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

using model chemistry: B2PLYP=FULLultrafine/6-311+G(3df,2p)

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=FULLultrafine/6-311+G(3df,2p)
 hartrees
Energy at 0K-307.611875
Energy at 298.15K 
HF Energy-307.200210
Nuclear repulsion energy244.023704
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=FULLultrafine/6-311+G(3df,2p)
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' 3186 3186 5.73 54.73 0.68 0.81
2 A' 3136 3136 20.96 64.41 0.70 0.82
3 A' 3077 3077 16.83 15.51 0.25 0.40
4 A' 3076 3076 0.17 247.61 0.01 0.02
5 A' 3062 3062 15.55 154.92 0.01 0.01
6 A' 1787 1787 260.32 8.77 0.26 0.41
7 A' 1536 1536 6.73 1.05 0.72 0.83
8 A' 1515 1515 3.07 6.88 0.75 0.85
9 A' 1488 1488 15.60 5.78 0.62 0.76
10 A' 1439 1439 4.52 0.92 0.74 0.85
11 A' 1418 1418 40.33 0.10 0.72 0.84
12 A' 1403 1403 13.94 0.81 0.51 0.68
13 A' 1276 1276 411.65 1.25 0.65 0.79
14 A' 1146 1146 9.41 8.11 0.10 0.19
15 A' 1082 1082 118.51 2.04 0.74 0.85
16 A' 1021 1021 6.80 1.74 0.17 0.30
17 A' 955 955 7.67 2.07 0.14 0.25
18 A' 865 865 10.48 8.07 0.19 0.32
19 A' 642 642 5.79 7.97 0.21 0.34
20 A' 432 432 0.87 0.30 0.69 0.81
21 A' 371 371 8.55 3.32 0.22 0.36
22 A' 195 195 5.61 0.38 0.55 0.71
23 A" 3146 3146 33.46 14.27 0.75 0.86
24 A" 3143 3143 3.96 49.46 0.75 0.86
25 A" 3117 3117 3.20 78.27 0.75 0.86
26 A" 1503 1503 6.82 5.07 0.75 0.86
27 A" 1495 1495 8.14 4.19 0.75 0.86
28 A" 1309 1309 1.11 3.69 0.75 0.86
29 A" 1190 1190 3.44 0.39 0.75 0.86
30 A" 1074 1074 5.22 0.05 0.75 0.86
31 A" 819 819 0.59 0.21 0.75 0.86
32 A" 613 613 5.10 0.36 0.75 0.86
33 A" 268 268 0.97 0.01 0.75 0.86
34 A" 154 154 4.83 0.02 0.75 0.86
35 A" 71 71 0.30 0.22 0.75 0.86
36 A" 49 49 0.35 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26028.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 26028.8 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=FULLultrafine/6-311+G(3df,2p)
ABC
0.28261 0.06992 0.05785

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.307 0.027 0.000
C2 -0.907 -0.520 0.000
O3 0.000 0.476 0.000
O4 -0.611 -1.689 0.000
C5 1.383 0.069 0.000
C6 2.225 1.322 0.000
H7 -3.016 -0.793 0.000
H8 -2.460 0.652 0.877
H9 -2.460 0.652 -0.877
H10 1.565 -0.547 0.879
H11 1.565 -0.547 -0.879
H12 3.280 1.055 0.000
H13 2.024 1.925 -0.883
H14 2.024 1.925 0.883

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50252.35012.41243.69044.71281.08361.08791.08794.01154.01155.68084.81004.8100
C21.50251.34701.20632.36483.63302.12632.13392.13392.62392.62394.47363.91733.9173
O32.35011.34702.24971.44222.38003.27182.61772.61772.06602.06603.33092.64082.6408
O42.41241.20632.24972.65844.13592.56653.10943.10942.61002.61004.76134.55874.5587
C53.69042.36481.44222.65841.50934.48273.98523.98521.08841.08842.13792.15292.1529
C64.71283.63302.38004.13591.50935.65094.81304.81302.16792.16791.08871.08781.0878
H71.08362.12633.27182.56654.48275.65091.77891.77894.67084.67086.56155.79335.7933
H81.08792.13392.61773.10943.98524.81301.77891.75414.19984.55225.82094.98224.6611
H91.08792.13392.61773.10943.98524.81301.77891.75414.55224.19985.82094.66114.9822
H104.01152.62392.06602.61001.08842.16794.67084.19984.55221.75822.50613.06992.5140
H114.01152.62392.06602.61001.08842.16794.67084.55224.19981.75822.50612.51403.0699
H125.68084.47363.33094.76132.13791.08876.56155.82095.82092.50612.50611.76491.7649
H134.81003.91732.64084.55872.15291.08785.79334.98224.66113.06992.51401.76491.7654
H144.81003.91732.64084.55872.15291.08785.79334.66114.98222.51403.06991.76491.7654

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 111.007 C1 C2 O4 125.536
C2 C1 H7 109.545 C2 C1 H8 109.893
C2 C1 H9 109.893 C2 O3 C5 115.920
O3 C2 O4 123.457 O3 C5 C6 107.466
O3 C5 H10 108.652 O3 C5 H11 108.652
C5 C6 H12 109.693 C5 C6 H13 110.943
C5 C6 H14 110.943 C6 C5 H10 112.119
C6 C5 H11 112.119 H7 C1 H8 110.016
H7 C1 H9 110.016 H8 C1 H9 107.453
H10 C5 H11 107.739 H12 C6 H13 108.356
H12 C6 H14 108.356 H13 C6 H14 108.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability