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

using model chemistry: MP2/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-155.447576
Energy at 298.15K 
HF Energy-154.882214
Nuclear repulsion energy107.138357
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/aug-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' 3307 3172 0.30 133.46 0.27 0.43
2 A' 3163 3034 13.71 73.99 0.73 0.84
3 A' 3084 2958 65.79 158.18 0.11 0.21
4 A' 3058 2933 23.34 238.08 0.01 0.02
5 A' 1819 1744 11.55 41.80 0.09 0.17
6 A' 1514 1452 4.94 7.88 0.40 0.57
7 A' 1473 1413 8.96 9.44 0.51 0.68
8 A' 1387 1330 0.03 3.29 0.64 0.78
9 A' 1189 1141 3.39 9.63 0.32 0.49
10 A' 1071 1028 2.39 7.28 0.07 0.13
11 A' 1041 998 28.58 3.06 0.26 0.41
12 A' 982 942 6.95 9.62 0.11 0.19
13 A' 932 894 12.75 4.34 0.37 0.54
14 A' 667 640 0.56 14.24 0.59 0.74
15 A' 317 304 1.57 1.70 0.75 0.86
16 A" 3167 3037 37.67 105.01 0.75 0.86
17 A" 3141 3013 12.39 73.82 0.75 0.86
18 A" 1469 1409 7.82 5.35 0.75 0.86
19 A" 1101 1056 1.41 0.41 0.75 0.86
20 A" 1031 989 0.01 1.15 0.75 0.86
21 A" 985 945 2.07 0.84 0.75 0.86
22 A" 669 642 32.89 1.05 0.75 0.86
23 A" 269 258 13.41 0.24 0.75 0.86
24 A" 165 159 0.37 0.21 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18500.3 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 17741.8 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/aug-cc-pVDZ
ABC
0.67486 0.20821 0.16972

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.183 0.000
C2 -0.075 -1.339 0.000
C3 1.162 -0.441 0.000
C4 -0.821 1.421 0.000
H5 -0.357 -1.864 0.923
H6 -0.357 -1.864 -0.923
H7 2.248 -0.416 0.000
H8 -0.184 2.318 0.000
H9 -1.473 1.444 -0.888
H10 -1.473 1.444 0.888

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52381.31851.48562.27382.27382.32662.14372.13302.1330
C21.52381.52792.85931.09901.09902.49933.65943.23903.2390
C31.31851.52792.71992.27682.27681.08683.07033.35923.3592
C41.48562.85932.71993.44393.44393.57701.10051.10231.1023
H52.27381.09902.27683.44391.84653.12014.28703.93353.4916
H62.27381.09902.27683.44391.84653.12014.28703.49163.9335
H72.32662.49931.08683.57703.12013.12013.66004.25414.2541
H82.14373.65943.07031.10054.28704.28703.66001.79321.7932
H92.13303.23903.35921.10233.93353.49164.25411.79321.7767
H102.13303.23903.35921.10233.49163.93354.25411.79321.7767

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 51.196 H1 C2 C6 119.326
C2 C3 C6 24.906 C2 C3 C10 72.260
C2 C6 C3 35.838 C2 C6 H4 49.734
C2 C6 H5 32.853 C3 C2 C6 119.256
C3 C6 H4 52.040 C3 C6 H5 66.077
C3 C10 H7 9.357 C3 C10 H8 65.097
C3 C10 H9 74.666 H4 C6 H5 74.450
C6 C3 C10 86.267 H7 C10 H8 58.739
H7 C10 H9 77.947 H8 C10 H9 60.303
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability