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

using model chemistry: MP2=FULL/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=FULL/cc-pVDZ
 hartrees
Energy at 0K-306.834952
Energy at 298.15K 
HF Energy-305.896454
Nuclear repulsion energy243.126536
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/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' 3247 3086 4.35 64.12 0.72 0.84
2 A' 3205 3046 16.23 73.64 0.73 0.85
3 A' 3114 2960 3.83 104.59 0.00 0.00
4 A' 3109 2954 15.54 150.95 0.05 0.09
5 A' 3101 2947 16.05 79.02 0.02 0.04
6 A' 1833 1742 191.63 5.21 0.43 0.60
7 A' 1524 1448 4.14 1.46 0.75 0.86
8 A' 1501 1427 2.32 18.06 0.75 0.86
9 A' 1472 1399 12.26 12.37 0.73 0.84
10 A' 1440 1369 5.83 3.00 0.64 0.78
11 A' 1406 1336 89.96 1.64 0.74 0.85
12 A' 1384 1316 22.43 0.90 0.67 0.81
13 A' 1289 1225 395.04 0.37 0.73 0.84
14 A' 1151 1094 9.34 7.66 0.14 0.24
15 A' 1110 1055 85.52 3.07 0.70 0.83
16 A' 1017 966 13.34 1.44 0.18 0.31
17 A' 969 921 8.33 2.23 0.17 0.29
18 A' 874 831 11.21 8.32 0.27 0.42
19 A' 648 616 7.85 7.77 0.33 0.49
20 A' 428 406 0.48 0.31 0.68 0.81
21 A' 375 356 9.10 2.73 0.33 0.50
22 A' 198 188 3.97 0.35 0.64 0.78
23 A" 3212 3053 25.33 45.22 0.75 0.86
24 A" 3212 3052 1.44 47.78 0.75 0.86
25 A" 3167 3010 15.61 74.44 0.75 0.86
26 A" 1486 1412 6.03 14.31 0.75 0.86
27 A" 1479 1406 8.27 12.14 0.75 0.86
28 A" 1303 1238 1.08 7.24 0.75 0.86
29 A" 1188 1129 4.24 0.98 0.75 0.86
30 A" 1065 1012 5.36 0.06 0.75 0.86
31 A" 816 775 0.49 0.16 0.75 0.86
32 A" 606 576 4.09 0.90 0.75 0.86
33 A" 280 266 1.02 0.01 0.75 0.86
34 A" 156 148 3.84 0.03 0.75 0.86
35 A" 80 76 0.00 0.22 0.75 0.86
36 A" 63 60 0.89 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26251.7 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 24949.6 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/cc-pVDZ
ABC
0.27804 0.07007 0.05780

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.310 0.044 0.000
C2 -0.909 -0.514 0.000
O3 0.000 0.495 0.000
O4 -0.609 -1.691 0.000
C5 1.374 0.054 0.000
C6 2.236 1.300 0.000
H7 -3.033 -0.780 0.000
H8 -2.457 0.678 0.887
H9 -2.457 0.678 -0.887
H10 1.554 -0.573 0.888
H11 1.554 -0.573 -0.888
H12 3.301 1.020 0.000
H13 2.034 1.910 -0.893
H14 2.034 1.910 0.893

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50882.35392.43043.68394.71631.09621.09991.09994.01254.01255.69544.81164.8116
C21.50881.35761.21492.35193.62992.14132.14582.14582.61832.61834.48033.91563.9156
O32.35391.35762.26921.44242.37633.29022.61862.61862.08382.08383.34232.63392.6339
O42.43041.21492.26922.64154.12772.59013.13293.13292.59172.59174.75804.55554.5555
C53.68392.35191.44242.64151.51464.48513.98113.98111.10191.10192.15572.16272.1627
C64.71633.62992.37634.12771.51465.66464.81624.81622.18152.18151.10101.10021.1002
H71.09622.14133.29022.59014.48515.66461.80101.80104.67684.67686.58495.80615.8061
H81.09992.14582.61863.13293.98114.81621.80101.77394.20124.56085.83584.98544.6570
H91.09992.14582.61863.13293.98114.81621.80101.77394.56084.20125.83584.65704.9854
H104.01252.61832.08382.59171.10192.18154.67684.20124.56081.77612.52553.09292.5289
H114.01252.61832.08382.59171.10192.18154.67684.56084.20121.77612.52552.52893.0929
H125.69544.48033.34234.75802.15571.10106.58495.83585.83582.52552.52551.78711.7871
H134.81163.91562.63394.55552.16271.10025.80614.98544.65703.09292.52891.78711.7852
H144.81163.91562.63394.55552.16271.10025.80614.65704.98542.52893.09291.78711.7852

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 110.301 C1 C2 O4 125.993
C2 C1 H7 109.551 C2 C1 H8 109.695
C2 C1 H9 109.695 C2 O3 C5 114.234
O3 C2 O4 123.707 O3 C5 C6 106.923
O3 C5 H10 109.235 O3 C5 H11 109.235
C5 C6 H12 110.004 C5 C6 H13 110.601
C5 C6 H14 110.601 C6 C5 H10 112.006
C6 C5 H11 112.006 H7 C1 H8 110.189
H7 C1 H9 110.189 H8 C1 H9 107.493
H10 C5 H11 107.396 H12 C6 H13 108.561
H12 C6 H14 108.561 H13 C6 H14 108.450
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability