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All results from a given calculation for C5H8 (Bicyclo[2.1.0]pentane)

using model chemistry: MP2=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/6-31G*
 hartrees
Energy at 0K-194.598973
Energy at 298.15K-194.608221
HF Energy-193.926312
Nuclear repulsion energy176.472447
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/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 A' 3273 3084 14.78      
2 A' 3249 3061 9.21      
3 A' 3190 3006 39.28      
4 A' 3170 2987 14.84      
5 A' 3117 2937 46.09      
6 A' 1569 1478 0.90      
7 A' 1543 1454 2.52      
8 A' 1419 1337 0.30      
9 A' 1292 1217 1.38      
10 A' 1252 1179 0.26      
11 A' 1170 1102 0.52      
12 A' 1069 1007 0.03      
13 A' 1018 959 2.97      
14 A' 981 924 8.23      
15 A' 944 890 1.05      
16 A' 817 770 0.50      
17 A' 811 764 8.13      
18 A' 426 401 0.72      
19 A" 3241 3053 16.43      
20 A" 3174 2991 0.12      
21 A" 3111 2931 39.20      
22 A" 1542 1453 0.18      
23 A" 1351 1273 5.71      
24 A" 1300 1225 1.81      
25 A" 1260 1187 0.03      
26 A" 1160 1093 0.08      
27 A" 1118 1053 4.64      
28 A" 1093 1030 0.08      
29 A" 1033 974 4.27      
30 A" 965 909 0.32      
31 A" 831 783 13.85      
32 A" 692 652 0.19      
33 A" 263 248 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 26220.4 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 24704.9 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/6-31G*
ABC
0.30642 0.20548 0.16090

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 -0.538 0.761
C2 -0.246 -0.538 -0.761
C3 -0.246 0.988 0.780
C4 -0.246 0.988 -0.780
C5 0.943 -1.035 0.000
H6 -0.796 -1.179 1.444
H7 -0.796 -1.179 -1.444
H8 0.609 1.458 1.278
H9 0.609 1.458 -1.278
H10 -1.167 1.411 1.189
H11 -1.167 1.411 -1.189
H12 1.872 -0.466 0.000
H13 1.080 -2.113 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52211.52612.16871.49671.08632.36142.23232.97902.19762.90692.25172.1950
C21.52212.16871.52611.49672.36141.08632.97902.23232.90692.19762.25172.1950
C31.52612.16871.55982.47312.33243.15361.09582.27781.09292.21462.68513.4618
C42.16871.52611.55982.47313.15362.33242.27781.09582.21461.09292.68513.4618
C51.49671.49672.47312.47312.26482.26482.82192.82193.44243.44241.08961.0865
H61.08632.36142.33243.15362.26482.88812.99284.04242.62893.71223.11622.5446
H72.36141.08633.15362.33242.26482.88814.04242.99283.71222.62893.11622.5446
H82.23232.97901.09582.27782.82192.99284.04242.55651.77893.04062.63293.8224
H92.97902.23232.27781.09582.82194.04242.99282.55653.04061.77892.63293.8224
H102.19762.90691.09292.21463.44242.62893.71221.77893.04062.37853.76484.3453
H112.90692.19762.21461.09293.44243.71222.62893.04061.77892.37853.76484.3453
H122.25172.25172.68512.68511.08963.11623.11622.63292.63293.76483.76481.8277
H132.19502.19503.46183.46181.08652.54462.54463.82243.82244.34534.34531.8277

picture of Bicyclo[2.1.0]pentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 90.708 C1 C2 C5 59.437
C1 C2 H7 128.958 C1 C3 C4 89.292
C1 C3 H8 115.758 C1 C3 H10 113.052
C1 C5 C2 61.126 C1 C5 H12 120.247
C1 C5 H13 115.449 C2 C1 C3 90.708
C2 C1 C5 59.437 C2 C1 H6 128.958
C2 C4 C3 89.292 C2 C4 H9 115.758
C2 C4 H11 113.052 C2 C5 H12 120.247
C2 C5 H13 115.449 C3 C1 C5 109.798
C3 C1 H6 125.625 C3 C4 H9 117.052
C3 C4 H11 111.997 C4 C2 C5 109.798
C4 C2 H7 125.625 C4 C3 H8 117.052
C4 C3 H10 111.997 C5 C1 H6 121.705
C5 C2 H7 121.705 H8 C3 H10 108.740
H9 C4 H11 108.740 H12 C5 H13 114.260
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability