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

using model chemistry: B2PLYP=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-307.410473
Energy at 298.15K 
HF Energy-307.098555
Nuclear repulsion energy243.349639
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 B2PLYP=FULL/6-31G**
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' 3225 3225 6.92 62.39 0.69 0.82
2 A' 3177 3177 22.54 69.33 0.73 0.84
3 A' 3106 3106 8.54 46.38 0.00 0.00
4 A' 3105 3105 10.76 148.30 0.05 0.10
5 A' 3095 3095 15.22 104.06 0.01 0.02
6 A' 1826 1826 208.95 3.59 0.38 0.55
7 A' 1557 1557 4.28 0.99 0.74 0.85
8 A' 1537 1537 2.20 22.46 0.75 0.86
9 A' 1509 1509 11.85 14.56 0.73 0.85
10 A' 1462 1462 4.54 5.32 0.74 0.85
11 A' 1435 1435 51.31 2.32 0.74 0.85
12 A' 1415 1415 11.86 2.97 0.62 0.76
13 A' 1298 1298 411.81 0.33 0.25 0.39
14 A' 1158 1158 14.05 6.79 0.16 0.28
15 A' 1096 1096 99.36 2.99 0.73 0.84
16 A' 1030 1030 6.34 1.51 0.25 0.40
17 A' 961 961 6.12 1.95 0.23 0.37
18 A' 873 873 9.97 10.27 0.31 0.47
19 A' 643 643 7.04 8.00 0.32 0.49
20 A' 431 431 0.76 0.39 0.70 0.82
21 A' 372 372 9.66 2.77 0.32 0.48
22 A' 196 196 5.03 0.28 0.64 0.78
23 A" 3186 3186 34.37 24.77 0.75 0.86
24 A" 3182 3182 5.41 54.89 0.75 0.86
25 A" 3152 3152 10.19 76.43 0.75 0.86
26 A" 1525 1525 4.85 18.66 0.75 0.86
27 A" 1515 1515 7.38 15.95 0.75 0.86
28 A" 1314 1314 0.56 11.00 0.75 0.86
29 A" 1204 1204 4.45 1.75 0.75 0.86
30 A" 1081 1081 6.30 0.69 0.75 0.86
31 A" 824 824 0.45 0.18 0.75 0.86
32 A" 604 604 5.91 1.38 0.75 0.86
33 A" 273 273 1.02 0.01 0.75 0.86
34 A" 156 156 4.30 0.01 0.75 0.86
35 A" 67 67 0.00 0.33 0.75 0.86
36 A" 56 56 0.87 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26322.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26322.9 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 B2PLYP=FULL/6-31G**
ABC
0.27966 0.06980 0.05766

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.311 0.033 0.000
C2 -0.909 -0.519 0.000
O3 0.000 0.485 0.000
O4 -0.610 -1.695 0.000
C5 1.382 0.064 0.000
C6 2.231 1.317 0.000
H7 -3.022 -0.789 0.000
H8 -2.464 0.659 0.879
H9 -2.464 0.659 -0.879
H10 1.563 -0.555 0.880
H11 1.563 -0.555 -0.880
H12 3.288 1.048 0.000
H13 2.028 1.921 -0.884
H14 2.028 1.921 0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50692.35502.42523.69384.71971.08631.09031.09034.01634.01635.69054.81444.8144
C21.50691.35391.21412.36423.63652.12992.14012.14012.62422.62424.47983.91943.9194
O32.35501.35392.26411.44512.38063.27902.62222.62222.07372.07373.33602.63802.6380
O42.42521.21412.26412.65814.14022.57633.12343.12342.60712.60714.76674.56314.5631
C53.69382.36421.44512.65811.51274.48583.99063.99061.09121.09122.14462.15602.1560
C64.71973.63652.38064.14021.51275.65844.82154.82152.17352.17351.09111.09021.0902
H71.08632.12993.27902.57634.48585.65841.78351.78354.67424.67426.57155.79895.7989
H81.09032.14012.62223.12343.99064.82151.78351.75864.20654.55965.83214.98864.6664
H91.09032.14012.62223.12343.99064.82151.78351.75864.55964.20655.83214.66644.9886
H104.01632.62422.07372.60711.09122.17354.67424.20654.55961.76032.51413.07612.5197
H114.01632.62422.07372.60711.09122.17354.67424.55964.20651.76032.51412.51973.0761
H125.69054.47983.33604.76672.14461.09116.57155.83215.83212.51412.51411.76971.7697
H134.81443.91942.63804.56312.15601.09025.79894.98864.66643.07612.51971.76971.7688
H144.81443.91942.63804.56312.15601.09025.79894.66644.98862.51973.07611.76971.7688

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 110.691 C1 C2 O4 125.723
C2 C1 H7 109.365 C2 C1 H8 109.930
C2 C1 H9 109.930 C2 O3 C5 115.230
O3 C2 O4 123.586 O3 C5 C6 107.168
O3 C5 H10 108.883 O3 C5 H11 108.883
C5 C6 H12 109.845 C5 C6 H13 110.801
C5 C6 H14 110.801 C6 C5 H10 112.156
C6 C5 H11 112.156 H7 C1 H8 110.045
H7 C1 H9 110.045 H8 C1 H9 107.506
H10 C5 H11 107.521 H12 C6 H13 108.446
H12 C6 H14 108.446 H13 C6 H14 108.432
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability