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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: B2PLYP=FULL/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/STO-3G
 hartrees
Energy at 0K-155.031304
Energy at 298.15K-155.039776
HF Energy-154.958753
Nuclear repulsion energy122.530275
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 B2PLYP=FULL/STO-3G
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' 3591 3591 0.01      
2 A' 3526 3526 1.63      
3 A' 3485 3485 1.35      
4 A' 3441 3441 0.95      
5 A' 3348 3348 3.50      
6 A' 1715 1715 2.24      
7 A' 1673 1673 0.71      
8 A' 1607 1607 1.56      
9 A' 1542 1542 4.99      
10 A' 1341 1341 0.75      
11 A' 1314 1314 0.79      
12 A' 1249 1249 0.46      
13 A' 1100 1100 1.56      
14 A' 1033 1033 3.52      
15 A' 876 876 2.29      
16 A' 852 852 0.09      
17 A' 380 380 0.16      
18 A" 3586 3586 0.00      
19 A" 3515 3515 1.86      
20 A" 3432 3432 1.64      
21 A" 1708 1708 1.36      
22 A" 1627 1627 0.04      
23 A" 1316 1316 0.08      
24 A" 1290 1290 1.30      
25 A" 1234 1234 0.07      
26 A" 1216 1216 5.12      
27 A" 1000 1000 1.17      
28 A" 900 900 2.18      
29 A" 360 360 0.40      
30 A" 196 196 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 26726.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26726.2 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 B2PLYP=FULL/STO-3G
ABC
0.50941 0.20452 0.17999

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.352 0.409 0.000
C2 -0.899 1.306 0.000
H3 1.302 0.960 0.000
C4 0.352 -0.916 0.763
C5 0.352 -0.916 -0.763
H6 1.268 -1.216 1.282
H7 1.268 -1.216 -1.282
H8 -0.570 -1.213 1.272
H9 -0.570 -1.213 -1.272
H10 -1.813 0.695 0.000
H11 -0.914 1.952 0.892
H12 -0.914 1.952 -0.892

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.53951.09771.52961.52962.26332.26332.25872.25872.18422.18632.1863
C21.53952.22792.66242.66243.56393.56392.84172.84171.09991.10111.1011
H31.09772.22792.23692.23692.52512.52513.13773.13773.12632.58672.5867
C41.52962.66242.23691.52681.09452.26101.09462.25452.80503.13833.5456
C51.52962.66242.23691.52682.26101.09452.25451.09462.80503.54563.1383
H62.26333.56392.52511.09452.26102.56361.83883.14703.84583.86684.4186
H72.26333.56392.52512.26101.09452.56363.14701.83883.84584.41863.8668
H82.25872.84173.13771.09462.25451.83883.14702.54422.60863.20683.8498
H92.25872.84173.13772.25451.09463.14701.83882.54422.60863.84983.2068
H102.18421.09993.12632.80502.80503.84583.84582.60862.60861.78441.7844
H112.18631.10112.58673.13833.54563.86684.41863.20683.84981.78441.7834
H122.18631.10112.58673.54563.13834.41863.86683.84983.20681.78441.7834

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.581 C1 C2 H11 110.679
C1 C2 H12 110.679 C1 C4 H5 60.059
C1 C4 H6 118.261 C1 C4 H8 117.845
C1 H5 C4 60.059 C1 H5 H7 118.261
C1 H5 H9 117.845 C2 C1 C3 114.254
C2 C1 C4 120.335 C2 C1 H5 120.335
C3 C1 C4 115.755 C3 C1 H5 115.755
C4 C1 H5 59.881 C4 H5 H7 118.273
C4 H5 H9 117.693 H5 C4 H6 118.273
H5 C4 H8 117.693 H6 C4 H8 114.280
H7 H5 H9 114.280 H10 C2 H11 108.329
H10 C2 H12 108.329 H11 C2 H12 108.154
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability