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

using model chemistry: HF/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-305.900177
Energy at 298.15K 
HF Energy-305.900177
Nuclear repulsion energy245.522489
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/cc-pVDZ
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' 3326 3020 11.04 70.79 0.69 0.82
2 A' 3266 2966 40.97 75.36 0.69 0.82
3 A' 3227 2930 16.57 119.76 0.12 0.21
4 A' 3207 2912 4.74 128.61 0.01 0.02
5 A' 3187 2894 24.52 110.06 0.01 0.03
6 A' 2006 1821 356.73 3.71 0.71 0.83
7 A' 1631 1481 3.66 2.75 0.75 0.85
8 A' 1598 1451 3.37 15.16 0.73 0.85
9 A' 1567 1423 21.99 7.67 0.74 0.85
10 A' 1558 1415 5.66 6.69 0.52 0.68
11 A' 1526 1385 148.12 1.60 0.75 0.85
12 A' 1498 1360 11.19 0.49 0.50 0.66
13 A' 1410 1280 483.84 0.72 0.75 0.85
14 A' 1234 1120 39.19 7.67 0.15 0.27
15 A' 1182 1073 89.38 3.53 0.59 0.74
16 A' 1094 993 4.26 2.61 0.25 0.40
17 A' 1028 934 4.85 2.10 0.37 0.54
18 A' 945 858 12.75 7.72 0.32 0.49
19 A' 691 628 12.98 7.56 0.31 0.47
20 A' 458 415 1.13 0.25 0.65 0.79
21 A' 397 361 11.48 2.30 0.30 0.46
22 A' 207 188 5.63 0.29 0.67 0.80
23 A" 3288 2985 65.34 2.72 0.75 0.86
24 A" 3282 2980 7.75 65.37 0.75 0.86
25 A" 3261 2961 1.22 119.76 0.75 0.86
26 A" 1580 1435 5.62 12.82 0.75 0.86
27 A" 1575 1430 7.06 12.07 0.75 0.86
28 A" 1402 1273 1.78 7.02 0.75 0.86
29 A" 1277 1160 5.98 0.55 0.75 0.86
30 A" 1164 1057 10.69 0.29 0.75 0.86
31 A" 870 790 0.08 0.15 0.75 0.86
32 A" 665 604 11.61 1.05 0.75 0.86
33 A" 289 262 1.11 0.01 0.75 0.86
34 A" 157 142 5.20 0.01 0.75 0.86
35 A" 99 90 0.16 0.06 0.75 0.86
36 A" 75 69 0.81 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 27612.2 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 25071.9 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/cc-pVDZ
ABC
0.28692 0.07054 0.05846

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.295 -0.007 0.000
C2 -0.889 -0.535 0.000
O3 0.000 0.450 0.000
O4 -0.592 -1.684 0.000
C5 1.378 0.088 0.000
C6 2.186 1.365 0.000
H7 -2.996 -0.837 0.000
H8 -2.449 0.618 0.880
H9 -2.449 0.618 -0.880
H10 1.586 -0.520 0.880
H11 1.586 -0.520 -0.880
H12 3.252 1.129 0.000
H13 1.964 1.964 -0.885
H14 1.964 1.964 0.885

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C11.50202.34002.39003.67424.68621.08611.09031.09034.01234.01235.66204.77574.7757
C21.50201.32691.18662.35103.61462.12882.13032.13032.62662.62664.46273.89473.8947
O32.34001.32692.21471.42472.36973.26072.60752.60752.05662.05663.32202.63302.6330
O42.39001.18662.21472.64994.12512.54913.08573.08572.62182.62184.76364.54164.5416
C53.67422.35101.42472.64991.51134.47093.96233.96231.08931.08932.14372.15552.1555
C64.68623.61462.36974.12511.51135.63044.77624.77622.16512.16511.09181.09121.0912
H71.08612.12883.26072.54914.47095.63041.78601.78604.67674.67676.55005.76455.7645
H81.09032.13032.60753.08573.96234.77621.78601.75974.19234.54655.79074.93954.6135
H91.09032.13032.60753.08573.96234.77621.78601.75974.54654.19235.79074.61354.9395
H104.01232.62662.05662.62181.08932.16514.67674.19234.54651.75932.50383.07032.5126
H114.01232.62662.05662.62181.08932.16514.67674.54654.19231.75932.50382.51263.0703
H125.66204.46273.32204.76362.14371.09186.55005.79075.79072.50382.50381.77141.7714
H134.77573.89472.63304.54162.15551.09125.76454.93954.61353.07032.51261.77141.7697
H144.77573.89472.63304.54162.15551.09125.76454.61354.93952.51263.07031.77141.7697

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 111.471 C1 C2 O4 125.066
C2 C1 H7 109.628 C2 C1 H8 109.496
C2 C1 H9 109.496 C2 O3 C5 117.343
O3 C2 O4 123.462 O3 C5 C6 107.592
O3 C5 H10 109.054 O3 C5 H11 109.054
C5 C6 H12 109.829 C5 C6 H13 110.801
C5 C6 H14 110.801 C6 C5 H10 111.691
C6 C5 H11 111.691 H7 C1 H8 110.292
H7 C1 H9 110.292 H8 C1 H9 107.605
H10 C5 H11 107.710 H12 C6 H13 108.482
H12 C6 H14 108.482 H13 C6 H14 108.375
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.002      
2 C 0.313      
3 O -0.443      
4 O -0.368      
5 C 0.157      
6 C -0.044      
7 H 0.060      
8 H 0.062      
9 H 0.062      
10 H 0.040      
11 H 0.040      
12 H 0.034      
13 H 0.042      
14 H 0.042      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.197 2.058 0.000 2.068
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.527 -1.057 0.000
y -1.057 -43.253 0.000
z 0.000 0.000 -35.387
Traceless
 xyz
x 8.793 -1.057 0.000
y -1.057 -10.296 0.000
z 0.000 0.000 1.503
Polar
3z2-r23.006
x2-y212.726
xy-1.057
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.893 0.362 0.000
y 0.362 7.079 0.000
z 0.000 0.000 5.609


<r2> (average value of r2) Å2
<r2> 199.143
(<r2>)1/2 14.112