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

using model chemistry: MP2=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-306.985979
Energy at 298.15K 
HF Energy-305.941880
Nuclear repulsion energy244.012483
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 MP2=FULL/6-311G*
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' 3228 3057 5.64 59.84 0.72 0.83
2 A' 3185 3016 19.73 68.54 0.73 0.85
3 A' 3111 2947 17.29 74.43 0.11 0.20
4 A' 3105 2941 1.56 126.71 0.01 0.01
5 A' 3094 2930 14.66 114.20 0.01 0.02
6 A' 1825 1729 202.95 5.44 0.38 0.55
7 A' 1562 1480 6.88 1.75 0.71 0.83
8 A' 1539 1457 4.03 16.51 0.74 0.85
9 A' 1513 1433 15.35 10.57 0.71 0.83
10 A' 1465 1388 7.04 3.26 0.56 0.72
11 A' 1439 1363 73.73 1.04 0.71 0.83
12 A' 1422 1347 19.93 1.81 0.75 0.86
13 A' 1300 1231 414.89 0.28 0.67 0.80
14 A' 1168 1106 13.28 7.44 0.15 0.26
15 A' 1113 1054 92.47 3.04 0.72 0.84
16 A' 1035 980 10.77 1.77 0.22 0.36
17 A' 971 920 8.22 2.22 0.21 0.34
18 A' 885 838 12.13 8.18 0.29 0.45
19 A' 652 617 7.48 7.85 0.34 0.51
20 A' 437 414 0.59 0.32 0.70 0.82
21 A' 379 359 9.23 2.84 0.32 0.49
22 A' 201 191 4.53 0.32 0.64 0.78
23 A" 3196 3027 30.83 22.54 0.75 0.86
24 A" 3190 3022 4.56 54.37 0.75 0.86
25 A" 3163 2996 8.95 79.15 0.75 0.86
26 A" 1527 1446 9.04 11.89 0.75 0.86
27 A" 1514 1434 11.40 10.83 0.75 0.86
28 A" 1331 1261 0.88 8.91 0.75 0.86
29 A" 1212 1148 4.25 0.87 0.75 0.86
30 A" 1084 1027 5.23 0.25 0.75 0.86
31 A" 829 785 0.58 0.19 0.75 0.86
32 A" 610 578 4.33 1.18 0.75 0.86
33 A" 278 263 1.01 0.03 0.75 0.86
34 A" 156 148 4.62 0.01 0.75 0.86
35 A" 79 75 0.07 0.30 0.75 0.86
36 A" 51 48 0.82 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26423.4 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 25025.6 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 MP2=FULL/6-311G*
ABC
0.28057 0.07039 0.05810

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.305 0.040 0.000
C2 -0.906 -0.514 0.000
O3 0.000 0.489 0.000
O4 -0.607 -1.686 0.000
C5 1.374 0.057 0.000
C6 2.227 1.303 0.000
H7 -3.018 -0.781 0.000
H8 -2.455 0.667 0.880
H9 -2.455 0.667 -0.880
H10 1.550 -0.563 0.882
H11 1.550 -0.563 -0.882
H12 3.285 1.031 0.000
H13 2.025 1.907 -0.886
H14 2.025 1.907 0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50492.34792.42133.67864.70471.08761.09121.09124.00034.00035.67724.79794.7979
C21.50491.35131.20952.34993.62182.12932.13812.13812.60992.60994.46673.90373.9037
O32.34791.35132.25801.44032.37153.27432.61422.61422.07072.07073.32982.62652.6265
O42.42131.20952.25802.63834.11922.57563.11923.11922.58692.58694.74694.54164.5416
C53.67862.34991.44032.63831.51064.47123.97603.97601.09241.09242.14552.15272.1527
C64.70473.62182.37154.11921.51065.64434.80664.80662.17252.17251.09241.09101.0910
H71.08762.12933.27432.57564.47125.64431.78571.78574.65784.65786.55875.78345.7834
H81.09122.13812.61423.11923.97604.80661.78571.76034.19014.54565.81894.97294.6489
H91.09122.13812.61423.11923.97604.80661.78571.76034.54564.19015.81894.64894.9729
H104.00032.60992.07072.58691.09242.17254.65784.19014.54561.76422.51613.07482.5159
H114.00032.60992.07072.58691.09242.17254.65784.54564.19011.76422.51612.51593.0748
H125.67724.46673.32984.74692.14551.09246.55875.81895.81892.51612.51611.77191.7719
H134.79793.90372.62654.54162.15271.09105.78344.97294.64893.07482.51591.77191.7711
H144.79793.90372.62654.54162.15271.09105.78344.64894.97292.51593.07481.77191.7711

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 110.470 C1 C2 O4 125.910
C2 C1 H7 109.385 C2 C1 H8 109.869
C2 C1 H9 109.869 C2 O3 C5 114.620
O3 C2 O4 123.620 O3 C5 C6 106.937
O3 C5 H10 108.918 O3 C5 H11 108.918
C5 C6 H12 109.982 C5 C6 H13 110.640
C5 C6 H14 110.640 C6 C5 H10 112.147
C6 C5 H11 112.147 H7 C1 H8 110.084
H7 C1 H9 110.084 H8 C1 H9 107.531
H10 C5 H11 107.701 H12 C6 H13 108.493
H12 C6 H14 108.493 H13 C6 H14 108.528
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability