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

using model chemistry: QCISD(T)/cc-pVTZ

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(T)/cc-pVTZ
 hartrees
Energy at 0K-267.971991
Energy at 298.15K 
HF Energy-266.928617
Nuclear repulsion energy177.747700
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(T)/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/cc-pVTZ
ABC
0.59079 0.09726 0.08620

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.174 -0.262 0.000
C2 -0.691 -0.560 0.000
O3 0.000 0.712 0.000
C4 1.339 0.617 0.000
O5 1.974 -0.408 0.000
H6 -2.737 -1.197 0.000
H7 -2.452 0.311 0.886
H8 -2.452 0.311 -0.886
H9 -0.384 -1.124 -0.882
H10 -0.384 -1.124 0.882
H11 1.772 1.623 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51312.38213.62094.15071.09161.09071.09072.17372.17374.3734
C21.51311.44722.34582.66912.14362.15542.15541.09111.09113.2911
O32.38211.44721.34212.26963.33702.63792.63792.07292.07291.9929
C43.62092.34581.34211.20574.46133.90503.90502.60342.60341.0957
O54.15072.66912.26961.20574.77714.57094.57092.61792.61792.0409
H61.09162.14363.33704.46134.77711.77161.77162.51412.51415.3187
H71.09072.15542.63793.90504.57091.77161.77133.07582.51704.5114
H81.09072.15542.63793.90504.57091.77161.77132.51703.07584.5114
H92.17371.09112.07292.60342.61792.51413.07582.51701.76443.6023
H102.17371.09112.07292.60342.61792.51412.51703.07581.76443.6023
H114.37343.29111.99291.09572.04095.31874.51144.51143.60233.6023

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 107.139 C1 C2 H9 112.155
C1 C2 H10 112.155 C2 C1 H6 109.707
C2 C1 H7 110.699 C2 C1 H8 110.699
C2 O3 C4 114.440 O3 C2 H9 108.693
O3 C2 H10 108.693 O3 C4 O5 125.866
O3 C4 H11 109.256 O5 C4 H11 124.877
H6 C1 H7 108.547 H6 C1 H8 108.547
H7 C1 H8 108.583 H9 C2 H10 107.911
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability