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

using model chemistry: MP2/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-306.890940
Energy at 298.15K 
HF Energy-305.915250
Nuclear repulsion energy242.255127
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/daug-cc-pVDZ
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' 3212 3212 5.08 52.33 0.70 0.82
2 A' 3166 3166 18.38 61.25 0.72 0.84
3 A' 3089 3089 16.99 79.83 0.06 0.11
4 A' 3083 3083 1.70 192.14 0.00 0.00
5 A' 3070 3070 15.25 179.85 0.01 0.01
6 A' 1764 1764 227.19 12.69 0.25 0.40
7 A' 1507 1507 5.21 0.82 0.69 0.81
8 A' 1487 1487 2.50 7.20 0.75 0.85
9 A' 1463 1463 13.31 5.88 0.61 0.76
10 A' 1416 1416 4.59 1.15 0.61 0.76
11 A' 1390 1390 68.65 0.10 0.75 0.86
12 A' 1370 1370 11.27 0.54 0.51 0.67
13 A' 1263 1263 384.86 0.99 0.75 0.86
14 A' 1137 1137 3.98 9.83 0.09 0.17
15 A' 1083 1083 107.81 2.76 0.59 0.74
16 A' 1009 1009 12.84 1.74 0.14 0.25
17 A' 952 952 13.45 2.48 0.12 0.22
18 A' 852 852 12.58 8.86 0.16 0.28
19 A' 636 636 6.60 8.31 0.19 0.32
20 A' 424 424 0.72 0.33 0.65 0.79
21 A' 366 366 8.07 3.32 0.21 0.34
22 A' 195 195 5.24 0.37 0.52 0.68
23 A" 3176 3176 28.57 17.89 0.75 0.86
24 A" 3173 3173 3.72 48.47 0.75 0.86
25 A" 3146 3146 5.65 69.12 0.75 0.86
26 A" 1478 1478 6.37 4.82 0.75 0.86
27 A" 1472 1472 7.23 4.43 0.75 0.86
28 A" 1285 1285 1.08 3.47 0.75 0.86
29 A" 1173 1173 3.13 0.41 0.75 0.86
30 A" 1053 1053 3.44 0.04 0.75 0.86
31 A" 805 805 0.42 0.22 0.75 0.86
32 A" 599 599 4.14 0.34 0.75 0.86
33 A" 262 262 0.99 0.01 0.75 0.86
34 A" 155 155 4.81 0.02 0.75 0.86
35 A" 75 75 0.25 0.21 0.75 0.86
36 A" 39 39 0.37 0.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25912.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 25912.4 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/daug-cc-pVDZ
ABC
0.27701 0.06940 0.05731

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.320 0.044 0.000
C2 -0.916 -0.511 0.000
O3 0.000 0.497 0.000
O4 -0.615 -1.696 0.000
C5 1.385 0.053 0.000
C6 2.248 1.302 0.000
H7 -3.038 -0.783 0.000
H8 -2.468 0.675 0.888
H9 -2.468 0.675 -0.888
H10 1.556 -0.570 0.890
H11 1.556 -0.570 -0.890
H12 3.310 1.015 0.000
H13 2.051 1.911 -0.894
H14 2.051 1.911 0.894

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50982.36422.43613.70544.73801.09531.09941.09944.02414.02415.71334.83634.8363
C21.50981.36241.22222.36973.64682.13912.14592.14592.62812.62814.49333.93323.9332
O32.36421.36242.27741.45432.38743.29692.62922.62922.08592.08593.35012.64652.6465
O42.43611.22222.27742.65724.14532.58913.13763.13762.60252.60254.77014.57344.5734
C53.70542.36971.45432.65721.51784.50164.00294.00291.10011.10012.15162.16642.1664
C64.73803.64682.38744.14531.51785.68224.83944.83942.18552.18551.10051.09931.0993
H71.09532.13913.29692.58914.50165.68221.80011.80014.68424.68426.59775.82705.8270
H81.09942.14592.62923.13764.00294.83941.80011.77574.21224.57225.85575.01214.6847
H91.09942.14592.62923.13764.00294.83941.80011.77574.57224.21225.85574.68475.0121
H104.02412.62812.08592.60251.10012.18554.68424.21224.57221.78072.52623.09582.5300
H114.02412.62812.08592.60251.10012.18554.68424.57224.21221.78072.52622.53003.0958
H125.71334.49333.35014.77012.15161.10056.59775.85575.85572.52622.52621.78551.7855
H134.83633.93322.64654.57342.16641.09935.82705.01214.68473.09582.53001.78551.7877
H144.83633.93322.64654.57342.16641.09935.82704.68475.01212.53003.09581.78551.7877

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 110.688 C1 C2 O4 125.844
C2 C1 H7 109.367 C2 C1 H8 109.651
C2 C1 H9 109.651 C2 O3 C5 114.508
O3 C2 O4 123.469 O3 C5 C6 106.869
O3 C5 H10 108.693 O3 C5 H11 108.693
C5 C6 H12 109.492 C5 C6 H13 110.730
C5 C6 H14 110.730 C6 C5 H10 112.212
C6 C5 H11 112.212 H7 C1 H8 110.217
H7 C1 H9 110.217 H8 C1 H9 107.716
H10 C5 H11 108.059 H12 C6 H13 108.516
H12 C6 H14 108.516 H13 C6 H14 108.798
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability