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

using model chemistry: MP3=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3=FULL/6-31+G**
 hartrees
Energy at 0K-306.883246
Energy at 298.15K 
HF Energy-305.894898
Nuclear repulsion energy244.006170
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 MP3=FULL/6-31+G**
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' 3274 3050 6.33      
2 A' 3225 3005 23.81      
3 A' 3159 2943 16.85      
4 A' 3153 2937 2.34      
5 A' 3138 2924 17.04      
6 A' 1880 1751 293.18      
7 A' 1578 1470 3.68      
8 A' 1553 1447 3.70      
9 A' 1531 1426 12.12      
10 A' 1491 1389 3.70      
11 A' 1465 1365 82.90      
12 A' 1442 1343 7.34      
13 A' 1342 1250 442.48      
14 A' 1180 1099 15.37      
15 A' 1134 1056 76.85      
16 A' 1052 980 7.69      
17 A' 986 918 6.82      
18 A' 898 837 12.51      
19 A' 657 612 9.59      
20 A' 441 411 0.94      
21 A' 380 354 9.20      
22 A' 200 186 5.94      
23 A" 3237 3016 36.27      
24 A" 3235 3014 4.59      
25 A" 3208 2989 6.17      
26 A" 1540 1434 6.53      
27 A" 1529 1425 8.33      
28 A" 1332 1241 1.29      
29 A" 1221 1137 4.16      
30 A" 1100 1024 4.17      
31 A" 835 778 0.05      
32 A" 619 577 7.46      
33 A" 270 252 1.11      
34 A" 152 142 5.63      
35 A" 73 68 0.10      
36 A" 58 54 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 26783.7 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 24951.7 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 MP3=FULL/6-31+G**
ABC
0.28210 0.07003 0.05791

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.308 0.021 0.000
C2 -0.905 -0.519 0.000
O3 0.000 0.479 0.000
O4 -0.604 -1.691 0.000
C5 1.381 0.069 0.000
C6 2.220 1.327 0.000
H7 -3.009 -0.805 0.000
H8 -2.460 0.643 0.879
H9 -2.460 0.643 -0.879
H10 1.565 -0.544 0.880
H11 1.565 -0.544 -0.880
H12 3.276 1.062 0.000
H13 2.013 1.926 -0.883
H14 2.013 1.926 0.883

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50342.35332.41563.68984.71271.08341.08721.08724.01184.01185.68014.80444.8044
C21.50341.34731.21012.36063.62932.12332.13072.13072.62212.62214.46963.90803.9080
O32.35331.34732.25251.44102.37623.27172.61752.61752.06632.06633.32712.63162.6316
O42.41561.21012.25252.65274.13282.56303.10873.10872.60652.60654.75704.55074.5507
C53.68982.36061.44102.65271.51204.47643.98233.98231.08791.08792.13902.15142.1514
C64.71273.62932.37624.13281.51205.64694.81084.81082.16862.16861.08831.08721.0872
H71.08342.12333.27172.56304.47645.64691.78051.78054.66504.66506.55625.78445.7844
H81.08722.13072.61753.10873.98234.81081.78051.75744.19634.55005.81784.97604.6536
H91.08722.13072.61753.10873.98234.81081.78051.75744.55004.19635.81784.65364.9760
H104.01182.62212.06632.60651.08792.16864.66504.19634.55001.76042.50613.06752.5099
H114.01182.62212.06632.60651.08792.16864.66504.55004.19631.76042.50612.50993.0675
H125.68014.46963.32714.75702.13901.08836.55625.81785.81782.50612.50611.76641.7664
H134.80443.90802.63164.55072.15141.08725.78444.97604.65363.06752.50991.76641.7666
H144.80443.90802.63164.55072.15141.08725.78444.65364.97602.50993.06751.76641.7666

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 111.159 C1 C2 O4 125.458
C2 C1 H7 109.257 C2 C1 H8 109.623
C2 C1 H9 109.623 C2 O3 C5 115.652
O3 C2 O4 123.383 O3 C5 C6 107.138
O3 C5 H10 108.789 O3 C5 H11 108.789
C5 C6 H12 109.618 C5 C6 H13 110.667
C5 C6 H14 110.667 C6 C5 H10 112.015
C6 C5 H11 112.015 H7 C1 H8 110.232
H7 C1 H9 110.232 H8 C1 H9 107.856
H10 C5 H11 108.013 H12 C6 H13 108.577
H12 C6 H14 108.577 H13 C6 H14 108.678
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability