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

using model chemistry: wB97X-D/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-52.540531
Energy at 298.15K-52.547676
HF Energy-52.540531
Nuclear repulsion energy99.243868
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/CEP-121G*
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' 3136 3136 39.76      
2 A' 3081 3081 12.90      
3 A' 3072 3072 81.16      
4 A' 3061 3061 23.91      
5 A' 1801 1801 352.67      
6 A' 1530 1530 9.18      
7 A' 1513 1513 2.76      
8 A' 1452 1452 22.38      
9 A' 1415 1415 1.52      
10 A' 1403 1403 1.61      
11 A' 1239 1239 458.91      
12 A' 1140 1140 10.32      
13 A' 1044 1044 24.75      
14 A' 869 869 15.76      
15 A' 787 787 2.10      
16 A' 380 380 6.09      
17 A' 229 229 7.44      
18 A" 3150 3150 64.01      
19 A" 3124 3124 3.01      
20 A" 1505 1505 7.00      
21 A" 1313 1313 1.34      
22 A" 1184 1184 4.09      
23 A" 1030 1030 0.05      
24 A" 810 810 0.40      
25 A" 331 331 23.37      
26 A" 223 223 3.18      
27 A" 69 69 0.86      

Unscaled Zero Point Vibrational Energy (zpe) 19944.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19944.0 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/CEP-121G*
ABC
0.59260 0.09557 0.08493

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.190 -0.279 0.000
C2 -0.696 -0.574 0.000
O3 0.000 0.703 0.000
C4 1.341 0.634 0.000
O5 1.997 -0.382 0.000
H6 -2.749 -1.221 0.000
H7 -2.474 0.294 0.889
H8 -2.474 0.294 -0.889
H9 -0.389 -1.139 -0.886
H10 -0.389 -1.139 0.886
H11 1.761 1.652 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.52292.39973.64664.18831.09591.09501.09502.18362.18364.3972
C21.52291.45412.36772.69992.15272.16962.16961.09471.09473.3151
O32.39971.45411.34272.27303.35532.66102.66102.08072.08072.0005
C43.64662.36771.34271.20954.49073.93223.93222.63062.63061.1014
O54.18832.69992.27301.20954.81974.60914.60912.65552.65552.0476
H61.09592.15273.35534.49074.81971.77771.77772.52202.52205.3473
H71.09502.16962.66103.93224.60911.77771.77813.09072.53044.5359
H81.09502.16962.66103.93224.60911.77771.77812.53043.09074.5359
H92.18361.09472.08072.63062.65552.52203.09072.53041.77163.6328
H102.18361.09472.08072.63062.65552.52202.53043.09071.77163.6328
H114.39723.31512.00051.10142.04765.34734.53594.53593.63283.6328

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 107.402 C1 C2 H9 112.030
C1 C2 H10 112.030 C2 C1 H6 109.496
C2 C1 H7 110.882 C2 C1 H8 110.882
C2 O3 C4 115.628 O3 C2 H9 108.625
O3 C2 H10 108.625 O3 C4 O5 125.828
O3 C4 H11 109.473 O5 C4 H11 124.700
H6 C1 H7 108.472 H6 C1 H8 108.472
H7 C1 H8 108.569 H9 C2 H10 108.032
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.543      
2 C -0.171      
3 O -0.196      
4 C 0.152      
5 O -0.321      
6 H 0.183      
7 H 0.186      
8 H 0.186      
9 H 0.187      
10 H 0.187      
11 H 0.149      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.102 0.565 0.000 2.177
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.013 5.186 0.000
y 5.186 -29.032 0.000
z 0.000 0.000 -29.093
Traceless
 xyz
x -3.951 5.186 0.000
y 5.186 2.021 0.000
z 0.000 0.000 1.929
Polar
3z2-r23.859
x2-y2-3.981
xy5.186
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.379 0.208 0.000
y 0.208 6.146 0.000
z 0.000 0.000 4.795


<r2> (average value of r2) Å2
<r2> 111.636
(<r2>)1/2 10.566