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

using model chemistry: PM6

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM6
 hartrees
Energy at 0K 
Energy at 298.15K-0.166329
HF Energy-0.166329
Nuclear repulsion energy161.803722
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 PM6
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' 2790 2964 36.89      
2 A' 2784 2957 87.72      
3 A' 2723 2893 26.34      
4 A' 2697 2866 62.53      
5 A' 2688 2856 119.61      
6 A' 1818 1931 501.02      
7 A' 1329 1412 38.27      
8 A' 1314 1395 93.69      
9 A' 1313 1395 127.81      
10 A' 1286 1366 43.63      
11 A' 1261 1340 378.59      
12 A' 1248 1326 88.86      
13 A' 1208 1283 45.72      
14 A' 1174 1248 18.86      
15 A' 1115 1185 276.11      
16 A' 1041 1106 22.61      
17 A' 983 1044 0.24      
18 A' 880 935 0.09      
19 A' 606 643 18.19      
20 A' 381 405 2.16      
21 A' 343 364 8.84      
22 A' 164 174 5.88      
23 A" 2696 2864 127.48      
24 A" 2682 2850 125.03      
25 A" 2658 2824 10.64      
26 A" 1237 1315 46.10      
27 A" 1218 1294 72.97      
28 A" 1141 1213 4.32      
29 A" 1082 1150 16.44      
30 A" 1030 1094 98.34      
31 A" 827 879 18.66      
32 A" 547 581 11.56      
33 A" 158 168 11.74      
34 A" 81 86 1.27      
35 A" 29i 31i 0.43      
36 A" 60i 64i 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 23206.0 cm-1
Scaled (by 1.0624) Zero Point Vibrational Energy (zpe) 24654.1 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 PM6
ABC
0.27029 0.07030 0.05761

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM6

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.288 -0.016 0.000
C2 -0.908 -0.576 0.000
O3 0.000 0.456 0.000
O4 -0.555 -1.733 0.000
C5 1.424 0.089 0.000
C6 2.141 1.421 0.000
H7 -3.039 -0.821 0.000
H8 -2.466 0.618 0.883
H9 -2.466 0.618 -0.883
H10 1.613 -0.517 0.903
H11 1.613 -0.517 -0.903
H12 3.229 1.286 0.000
H13 1.873 2.020 -0.881
H14 1.873 2.020 0.881

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.48892.33592.43903.71324.65621.10111.10111.10114.03554.03555.66854.71514.7151
C21.48891.37471.20922.42523.64522.14452.15202.15202.67912.67914.53733.90533.9053
O32.33591.37472.25781.47042.34863.29612.62422.62422.08892.08893.33422.59442.5944
O42.43901.20922.25782.68994.14932.64543.15513.15512.64522.64524.84114.55594.5559
C53.71322.42521.47042.68991.51294.55454.02364.02361.10341.10342.16622.16982.1698
C64.65623.64522.34864.14931.51295.64434.75914.75912.20182.20181.09631.09881.0988
H71.10112.14453.29612.64544.55455.64431.78271.78274.74874.74876.61265.74215.7421
H81.10112.15202.62423.15514.02364.75911.78271.76534.23434.59525.80164.88884.5597
H91.10112.15202.62423.15514.02364.75911.78271.76534.59524.23435.80164.55974.8888
H104.03552.67912.08892.64521.10342.20184.74874.23434.59521.80542.58383.11212.5503
H114.03552.67912.08892.64521.10342.20184.74874.59524.23431.80542.58382.55033.1121
H125.66854.53733.33424.84112.16621.09636.61265.80165.80162.58382.58381.77611.7761
H134.71513.90532.59444.55592.16981.09885.74214.88884.55973.11212.55031.77611.7619
H144.71513.90532.59444.55592.16981.09885.74214.55974.88882.55033.11211.77611.7619

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 109.252 C1 C2 O4 129.076
C2 C1 H7 110.898 C2 C1 H8 111.498
C2 C1 H9 111.498 C2 O3 C5 116.910
O3 C2 O4 121.672 O3 C5 C6 103.852
O3 C5 H10 107.655 O3 C5 H11 107.655
C5 C6 H12 111.241 C5 C6 H13 111.372
C5 C6 H14 111.372 C6 C5 H10 113.691
C6 C5 H11 113.691 H7 C1 H8 108.095
H7 C1 H9 108.095 H8 C1 H9 106.566
H10 C5 H11 109.787 H12 C6 H13 108.027
H12 C6 H14 108.027 H13 C6 H14 106.599
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability