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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31+G**
 hartrees
Energy at 0K-306.852617
Energy at 298.15K 
HF Energy-305.892913
Nuclear repulsion energy243.269741
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/6-31+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' 3273 3074 4.51 55.17 0.72 0.84
2 A' 3228 3032 18.23 64.57 0.74 0.85
3 A' 3149 2958 17.23 71.91 0.09 0.17
4 A' 3144 2953 1.88 148.87 0.00 0.01
5 A' 3132 2941 15.82 129.40 0.01 0.02
6 A' 1794 1685 239.28 12.81 0.26 0.42
7 A' 1564 1469 4.25 1.83 0.57 0.72
8 A' 1547 1453 3.96 11.75 0.72 0.84
9 A' 1523 1430 14.48 8.86 0.69 0.82
10 A' 1473 1383 5.37 3.12 0.62 0.76
11 A' 1447 1359 58.35 0.62 0.63 0.77
12 A' 1424 1338 7.63 1.98 0.72 0.83
13 A' 1301 1222 424.86 0.48 0.73 0.84
14 A' 1167 1096 6.18 8.21 0.14 0.24
15 A' 1108 1040 101.20 3.41 0.61 0.76
16 A' 1041 977 10.02 1.76 0.21 0.35
17 A' 969 910 10.45 2.28 0.24 0.39
18 A' 874 821 15.41 9.47 0.21 0.35
19 A' 643 604 6.89 7.87 0.26 0.42
20 A' 436 409 0.69 0.37 0.72 0.84
21 A' 372 350 8.25 2.87 0.25 0.40
22 A' 197 185 5.75 0.29 0.57 0.72
23 A" 3243 3046 26.73 23.05 0.75 0.86
24 A" 3239 3042 3.26 50.59 0.75 0.86
25 A" 3209 3014 7.75 69.35 0.75 0.86
26 A" 1533 1440 7.41 9.52 0.75 0.86
27 A" 1523 1430 9.29 8.02 0.75 0.86
28 A" 1319 1239 0.86 7.80 0.75 0.86
29 A" 1208 1135 3.83 1.10 0.75 0.86
30 A" 1086 1020 3.32 0.12 0.75 0.86
31 A" 832 781 0.18 0.31 0.75 0.86
32 A" 607 570 5.29 1.10 0.75 0.86
33 A" 275 258 1.09 0.02 0.75 0.86
34 A" 154 145 5.65 0.01 0.75 0.86
35 A" 68 64 0.20 0.41 0.75 0.86
36 A" 32 30 0.48 0.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26565.2 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 24950.1 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/6-31+G**
ABC
0.27877 0.06990 0.05768

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.309 0.032 0.000
C2 -0.911 -0.517 0.000
O3 0.000 0.490 0.000
O4 -0.608 -1.700 0.000
C5 1.385 0.065 0.000
C6 2.226 1.317 0.000
H7 -3.016 -0.791 0.000
H8 -2.459 0.654 0.879
H9 -2.459 0.654 -0.879
H10 1.560 -0.549 0.882
H11 1.560 -0.549 -0.882
H12 3.282 1.049 0.000
H13 2.022 1.917 -0.884
H14 2.022 1.917 0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50182.35422.42843.69494.71421.08431.08751.08754.01104.01105.68284.80574.8057
C21.50181.35781.22202.36933.63442.12222.13052.13052.62432.62434.47593.91263.9126
O32.35421.35782.27291.44912.37523.27632.61642.61642.07162.07163.32912.62802.6280
O42.42841.22202.27292.66254.13982.57453.12173.12172.60792.60794.76304.55864.5586
C53.69492.36931.44912.66251.50854.48373.98733.98731.08871.08872.13642.14852.1485
C64.71423.63442.37524.13981.50855.65014.81284.81282.16932.16931.08901.08741.0874
H71.08432.12223.27632.57454.48375.65011.78071.78074.66644.66646.56085.78725.7872
H81.08752.13052.61643.12173.98734.81281.78071.75844.19544.54995.82094.97794.6553
H91.08752.13052.61643.12173.98734.81281.78071.75844.54994.19545.82094.65534.9779
H104.01102.62432.07162.60791.08872.16934.66644.19544.54991.76332.50923.06812.5092
H114.01102.62432.07162.60791.08872.16934.66644.54994.19541.76332.50922.50923.0681
H125.68284.47593.32914.76302.13641.08906.56085.82095.82092.50922.50921.76681.7668
H134.80573.91262.62804.55862.14851.08745.78724.97794.65533.06812.50921.76681.7677
H144.80573.91262.62804.55862.14851.08745.78724.65534.97792.50923.06811.76681.7677

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 110.726 C1 C2 O4 125.825
C2 C1 H7 109.236 C2 C1 H8 109.699
C2 C1 H9 109.699 C2 O3 C5 115.111
O3 C2 O4 123.449 O3 C5 C6 106.832
O3 C5 H10 108.595 O3 C5 H11 108.595
C5 C6 H12 109.612 C5 C6 H13 110.671
C5 C6 H14 110.671 C6 C5 H10 112.275
C6 C5 H11 112.275 H7 C1 H8 110.154
H7 C1 H9 110.154 H8 C1 H9 107.883
H10 C5 H11 108.153 H12 C6 H13 108.540
H12 C6 H14 108.540 H13 C6 H14 108.749
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability