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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-268.103164
Energy at 298.15K-268.110357
HF Energy-267.856510
Nuclear repulsion energy177.245476
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 B2PLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3172 3011 21.27      
2 A' 3112 2954 4.09      
3 A' 3109 2951 75.36      
4 A' 3095 2938 14.13      
5 A' 1814 1722 264.63      
6 A' 1565 1486 6.53      
7 A' 1548 1469 2.50      
8 A' 1470 1395 15.27      
9 A' 1428 1355 2.13      
10 A' 1424 1352 7.31      
11 A' 1237 1174 393.50      
12 A' 1159 1100 10.03      
13 A' 1054 1000 17.69      
14 A' 872 827 13.12      
15 A' 794 754 2.44      
16 A' 384 365 6.09      
17 A' 229 218 7.20      
18 A" 3184 3022 35.27      
19 A" 3156 2996 6.32      
20 A" 1537 1459 5.45      
21 A" 1322 1255 0.66      
22 A" 1209 1148 4.96      
23 A" 1043 990 0.38      
24 A" 829 787 0.53      
25 A" 353 335 21.22      
26 A" 243 230 2.25      
27 A" 62 59 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 20201.8 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 19175.6 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 B2PLYP/6-31G*
ABC
0.59277 0.09629 0.08549

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.181 -0.262 0.000
C2 -0.698 -0.567 0.000
O3 0.000 0.704 0.000
C4 1.340 0.622 0.000
O5 1.990 -0.399 0.000
H6 -2.751 -1.195 0.000
H7 -2.458 0.313 0.886
H8 -2.458 0.313 -0.886
H9 -0.392 -1.133 -0.883
H10 -0.392 -1.133 0.883
H11 1.762 1.636 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51352.38523.63024.17341.09331.09221.09222.17662.17664.3755
C21.51351.45042.36002.69392.14622.15802.15801.09241.09243.3022
O32.38521.45041.34282.27573.34262.64232.64232.07592.07591.9930
C43.63022.36001.34281.21044.47623.91283.91282.61942.61941.0979
O54.17342.69392.27571.21044.80744.59164.59162.64472.64472.0475
H61.09332.14623.34264.47624.80741.77331.77332.51902.51905.3269
H71.09222.15802.64233.91284.59161.77331.77273.08052.52194.5106
H81.09222.15802.64233.91284.59161.77331.77272.52193.08054.5106
H92.17661.09242.07592.61942.64472.51903.08052.52191.76523.6175
H102.17661.09242.07592.61942.64472.51902.52193.08051.76523.6175
H114.37553.30221.99301.09792.04755.32694.51064.51063.61753.6175

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 107.149 C1 C2 H9 112.272
C1 C2 H10 112.272 C2 C1 H6 109.784
C2 C1 H7 110.790 C2 C1 H8 110.790
C2 O3 C4 115.268 O3 C2 H9 108.628
O3 C2 H10 108.628 O3 C4 O5 126.000
O3 C4 H11 109.073 O5 C4 H11 124.927
H6 C1 H7 108.459 H6 C1 H8 108.459
H7 C1 H8 108.488 H9 C2 H10 107.787
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.477      
2 C -0.049      
3 O -0.436      
4 C 0.387      
5 O -0.420      
6 H 0.161      
7 H 0.170      
8 H 0.170      
9 H 0.171      
10 H 0.171      
11 H 0.150      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.969 0.510 0.000 2.034
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.720 4.713 0.000
y 4.713 -29.270 0.000
z 0.000 0.000 -29.161
Traceless
 xyz
x -3.505 4.713 0.000
y 4.713 1.670 0.000
z 0.000 0.000 1.835
Polar
3z2-r23.669
x2-y2-3.450
xy4.713
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.863 0.219 0.000
y 0.219 5.552 0.000
z 0.000 0.000 4.161


<r2> (average value of r2) Å2
<r2> 135.871
(<r2>)1/2 11.656