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

using model chemistry: MP2/daug-cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-307.162471
Energy at 298.15K 
HF Energy-305.993108
Nuclear repulsion energy244.106394
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-pVTZ
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' 3217 3217 3.36 49.71 0.70 0.82
2 A' 3172 3172 14.12 58.49 0.72 0.84
3 A' 3095 3095 14.05 5.27 0.69 0.82
4 A' 3094 3094 1.64 251.48 0.01 0.02
5 A' 3081 3081 12.66 184.31 0.00 0.01
6 A' 1783 1783 233.51 12.44 0.23 0.38
7 A' 1535 1535 6.30 0.84 0.70 0.82
8 A' 1517 1517 2.85 6.75 0.75 0.86
9 A' 1491 1491 15.03 5.74 0.60 0.75
10 A' 1435 1435 4.70 0.80 0.66 0.79
11 A' 1413 1413 54.80 0.05 0.74 0.85
12 A' 1395 1395 15.95 0.56 0.52 0.69
13 A' 1280 1280 408.28 0.96 0.73 0.84
14 A' 1149 1149 7.41 9.24 0.09 0.17
15 A' 1096 1096 100.32 2.11 0.70 0.82
16 A' 1022 1022 10.42 1.87 0.16 0.27
17 A' 961 961 7.86 2.27 0.14 0.25
18 A' 867 867 12.20 8.57 0.15 0.27
19 A' 641 641 6.56 7.71 0.19 0.33
20 A' 430 430 0.68 0.25 0.72 0.83
21 A' 371 371 8.45 3.08 0.21 0.34
22 A' 197 197 5.37 0.38 0.52 0.68
23 A" 3181 3181 21.67 20.06 0.75 0.86
24 A" 3179 3179 2.10 45.77 0.75 0.86
25 A" 3146 3146 5.73 63.45 0.75 0.86
26 A" 1507 1507 6.58 4.71 0.75 0.86
27 A" 1499 1499 8.09 3.89 0.75 0.86
28 A" 1308 1308 1.10 3.18 0.75 0.86
29 A" 1189 1189 3.28 0.37 0.75 0.86
30 A" 1073 1073 4.12 0.05 0.75 0.86
31 A" 819 819 0.59 0.21 0.75 0.86
32 A" 608 608 4.27 0.31 0.75 0.86
33 A" 270 270 0.98 0.01 0.75 0.86
34 A" 155 155 4.85 0.02 0.75 0.86
35 A" 76 76 0.20 0.19 0.75 0.86
36 A" 51 51 0.34 0.07 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26151.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26151.0 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-pVTZ
ABC
0.28137 0.07038 0.05812

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.305 0.044 0.000
C2 -0.909 -0.508 0.000
O3 0.000 0.491 0.000
O4 -0.611 -1.683 0.000
C5 1.375 0.053 0.000
C6 2.232 1.294 0.000
H7 -3.017 -0.775 0.000
H8 -2.451 0.669 0.879
H9 -2.451 0.669 -0.879
H10 1.545 -0.565 0.881
H11 1.545 -0.565 -0.881
H12 3.285 1.013 0.000
H13 2.035 1.898 -0.884
H14 2.035 1.898 0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50092.34812.41933.68014.70661.08441.08831.08833.99623.99625.67314.80204.8020
C21.50091.35131.21232.35233.62212.12402.12932.12932.60832.60834.46133.90413.9041
O32.34811.35132.25861.44312.37243.27152.60962.60962.06852.06853.32582.62732.6273
O42.41931.21232.25862.63794.11692.57173.11293.11292.58342.58344.73734.53954.5395
C53.68012.35231.44312.63791.50844.46903.97343.97341.08961.08962.13722.14942.1494
C64.70663.62212.37244.11691.50845.64204.80574.80572.16922.16921.08931.08831.0883
H71.08442.12403.27152.57174.46905.64201.78221.78224.65064.65066.54985.78335.7833
H81.08832.12932.60963.11293.97344.80571.78221.75754.18184.53705.81254.97434.6515
H91.08832.12932.60963.11293.97344.80571.78221.75754.53704.18185.81254.65154.9743
H103.99622.60832.06852.58341.08962.16924.65064.18184.53701.76212.50833.06932.5109
H113.99622.60832.06852.58341.08962.16924.65064.53704.18181.76212.50832.51093.0693
H125.67314.46133.32584.73732.13721.08936.54985.81255.81252.50832.50831.76771.7677
H134.80203.90412.62734.53952.14941.08835.78334.97434.65153.06932.51091.76771.7680
H144.80203.90412.62734.53952.14941.08835.78334.65154.97432.51093.06931.76771.7680

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 110.721 C1 C2 O4 125.835
C2 C1 H7 109.430 C2 C1 H8 109.618
C2 C1 H9 109.618 C2 O3 C5 114.626
O3 C2 O4 123.444 O3 C5 C6 106.967
O3 C5 H10 108.712 O3 C5 H11 108.712
C5 C6 H12 109.659 C5 C6 H13 110.695
C5 C6 H14 110.695 C6 C5 H10 112.214
C6 C5 H11 112.214 H7 C1 H8 110.227
H7 C1 H9 110.227 H8 C1 H9 107.699
H10 C5 H11 107.923 H12 C6 H13 108.545
H12 C6 H14 108.545 H13 C6 H14 108.644
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability