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

using model chemistry: MP2=FULL/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=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-155.459361
Energy at 298.15K 
HF Energy-154.882487
Nuclear repulsion energy107.254305
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-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' 3315 3213 0.34 132.44 0.27 0.43
2 A' 3169 3071 13.49 73.71 0.73 0.84
3 A' 3089 2994 65.61 157.91 0.11 0.21
4 A' 3063 2968 23.11 237.53 0.01 0.02
5 A' 1823 1767 11.53 42.10 0.09 0.17
6 A' 1515 1468 4.87 7.82 0.40 0.57
7 A' 1475 1430 9.05 9.39 0.51 0.68
8 A' 1388 1345 0.03 3.30 0.64 0.78
9 A' 1192 1155 3.43 9.61 0.32 0.49
10 A' 1073 1040 2.19 7.28 0.07 0.13
11 A' 1044 1012 28.63 3.22 0.26 0.41
12 A' 984 954 7.20 9.39 0.11 0.19
13 A' 933 904 12.85 4.17 0.38 0.55
14 A' 670 649 0.58 14.16 0.59 0.74
15 A' 318 308 1.57 1.68 0.75 0.86
16 A" 3172 3074 37.43 104.67 0.75 0.86
17 A" 3147 3050 12.24 73.69 0.75 0.86
18 A" 1471 1425 7.92 5.31 0.75 0.86
19 A" 1102 1068 1.39 0.41 0.75 0.86
20 A" 1032 1000 0.01 1.21 0.75 0.86
21 A" 987 957 2.10 0.78 0.75 0.86
22 A" 673 652 32.96 1.06 0.75 0.86
23 A" 269 261 13.27 0.24 0.75 0.86
24 A" 166 161 0.41 0.21 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18534.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 17963.3 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/aug-cc-pVDZ
ABC
0.67620 0.20870 0.17011

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.183 0.000
C2 -0.072 -1.337 0.000
C3 1.161 -0.439 0.000
C4 -0.823 1.418 0.000
H5 -0.354 -1.863 0.922
H6 -0.354 -1.863 -0.922
H7 2.247 -0.414 0.000
H8 -0.189 2.316 0.000
H9 -1.474 1.439 -0.888
H10 -1.474 1.439 0.888

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.52191.31731.48382.27152.27152.32482.14162.13062.1306
C21.52191.52622.85541.09811.09812.49623.65533.23453.2345
C31.31731.52622.71722.27472.27471.08573.06813.35583.3558
C41.48382.85542.71723.43943.43943.57451.09961.10131.1013
H52.27151.09812.27473.43941.84453.11674.28243.92823.4866
H62.27151.09812.27473.43941.84453.11674.28243.48663.9282
H72.32482.49621.08573.57453.11673.11673.65874.25084.2508
H82.14163.65533.06811.09964.28244.28243.65871.79151.7915
H92.13063.23453.35581.10133.92823.48664.25081.79151.7751
H102.13063.23453.35581.10133.48663.92824.25081.79151.7751

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 51.212 H1 C2 C6 119.335
C2 C3 C6 24.903 C2 C3 C10 72.214
C2 C6 C3 35.820 C2 C6 H4 49.732
C2 C6 H5 32.873 C3 C2 C6 119.277
C3 C6 H4 52.060 C3 C6 H5 66.081
C3 C10 H7 9.336 C3 C10 H8 65.125
C3 C10 H9 74.664 H4 C6 H5 74.446
C6 C3 C10 86.226 H7 C10 H8 58.790
H7 C10 H9 77.948 H8 C10 H9 60.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability