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

using model chemistry: AM1

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at AM1
 hartrees
Energy at 0K 
Energy at 298.15K-0.163044
HF Energy-0.163044
Nuclear repulsion energy165.448589
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 AM1
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' 3162 3015 1.60 133.14 0.02 0.03
2 A' 3155 3008 11.56 137.48 0.01 0.02
3 A' 3103 2959 1.66 142.83 0.08 0.15
4 A' 3071 2928 10.26 61.65 0.75 0.85
5 A' 3071 2928 8.87 217.48 0.75 0.86
6 A' 2075 1978 310.74 12.57 0.38 0.55
7 A' 1518 1447 263.54 1.95 0.69 0.82
8 A' 1430 1364 31.98 13.55 0.54 0.70
9 A' 1414 1349 1.51 15.14 0.66 0.79
10 A' 1412 1346 54.02 7.66 0.73 0.84
11 A' 1399 1334 0.72 25.83 0.73 0.84
12 A' 1394 1329 1.69 36.12 0.74 0.85
13 A' 1369 1305 11.17 40.33 0.75 0.86
14 A' 1312 1251 96.62 5.36 0.61 0.76
15 A' 1233 1176 1.08 19.69 0.67 0.80
16 A' 1134 1081 0.60 13.31 0.35 0.52
17 A' 1049 1000 0.57 1.97 0.66 0.80
18 A' 969 924 0.73 5.91 0.63 0.77
19 A' 659 628 21.19 8.91 0.50 0.66
20 A' 436 416 0.37 0.66 0.75 0.86
21 A' 405 386 10.44 4.19 0.48 0.65
22 A' 207 197 4.37 0.48 0.46 0.63
23 A" 3073 2930 4.27 49.19 0.75 0.86
24 A" 3063 2920 18.23 109.82 0.75 0.86
25 A" 3037 2896 0.16 156.98 0.75 0.86
26 A" 1380 1316 2.08 50.90 0.75 0.86
27 A" 1369 1306 8.26 47.50 0.75 0.86
28 A" 1227 1170 2.18 31.98 0.75 0.86
29 A" 1153 1100 7.06 8.22 0.75 0.86
30 A" 1070 1020 11.50 3.51 0.75 0.86
31 A" 845 805 0.00 0.13 0.75 0.86
32 A" 555 530 8.36 2.72 0.75 0.86
33 A" 158 151 6.63 0.03 0.75 0.86
34 A" 107 102 3.27 0.06 0.75 0.86
35 A" 48 45 0.11 1.25 0.75 0.86
36 A" 31i 30i 0.08 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26014.6 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 24804.9 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 AM1
ABC
0.27689 0.07006 0.05782

See section I.F.4 to change rotational constant units
Geometric Data calculated at AM1

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.329 -0.020 0.000
C2 -0.927 -0.523 0.000
O3 0.000 0.482 0.000
O4 -0.527 -1.689 0.000
C5 1.382 0.082 0.000
C6 2.191 1.356 0.000
H7 -3.033 -0.887 0.000
H8 -2.503 0.607 0.908
H9 -2.503 0.607 -0.908
H10 1.576 -0.539 0.913
H11 1.576 -0.539 -0.913
H12 3.277 1.097 0.000
H13 1.961 1.968 -0.905
H14 1.961 1.968 0.905

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.48882.38222.45563.71234.72481.11661.11721.11724.04364.04365.71574.81354.8135
C21.48881.36751.23292.38753.64092.13682.14092.14092.66492.66494.50543.91963.9196
O32.38221.36752.23451.43892.35913.32752.66532.66532.08822.08823.33402.62122.6212
O42.45561.23292.23452.60494.08242.63083.16223.16222.56572.56574.71554.51484.5148
C53.71232.38751.43892.60491.50904.52024.02414.02411.12131.12132.14922.16992.1699
C64.72483.64092.35914.08241.50905.68524.83934.83932.19162.19161.11611.11611.1161
H71.11662.13683.32752.63084.52025.68521.82681.82684.71164.71166.61425.82275.8227
H81.11722.14092.66533.16224.02414.83931.82681.81594.23694.61175.87095.00604.6663
H91.11722.14092.66533.16224.02414.83931.82681.81594.61174.23695.87094.66635.0060
H104.04362.66492.08822.56571.12132.19164.71164.23694.61171.82632.53023.12032.5360
H114.04362.66492.08822.56571.12132.19164.71164.61174.23691.82632.53022.53603.1203
H125.71574.50543.33404.71552.14921.11616.61425.87095.87092.53022.53021.81901.8190
H134.81353.91962.62124.51482.16991.11615.82275.00604.66633.12032.53601.81901.8096
H144.81353.91962.62124.51482.16991.11615.82274.66635.00602.53603.12031.81901.8096

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 112.959 C1 C2 O4 128.661
C2 C1 H7 109.363 C2 C1 H8 109.650
C2 C1 H9 109.650 C2 O3 C5 116.565
O3 C2 O4 118.380 O3 C5 C6 106.285
O3 C5 H10 108.669 O3 C5 H11 108.669
C5 C6 H12 108.989 C5 C6 H13 110.602
C5 C6 H14 110.602 C6 C5 H10 112.019
C6 C5 H11 112.019 H7 C1 H8 109.722
H7 C1 H9 109.722 H8 C1 H9 108.719
H10 C5 H11 109.049 H12 C6 H13 109.150
H12 C6 H14 109.150 H13 C6 H14 108.320
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability