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

using model chemistry: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-305.782649
Energy at 298.15K 
HF Energy-305.782649
Nuclear repulsion energy242.129225
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 HF/LANL2DZ
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' 3364 3027 18.17 59.95 0.69 0.81
2 A' 3300 2970 61.93 55.36 0.69 0.82
3 A' 3270 2943 16.44 120.88 0.11 0.20
4 A' 3235 2912 8.24 148.35 0.01 0.02
5 A' 3213 2892 35.27 134.61 0.02 0.04
6 A' 1858 1672 329.29 4.59 0.57 0.72
7 A' 1671 1504 8.10 4.99 0.66 0.80
8 A' 1649 1484 6.38 17.19 0.73 0.84
9 A' 1622 1460 28.83 14.14 0.74 0.85
10 A' 1580 1422 5.89 1.75 0.27 0.42
11 A' 1571 1414 53.94 1.49 0.72 0.84
12 A' 1546 1391 0.92 2.71 0.66 0.79
13 A' 1403 1263 524.52 1.60 0.63 0.78
14 A' 1243 1119 14.23 12.06 0.19 0.32
15 A' 1182 1064 135.14 3.85 0.74 0.85
16 A' 1117 1005 10.71 5.99 0.42 0.59
17 A' 1014 912 18.98 2.73 0.66 0.80
18 A' 904 813 17.98 14.80 0.26 0.41
19 A' 673 605 15.73 9.71 0.33 0.50
20 A' 448 403 1.06 0.46 0.63 0.77
21 A' 381 342 13.41 3.03 0.35 0.51
22 A' 191 172 8.60 0.38 0.69 0.81
23 A" 3339 3005 74.11 8.63 0.75 0.86
24 A" 3321 2989 15.00 56.36 0.75 0.86
25 A" 3307 2976 11.47 84.52 0.75 0.86
26 A" 1634 1470 9.15 14.73 0.75 0.86
27 A" 1628 1465 13.64 14.68 0.75 0.86
28 A" 1416 1274 0.76 16.05 0.75 0.86
29 A" 1297 1167 9.36 1.79 0.75 0.86
30 A" 1202 1082 13.97 2.62 0.75 0.86
31 A" 896 807 0.46 0.18 0.75 0.86
32 A" 651 586 18.26 2.33 0.75 0.86
33 A" 266 240 2.32 0.02 0.75 0.86
34 A" 155 139 10.30 0.01 0.75 0.86
35 A" 100 90 0.13 0.14 0.75 0.86
36 A" 64 57 1.20 0.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 27855.2 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 25066.9 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 HF/LANL2DZ
ABC
0.27786 0.06829 0.05652

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.316 -0.061 0.000
C2 -0.904 -0.573 0.000
O3 0.000 0.433 0.000
O4 -0.576 -1.747 0.000
C5 1.430 0.135 0.000
C6 2.160 1.467 0.000
H7 -3.005 -0.890 0.000
H8 -2.478 0.556 0.874
H9 -2.478 0.556 -0.874
H10 1.656 -0.455 0.876
H11 1.656 -0.455 -0.876
H12 3.231 1.300 0.000
H13 1.901 2.045 -0.878
H14 1.901 2.045 0.878

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50122.36772.42233.75104.72911.07801.08191.08194.08594.08595.71154.79394.7939
C21.50121.35231.21892.43953.68082.12492.12442.12442.70832.70834.53983.93553.9355
O32.36771.35232.25401.46092.39463.28352.63012.63012.07312.07313.34572.64222.6422
O42.42231.21892.25402.75034.22002.57653.11183.11182.72292.72294.87584.61254.6125
C53.75102.43951.46092.75031.51854.55254.02654.02651.08031.08032.14492.15362.1536
C64.72913.68082.39464.22001.51855.67744.80624.80622.17182.17181.08451.08241.0824
H71.07802.12493.28352.57654.55255.67741.76961.76964.76264.76266.61005.78355.7835
H81.08192.12442.63013.11184.02654.80621.76961.74724.25544.60115.82334.94504.6245
H91.08192.12442.63013.11184.02654.80621.76961.74724.60114.25545.82334.62454.9450
H104.08592.70832.07312.72291.08032.17184.76264.25544.60111.75252.51623.06372.5118
H114.08592.70832.07312.72291.08032.17184.76264.60114.25541.75252.51622.51183.0637
H125.71154.53983.34574.87582.14491.08456.61005.82335.82332.51622.51621.75961.7596
H134.79393.93552.64224.61252.15361.08245.78354.94504.62453.06372.51181.75961.7557
H144.79393.93552.64224.61252.15361.08245.78354.62454.94502.51183.06371.75961.7557

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 112.043 C1 C2 O4 125.562
C2 C1 H7 109.866 C2 C1 H8 109.591
C2 C1 H9 109.591 C2 O3 C5 120.207
O3 C2 O4 122.395 O3 C5 C6 106.955
O3 C5 H10 108.399 O3 C5 H11 108.399
C5 C6 H12 109.854 C5 C6 H13 110.674
C5 C6 H14 110.674 C6 C5 H10 112.271
C6 C5 H11 112.271 H7 C1 H8 110.032
H7 C1 H9 110.032 H8 C1 H9 107.696
H10 C5 H11 108.406 H12 C6 H13 108.590
H12 C6 H14 108.590 H13 C6 H14 108.398
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.622      
2 C 0.579      
3 O -0.515      
4 O -0.429      
5 C -0.030      
6 C -0.541      
7 H 0.213      
8 H 0.211      
9 H 0.211      
10 H 0.190      
11 H 0.190      
12 H 0.169      
13 H 0.188      
14 H 0.188      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.298 2.391 0.000 2.409
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.100 -0.825 0.000
y -0.825 -45.848 0.000
z 0.000 0.000 -35.771
Traceless
 xyz
x 11.710 -0.825 0.000
y -0.825 -13.413 0.000
z 0.000 0.000 1.703
Polar
3z2-r23.407
x2-y216.748
xy-0.825
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.315 0.371 0.000
y 0.371 7.012 0.000
z 0.000 0.000 5.222


<r2> (average value of r2) Å2
<r2> 204.892
(<r2>)1/2 14.314