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All results from a given calculation for C4H6 (1-Methylcyclopropene)

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 C1 1A
Energy calculated at MP2=FULL/6-31G
 hartrees
Energy at 0K-155.162836
Energy at 298.15K 
HF Energy-154.792266
Nuclear repulsion energy106.661459
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' 3317 3152 0.37 110.72 0.28 0.43
2 A' 3141 2985 20.57 76.40 0.74 0.85
3 A' 3120 2964 46.40 117.18 0.14 0.24
4 A' 3050 2898 25.39 141.21 0.00 0.01
5 A' 1811 1721 7.92 12.05 0.17 0.30
6 A' 1595 1516 6.69 16.12 0.42 0.60
7 A' 1564 1486 7.77 25.59 0.72 0.84
8 A' 1485 1411 0.32 12.89 0.63 0.77
9 A' 1220 1159 5.36 1.97 0.28 0.44
10 A' 1139 1083 11.17 0.97 0.21 0.35
11 A' 1109 1054 35.87 1.39 0.39 0.56
12 A' 988 939 0.27 7.91 0.55 0.71
13 A' 955 907 9.67 12.62 0.37 0.54
14 A' 646 613 0.16 15.21 0.63 0.77
15 A' 339 322 1.40 1.91 0.71 0.83
16 A" 3200 3040 54.19 80.14 0.75 0.86
17 A" 3123 2967 18.62 75.90 0.75 0.86
18 A" 1552 1474 7.73 21.98 0.75 0.86
19 A" 1155 1098 0.60 2.29 0.75 0.86
20 A" 1083 1029 0.70 2.94 0.75 0.86
21 A" 1024 973 1.80 17.13 0.75 0.86
22 A" 660 627 39.73 0.98 0.75 0.86
23 A" 272 259 13.63 1.24 0.75 0.86
24 A" 136 129 0.60 0.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18842.2 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 17901.9 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/6-31G
ABC
0.66769 0.20606 0.16773

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 0.000 0.181 0.000
C2 -0.134 -1.357 0.000
C3 1.143 -0.483 0.000
C4 -0.755 1.464 0.000
H5 -0.434 -1.870 0.916
H6 -0.434 -1.870 -0.916
H7 2.223 -0.482 0.000
H8 -0.068 2.322 0.000
H9 -1.402 1.537 -0.887
H10 -1.402 1.537 0.887

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.54371.32161.48952.28792.28792.31942.14222.14302.1430
C21.54371.54782.88911.09201.09202.51453.67963.28183.2818
C31.32161.54782.71952.29152.29151.08003.05513.36813.3681
C41.48952.88912.71953.47323.47323.55761.09871.10021.1002
H52.28791.09202.29153.47321.83243.13484.30663.97463.5422
H62.28791.09202.29153.47321.83243.13484.30663.54223.9746
H72.31942.51451.08003.55763.13483.13483.62054.24294.2429
H82.14223.67963.05511.09874.30664.30663.62051.78391.7839
H92.14303.28183.36811.10023.97463.54224.24291.78391.7738
H102.14303.28183.36811.10023.54223.97464.24291.78391.7738

picture of 1-Methylcyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C3 50.616 H1 C2 C6 119.472
C2 C3 C6 24.514 C2 C3 C10 73.449
C2 C6 C3 36.020 C2 C6 H4 49.679
C2 C6 H5 32.969 C3 C2 C6 119.466
C3 C6 H4 51.456 C3 C6 H5 66.433
C3 C10 H7 9.610 C3 C10 H8 64.397
C3 C10 H9 74.733 H4 C6 H5 74.705
C6 C3 C10 87.037 H7 C10 H8 57.756
H7 C10 H9 77.935 H8 C10 H9 60.187
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability