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All results from a given calculation for HCOOC2H5 (Ethyl formate)

using model chemistry: TPSSh/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS trans 1A'
Energy calculated at TPSSh/6-311+G(3df,2p)
 hartrees
Energy at 0K-268.489323
Energy at 298.15K-268.496438
HF Energy-268.489323
Nuclear repulsion energy177.507232
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 TPSSh/6-311+G(3df,2p)
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' 3103 3103 24.07      
2 A' 3049 3049 10.12      
3 A' 3034 3034 15.60      
4 A' 3030 3030 61.02      
5 A' 1776 1776 326.63      
6 A' 1524 1524 7.50      
7 A' 1508 1508 2.31      
8 A' 1425 1425 8.83      
9 A' 1396 1396 0.57      
10 A' 1389 1389 6.21      
11 A' 1195 1195 387.66      
12 A' 1129 1129 10.34      
13 A' 1023 1023 23.81      
14 A' 847 847 13.88      
15 A' 780 780 0.87      
16 A' 370 370 5.36      
17 A' 218 218 7.20      
18 A" 3115 3115 38.52      
19 A" 3085 3085 2.28      
20 A" 1497 1497 5.96      
21 A" 1292 1292 1.33      
22 A" 1177 1177 3.73      
23 A" 1032 1032 0.03      
24 A" 801 801 0.66      
25 A" 349 349 20.40      
26 A" 227 227 1.80      
27 A" 56 56 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 19713.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19713.5 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 TPSSh/6-311+G(3df,2p)
ABC
0.59570 0.09638 0.08561

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.180 -0.283 0.000
C2 -0.695 -0.572 0.000
O3 0.000 0.704 0.000
C4 1.336 0.633 0.000
O5 1.988 -0.379 0.000
H6 -2.732 -1.225 0.000
H7 -2.467 0.285 0.886
H8 -2.467 0.285 -0.886
H9 -0.380 -1.131 -0.883
H10 -0.380 -1.131 0.883
H11 1.753 1.649 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51262.39273.63324.16831.09191.09091.09092.17622.17624.3810
C21.51261.45302.36142.68932.13972.15912.15911.09121.09123.3046
O32.39271.45301.33832.26373.34462.65492.65492.07152.07151.9909
C43.63322.36141.33831.20324.47273.92113.92112.61452.61451.0979
O54.16832.68932.26371.20324.79534.59064.59062.63652.63652.0411
H61.09192.13973.34464.47274.79531.77021.77022.51432.51435.3265
H71.09092.15912.65493.92114.59061.77021.77163.08052.52214.5226
H81.09092.15912.65493.92114.59061.77021.77162.52213.08054.5226
H92.17621.09122.07152.61452.63652.51433.08052.52211.76593.6129
H102.17621.09122.07152.61452.63652.51432.52213.08051.76593.6129
H114.38103.30461.99091.09792.04115.32654.52264.52263.61293.6129

picture of Ethyl formate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.552 C1 C2 H9 112.381
C1 C2 H10 112.381 C2 C1 H6 109.412
C2 C1 H7 111.010 C2 C1 H8 111.010
C2 O3 C4 115.497 O3 C2 H9 108.175
O3 C2 H10 108.175 O3 C4 O5 125.839
O3 C4 H11 109.216 O5 C4 H11 124.945
H6 C1 H7 108.379 H6 C1 H8 108.379
H7 C1 H8 108.574 H9 C2 H10 108.022
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.281      
2 C 0.171      
3 O -0.559      
4 C 0.719      
5 O -0.627      
6 H 0.093      
7 H 0.098      
8 H 0.098      
9 H 0.103      
10 H 0.103      
11 H 0.082      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.138 0.536 0.000 2.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.559 0.232 0.000
y 0.232 6.791 0.000
z 0.000 0.000 5.380


<r2> (average value of r2) Å2
<r2> 135.963
(<r2>)1/2 11.660