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

using model chemistry: wB97X-D/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-268.317737
Energy at 298.15K-268.324887
HF Energy-268.317737
Nuclear repulsion energy178.269531
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(2df,p)
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' 3156 3156 18.25      
2 A' 3069 3069 12.10      
3 A' 3066 3066 13.55      
4 A' 3055 3055 67.37      
5 A' 1862 1862 289.25      
6 A' 1521 1521 8.68      
7 A' 1500 1500 2.16      
8 A' 1433 1433 13.29      
9 A' 1417 1417 1.72      
10 A' 1397 1397 0.44      
11 A' 1264 1264 398.09      
12 A' 1144 1144 10.95      
13 A' 1058 1058 17.91      
14 A' 881 881 8.75      
15 A' 805 805 3.84      
16 A' 386 386 6.09      
17 A' 229 229 7.14      
18 A" 3155 3155 28.36      
19 A" 3116 3116 9.12      
20 A" 1492 1492 5.60      
21 A" 1303 1303 1.46      
22 A" 1187 1187 4.55      
23 A" 1051 1051 0.35      
24 A" 809 809 0.88      
25 A" 344 344 19.12      
26 A" 229 229 2.13      
27 A" 44 44 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 19985.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19985.7 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(2df,p)
ABC
0.60318 0.09714 0.08637

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.173 -0.281 0.000
C2 -0.686 -0.564 0.000
O3 0.000 0.696 0.000
C4 1.329 0.629 0.000
O5 1.981 -0.376 0.000
H6 -2.725 -1.225 0.000
H7 -2.461 0.289 0.887
H8 -2.461 0.289 -0.887
H9 -0.380 -1.134 -0.882
H10 -0.380 -1.134 0.882
H11 1.742 1.648 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51352.38253.61774.15461.09311.09291.09292.17292.17294.3645
C21.51351.43442.34102.67332.14342.15932.15931.09431.09433.2846
O32.38251.43441.33022.25203.33382.64712.64712.06662.06661.9853
C43.61772.34101.33021.19764.45713.90643.90642.60812.60811.1003
O54.15462.67332.25201.19764.78164.57744.57742.63132.63132.0382
H61.09312.14343.33384.45714.78161.77381.77382.50762.50765.3111
H71.09292.15932.64713.90644.57741.77381.77423.07982.52074.5052
H81.09292.15932.64713.90644.57741.77381.77422.52073.07984.5052
H92.17291.09432.06662.60812.63132.50763.07982.52071.76483.6083
H102.17291.09432.06662.60812.63132.50762.52073.07981.76483.6083
H114.36453.28461.98531.10032.03825.31114.50524.50523.60833.6083

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 107.810 C1 C2 H9 111.865
C1 C2 H10 111.865 C2 C1 H6 109.578
C2 C1 H7 110.852 C2 C1 H8 110.852
C2 O3 C4 115.671 O3 C2 H9 108.875
O3 C2 H10 108.875 O3 C4 O5 125.893
O3 C4 H11 109.167 O5 C4 H11 124.940
H6 C1 H7 108.479 H6 C1 H8 108.479
H7 C1 H8 108.532 H9 C2 H10 107.485
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.445      
2 C -0.078      
3 O -0.227      
4 C 0.194      
5 O -0.323      
6 H 0.146      
7 H 0.152      
8 H 0.152      
9 H 0.147      
10 H 0.147      
11 H 0.135      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.987 0.583 0.000 2.071
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.436 4.558 0.000
y 4.558 -28.667 0.000
z 0.000 0.000 -28.713
Traceless
 xyz
x -3.746 4.558 0.000
y 4.558 1.907 0.000
z 0.000 0.000 1.838
Polar
3z2-r23.677
x2-y2-3.769
xy4.558
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.162 0.295 0.000
y 0.295 5.786 0.000
z 0.000 0.000 4.557


<r2> (average value of r2) Å2
<r2> 134.525
(<r2>)1/2 11.598