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

using model chemistry: CCD/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 CCD/6-31G**
 hartrees
Energy at 0K-306.846875
Energy at 298.15K 
HF Energy-305.887419
Nuclear repulsion energy243.823385
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 CCD/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' 3262 3058 7.81      
2 A' 3216 3016 23.80      
3 A' 3142 2946 19.12      
4 A' 3141 2945 0.23      
5 A' 3129 2933 15.39      
6 A' 1898 1780 225.15      
7 A' 1585 1486 2.94      
8 A' 1561 1463 2.00      
9 A' 1537 1441 9.95      
10 A' 1494 1401 3.98      
11 A' 1467 1376 75.60      
12 A' 1443 1353 10.02      
13 A' 1343 1259 429.51      
14 A' 1182 1109 18.45      
15 A' 1134 1063 68.44      
16 A' 1052 986 7.28      
17 A' 983 921 6.04      
18 A' 898 842 11.57      
19 A' 657 616 10.35      
20 A' 437 410 0.78      
21 A' 380 357 9.78      
22 A' 201 188 5.01      
23 A" 3226 3025 35.62      
24 A" 3223 3022 5.93      
25 A" 3190 2991 12.39      
26 A" 1549 1453 3.98      
27 A" 1539 1443 6.30      
28 A" 1335 1252 0.72      
29 A" 1226 1150 4.78      
30 A" 1102 1033 5.41      
31 A" 836 784 0.05      
32 A" 613 575 8.11      
33 A" 276 259 1.05      
34 A" 155 145 4.63      
35 A" 86 80 0.14      
36 A" 70 66 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 26782.5 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 25111.3 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 CCD/6-31G**
ABC
0.28096 0.07007 0.05789

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.309 0.027 0.000
C2 -0.905 -0.519 0.000
O3 0.000 0.484 0.000
O4 -0.604 -1.691 0.000
C5 1.378 0.065 0.000
C6 2.224 1.320 0.000
H7 -3.015 -0.798 0.000
H8 -2.460 0.650 0.880
H9 -2.460 0.650 -0.880
H10 1.563 -0.551 0.880
H11 1.563 -0.551 -0.880
H12 3.281 1.055 0.000
H13 2.016 1.921 -0.884
H14 2.016 1.921 0.884

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50672.35402.42023.68754.71361.08521.08881.08884.01314.01315.68354.80404.8040
C21.50671.35111.20982.35643.62912.12842.13542.13542.62052.62054.47173.90763.9076
O32.35401.35112.25781.44072.37563.27602.61762.61762.07152.07153.32992.62902.6290
O42.42021.20982.25782.64824.13102.57093.11443.11442.60232.60234.75754.54954.5495
C53.68752.35641.44072.64821.51374.47693.98083.98081.09011.09012.14482.15302.1530
C64.71363.62912.37564.13101.51375.65044.81214.81212.17112.17111.08981.08881.0888
H71.08522.12843.27602.57094.47695.65041.78281.78284.66864.66866.56245.78665.7866
H81.08882.13542.61763.11443.98084.81211.78281.75954.19884.55275.82154.97594.6529
H91.08882.13542.61763.11443.98084.81211.78281.75954.55274.19885.82154.65294.9759
H104.01312.62052.07152.60231.09012.17114.66864.19884.55271.76002.51083.07092.5138
H114.01312.62052.07152.60231.09012.17114.66864.55274.19881.76002.51082.51383.0709
H125.68354.47173.32994.75752.14481.08986.56245.82155.82152.51082.51081.76931.7693
H134.80403.90762.62904.54952.15301.08885.78664.97594.65293.07092.51381.76931.7678
H144.80403.90762.62904.54952.15301.08885.78664.65294.97592.51383.07091.76931.7678

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 110.792 C1 C2 O4 125.626
C2 C1 H7 109.327 C2 C1 H8 109.665
C2 C1 H9 109.665 C2 O3 C5 115.104
O3 C2 O4 123.582 O3 C5 C6 107.019
O3 C5 H10 109.094 O3 C5 H11 109.094
C5 C6 H12 109.863 C5 C6 H13 110.579
C5 C6 H14 110.579 C6 C5 H10 111.959
C6 C5 H11 111.959 H7 C1 H8 110.184
H7 C1 H9 110.184 H8 C1 H9 107.797
H10 C5 H11 107.664 H12 C6 H13 108.609
H12 C6 H14 108.609 H13 C6 H14 108.545
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability