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

using model chemistry: MP2=FULL/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-155.435114
Energy at 298.15K 
HF Energy-154.877950
Nuclear repulsion energy107.330238
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/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' 3321 3156 0.31 125.63 0.29 0.45
2 A' 3197 3038 11.84 83.96 0.74 0.85
3 A' 3100 2946 59.84 146.22 0.13 0.23
4 A' 3084 2931 23.30 173.71 0.01 0.01
5 A' 1843 1751 8.56 25.90 0.20 0.33
6 A' 1522 1447 6.36 14.05 0.42 0.59
7 A' 1481 1408 8.50 17.22 0.68 0.81
8 A' 1401 1331 0.28 7.45 0.66 0.80
9 A' 1212 1152 1.87 6.36 0.42 0.59
10 A' 1091 1036 8.49 3.65 0.20 0.33
11 A' 1062 1010 25.22 0.23 0.50 0.66
12 A' 992 943 6.11 7.53 0.35 0.52
13 A' 942 896 12.45 6.55 0.55 0.71
14 A' 684 650 0.53 15.14 0.61 0.76
15 A' 319 303 1.50 1.56 0.74 0.85
16 A" 3183 3025 39.30 95.44 0.75 0.86
17 A" 3174 3017 16.79 87.66 0.75 0.86
18 A" 1478 1404 8.06 13.15 0.75 0.86
19 A" 1116 1060 0.95 2.57 0.75 0.86
20 A" 1042 990 0.28 3.47 0.75 0.86
21 A" 993 944 2.64 7.30 0.75 0.86
22 A" 712 676 25.59 0.72 0.75 0.86
23 A" 289 275 10.88 0.94 0.75 0.86
24 A" 159 152 0.48 0.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18697.7 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 17770.3 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/cc-pVDZ
ABC
0.67875 0.20886 0.17037

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.183 0.000
C2 -0.071 -1.335 0.000
C3 1.159 -0.441 0.000
C4 -0.821 1.417 0.000
H5 -0.356 -1.863 0.923
H6 -0.356 -1.863 -0.923
H7 2.247 -0.414 0.000
H8 -0.189 2.318 0.000
H9 -1.475 1.441 -0.887
H10 -1.475 1.441 0.887

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51901.31661.48242.27192.27192.32432.14362.13182.1318
C21.51901.52042.85211.10061.10062.49383.65453.23433.2343
C31.31661.52042.71572.27322.27321.08763.07113.35673.3567
C41.48242.85212.71573.43853.43853.57231.10041.10231.1023
H52.27191.10062.27323.43851.84543.11844.28443.92923.4877
H62.27191.10062.27323.43851.84543.11844.28443.48773.9292
H72.32432.49381.08763.57233.11843.11843.65974.25144.2514
H82.14363.65453.07111.10044.28444.28443.65971.79161.7916
H92.13183.23433.35671.10233.92923.48774.25141.79161.7742
H102.13183.23433.35671.10233.48773.92924.25141.79161.7742

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 51.339 H1 C2 C6 119.420
C2 C3 C6 24.939 C2 C3 C10 72.208
C2 C6 C3 35.623 C2 C6 H4 49.654
C2 C6 H5 33.034 C3 C2 C6 119.437
C3 C6 H4 52.042 C3 C6 H5 66.053
C3 C10 H7 9.391 C3 C10 H8 65.197
C3 C10 H9 74.676 H4 C6 H5 74.434
C6 C3 C10 86.254 H7 C10 H8 58.805
H7 C10 H9 77.956 H8 C10 H9 60.320
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability