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

using model chemistry: MP2=FULL/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-155.667671
Energy at 298.15K 
HF Energy-154.923976
Nuclear repulsion energy108.702016
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/aug-cc-pVTZ
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' 3307 3146 0.92 124.73 0.26 0.41
2 A' 3164 3010 10.51 71.92 0.71 0.83
3 A' 3104 2953 60.54 158.38 0.11 0.19
4 A' 3076 2926 19.33 229.77 0.01 0.02
5 A' 1851 1762 11.91 44.25 0.09 0.17
6 A' 1544 1469 3.83 7.83 0.37 0.54
7 A' 1510 1436 9.85 9.03 0.51 0.67
8 A' 1413 1345 0.20 3.44 0.59 0.74
9 A' 1210 1151 3.73 9.06 0.32 0.48
10 A' 1095 1042 1.17 4.60 0.06 0.11
11 A' 1058 1006 30.95 4.71 0.22 0.36
12 A' 998 949 7.40 8.52 0.11 0.20
13 A' 956 909 14.78 3.64 0.41 0.58
14 A' 685 652 0.53 12.79 0.58 0.74
15 A' 324 308 1.66 1.61 0.75 0.86
16 A" 3164 3011 31.86 97.37 0.75 0.86
17 A" 3142 2989 9.70 71.14 0.75 0.86
18 A" 1509 1435 8.58 5.05 0.75 0.86
19 A" 1128 1073 1.26 0.41 0.75 0.86
20 A" 1059 1008 0.07 1.21 0.75 0.86
21 A" 1006 957 2.51 0.65 0.75 0.86
22 A" 743 707 31.78 0.96 0.75 0.86
23 A" 284 270 12.40 0.21 0.75 0.86
24 A" 166 158 0.39 0.20 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18747.7 cm-1
Scaled (by 0.9514) Zero Point Vibrational Energy (zpe) 17836.6 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/aug-cc-pVTZ
ABC
0.69358 0.21443 0.17473

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.179 0.000
C2 -0.038 -1.321 0.000
C3 1.157 -0.402 0.000
C4 -0.848 1.377 0.000
H5 -0.304 -1.844 0.911
H6 -0.304 -1.844 -0.911
H7 2.226 -0.354 0.000
H8 -0.252 2.285 0.000
H9 -1.494 1.379 -0.876
H10 -1.494 1.379 0.876

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.50101.29471.46752.23982.23982.28932.12062.10682.1068
C21.50101.50712.81701.08351.08352.46233.61243.19033.1903
C31.29471.50712.68062.24532.24531.07073.03423.31163.3116
C41.46752.81702.68063.39133.39133.52821.08641.08841.0884
H52.23981.08352.24533.39131.82193.07454.22873.87293.4360
H62.23981.08352.24533.39131.82193.07454.22873.43603.8729
H72.28932.46231.07073.52823.07453.07453.62014.19644.1964
H82.12063.61243.03421.08644.22874.22873.62011.76931.7693
H92.10683.19033.31161.08843.87293.43604.19641.76931.7527
H102.10683.19033.31161.08843.43603.87294.19641.76931.7527

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 50.988 H1 C2 C6 119.261
C2 C3 C6 24.899 C2 C3 C10 72.149
C2 C6 C3 35.844 C2 C6 H4 49.840
C2 C6 H5 32.785 C3 C2 C6 119.257
C3 C6 H4 52.092 C3 C6 H5 66.065
C3 C10 H7 9.277 C3 C10 H8 65.333
C3 C10 H9 74.655 H4 C6 H5 74.418
C6 C3 C10 86.111 H7 C10 H8 59.058
H7 C10 H9 77.946 H8 C10 H9 60.310
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability