831.10193.18122.48692.27832.91292.91291.82704.13473.58882.30773.5888
H102.27833.18121.10192.48692.27832.91292.91293.58884.13471.82703.58882.3077
H112.27832.48691.10193.18122.27832.91292.91292.30773.58881.82704.13473.5888
H122.27832.48693.18121.10192.27832.91292.91293.58882.30773.58884.13471.8270
H132.27833.18122.48691.10192.27832.91292.91294.13473.58882.30773.58881.8270

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 74.607 C1 C2 H8 116.414
C1 C2 H9 116.414 C1 C3 C5 74.607
C1 C3 H10 116.414 C1 C3 H11 116.414
C1 C4 C5 74.607 C1 C4 H12 116.414
C1 C4 H13 116.414 C2 C1 C3 87.081
C2 C1 C4 87.081 C2 C1 H6 127.303
C2 C5 C3 87.081 C2 C5 C4 87.081
C2 C5 H7 127.303 C3 C1 C4 87.081
C3 C1 H6 127.303 C3 C5 C4 87.081
C3 C5 H7 127.303 C4 C1 H6 127.303
C4 C5 H7 127.303 C5 C2 H8 116.414
C5 C2 H9 116.414 C5 C3 H10 116.414
C5 C3 H11 116.414 C5 C4 H12 116.414
C5 C4 H13 116.414 H8 C2 H9 111.992
H10 C3 H11 111.992 H12 C4 H13 111.992
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability