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

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/6-31G*
 hartrees
Energy at 0K-307.382865
Energy at 298.15K 
HF Energy-307.086678
Nuclear repulsion energy243.203093
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=FULL/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' 3218 3052 7.09 63.41 0.69 0.81
2 A' 3171 3007 23.39 69.70 0.73 0.84
3 A' 3108 2948 16.76 66.35 0.12 0.22
4 A' 3104 2944 1.38 123.74 0.01 0.02
5 A' 3094 2934 15.20 101.53 0.01 0.02
6 A' 1826 1731 209.79 3.55 0.38 0.55
7 A' 1568 1487 4.52 0.94 0.73 0.84
8 A' 1548 1468 2.51 23.40 0.75 0.86
9 A' 1522 1444 12.93 14.97 0.73 0.85
10 A' 1471 1396 5.11 5.87 0.74 0.85
11 A' 1447 1372 49.57 2.55 0.74 0.85
12 A' 1426 1352 8.19 3.18 0.63 0.77
13 A' 1302 1235 413.93 0.36 0.23 0.37
14 A' 1164 1104 14.36 6.78 0.17 0.30
15 A' 1098 1041 102.84 3.09 0.71 0.83
16 A' 1036 982 5.79 1.56 0.27 0.42
17 A' 963 913 6.79 1.92 0.24 0.39
18 A' 875 830 10.06 10.45 0.31 0.47
19 A' 643 610 6.92 7.99 0.33 0.49
20 A' 432 409 0.75 0.41 0.70 0.82
21 A' 372 353 9.72 2.80 0.32 0.48
22 A' 196 186 5.03 0.27 0.64 0.78
23 A" 3182 3017 37.14 19.45 0.75 0.86
24 A" 3175 3011 5.51 56.35 0.75 0.86
25 A" 3152 2989 7.72 82.70 0.75 0.86
26 A" 1538 1458 5.41 19.47 0.75 0.86
27 A" 1526 1447 8.02 16.68 0.75 0.86
28 A" 1321 1253 0.45 11.78 0.75 0.86
29 A" 1210 1148 4.54 1.88 0.75 0.86
30 A" 1090 1033 6.66 0.85 0.75 0.86
31 A" 829 786 0.48 0.19 0.75 0.86
32 A" 607 576 5.91 1.43 0.75 0.86
33 A" 274 259 1.03 0.01 0.75 0.86
34 A" 156 148 4.35 0.01 0.75 0.86
35 A" 69 65 0.00 0.37 0.75 0.86
36 A" 56 53 0.87 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26381.5 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 25020.2 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 B2PLYP=FULL/6-31G*
ABC
0.27933 0.06973 0.05760

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.312 0.031 0.000
C2 -0.908 -0.520 0.000
O3 0.000 0.484 0.000
O4 -0.609 -1.697 0.000
C5 1.384 0.066 0.000
C6 2.229 1.321 0.000
H7 -3.023 -0.793 0.000
H8 -2.467 0.658 0.881
H9 -2.467 0.658 -0.881
H10 1.565 -0.554 0.882
H11 1.565 -0.554 -0.882
H12 3.290 1.055 0.000
H13 2.025 1.926 -0.886
H14 2.025 1.926 0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50772.35582.42563.69594.72101.08851.09251.09254.01894.01895.69474.81514.8151
C21.50771.35381.21432.36583.63802.13232.14332.14332.62632.62634.48403.92083.9208
O32.35581.35382.26421.44582.38153.28172.62562.62562.07472.07473.33922.63922.6392
O42.42561.21432.26422.66054.14312.57743.12623.12622.61022.61024.77264.56624.5662
C53.69592.36581.44582.66051.51374.48983.99493.99491.09261.09262.14772.15822.1582
C64.72103.63802.38154.14311.51375.66204.82454.82452.17552.17551.09331.09221.0922
H71.08852.13233.28172.57744.48985.66201.78621.78624.67854.67856.57805.80195.8019
H81.09252.14332.62563.12623.99494.82451.78621.76204.21074.56485.83784.99114.6679
H91.09252.14332.62563.12623.99494.82451.78621.76204.56484.21075.83784.66794.9911
H104.01892.62632.07472.61021.09262.17554.67854.21074.56481.76342.51793.07982.5220
H114.01892.62632.07472.61021.09262.17554.67854.56484.21071.76342.51792.52203.0798
H125.69474.48403.33924.77262.14771.09336.57805.83785.83782.51792.51791.77311.7731
H134.81513.92082.63924.56622.15821.09225.80194.99114.66793.07982.52201.77311.7720
H144.81513.92082.63924.56622.15821.09225.80194.66794.99112.52203.07981.77311.7720

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 110.714 C1 C2 O4 125.684
C2 C1 H7 109.368 C2 C1 H8 110.008
C2 C1 H9 110.008 C2 O3 C5 115.320
O3 C2 O4 123.602 O3 C5 C6 107.140
O3 C5 H10 108.843 O3 C5 H11 108.843
C5 C6 H12 109.888 C5 C6 H13 110.789
C5 C6 H14 110.789 C6 C5 H10 112.164
C6 C5 H11 112.164 H7 C1 H8 109.971
H7 C1 H9 109.971 H8 C1 H9 107.495
H10 C5 H11 107.609 H12 C6 H13 108.439
H12 C6 H14 108.439 H13 C6 H14 108.424
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability