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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: MP2=FULL/6-311G*

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/6-311G*
 hartrees
Energy at 0K-156.749352
Energy at 298.15K-156.757999
HF Energy-156.121487
Nuclear repulsion energy124.315439
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/6-311G*
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' 3280 3106 21.91      
2 A' 3195 3026 17.86      
3 A' 3179 3011 10.72      
4 A' 3156 2989 17.10      
5 A' 3069 2907 29.90      
6 A' 1552 1469 0.99      
7 A' 1540 1459 12.52      
8 A' 1462 1384 5.71      
9 A' 1426 1350 1.16      
10 A' 1262 1195 0.06      
11 A' 1238 1173 0.06      
12 A' 1075 1018 11.72      
13 A' 1028 973 12.23      
14 A' 963 912 2.98      
15 A' 818 774 5.33      
16 A' 791 749 2.77      
17 A' 370 351 0.20      
18 A" 3266 3093 0.20      
19 A" 3174 3006 18.08      
20 A" 3156 2989 26.41      
21 A" 1531 1450 3.07      
22 A" 1501 1421 5.19      
23 A" 1220 1156 0.95      
24 A" 1167 1105 0.01      
25 A" 1136 1076 4.98      
26 A" 1079 1022 2.40      
27 A" 900 853 8.48      
28 A" 844 799 5.63      
29 A" 348 330 0.84      
30 A" 226 214 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24473.6 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 23178.9 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/6-311G*
ABC
0.52077 0.21229 0.18645

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.348 0.406 0.000
C2 -0.883 1.276 0.000
H3 1.293 0.943 0.000
C4 0.348 -0.897 0.755
C5 0.348 -0.897 -0.755
H6 1.255 -1.200 1.265
H7 1.255 -1.200 -1.265
H8 -0.571 -1.183 1.257
H9 -0.571 -1.183 -1.257
H10 -1.787 0.661 0.000
H11 -0.916 1.917 0.886
H12 -0.916 1.917 -0.886

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.50741.08701.50601.50602.23642.23642.22432.22432.14992.15972.1597
C21.50742.20132.60932.60933.50763.50762.77942.77941.09371.09371.0937
H31.08702.20132.20192.20192.48832.48833.09363.09363.09282.57122.5712
C41.50602.60932.20191.51091.08372.23511.08472.23072.74843.08763.4941
C51.50602.60932.20191.51092.23511.08372.23071.08472.74843.49413.0876
H62.23643.50762.48831.08372.23512.52901.82583.11343.78363.81754.3649
H72.23643.50762.48832.23511.08372.52903.11341.82583.78364.36493.8175
H82.22432.77943.09361.08472.23071.82583.11342.51482.54133.14123.7843
H92.22432.77943.09362.23071.08473.11341.82582.51482.54133.78433.1412
H102.14991.09373.09282.74842.74843.78363.78362.54132.54131.76731.7673
H112.15971.09372.57123.08763.49413.81754.36493.14123.78431.76731.7712
H122.15971.09372.57123.49413.08764.36493.81753.78433.14121.76731.7712

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.472 C1 C2 H11 111.263
C1 C2 H12 111.263 C1 C4 H5 59.893
C1 C4 H6 118.523 C1 C4 H8 117.382
C1 H5 C4 59.893 C1 H5 H7 118.523
C1 H5 H9 117.382 C2 C1 C3 115.134
C2 C1 C4 119.968 C2 C1 H5 119.968
C3 C1 C4 115.294 C3 C1 H5 115.294
C4 C1 H5 60.214 C4 H5 H7 118.017
C4 H5 H9 117.565 H5 C4 H6 118.017
H5 C4 H8 117.565 H6 C4 H8 114.697
H7 H5 H9 114.697 H10 C2 H11 107.784
H10 C2 H12 107.784 H11 C2 H12 108.130
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability