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

using model chemistry: B2PLYP=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B2PLYP=FULL/6-311G*
 hartrees
Energy at 0K-155.806640
Energy at 298.15K 
HF Energy-155.604660
Nuclear repulsion energy108.148625
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 B2PLYP=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' 3286 3286 0.37 122.82 0.32 0.48
2 A' 3137 3137 22.12 90.51 0.73 0.84
3 A' 3055 3055 71.41 204.03 0.09 0.17
4 A' 3053 3053 40.67 126.47 0.04 0.08
5 A' 1854 1854 12.12 44.72 0.20 0.34
6 A' 1550 1550 6.47 13.93 0.36 0.52
7 A' 1517 1517 10.12 17.39 0.65 0.78
8 A' 1435 1435 0.19 9.02 0.68 0.81
9 A' 1207 1207 2.33 5.53 0.42 0.60
10 A' 1095 1095 4.68 2.93 0.21 0.34
11 A' 1070 1070 40.71 0.30 0.21 0.35
12 A' 987 987 4.55 8.83 0.40 0.58
13 A' 946 946 16.37 6.62 0.50 0.66
14 A' 678 678 0.52 14.34 0.61 0.76
15 A' 323 323 1.80 1.49 0.74 0.85
16 A" 3120 3120 54.65 104.81 0.75 0.86
17 A" 3110 3110 29.31 92.13 0.75 0.86
18 A" 1510 1510 9.46 12.42 0.75 0.86
19 A" 1136 1136 0.92 1.76 0.75 0.86
20 A" 1062 1062 0.41 2.99 0.75 0.86
21 A" 1002 1002 2.25 7.28 0.75 0.86
22 A" 707 707 33.28 0.94 0.75 0.86
23 A" 292 292 13.43 0.98 0.75 0.86
24 A" 158 158 0.41 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18644.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18644.9 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 B2PLYP=FULL/6-311G*
ABC
0.68947 0.21166 0.17267

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.179 0.000
C2 -0.046 -1.332 0.000
C3 1.154 -0.413 0.000
C4 -0.838 1.394 0.000
H5 -0.320 -1.864 0.912
H6 -0.320 -1.864 -0.912
H7 2.230 -0.362 0.000
H8 -0.231 2.300 0.000
H9 -1.490 1.411 -0.878
H10 -1.490 1.411 0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.51091.29691.47672.25942.25942.29462.13432.12322.1232
C21.51091.51102.83881.09101.09102.47333.63683.22133.2213
C31.29691.51102.69002.26042.26041.07713.04643.32963.3296
C41.47672.83882.69003.42253.42253.53561.09111.09331.0933
H52.25941.09102.26043.42251.82443.09654.26363.91073.4770
H62.25941.09102.26043.42251.82443.09654.26363.47703.9107
H72.29462.47331.07713.53563.09653.09653.62584.21314.2131
H82.13433.63683.04641.09114.26364.26363.62581.77401.7740
H92.12323.22133.32961.09333.91073.47704.21311.77401.7561
H102.12323.22133.32961.09333.47703.91074.21311.77401.7561

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 50.829 H1 C2 C6 119.662
C2 C3 C6 24.777 C2 C3 C10 72.698
C2 C6 C3 35.477 C2 C6 H4 49.551
C2 C6 H5 33.272 C3 C2 C6 119.746
C3 C6 H4 51.713 C3 C6 H5 66.199
C3 C10 H7 9.434 C3 C10 H8 65.214
C3 C10 H9 74.709 H4 C6 H5 74.542
C6 C3 C10 86.565 H7 C10 H8 58.766
H7 C10 H9 77.971 H8 C10 H9 60.332
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability