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All results from a given calculation for C5H8 (Bicyclo[2.1.0]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 CS 1A'
Energy calculated at MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-194.664759
Energy at 298.15K-194.673877
HF Energy-193.945295
Nuclear repulsion energy174.997914
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 A' 3250 3117 16.82      
2 A' 3227 3095 7.14      
3 A' 3162 3033 41.34      
4 A' 3132 3003 19.20      
5 A' 3082 2955 60.46      
6 A' 1497 1436 1.02      
7 A' 1475 1415 2.31      
8 A' 1361 1305 1.09      
9 A' 1231 1181 1.00      
10 A' 1205 1156 0.02      
11 A' 1125 1079 0.78      
12 A' 1026 984 0.77      
13 A' 987 947 3.16      
14 A' 942 903 5.43      
15 A' 892 856 2.00      
16 A' 780 748 0.46      
17 A' 766 734 9.37      
18 A' 409 392 0.36      
19 A" 3218 3086 16.87      
20 A" 3144 3016 0.23      
21 A" 3073 2947 45.26      
22 A" 1469 1408 0.49      
23 A" 1296 1243 5.44      
24 A" 1241 1190 1.53      
25 A" 1216 1166 0.07      
26 A" 1107 1062 0.17      
27 A" 1052 1009 2.89      
28 A" 1036 993 0.34      
29 A" 994 954 4.66      
30 A" 928 890 0.32      
31 A" 802 769 14.88      
32 A" 664 637 0.13      
33 A" 252 241 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 25520.1 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 24473.8 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
0.30006 0.20275 0.15849

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.249 -0.544 0.775
C2 -0.249 -0.544 -0.775
C3 -0.249 0.994 0.785
C4 -0.249 0.994 -0.785
C5 0.954 -1.036 0.000
H6 -0.793 -1.196 1.461
H7 -0.793 -1.196 -1.461
H8 0.613 1.464 1.287
H9 0.613 1.464 -1.287
H10 -1.178 1.421 1.188
H11 -1.178 1.421 -1.188
H12 1.877 -0.444 0.000
H13 1.095 -2.120 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54951.53762.19051.51321.09212.39182.24433.00412.21282.92892.26462.2114
C21.54952.19051.53761.51322.39181.09213.00412.24432.92892.21282.26462.2114
C31.53762.19051.57102.48672.35563.18431.10262.29321.09932.22302.68353.4809
C42.19051.53761.57102.48673.18432.35562.29321.10262.22301.09932.68353.4809
C51.51321.51322.48672.48672.28292.28292.83222.83223.46363.46361.09631.0928
H61.09212.39182.35563.18432.28292.92243.01414.07502.66013.74453.13472.5596
H72.39181.09213.18432.35562.28292.92244.07503.01413.74452.66013.13472.5596
H82.24433.00411.10262.29322.83223.01414.07502.57351.79473.05562.62503.8379
H93.00412.24432.29321.10262.83224.07503.01412.57353.05561.79472.62503.8379
H102.21282.92891.09932.22303.46362.66013.74451.79473.05562.37643.77124.3725
H112.92892.21282.22301.09933.46363.74452.66013.05561.79472.37643.77124.3725
H122.26462.26462.68352.68351.09633.13473.13472.62502.62503.77123.77121.8491
H132.21142.21143.48093.48091.09282.55962.55963.83793.83794.37254.37251.8491

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 90.400 C1 C2 C5 59.202
C1 C2 H7 128.944 C1 C3 C4 89.600
C1 C3 H8 115.445 C1 C3 H10 113.050
C1 C5 C2 61.595 C1 C5 H12 119.561
C1 C5 H13 115.166 C2 C1 C3 90.400
C2 C1 C5 59.202 C2 C1 H6 128.944
C2 C4 C3 89.600 C2 C4 H9 115.445
C2 C4 H11 113.050 C2 C5 H12 119.561
C2 C5 H13 115.166 C3 C1 C5 109.194
C3 C1 H6 126.387 C3 C4 H9 117.040
C3 C4 H11 111.489 C4 C2 C5 109.194
C4 C2 H7 126.387 C4 C3 H8 117.040
C4 C3 H10 111.489 C5 C1 H6 121.548
C5 C2 H7 121.548 H8 C3 H10 109.179
H9 C4 H11 109.179 H12 C5 H13 115.273
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability