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

using model chemistry: CCD/TZVP

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/TZVP
 hartrees
Energy at 0K-306.994461
Energy at 298.15K 
HF Energy-305.981068
Nuclear repulsion energy244.280760
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/TZVP
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' 3211 3044 7.87      
2 A' 3163 2998 25.86      
3 A' 3102 2940 17.18      
4 A' 3098 2937 2.30      
5 A' 3083 2922 16.38      
6 A' 1871 1774 268.97      
7 A' 1558 1477 5.18      
8 A' 1531 1452 2.79      
9 A' 1508 1430 10.67      
10 A' 1478 1401 2.53      
11 A' 1446 1371 64.42      
12 A' 1432 1358 14.08      
13 A' 1323 1254 451.95      
14 A' 1174 1113 19.28      
15 A' 1126 1067 73.69      
16 A' 1043 989 8.77      
17 A' 974 923 6.18      
18 A' 898 851 13.35      
19 A' 660 625 8.58      
20 A' 441 418 0.78      
21 A' 382 362 8.51      
22 A' 201 191 5.08      
23 A" 3174 3009 45.10      
24 A" 3173 3008 1.73      
25 A" 3145 2981 5.74      
26 A" 1511 1432 5.49      
27 A" 1501 1423 7.51      
28 A" 1329 1259 1.51      
29 A" 1216 1152 3.84      
30 A" 1090 1033 3.63      
31 A" 834 791 0.01      
32 A" 603 572 7.48      
33 A" 264 250 1.04      
34 A" 148 140 4.96      
35 A" 73 69 0.19      
36 A" 44 42 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 26402.1 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 25029.2 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/TZVP
ABC
0.28309 0.07014 0.05804

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.307 0.025 0.000
C2 -0.903 -0.520 0.000
O3 0.000 0.477 0.000
O4 -0.606 -1.685 0.000
C5 1.376 0.067 0.000
C6 2.222 1.321 0.000
H7 -3.014 -0.799 0.000
H8 -2.458 0.649 0.881
H9 -2.458 0.649 -0.881
H10 1.566 -0.546 0.882
H11 1.566 -0.546 -0.882
H12 3.279 1.049 0.000
H13 2.019 1.923 -0.886
H14 2.019 1.923 0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50572.35032.41163.68254.71041.08641.09011.09014.01224.01225.67864.80614.8061
C21.50571.34541.20162.35353.62762.12902.13562.13562.62172.62174.46713.91113.9111
O32.35031.34542.24481.43542.37723.27292.61692.61692.06772.06773.32862.63712.6371
O42.41161.20162.24482.64504.12732.56553.10673.10672.60572.60574.75054.54904.5490
C53.68252.35351.43542.64501.51314.47433.97653.97651.09101.09102.14172.15512.1551
C64.71043.62762.37724.12731.51315.64914.80964.80962.16732.16731.09141.09031.0903
H71.08642.12903.27292.56554.47435.64911.78401.78404.67054.67056.55885.79045.7904
H81.09012.13562.61693.10673.97654.80961.78401.76284.19724.55265.81814.97924.6549
H91.09012.13562.61693.10673.97654.80961.78401.76284.55264.19725.81814.65494.9792
H104.01222.62172.06772.60571.09102.16734.67054.19724.55261.76422.50193.07102.5107
H114.01222.62172.06772.60571.09102.16734.67054.55264.19721.76422.50192.51073.0710
H125.67864.46713.32864.75052.14171.09146.55885.81815.81812.50192.50191.77111.7711
H134.80613.91112.63714.54902.15511.09035.79044.97924.65493.07102.51071.77111.7725
H144.80613.91112.63714.54902.15511.09035.79044.65494.97922.51073.07101.77111.7725

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 110.918 C1 C2 O4 125.573
C2 C1 H7 109.371 C2 C1 H8 109.676
C2 C1 H9 109.676 C2 O3 C5 115.588
O3 C2 O4 123.509 O3 C5 C6 107.428
O3 C5 H10 109.095 O3 C5 H11 109.095
C5 C6 H12 109.570 C5 C6 H13 110.696
C5 C6 H14 110.696 C6 C5 H10 111.635
C6 C5 H11 111.635 H7 C1 H8 110.096
H7 C1 H9 110.096 H8 C1 H9 107.906
H10 C5 H11 107.907 H12 C6 H13 108.537
H12 C6 H14 108.537 H13 C6 H14 108.746
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability