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

using model chemistry: MP2=FULL/TZVP

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/TZVP
 hartrees
Energy at 0K-307.063006
Energy at 298.15K 
HF Energy-305.979870
Nuclear repulsion energy244.015129
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/TZVP
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' 3232 3079 5.07 54.63 0.71 0.83
2 A' 3188 3037 18.61 62.26 0.73 0.84
3 A' 3111 2964 17.78 54.00 0.12 0.22
4 A' 3109 2962 0.77 175.00 0.01 0.01
5 A' 3096 2949 14.24 142.76 0.01 0.01
6 A' 1800 1715 223.59 7.98 0.29 0.45
7 A' 1547 1474 6.09 1.74 0.71 0.83
8 A' 1527 1455 3.18 13.11 0.73 0.85
9 A' 1502 1431 12.81 8.50 0.69 0.82
10 A' 1460 1391 4.58 2.71 0.67 0.80
11 A' 1430 1363 46.74 0.63 0.74 0.85
12 A' 1418 1351 18.48 1.35 0.75 0.86
13 A' 1291 1230 430.66 0.20 0.74 0.85
14 A' 1162 1107 8.74 8.81 0.12 0.21
15 A' 1106 1054 99.30 2.91 0.72 0.83
16 A' 1034 985 11.36 1.90 0.21 0.35
17 A' 965 919 8.01 2.38 0.21 0.35
18 A' 881 839 15.11 8.32 0.25 0.40
19 A' 651 620 6.19 8.06 0.31 0.47
20 A' 439 418 0.61 0.34 0.70 0.83
21 A' 377 359 7.94 2.96 0.29 0.45
22 A' 199 190 4.94 0.31 0.60 0.75
23 A" 3199 3048 28.19 21.25 0.75 0.86
24 A" 3196 3045 3.82 48.35 0.75 0.86
25 A" 3165 3015 7.94 69.60 0.75 0.86
26 A" 1506 1435 6.71 9.56 0.75 0.86
27 A" 1495 1425 8.84 8.84 0.75 0.86
28 A" 1318 1256 1.09 9.46 0.75 0.86
29 A" 1206 1149 3.65 0.83 0.75 0.86
30 A" 1077 1026 3.21 0.33 0.75 0.86
31 A" 833 793 0.15 0.19 0.75 0.86
32 A" 594 566 5.18 1.47 0.75 0.86
33 A" 268 256 1.01 0.08 0.75 0.86
34 A" 150 143 4.93 0.01 0.75 0.86
35 A" 67 64 0.25 0.39 0.75 0.86
36 A" 20i 19i 0.63 0.11 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26289.0 cm-1
Scaled (by 0.9527) Zero Point Vibrational Energy (zpe) 25045.5 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/TZVP
ABC
0.28119 0.07024 0.05802

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.305 0.038 0.000
C2 -0.908 -0.515 0.000
O3 0.000 0.487 0.000
O4 -0.610 -1.688 0.000
C5 1.377 0.061 0.000
C6 2.228 1.305 0.000
H7 -3.016 -0.781 0.000
H8 -2.454 0.662 0.879
H9 -2.454 0.662 -0.879
H10 1.556 -0.554 0.881
H11 1.556 -0.554 -0.881
H12 3.282 1.027 0.000
H13 2.030 1.907 -0.885
H14 2.030 1.907 0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50192.34812.41943.68184.70671.08471.08821.08824.00464.00465.67334.80234.8023
C21.50191.35211.21092.35663.62622.12402.13192.13192.61792.61794.46473.90883.9088
O32.34811.35212.25891.44132.37363.27132.61232.61232.06952.06953.32582.63032.6303
O42.41941.21092.25892.64684.12492.57103.11363.11362.59912.59914.74534.54684.5468
C53.68182.35661.44132.64681.50784.47243.97583.97581.08951.08952.13602.14872.1487
C64.70673.62622.37364.12491.50785.64354.80694.80692.16462.16461.08951.08811.0881
H71.08472.12403.27132.57104.47245.64351.78071.78074.66174.66176.55175.78465.7846
H81.08822.13192.61233.11363.97584.80691.78071.75904.19034.54525.81384.97624.6530
H91.08822.13192.61233.11363.97584.80691.78071.75904.54524.19035.81384.65304.9762
H104.00462.61792.06952.59911.08952.16464.66174.19034.54521.76252.50093.06592.5062
H114.00462.61792.06952.59911.08952.16464.66174.54524.19031.76252.50092.50623.0659
H125.67334.46473.32584.74532.13601.08956.55175.81385.81382.50092.50091.76741.7674
H134.80233.90882.63034.54682.14871.08815.78464.97624.65303.06592.50621.76741.7695
H144.80233.90882.63034.54682.14871.08815.78464.65304.97622.50623.06591.76741.7695

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 110.608 C1 C2 O4 125.873
C2 C1 H7 109.335 C2 C1 H8 109.754
C2 C1 H9 109.754 C2 O3 C5 115.010
O3 C2 O4 123.519 O3 C5 C6 107.172
O3 C5 H10 108.924 O3 C5 H11 108.924
C5 C6 H12 109.594 C5 C6 H13 110.693
C5 C6 H14 110.693 C6 C5 H10 111.892
C6 C5 H11 111.892 H7 C1 H8 110.071
H7 C1 H9 110.071 H8 C1 H9 107.838
H10 C5 H11 107.969 H12 C6 H13 108.503
H12 C6 H14 108.503 H13 C6 H14 108.795
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability