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

using model chemistry: QCISD/Def2TZVPP

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 QCISD/Def2TZVPP
 hartrees
Energy at 0K-267.940327
Energy at 298.15K 
HF Energy-266.940569
Nuclear repulsion energy178.187155
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 QCISD/Def2TZVPP
Rotational Constants (cm-1) from geometry optimized at QCISD/Def2TZVPP
ABC
0.59838 0.09736 0.08643

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.171 -0.268 0.000
C2 -0.689 -0.563 0.000
O3 0.000 0.703 0.000
C4 1.333 0.621 0.000
O5 1.976 -0.393 0.000
H6 -2.731 -1.204 0.000
H7 -2.451 0.302 0.884
H8 -2.451 0.302 -0.884
H9 -0.384 -1.126 -0.881
H10 -0.384 -1.126 0.881
H11 1.760 1.628 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51112.37893.61594.14891.09001.08921.08922.16962.16964.3652
C21.51111.44182.34392.67032.13992.15302.15301.08901.08903.2866
O32.37891.44181.33582.25923.33102.63652.63652.06632.06631.9885
C43.61592.34391.33581.20024.45543.89953.89952.60342.60341.0934
O54.14892.67032.25921.20024.77604.56744.56742.62302.62302.0319
H61.09002.13993.33104.45544.77601.76891.76892.50822.50825.3096
H71.08922.15302.63653.89954.56741.76891.76893.07092.51314.5030
H81.08922.15302.63653.89954.56741.76891.76892.51313.07094.5030
H92.16961.08902.06632.60342.62302.50823.07092.51311.76103.5998
H102.16961.08902.06632.60342.62302.50822.51313.07091.76103.5998
H114.36523.28661.98851.09342.03195.30964.50304.50303.59983.5998

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 107.316 C1 C2 H9 112.091
C1 C2 H10 112.091 C2 C1 H6 109.648
C2 C1 H7 110.739 C2 C1 H8 110.739
C2 O3 C4 115.047 O3 C2 H9 108.668
O3 C2 H10 108.668 O3 C4 O5 125.865
O3 C4 H11 109.479 O5 C4 H11 124.656
H6 C1 H7 108.533 H6 C1 H8 108.533
H7 C1 H8 108.588 H9 C2 H10 107.912
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability