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

using model chemistry: MP2=FULL/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/6-311G**
 hartrees
Energy at 0K-307.045981
Energy at 298.15K 
HF Energy-305.953979
Nuclear repulsion energy244.026435
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 MP2=FULL/6-311G**
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' 3229 3063 5.58 59.35 0.72 0.83
2 A' 3186 3023 19.33 67.56 0.73 0.85
3 A' 3109 2949 18.50 55.29 0.13 0.23
4 A' 3106 2947 0.67 158.05 0.01 0.02
5 A' 3094 2935 14.24 120.55 0.01 0.02
6 A' 1827 1733 201.63 5.63 0.39 0.56
7 A' 1545 1465 5.51 1.75 0.71 0.83
8 A' 1521 1443 2.67 15.35 0.74 0.85
9 A' 1493 1416 12.07 10.13 0.71 0.83
10 A' 1455 1381 4.99 2.75 0.53 0.69
11 A' 1420 1347 65.00 1.09 0.73 0.84
12 A' 1406 1333 32.79 1.19 0.73 0.84
13 A' 1293 1226 413.21 0.33 0.71 0.83
14 A' 1161 1102 11.43 7.56 0.14 0.25
15 A' 1113 1056 85.19 2.89 0.74 0.85
16 A' 1027 974 13.10 1.75 0.22 0.36
17 A' 969 920 6.92 2.22 0.20 0.33
18 A' 883 837 12.95 8.04 0.28 0.43
19 A' 651 617 7.86 7.82 0.33 0.50
20 A' 434 412 0.53 0.28 0.70 0.82
21 A' 378 359 8.92 2.80 0.32 0.49
22 A' 201 190 4.26 0.34 0.64 0.78
23 A" 3196 3032 29.36 25.03 0.75 0.86
24 A" 3193 3029 4.39 52.80 0.75 0.86
25 A" 3160 2997 10.47 75.53 0.75 0.86
26 A" 1505 1428 7.15 10.41 0.75 0.86
27 A" 1498 1421 8.77 10.54 0.75 0.86
28 A" 1324 1256 1.50 8.12 0.75 0.86
29 A" 1204 1142 4.01 0.64 0.75 0.86
30 A" 1074 1019 4.09 0.17 0.75 0.86
31 A" 828 785 0.28 0.17 0.75 0.86
32 A" 605 574 4.60 1.06 0.75 0.86
33 A" 277 262 1.00 0.03 0.75 0.86
34 A" 155 147 4.25 0.02 0.75 0.86
35 A" 78 74 0.10 0.26 0.75 0.86
36 A" 45 42 0.78 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26319.6 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 24966.8 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 MP2=FULL/6-311G**
ABC
0.28062 0.07041 0.05812

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.305 0.042 0.000
C2 -0.906 -0.514 0.000
O3 0.000 0.490 0.000
O4 -0.608 -1.685 0.000
C5 1.372 0.055 0.000
C6 2.230 1.300 0.000
H7 -3.020 -0.779 0.000
H8 -2.450 0.670 0.882
H9 -2.450 0.670 -0.882
H10 1.550 -0.564 0.883
H11 1.550 -0.564 -0.883
H12 3.287 1.022 0.000
H13 2.027 1.904 -0.887
H14 2.027 1.904 0.887

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50572.34832.42173.67684.70601.08841.09181.09184.00114.00115.67734.79834.7983
C21.50571.35181.20882.34723.62192.13072.13602.13602.60992.60994.46503.90303.9030
O32.34831.35182.25831.43882.37213.27552.61022.61022.07192.07193.32962.62602.6260
O42.42171.20882.25832.63544.11822.57673.11713.11712.58662.58664.74314.53994.5399
C53.67682.34721.43882.63541.51184.46983.97003.97001.09311.09312.14562.15282.1528
C64.70603.62192.37214.11821.51185.64594.80374.80372.17172.17171.09311.09181.0918
H71.08842.13073.27552.57674.46985.64591.78881.78884.65914.65916.55885.78425.7842
H81.09182.13602.61023.11713.97004.80371.78881.76334.18614.54285.81514.96994.6447
H91.09182.13602.61023.11713.97004.80371.78881.76334.54284.18615.81514.64474.9699
H104.00112.60992.07192.58661.09312.17174.65914.18614.54281.76562.51273.07432.5140
H114.00112.60992.07192.58661.09312.17174.65914.54284.18611.76562.51272.51403.0743
H125.67734.46503.32964.74312.14561.09316.55885.81515.81512.51272.51271.77481.7748
H134.79833.90302.62604.53992.15281.09185.78424.96994.64473.07432.51401.77481.7735
H144.79833.90302.62604.53992.15281.09185.78424.64474.96992.51403.07431.77481.7735

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 110.418 C1 C2 O4 125.923
C2 C1 H7 109.384 C2 C1 H8 109.603
C2 C1 H9 109.603 C2 O3 C5 114.478
O3 C2 O4 123.659 O3 C5 C6 106.985
O3 C5 H10 109.071 O3 C5 H11 109.071
C5 C6 H12 109.864 C5 C6 H13 110.513
C5 C6 H14 110.513 C6 C5 H10 111.963
C6 C5 H11 111.963 H7 C1 H8 110.261
H7 C1 H9 110.261 H8 C1 H9 107.706
H10 C5 H11 107.733 H12 C6 H13 108.638
H12 C6 H14 108.638 H13 C6 H14 108.623
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability