return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C4H8O2 (Ethyl acetate)

using model chemistry: CCD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-307.185291
Energy at 298.15K 
HF Energy-305.994355
Nuclear repulsion energy244.616034
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 CCD/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCD/aug-cc-pVTZ
ABC
0.28407 0.07035 0.05822

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.304 0.030 0.000
C2 -0.903 -0.514 0.000
O3 0.000 0.478 0.000
O4 -0.607 -1.679 0.000
C5 1.373 0.061 0.000
C6 2.224 1.311 0.000
H7 -3.011 -0.794 0.000
H8 -2.454 0.654 0.879
H9 -2.454 0.654 -0.879
H10 1.555 -0.554 0.881
H11 1.555 -0.554 -0.881
H12 3.279 1.037 0.000
H13 2.023 1.915 -0.884
H14 2.023 1.915 0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50322.34752.40783.67774.70641.08521.08921.08924.00154.00155.67374.80264.8026
C21.50321.34151.20172.34763.62072.12702.13202.13202.61132.61134.46033.90443.9044
O32.34751.34152.24111.43522.37513.26892.61292.61292.06412.06413.32652.63442.6344
O42.40781.20172.24112.63664.11822.56163.10293.10292.59192.59194.74154.54084.5408
C53.67772.34761.43522.63661.51214.46723.97183.97181.08981.08982.14112.15432.1543
C64.70643.62072.37514.11821.51215.64284.80554.80552.16882.16881.09021.08951.0895
H71.08522.12703.26892.56164.46725.64281.78351.78354.65694.65696.55155.78515.7851
H81.08922.13202.61293.10293.97184.80551.78351.75884.18774.54255.81314.97484.6516
H91.08922.13202.61293.10293.97184.80551.78351.75884.54254.18775.81314.65164.9748
H104.00152.61132.06412.59191.08982.16884.65694.18774.54251.76152.50593.07122.5132
H114.00152.61132.06412.59191.08982.16884.65694.54254.18771.76152.50592.51323.0712
H125.67374.46033.32654.74152.14111.09026.55155.81315.81312.50592.50591.76951.7695
H134.80263.90442.63444.54082.15431.08955.78514.97484.65163.07122.51321.76951.7689
H144.80263.90442.63444.54082.15431.08955.78514.65164.97482.51323.07121.76951.7689

picture of Ethyl acetate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 111.098 C1 C2 O4 125.422
C2 C1 H7 109.464 C2 C1 H8 109.621
C2 C1 H9 109.621 C2 O3 C5 115.403
O3 C2 O4 123.481 O3 C5 C6 107.354
O3 C5 H10 108.896 O3 C5 H11 108.896
C5 C6 H12 109.661 C5 C6 H13 110.749
C5 C6 H14 110.749 C6 C5 H10 111.899
C6 C5 H11 111.899 H7 C1 H8 110.213
H7 C1 H9 110.213 H8 C1 H9 107.684
H10 C5 H11 107.829 H12 C6 H13 108.540
H12 C6 H14 108.540 H13 C6 H14 108.541
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability