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All results from a given calculation for C3H4O (Methylketene)

using model chemistry: MP3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-191.359858
Energy at 298.15K 
HF Energy-190.764543
Nuclear repulsion energy102.163573
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 MP3/6-31+G**
Rotational Constants (cm-1) from geometry optimized at MP3/6-31+G**
ABC
1.29441 0.14971 0.13762

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.765 0.127 -0.000
C2 0.476 0.575 -0.000
C3 1.680 -0.335 0.000
O4 -1.865 -0.268 0.000
H5 0.596 1.647 0.000
H6 1.379 -1.380 -0.000
H7 2.297 -0.165 -0.882
H8 2.296 -0.166 0.882

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8
C11.31912.48831.16892.03992.62013.19933.1990
C21.31911.50952.48801.07862.15342.15422.1543
C32.48831.50953.54592.25941.08771.08911.0891
O41.16892.48803.54593.11783.42894.25534.2549
H52.03991.07862.25943.11783.12672.63752.6375
H62.62012.15341.08773.42893.12671.75931.7593
H73.19932.15421.08914.25532.63751.75931.7637
H83.19902.15431.08914.25492.63751.75931.7637

picture of Methylketene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 123.063 C1 C2 H5 116.229
C2 C1 O4 179.875 C2 C3 H6 110.975
C2 C3 H7 110.957 C2 C3 H8 110.961
C3 C2 H5 120.707 H6 C3 H7 107.837
H6 C3 H8 107.838 H7 C3 H8 108.139
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability