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

using model chemistry: B2PLYP=FULLultrafine/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULLultrafine/6-31+G**
 hartrees
Energy at 0K-307.425706
Energy at 298.15K 
HF Energy-307.108923
Nuclear repulsion energy242.935458
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 B2PLYP=FULLultrafine/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3217 3217 5.97 60.76 0.70 0.82
2 A' 3166 3166 23.54 71.51 0.72 0.84
3 A' 3106 3106 17.27 84.67 0.09 0.16
4 A' 3100 3100 2.51 156.17 0.01 0.01
5 A' 3086 3086 18.20 136.91 0.01 0.02
6 A' 1789 1789 267.72 8.91 0.28 0.43
7 A' 1544 1544 5.23 1.65 0.64 0.78
8 A' 1526 1526 3.75 12.21 0.72 0.84
9 A' 1500 1500 15.32 8.66 0.68 0.81
10 A' 1454 1454 5.24 3.23 0.68 0.81
11 A' 1429 1429 53.04 0.64 0.74 0.85
12 A' 1410 1410 7.92 2.02 0.74 0.85
13 A' 1286 1286 423.15 0.86 0.53 0.69
14 A' 1152 1152 9.17 7.79 0.13 0.24
15 A' 1086 1086 114.26 3.13 0.69 0.82
16 A' 1027 1027 6.04 1.60 0.23 0.38
17 A' 957 957 8.95 2.29 0.21 0.35
18 A' 865 865 12.31 9.33 0.24 0.39
19 A' 638 638 6.14 8.45 0.26 0.41
20 A' 432 432 0.87 0.40 0.70 0.82
21 A' 369 369 8.66 3.20 0.25 0.40
22 A' 194 194 5.98 0.29 0.57 0.72
23 A" 3179 3179 37.22 14.88 0.75 0.86
24 A" 3175 3175 4.44 55.14 0.75 0.86
25 A" 3153 3153 3.57 88.14 0.75 0.86
26 A" 1513 1513 7.56 9.65 0.75 0.86
27 A" 1504 1504 9.68 7.87 0.75 0.86
28 A" 1308 1308 0.93 8.07 0.75 0.86
29 A" 1195 1195 3.91 0.88 0.75 0.86
30 A" 1078 1078 4.76 0.08 0.75 0.86
31 A" 822 822 0.34 0.31 0.75 0.86
32 A" 607 607 5.69 1.04 0.75 0.86
33 A" 268 268 1.09 0.02 0.75 0.86
34 A" 154 154 5.48 0.01 0.75 0.86
35 A" 65 65 0.30 0.41 0.75 0.86
36 A" 33 33 0.44 0.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26192.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26192.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULLultrafine/6-31+G**
ABC
0.27945 0.06941 0.05738

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.315 0.024 0.000
C2 -0.912 -0.522 0.000
O3 0.000 0.480 0.000
O4 -0.610 -1.701 0.000
C5 1.391 0.071 0.000
C6 2.229 1.331 0.000
H7 -3.022 -0.801 0.000
H8 -2.470 0.649 0.880
H9 -2.470 0.649 -0.880
H10 1.572 -0.544 0.882
H11 1.572 -0.544 -0.882
H12 3.289 1.065 0.000
H13 2.025 1.934 -0.886
H14 2.025 1.934 0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50582.35942.42553.70594.72831.08681.09081.09084.02574.02575.69934.82374.8237
C21.50581.35471.21752.37743.64632.12892.13882.13882.63532.63534.48993.92923.9292
O32.35941.35472.26551.44962.38593.28252.62752.62752.07332.07333.34012.64552.6455
O42.42551.21752.26552.67324.15402.57423.12393.12392.62252.62254.78074.57664.5766
C53.70592.37741.44962.67321.51304.49814.00164.00161.09111.09112.14242.15782.1578
C64.72833.64632.38594.15401.51305.66754.82924.82922.17412.17411.09201.09081.0908
H71.08682.12893.28252.57424.49815.66751.78431.78434.68464.68466.58085.80865.8086
H81.09082.13882.62753.12394.00164.82921.78431.76074.21404.56785.84024.99754.6751
H91.09082.13882.62753.12394.00164.82921.78431.76074.56784.21405.84024.67514.9975
H104.02572.63532.07332.62251.09112.17414.68464.21404.56781.76492.51353.07782.5194
H114.02572.63532.07332.62251.09112.17414.68464.56784.21401.76492.51352.51943.0778
H125.69934.48993.34014.78072.14241.09206.58085.84025.84022.51352.51351.77051.7705
H134.82373.92922.64554.57662.15781.09085.80864.99754.67513.07782.51941.77051.7711
H144.82373.92922.64554.57662.15781.09085.80864.67514.99752.51943.07781.77051.7711

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 111.037 C1 C2 O4 125.580
C2 C1 H7 109.334 C2 C1 H8 109.888
C2 C1 H9 109.888 C2 O3 C5 115.899
O3 C2 O4 123.384 O3 C5 C6 107.271
O3 C5 H10 108.556 O3 C5 H11 108.556
C5 C6 H12 109.600 C5 C6 H13 110.895
C5 C6 H14 110.895 C6 C5 H10 112.195
C6 C5 H11 112.195 H7 C1 H8 110.046
H7 C1 H9 110.046 H8 C1 H9 107.621
H10 C5 H11 107.958 H12 C6 H13 108.413
H12 C6 H14 108.413 H13 C6 H14 108.553
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability