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

using model chemistry: CCSD/aug-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 CCSD/aug-cc-pVTZ
 hartrees
Energy at 0K-267.948816
Energy at 298.15K 
HF Energy-266.933475
Nuclear repulsion energy178.197016
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 CCSD/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD/aug-cc-pVTZ
ABC
0.59830 0.09740 0.08647

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.171 -0.270 0.000
C2 -0.689 -0.565 0.000
O3 0.000 0.703 0.000
C4 1.332 0.623 0.000
O5 1.975 -0.390 0.000
H6 -2.730 -1.206 0.000
H7 -2.451 0.301 0.885
H8 -2.451 0.301 -0.885
H9 -0.382 -1.127 -0.882
H10 -0.382 -1.127 0.882
H11 1.759 1.630 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51132.37883.61514.14801.09061.08981.08982.17072.17074.3655
C21.51131.44242.34422.66972.13982.15382.15381.08991.08993.2879
O32.37881.44241.33452.25743.33122.63662.63662.06682.06681.9889
C43.61512.34421.33451.20034.45523.89853.89852.60392.60391.0936
O54.14802.66972.25741.20034.77574.56654.56652.62272.62272.0316
H61.09062.13983.33124.45524.77571.77011.77012.50932.50935.3104
H71.08982.15382.63663.89854.56651.77011.77013.07272.51394.5029
H81.08982.15382.63663.89854.56651.77011.77012.51393.07274.5029
H92.17071.08992.06682.60392.62272.50933.07272.51391.76383.6008
H102.17071.08992.06682.60392.62272.50932.51393.07271.76383.6008
H114.36553.28791.98891.09362.03165.31044.50294.50293.60083.6008

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 107.267 C1 C2 H9 112.115
C1 C2 H10 112.115 C2 C1 H6 109.593
C2 C1 H7 110.746 C2 C1 H8 110.746
C2 O3 C4 115.109 O3 C2 H9 108.607
O3 C2 H10 108.607 O3 C4 O5 125.812
O3 C4 H11 109.590 O5 C4 H11 124.598
H6 C1 H7 108.549 H6 C1 H8 108.549
H7 C1 H8 108.598 H9 C2 H10 108.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability