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All results from a given calculation for HCOOC2H5 (Ethyl formate)

using model chemistry: MP3/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
Energy calculated at MP3/6-311+G(3df,2p)
 hartrees
Energy at 0K-267.915915
Energy at 298.15K 
HF Energy-266.928542
Nuclear repulsion energy178.789260
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 MP3/6-311+G(3df,2p)
Rotational Constants (cm-1) from geometry optimized at MP3/6-311+G(3df,2p)
ABC
0.60558 0.09780 0.08693

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.167 -0.279 0.000
C2 -0.682 -0.567 0.000
O3 0.000 0.695 0.000
C4 1.325 0.628 0.000
O5 1.971 -0.375 0.000
H6 -2.722 -1.216 0.000
H7 -2.449 0.290 0.883
H8 -2.449 0.290 -0.883
H9 -0.377 -1.130 -0.880
H10 -0.377 -1.130 0.880
H11 1.747 1.637 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51212.37573.60824.13951.08881.08821.08822.16872.16874.3583
C21.51211.43442.33652.66082.14042.15332.15331.08891.08893.2805
O32.37571.43441.32712.24293.32572.63492.63492.06132.06131.9853
C43.60822.33651.32711.19294.44773.89133.89132.60112.60111.0937
O54.13952.66082.24291.19294.76834.55684.55682.61942.61942.0243
H61.08882.14043.32574.44774.76831.76711.76712.50622.50625.3024
H71.08822.15332.63493.89134.55681.76711.76683.06972.51254.4952
H81.08822.15332.63493.89134.55681.76711.76682.51253.06974.4952
H92.16871.08892.06132.60112.61942.50623.06972.51251.76043.5984
H102.16871.08892.06132.60112.61942.50622.51253.06971.76043.5984
H114.35833.28051.98531.09372.02435.30244.49524.49523.59843.5984

picture of Ethyl formate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.439 C1 C2 H9 111.951
C1 C2 H10 111.951 C2 C1 H6 109.687
C2 C1 H7 110.746 C2 C1 H8 110.746
C2 O3 C4 115.525 O3 C2 H9 108.780
O3 C2 H10 108.780 O3 C4 O5 125.674
O3 C4 H11 109.816 O5 C4 H11 124.510
H6 C1 H7 108.525 H6 C1 H8 108.525
H7 C1 H8 108.549 H9 C2 H10 107.861
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability