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All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: MP2=FULL/6-31G

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/6-31G
 hartrees
Energy at 0K-156.397399
Energy at 298.15K-156.406100
HF Energy-156.027006
Nuclear repulsion energy122.981567
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/6-31G
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' 3272 3109 31.08      
2 A' 3187 3028 14.16      
3 A' 3177 3018 15.17      
4 A' 3126 2970 25.28      
5 A' 3047 2895 31.02      
6 A' 1578 1499 5.31      
7 A' 1570 1492 2.39      
8 A' 1487 1412 3.74      
9 A' 1457 1384 1.52      
10 A' 1268 1205 0.05      
11 A' 1257 1194 0.03      
12 A' 1153 1096 15.41      
13 A' 1027 976 3.26      
14 A' 979 930 5.99      
15 A' 834 793 1.43      
16 A' 784 745 7.01      
17 A' 380 361 0.17      
18 A" 3256 3093 0.26      
19 A" 3170 3012 19.24      
20 A" 3132 2976 33.20      
21 A" 1567 1489 1.56      
22 A" 1549 1472 2.49      
23 A" 1254 1191 0.40      
24 A" 1224 1163 0.30      
25 A" 1168 1110 7.31      
26 A" 1155 1098 0.02      
27 A" 888 843 0.00      
28 A" 869 825 14.95      
29 A" 355 337 0.85      
30 A" 223 211 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24694.8 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 23462.5 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/6-31G
ABC
0.51108 0.20693 0.18132

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.348 0.408 0.000
C2 -0.885 1.302 0.000
H3 1.293 0.953 0.000
C4 0.348 -0.913 0.765
C5 0.348 -0.913 -0.765
H6 1.254 -1.219 1.284
H7 1.254 -1.219 -1.284
H8 -0.569 -1.201 1.275
H9 -0.569 -1.201 -1.275
H10 -1.800 0.690 0.000
H11 -0.909 1.946 0.891
H12 -0.909 1.946 -0.891

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.52331.09061.52681.52682.26202.26202.24922.24922.16692.17652.1765
C21.52332.20652.64832.64833.54683.54682.82702.82701.10071.09971.0997
H31.09062.20652.22692.22692.52302.52303.12003.12003.10472.57452.5745
C41.52682.64832.22691.52981.08782.26091.08892.25562.78773.12523.5348
C51.52682.64832.22691.52982.26091.08782.25561.08892.78773.53483.1252
H62.26203.54682.52301.08782.26092.56801.82343.14253.82373.85274.4070
H72.26203.54682.52302.26091.08782.56803.14251.82343.82374.40703.8527
H82.24922.82703.12001.08892.25561.82343.14252.55092.59203.18803.8355
H92.24922.82703.12002.25561.08893.14251.82342.55092.59203.83553.1880
H102.16691.10073.10472.78772.78773.82373.82372.59202.59201.77941.7794
H112.17651.09972.57453.12523.53483.85274.40703.18803.83551.77941.7829
H122.17651.09972.57453.53483.12524.40703.85273.83553.18801.77941.7829

picture of methylcyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H10 110.303 C1 C2 H11 111.121
C1 C2 H12 111.121 C1 C4 H5 59.936
C1 C4 H6 118.841 C1 C4 H8 117.632
C1 H5 C4 59.936 C1 H5 H7 118.841
C1 H5 H9 117.632 C2 C1 C3 114.138
C2 C1 C4 120.514 C2 C1 H5 120.514
C3 C1 C4 115.592 C3 C1 H5 115.592
C4 C1 H5 60.128 C4 H5 H7 118.505
C4 H5 H9 117.963 H5 C4 H6 118.505
H5 C4 H8 117.963 H6 C4 H8 113.799
H7 H5 H9 113.799 H10 C2 H11 107.931
H10 C2 H12 107.931 H11 C2 H12 108.313
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability