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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: CCD/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 CCD/aug-cc-pVDZ
 hartrees
Energy at 0K-156.748063
Energy at 298.15K-156.756655
HF Energy-156.110873
Nuclear repulsion energy123.315539
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/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 3134 26.54      
2 A' 3171 3059 15.53      
3 A' 3155 3043 12.08      
4 A' 3110 3000 24.41      
5 A' 3034 2927 32.47      
6 A' 1525 1471 1.28      
7 A' 1497 1444 6.60      
8 A' 1433 1382 2.63      
9 A' 1391 1341 2.39      
10 A' 1236 1192 0.07      
11 A' 1214 1171 0.14      
12 A' 1052 1015 3.99      
13 A' 1005 970 10.41      
14 A' 938 905 1.65      
15 A' 797 768 6.20      
16 A' 769 742 1.43      
17 A' 362 349 0.19      
18 A" 3236 3121 0.24      
19 A" 3147 3035 21.52      
20 A" 3111 3001 30.45      
21 A" 1485 1433 1.61      
22 A" 1467 1415 1.67      
23 A" 1193 1151 0.59      
24 A" 1142 1101 0.05      
25 A" 1108 1069 2.92      
26 A" 1067 1029 0.77      
27 A" 883 851 9.85      
28 A" 814 785 3.71      
29 A" 342 330 0.44      
30 A" 225 217 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24078.9 cm-1
Scaled (by 0.9645) Zero Point Vibrational Energy (zpe) 23224.1 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/aug-cc-pVDZ
ABC
0.51100 0.20936 0.18385

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.352 0.411 0.000
C2 -0.894 1.281 0.000
H3 1.301 0.958 0.000
C4 0.352 -0.902 0.763
C5 0.352 -0.902 -0.763
H6 1.268 -1.209 1.274
H7 1.268 -1.209 -1.274
H8 -0.574 -1.190 1.269
H9 -0.574 -1.190 -1.269
H10 -1.802 0.652 0.000
H11 -0.930 1.928 0.894
H12 -0.930 1.928 -0.894

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.51951.09551.51811.51812.25502.25502.24272.24272.16772.17792.1779
C21.51952.21922.62622.62623.53463.53462.79552.79551.10441.10421.1042
H31.09552.21922.22262.22262.51342.51343.12063.12063.11872.59232.5923
C41.51812.62622.22261.52501.09292.25381.09402.25092.76353.10903.5204
C51.51812.62622.22261.52502.25381.09292.25091.09402.76353.52043.1090
H62.25503.53462.51341.09292.25382.54751.84203.13963.80943.84864.4009
H72.25503.53462.51342.25381.09292.54753.13961.84203.80944.40093.8486
H82.24272.79553.12061.09402.25091.84203.13962.53752.55173.15993.8108
H92.24272.79553.12062.25091.09403.13961.84202.53752.55173.81083.1599
H102.16771.10443.11872.76352.76353.80943.80942.55172.55171.78511.7851
H112.17791.10422.59233.10903.52043.84864.40093.15993.81081.78511.7882
H122.17791.10422.59233.52043.10904.40093.84863.81083.15991.78511.7882

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.407 C1 C2 H11 111.226
C1 C2 H12 111.226 C1 C4 H5 59.850
C1 C4 H6 118.553 C1 C4 H8 117.392
C1 H5 C4 59.850 C1 H5 H7 118.553
C1 H5 H9 117.392 C2 C1 C3 115.161
C2 C1 C4 119.662 C2 C1 H5 119.662
C3 C1 C4 115.557 C3 C1 H5 115.557
C4 C1 H5 60.300 C4 H5 H7 117.893
C4 H5 H9 117.565 H5 C4 H6 117.893
H5 C4 H8 117.565 H6 C4 H8 114.763
H7 H5 H9 114.763 H10 C2 H11 107.851
H10 C2 H12 107.851 H11 C2 H12 108.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability