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

using model chemistry: MP2/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-306.885016
Energy at 298.15K 
HF Energy-305.913436
Nuclear repulsion energy242.220438
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/aug-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' 3215 3083 4.95 51.91 0.70 0.82
2 A' 3170 3040 17.72 60.75 0.72 0.84
3 A' 3095 2968 16.81 91.22 0.05 0.09
4 A' 3087 2960 1.96 182.80 0.00 0.00
5 A' 3075 2949 15.18 169.01 0.01 0.01
6 A' 1762 1690 225.21 12.35 0.26 0.42
7 A' 1508 1446 5.05 1.06 0.66 0.80
8 A' 1490 1429 2.65 6.71 0.74 0.85
9 A' 1462 1402 13.36 5.92 0.62 0.76
10 A' 1419 1361 3.92 1.34 0.60 0.75
11 A' 1390 1333 66.10 0.07 0.70 0.83
12 A' 1372 1315 15.33 0.51 0.57 0.73
13 A' 1263 1211 384.17 0.91 0.75 0.86
14 A' 1139 1092 3.75 9.70 0.10 0.17
15 A' 1083 1039 106.67 2.84 0.59 0.74
16 A' 1009 968 13.08 1.77 0.13 0.23
17 A' 952 913 14.03 2.41 0.13 0.22
18 A' 854 819 12.80 8.83 0.16 0.27
19 A' 636 610 6.79 8.20 0.20 0.33
20 A' 424 407 0.73 0.32 0.68 0.81
21 A' 367 352 8.27 3.26 0.21 0.35
22 A' 196 188 5.31 0.39 0.55 0.71
23 A" 3180 3050 28.71 17.37 0.75 0.86
24 A" 3177 3046 3.64 48.23 0.75 0.86
25 A" 3151 3021 5.66 69.14 0.75 0.86
26 A" 1479 1418 6.10 5.01 0.75 0.86
27 A" 1471 1411 7.54 4.21 0.75 0.86
28 A" 1289 1236 1.12 3.44 0.75 0.86
29 A" 1174 1126 3.07 0.40 0.75 0.86
30 A" 1053 1009 3.64 0.06 0.75 0.86
31 A" 811 778 0.43 0.20 0.75 0.86
32 A" 598 574 4.31 0.37 0.75 0.86
33 A" 270 259 0.95 0.02 0.75 0.86
34 A" 154 148 4.84 0.02 0.75 0.86
35 A" 80 76 0.22 0.20 0.75 0.86
36 A" 49 47 0.34 0.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25951.0 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 24887.0 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/aug-cc-pVDZ
ABC
0.27727 0.06937 0.05730

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.322 0.045 0.000
C2 -0.917 -0.509 0.000
O3 0.000 0.499 0.000
O4 -0.616 -1.694 0.000
C5 1.385 0.052 0.000
C6 2.250 1.298 0.000
H7 -3.037 -0.786 0.000
H8 -2.471 0.675 0.889
H9 -2.471 0.675 -0.889
H10 1.552 -0.572 0.891
H11 1.552 -0.572 -0.891
H12 3.312 1.008 0.000
H13 2.055 1.909 -0.894
H14 2.055 1.909 0.894

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50952.36572.43583.70634.74091.09611.10001.10004.02244.02245.71594.84064.8406
C21.50951.36281.22272.36933.64712.13802.14602.14602.62592.62594.49353.93453.9345
O32.36571.36282.27751.45492.38823.29782.63162.63162.08572.08573.35132.64782.6478
O42.43581.22272.27752.65494.14342.58653.13763.13762.59802.59804.76744.57284.5728
C53.70632.36931.45492.65491.51774.50064.00524.00521.10071.10072.15182.16712.1671
C64.74093.64712.38824.14341.51775.68364.84424.84422.18672.18671.10111.09991.0999
H71.09612.13803.29782.58654.50065.68361.80151.80154.67994.67996.59825.83035.8303
H81.10002.14602.63163.13764.00524.84421.80151.77744.21184.57235.86045.01824.6908
H91.10002.14602.63163.13764.00524.84421.80151.77744.57234.21185.86044.69085.0182
H104.02242.62592.08572.59801.10072.18674.67994.21184.57231.78162.52783.09762.5317
H114.02242.62592.08572.59801.10072.18674.67994.57234.21181.78162.52782.53173.0976
H125.71594.49353.35134.76742.15181.10116.59825.86045.86042.52782.52781.78661.7866
H134.84063.93452.64784.57282.16711.09995.83035.01824.69083.09762.53171.78661.7881
H144.84063.93452.64784.57282.16711.09995.83034.69085.01822.53173.09761.78661.7881

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 110.793 C1 C2 O4 125.805
C2 C1 H7 109.248 C2 C1 H8 109.652
C2 C1 H9 109.652 C2 O3 C5 114.419
O3 C2 O4 123.403 O3 C5 C6 106.895
O3 C5 H10 108.604 O3 C5 H11 108.604
C5 C6 H12 109.474 C5 C6 H13 110.757
C5 C6 H14 110.757 C6 C5 H10 112.281
C6 C5 H11 112.281 H7 C1 H8 110.239
H7 C1 H9 110.239 H8 C1 H9 107.792
H10 C5 H11 108.061 H12 C6 H13 108.524
H12 C6 H14 108.524 H13 C6 H14 108.744
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability