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

using model chemistry: HSEh1PBE/STO-3G

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 HSEh1PBE/STO-3G
 hartrees
Energy at 0K-264.622427
Energy at 298.15K-264.629195
HF Energy-264.622427
Nuclear repulsion energy173.881957
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 HSEh1PBE/STO-3G
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' 3541 3127 0.03      
2 A' 3367 2973 0.21      
3 A' 3334 2945 2.97      
4 A' 3288 2904 12.89      
5 A' 1899 1677 110.03      
6 A' 1695 1497 5.39      
7 A' 1665 1470 5.63      
8 A' 1580 1396 3.86      
9 A' 1486 1312 28.76      
10 A' 1450 1280 7.62      
11 A' 1272 1123 111.05      
12 A' 1203 1063 31.25      
13 A' 1127 995 14.85      
14 A' 949 838 4.45      
15 A' 764 675 5.90      
16 A' 374 330 3.53      
17 A' 227 200 3.57      
18 A" 3545 3130 0.18      
19 A" 3439 3037 3.24      
20 A" 1680 1484 3.93      
21 A" 1368 1208 0.00      
22 A" 1233 1089 6.74      
23 A" 959 847 0.18      
24 A" 866 765 1.85      
25 A" 332 293 10.40      
26 A" 200 176 0.45      
27 A" 36 32 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 21438.9 cm-1
Scaled (by 0.8831) Zero Point Vibrational Energy (zpe) 18932.7 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 HSEh1PBE/STO-3G
ABC
0.53848 0.09506 0.08336

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.212 -0.236 0.000
C2 -0.696 -0.518 0.000
O3 0.000 0.782 0.000
C4 1.396 0.586 0.000
O5 1.970 -0.516 0.000
H6 -2.764 -1.185 0.000
H7 -2.496 0.337 0.892
H8 -2.496 0.337 -0.892
H9 -0.404 -1.106 -0.894
H10 -0.404 -1.106 0.894
H11 1.873 1.599 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.54192.43473.69984.19121.09791.09751.09752.19652.19654.4778
C21.54191.47502.36522.66612.17262.18332.18331.10901.10903.3290
O32.43471.47501.40942.35933.39222.68742.68742.12772.12772.0432
C43.69982.36521.40941.24244.52064.00004.00002.62672.62671.1201
O54.19122.66612.35931.24244.78094.63334.63332.60452.60452.1174
H61.09792.17263.39224.52064.78091.78441.78442.52482.52485.4081
H71.09752.18332.68744.00004.63331.78441.78363.10612.54144.6337
H81.09752.18332.68744.00004.63331.78441.78362.54143.10614.6337
H92.19651.10902.12772.62672.60452.52483.10612.54141.78803.6470
H102.19651.10902.12772.62672.60452.52482.54143.10611.78803.6470
H114.47783.32902.04321.12012.11745.40814.63374.63373.64703.6470

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 107.597 C1 C2 H9 110.855
C1 C2 H10 110.855 C2 C1 H6 109.629
C2 C1 H7 110.491 C2 C1 H8 110.491
C2 O3 C4 110.149 O3 C2 H9 110.053
O3 C2 H10 110.053 O3 C4 O5 125.544
O3 C4 H11 107.197 O5 C4 H11 127.259
H6 C1 H7 108.741 H6 C1 H8 108.741
H7 C1 H8 108.703 H9 C2 H10 107.442
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.236      
2 C -0.049      
3 O -0.169      
4 C 0.139      
5 O -0.208      
6 H 0.088      
7 H 0.089      
8 H 0.089      
9 H 0.089      
10 H 0.089      
11 H 0.078      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.288 0.179 0.000 1.301
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.110 3.381 0.000
y 3.381 -27.736 0.000
z 0.000 0.000 -26.863
Traceless
 xyz
x -1.811 3.381 0.000
y 3.381 0.250 0.000
z 0.000 0.000 1.560
Polar
3z2-r23.121
x2-y2-1.374
xy3.381
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.286 0.181 0.000
y 0.181 3.162 0.000
z 0.000 0.000 1.955


<r2> (average value of r2) Å2
<r2> 137.205
(<r2>)1/2 11.713