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

using model chemistry: wB97X-D/6-31G

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 wB97X-D/6-31G
 hartrees
Energy at 0K-268.202769
Energy at 298.15K-268.209901
HF Energy-268.202769
Nuclear repulsion energy175.558756
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 wB97X-D/6-31G
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' 3170 3170 44.35      
2 A' 3166 3166 23.59      
3 A' 3097 3097 10.85      
4 A' 3077 3077 15.54      
5 A' 1746 1746 261.43      
6 A' 1560 1560 11.46      
7 A' 1548 1548 5.53      
8 A' 1477 1477 17.93      
9 A' 1438 1438 5.49      
10 A' 1413 1413 8.37      
11 A' 1222 1222 400.26      
12 A' 1166 1166 7.90      
13 A' 1061 1061 18.32      
14 A' 845 845 13.44      
15 A' 785 785 2.22      
16 A' 381 381 7.91      
17 A' 222 222 8.42      
18 A" 3179 3179 35.78      
19 A" 3150 3150 4.48      
20 A" 1539 1539 9.29      
21 A" 1326 1326 0.38      
22 A" 1204 1204 8.12      
23 A" 1034 1034 0.00      
24 A" 846 846 1.50      
25 A" 339 339 32.99      
26 A" 228 228 2.97      
27 A" 51 51 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 20133.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20133.8 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 wB97X-D/6-31G
ABC
0.58932 0.09383 0.08348

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.199 -0.265 0.000
C2 -0.722 -0.593 0.000
O3 0.000 0.692 0.000
C4 1.354 0.646 0.000
O5 2.024 -0.381 0.000
H6 -2.784 -1.190 0.000
H7 -2.467 0.315 0.887
H8 -2.467 0.315 -0.887
H9 -0.418 -1.157 -0.886
H10 -0.418 -1.157 0.886
H11 1.759 1.659 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51342.39843.66874.22551.09451.09311.09312.18072.18074.4014
C21.51341.47402.41812.75472.14692.15782.15781.09351.09353.3511
O32.39841.47401.35532.29103.36052.64822.64822.09252.09252.0077
C43.66872.41811.35531.22594.52773.93663.93662.67902.67901.0911
O54.22552.75472.29101.22594.87654.63054.63052.71162.71162.0569
H61.09452.14693.36054.52774.87651.77571.77572.52722.52725.3629
H71.09312.15782.64823.93664.63051.77571.77403.08382.52324.5223
H81.09312.15782.64823.93664.63051.77571.77402.52323.08384.5223
H92.18071.09352.09252.67902.71162.52723.08382.52321.77203.6683
H102.18071.09352.09252.67902.71162.52722.52323.08381.77203.6683
H114.40143.35112.00771.09112.05695.36294.52234.52233.66833.6683

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 106.798 C1 C2 H9 112.549
C1 C2 H10 112.549 C2 C1 H6 109.778
C2 C1 H7 110.724 C2 C1 H8 110.724
C2 O3 C4 117.387 O3 C2 H9 108.268
O3 C2 H10 108.268 O3 C4 O5 125.074
O3 C4 H11 109.837 O5 C4 H11 125.089
H6 C1 H7 108.536 H6 C1 H8 108.536
H7 C1 H8 108.481 H9 C2 H10 108.242
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.478      
2 C -0.076      
3 O -0.498      
4 C 0.371      
5 O -0.421      
6 H 0.167      
7 H 0.181      
8 H 0.181      
9 H 0.192      
10 H 0.192      
11 H 0.188      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.164 0.424 0.000 2.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.037 5.713 0.000
y 5.713 -29.270 0.000
z 0.000 0.000 -29.144
Traceless
 xyz
x -3.830 5.713 0.000
y 5.713 1.821 0.000
z 0.000 0.000 2.009
Polar
3z2-r24.018
x2-y2-3.767
xy5.713
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.819 0.157 0.000
y 0.157 5.497 0.000
z 0.000 0.000 4.006


<r2> (average value of r2) Å2
<r2> 138.565
(<r2>)1/2 11.771