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

using model chemistry: CCD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-193.334820
Energy at 298.15K-193.344007
HF Energy-192.837271
Nuclear repulsion energy173.316949
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 CCD/3-21G
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' 3237 3147 16.86      
2 A' 3213 3124 3.89      
3 A' 3136 3049 38.91      
4 A' 3129 3042 10.85      
5 A' 3076 2991 33.60      
6 A' 1569 1525 1.55      
7 A' 1542 1499 3.29      
8 A' 1363 1325 0.12      
9 A' 1261 1226 3.08      
10 A' 1223 1189 0.48      
11 A' 1124 1092 2.30      
12 A' 1046 1017 0.35      
13 A' 980 953 8.16      
14 A' 958 932 0.92      
15 A' 881 856 1.60      
16 A' 787 765 1.60      
17 A' 747 727 6.58      
18 A' 432 420 0.79      
19 A" 3219 3130 11.63      
20 A" 3117 3031 0.03      
21 A" 3066 2981 32.03      
22 A" 1549 1506 0.59      
23 A" 1313 1276 6.66      
24 A" 1305 1269 2.81      
25 A" 1254 1219 0.23      
26 A" 1164 1132 3.14      
27 A" 1138 1106 4.37      
28 A" 1110 1079 1.16      
29 A" 991 964 3.09      
30 A" 940 914 0.63      
31 A" 774 753 13.23      
32 A" 707 688 0.24      
33 A" 263 255 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 25806.7 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 25091.8 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 CCD/3-21G
ABC
0.29198 0.19903 0.15524

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.255 -0.557 0.784
C2 -0.255 -0.557 -0.784
C3 -0.255 1.004 0.801
C4 -0.255 1.004 -0.801
C5 0.971 -1.037 0.000
H6 -0.793 -1.195 1.475
H7 -0.793 -1.195 -1.475
H8 0.612 1.467 1.289
H9 0.612 1.467 -1.289
H10 -1.183 1.428 1.202
H11 -1.183 1.428 -1.202
H12 1.879 -0.433 0.000
H13 1.137 -2.113 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.56831.56162.22531.53261.08302.40832.25903.02422.23062.95742.27642.2298
C21.56832.22531.56161.53262.40831.08303.02422.25902.95742.23062.27642.2298
C31.56162.22531.60252.51232.36203.21041.09692.30951.09602.24822.69443.5065
C42.22531.56161.60252.51233.21042.36202.30951.09692.24821.09602.69443.5065
C51.53261.53262.51232.51232.30502.30502.83872.83873.48713.48711.08941.0888
H61.08302.40832.36203.21042.30502.95023.01524.08612.66523.76793.14502.5965
H72.40831.08303.21042.36202.30502.95024.08613.01523.76792.66523.14502.5965
H82.25903.02421.09692.30952.83873.01524.08612.57771.79753.07062.62223.8407
H93.02422.25902.30951.09692.83874.08613.01522.57773.07061.79752.62223.8407
H102.23062.95741.09602.24823.48712.66523.76791.79753.07062.40443.77904.4002
H112.95742.23062.24821.09603.48713.76792.66523.07061.79752.40443.77904.4002
H122.27642.27642.69442.69441.08943.14503.14502.62222.62223.77903.77901.8361
H132.22982.22983.50653.50651.08882.59652.59653.84073.84074.40024.40021.8361

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 90.626 C1 C2 C5 59.225
C1 C2 H7 129.642 C1 C3 C4 89.374
C1 C3 H8 115.248 C1 C3 H10 112.964
C1 C5 C2 61.550 C1 C5 H12 119.535
C1 C5 H13 115.516 C2 C1 C3 90.626
C2 C1 C5 59.225 C2 C1 H6 129.642
C2 C4 C3 89.374 C2 C4 H9 115.248
C2 C4 H11 112.964 C2 C5 H12 119.535
C2 C5 H13 115.516 C3 C1 C5 108.567
C3 C1 H6 125.564 C3 C4 H9 116.395
C3 C4 H11 111.458 C4 C2 C5 108.567
C4 C2 H7 125.564 C4 C3 H8 116.395
C4 C3 H10 111.458 C5 C1 H6 122.656
C5 C2 H7 122.656 H8 C3 H10 110.103
H9 C4 H11 110.103 H12 C5 H13 114.898
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability