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

using model chemistry: B1B95/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31+G**
 hartrees
Energy at 0K-307.587760
Energy at 298.15K 
HF Energy-307.587760
Nuclear repulsion energy244.322663
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 B1B95/6-31+G**
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' 3216 3076 4.83 62.13 0.69 0.82
2 A' 3164 3027 20.60 75.39 0.71 0.83
3 A' 3093 2959 5.20 97.61 0.00 0.01
4 A' 3091 2957 13.55 150.18 0.05 0.09
5 A' 3079 2946 17.46 140.37 0.01 0.01
6 A' 1841 1761 295.15 7.51 0.26 0.42
7 A' 1523 1457 6.55 1.60 0.73 0.84
8 A' 1503 1438 3.41 12.51 0.74 0.85
9 A' 1474 1410 14.79 8.61 0.68 0.81
10 A' 1439 1377 8.03 3.42 0.71 0.83
11 A' 1410 1349 104.81 1.18 0.74 0.85
12 A' 1389 1328 12.63 1.85 0.75 0.86
13 A' 1303 1247 404.62 0.81 0.44 0.61
14 A' 1146 1096 14.67 7.25 0.14 0.24
15 A' 1102 1054 88.04 2.68 0.75 0.86
16 A' 1017 973 6.46 1.07 0.18 0.31
17 A' 970 928 5.00 2.56 0.20 0.33
18 A' 875 837 8.36 7.27 0.29 0.44
19 A' 645 617 6.74 7.61 0.27 0.43
20 A' 427 409 0.95 0.31 0.70 0.82
21 A' 371 355 9.75 2.79 0.25 0.39
22 A' 195 186 5.89 0.30 0.61 0.76
23 A" 3171 3034 32.76 29.30 0.75 0.86
24 A" 3171 3033 1.69 51.16 0.75 0.86
25 A" 3137 3001 6.77 83.46 0.75 0.86
26 A" 1491 1426 8.38 10.17 0.75 0.86
27 A" 1480 1416 10.67 7.98 0.75 0.86
28 A" 1302 1245 1.24 8.36 0.75 0.86
29 A" 1180 1129 4.24 0.55 0.75 0.86
30 A" 1064 1018 6.63 0.08 0.75 0.86
31 A" 811 776 0.79 0.31 0.75 0.86
32 A" 610 584 5.07 0.99 0.75 0.86
33 A" 266 254 1.07 0.02 0.75 0.86
34 A" 157 150 5.22 0.02 0.75 0.86
35 A" 72 69 0.30 0.37 0.75 0.86
36 A" 35 33 0.44 0.14 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 26108.9 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 24975.8 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 B1B95/6-31+G**
ABC
0.28344 0.07021 0.05810

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.306 0.030 0.000
C2 -0.907 -0.511 0.000
O3 0.000 0.480 0.000
O4 -0.607 -1.682 0.000
C5 1.375 0.064 0.000
C6 2.228 1.308 0.000
H7 -3.013 -0.795 0.000
H8 -2.463 0.657 0.879
H9 -2.463 0.657 -0.879
H10 1.552 -0.557 0.881
H11 1.552 -0.557 -0.881
H12 3.284 1.031 0.000
H13 2.033 1.915 -0.885
H14 2.033 1.915 0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.49942.34892.41193.68094.70961.08671.09111.09113.99993.99995.67794.81244.8124
C21.49941.34301.20902.35383.62402.12472.13452.13452.61232.61234.46533.91333.9133
O32.34891.34302.24491.43652.37653.27122.62092.62092.06342.06343.32952.64162.6416
O42.41191.20902.24492.64164.11962.56443.11243.11242.58862.58864.74274.54894.5489
C53.68092.35381.43652.64161.50734.47133.98163.98161.09221.09222.13902.15462.1546
C64.70963.62402.37654.11961.50735.64644.81604.81602.17002.17001.09181.09121.0912
H71.08672.12473.27122.56444.47135.64641.78411.78414.65484.65486.55575.79555.7955
H81.09112.13452.62093.11243.98164.81601.78411.75884.19384.54825.82514.99074.6684
H91.09112.13452.62093.11243.98164.81601.78411.75884.54824.19385.82514.66844.9907
H103.99992.61232.06342.58861.09222.17004.65484.19384.54821.76162.50903.07602.5187
H113.99992.61232.06342.58861.09222.17004.65484.54824.19381.76162.50902.51873.0760
H125.67794.46533.32954.74272.13901.09186.55575.82515.82512.50902.50901.76931.7693
H134.81243.91332.64164.54892.15461.09125.79554.99074.66843.07602.51871.76931.7702
H144.81243.91332.64164.54892.15461.09125.79554.66844.99072.51873.07601.76931.7702

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 111.335 C1 C2 O4 125.544
C2 C1 H7 109.447 C2 C1 H8 109.967
C2 C1 H9 109.967 C2 O3 C5 115.699
O3 C2 O4 123.121 O3 C5 C6 107.640
O3 C5 H10 108.605 O3 C5 H11 108.605
C5 C6 H12 109.733 C5 C6 H13 111.010
C5 C6 H14 111.010 C6 C5 H10 112.197
C6 C5 H11 112.197 H7 C1 H8 110.014
H7 C1 H9 110.014 H8 C1 H9 107.410
H10 C5 H11 107.497 H12 C6 H13 108.294
H12 C6 H14 108.294 H13 C6 H14 108.414
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.554      
2 C 0.476      
3 O -0.301      
4 O -0.459      
5 C 0.021      
6 C -0.604      
7 H 0.192      
8 H 0.189      
9 H 0.189      
10 H 0.170      
11 H 0.170      
12 H 0.165      
13 H 0.173      
14 H 0.173      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.310 2.088 0.000 2.110
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.209 -1.088 0.000
y -1.088 -43.303 0.000
z 0.000 0.000 -35.664
Traceless
 xyz
x 9.274 -1.088 0.000
y -1.088 -10.366 0.000
z 0.000 0.000 1.092
Polar
3z2-r22.184
x2-y213.094
xy-1.088
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.271 0.489 0.000
y 0.489 8.359 0.000
z 0.000 0.000 6.353


<r2> (average value of r2) Å2
<r2> 200.199
(<r2>)1/2 14.149