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

using model chemistry: CISD/6-311G*

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 CISD/6-311G*
 hartrees
Energy at 0K-267.583376
Energy at 298.15K 
HF Energy-266.890902
Nuclear repulsion energy179.093193
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 CISD/6-311G*
Rotational Constants (cm-1) from geometry optimized at CISD/6-311G*
ABC
0.61196 0.09782 0.08706

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.165 -0.276 0.000
C2 -0.684 -0.569 0.000
O3 0.000 0.688 0.000
C4 1.323 0.626 0.000
O5 1.975 -0.368 0.000
H6 -2.728 -1.206 0.000
H7 -2.444 0.295 0.881
H8 -2.444 0.295 -0.881
H9 -0.381 -1.133 -0.878
H10 -0.381 -1.133 0.878
H11 1.737 1.637 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50892.36943.60214.14031.08761.08651.08652.16452.16454.3450
C21.50891.43102.33622.66672.14062.14892.14891.08641.08643.2753
O32.36941.43101.32412.23903.32102.62722.62722.05692.05691.9792
C43.60212.33621.32411.18884.44603.88223.88222.60182.60181.0918
O54.14032.66672.23901.18884.77694.55384.55382.62812.62812.0183
H61.08762.14063.32104.44604.77691.76381.76382.50662.50665.2931
H71.08652.14892.62723.88224.55381.76381.76263.06372.50844.4781
H81.08652.14892.62723.88224.55381.76381.76262.50843.06374.4781
H92.16451.08642.05692.60182.62812.50663.06372.50841.75553.5955
H102.16451.08642.05692.60182.62812.50662.50843.06371.75553.5955
H114.34503.27531.97921.09182.01835.29314.47814.47813.59553.5955

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 107.374 C1 C2 H9 111.995
C1 C2 H10 111.995 C2 C1 H6 110.004
C2 C1 H7 110.731 C2 C1 H8 110.731
C2 O3 C4 115.920 O3 C2 H9 108.808
O3 C2 H10 108.808 O3 C4 O5 125.913
O3 C4 H11 109.644 O5 C4 H11 124.443
H6 C1 H7 108.444 H6 C1 H8 108.444
H7 C1 H8 108.416 H9 C2 H10 107.785
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability