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

using model chemistry: MP2=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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-306.833934
Energy at 298.15K 
HF Energy-305.886225
Nuclear repulsion energy243.741313
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3284 3068 5.27 56.96 0.72 0.84
2 A' 3243 3030 17.44 63.03 0.74 0.85
3 A' 3154 2948 3.41 81.36 0.00 0.00
4 A' 3151 2944 14.61 98.81 0.07 0.14
5 A' 3144 2938 12.86 94.67 0.01 0.03
6 A' 1836 1716 182.91 5.69 0.36 0.52
7 A' 1580 1476 3.72 0.80 0.75 0.86
8 A' 1561 1458 2.31 21.61 0.75 0.86
9 A' 1535 1434 11.17 14.23 0.74 0.85
10 A' 1483 1385 4.52 4.67 0.75 0.86
11 A' 1455 1359 60.89 2.21 0.75 0.86
12 A' 1432 1338 10.98 2.30 0.64 0.78
13 A' 1315 1229 412.74 0.25 0.69 0.82
14 A' 1175 1098 10.58 7.24 0.17 0.28
15 A' 1119 1046 86.84 3.17 0.68 0.81
16 A' 1044 976 9.33 1.64 0.24 0.39
17 A' 974 911 7.25 2.03 0.28 0.44
18 A' 883 826 12.38 10.06 0.28 0.44
19 A' 649 606 7.94 7.53 0.33 0.49
20 A' 435 406 0.61 0.36 0.72 0.84
21 A' 376 351 9.37 2.54 0.33 0.49
22 A' 199 186 4.84 0.28 0.63 0.77
23 A" 3254 3040 24.46 30.12 0.75 0.86
24 A" 3248 3035 4.03 51.27 0.75 0.86
25 A" 3210 2999 14.04 61.06 0.75 0.86
26 A" 1550 1448 4.80 17.98 0.75 0.86
27 A" 1539 1438 7.29 15.35 0.75 0.86
28 A" 1331 1243 0.49 10.54 0.75 0.86
29 A" 1220 1140 4.48 1.91 0.75 0.86
30 A" 1093 1021 5.19 0.80 0.75 0.86
31 A" 836 781 0.27 0.17 0.75 0.86
32 A" 607 567 5.87 1.38 0.75 0.86
33 A" 283 264 1.01 0.01 0.75 0.86
34 A" 158 148 4.45 0.01 0.75 0.86
35 A" 75 70 0.02 0.33 0.75 0.86
36 A" 63 59 0.75 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26745.2 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 24990.8 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/6-31G**
ABC
0.27931 0.07031 0.05798

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.306 0.040 0.000
C2 -0.908 -0.513 0.000
O3 0.000 0.494 0.000
O4 -0.607 -1.693 0.000
C5 1.377 0.058 0.000
C6 2.228 1.303 0.000
H7 -3.015 -0.779 0.000
H8 -2.454 0.663 0.878
H9 -2.454 0.663 -0.878
H10 1.552 -0.560 0.879
H11 1.552 -0.560 -0.879
H12 3.281 1.032 0.000
H13 2.025 1.904 -0.882
H14 2.025 1.904 0.882

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50312.35022.42733.68264.70641.08361.08691.08694.00234.00235.67444.79704.7970
C21.50311.35631.21802.35543.62422.12372.13172.13172.61332.61334.46533.90223.9022
O32.35021.35632.26981.44402.37013.27312.61182.61182.07202.07203.32492.62072.6207
O42.42731.21802.26982.64584.12462.57653.12053.12052.59182.59184.74764.54374.5437
C53.68262.35541.44402.64581.50834.47123.97633.97631.08881.08882.13892.14642.1464
C64.70643.62422.37014.12461.50835.64154.80614.80612.16822.16821.08801.08661.0866
H71.08362.12373.27312.57654.47125.64151.77951.77954.65664.65666.55185.77795.7779
H81.08692.13172.61183.12053.97634.80611.77951.75584.18894.54245.81364.96984.6477
H91.08692.13172.61183.12053.97634.80611.77951.75584.54244.18895.81364.64774.9698
H104.00232.61332.07202.59181.08882.16824.65664.18894.54241.75802.50903.06572.5092
H114.00232.61332.07202.59181.08882.16824.65664.54244.18891.75802.50902.50923.0657
H125.67444.46533.32494.74762.13891.08806.55185.81365.81362.50902.50901.76581.7658
H134.79703.90222.62074.54372.14641.08665.77794.96984.64773.06572.50921.76581.7647
H144.79703.90222.62074.54372.14641.08665.77794.64774.96982.50923.06571.76581.7647

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 110.452 C1 C2 O4 125.942
C2 C1 H7 109.308 C2 C1 H8 109.742
C2 C1 H9 109.742 C2 O3 C5 114.477
O3 C2 O4 123.606 O3 C5 C6 106.779
O3 C5 H10 108.972 O3 C5 H11 108.972
C5 C6 H12 109.887 C5 C6 H13 110.568
C5 C6 H14 110.568 C6 C5 H10 112.192
C6 C5 H11 112.192 H7 C1 H8 110.143
H7 C1 H9 110.143 H8 C1 H9 107.744
H10 C5 H11 107.663 H12 C6 H13 108.587
H12 C6 H14 108.587 H13 C6 H14 108.587
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability