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

using model chemistry: BLYP/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 BLYP/STO-3G
 hartrees
Energy at 0K-264.746858
Energy at 298.15K 
HF Energy-264.746858
Nuclear repulsion energy170.485338
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 BLYP/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' 3377 3125 0.94      
2 A' 3217 2976 1.00      
3 A' 3173 2936 4.52      
4 A' 3091 2859 24.47      
5 A' 1765 1633 91.27      
6 A' 1639 1516 3.80      
7 A' 1600 1480 5.77      
8 A' 1519 1405 0.42      
9 A' 1402 1297 35.69      
10 A' 1373 1270 2.05      
11 A' 1169 1082 33.51      
12 A' 1100 1017 86.62      
13 A' 1042 964 13.39      
14 A' 877 811 4.68      
15 A' 710 657 4.03      
16 A' 347 321 2.35      
17 A' 210 194 2.97      
18 A" 3384 3131 1.69      
19 A" 3275 3030 6.27      
20 A" 1627 1505 3.29      
21 A" 1305 1208 0.11      
22 A" 1165 1078 5.02      
23 A" 877 812 0.90      
24 A" 831 769 1.77      
25 A" 326 301 7.73      
26 A" 187 173 0.25      
27 A" 20i 18i 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 20283.0 cm-1
Scaled (by 0.9252) Zero Point Vibrational Energy (zpe) 18765.8 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 BLYP/STO-3G
ABC
0.51659 0.09129 0.08000

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.255 -0.226 0.000
C2 -0.719 -0.529 0.000
O3 0.000 0.805 0.000
C4 1.432 0.584 0.000
O5 2.011 -0.539 0.000
H6 -2.821 -1.180 0.000
H7 -2.535 0.355 0.901
H8 -2.535 0.355 -0.901
H9 -0.425 -1.119 -0.905
H10 -0.425 -1.119 0.905
H11 1.905 1.613 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.56572.47933.77454.27711.10901.10831.10832.22822.22824.5483
C21.56571.51532.42152.72952.20092.21242.21241.11981.11983.3873
O32.47931.51531.44872.41863.44932.72822.72822.16852.16852.0694
C43.77452.42151.44871.26354.60424.07474.07472.67742.67741.1328
O54.27712.72952.41861.26354.87434.72024.72022.66272.66272.1548
H61.10902.20093.44934.60424.87431.80231.80232.56222.56225.4897
H71.10832.21242.72824.07474.72021.80231.80213.14482.57434.7025
H81.10832.21242.72824.07474.72021.80231.80212.57433.14484.7025
H92.22821.11982.16852.67742.66272.56223.14482.57431.81063.7034
H102.22821.11982.16852.67742.66272.56222.57433.14481.81063.7034
H114.54833.38732.06941.13282.15485.48974.70254.70253.70343.7034

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 111.052
C1 C2 H10 111.052 C2 C1 H6 109.554
C2 C1 H7 110.485 C2 C1 H8 110.485
C2 O3 C4 109.539 O3 C2 H9 109.852
O3 C2 H10 109.852 O3 C4 O5 126.048
O3 C4 H11 105.922 O5 C4 H11 128.030
H6 C1 H7 108.745 H6 C1 H8 108.745
H7 C1 H8 108.783 H9 C2 H10 107.890
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.215      
2 C -0.047      
3 O -0.139      
4 C 0.111      
5 O -0.188      
6 H 0.081      
7 H 0.082      
8 H 0.082      
9 H 0.083      
10 H 0.083      
11 H 0.067      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.348 0.121 0.000 1.353
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.991 3.116 0.000
y 3.116 -27.739 0.000
z 0.000 0.000 -26.979
Traceless
 xyz
x -1.632 3.116 0.000
y 3.116 0.246 0.000
z 0.000 0.000 1.386
Polar
3z2-r22.772
x2-y2-1.252
xy3.116
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.790 0.267 0.000
y 0.267 3.346 0.000
z 0.000 0.000 2.041


<r2> (average value of r2) Å2
<r2> 142.040
(<r2>)1/2 11.918