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

using model chemistry: B2PLYP/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-268.275892
Energy at 298.15K-268.283089
HF Energy-267.957827
Nuclear repulsion energy177.787772
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/6-311+G(3df,2p)
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' 3135 3135 18.96      
2 A' 3077 3077 8.08      
3 A' 3070 3070 54.52      
4 A' 3061 3061 14.07      
5 A' 1777 1777 324.53      
6 A' 1533 1533 8.80      
7 A' 1514 1514 2.61      
8 A' 1436 1436 12.48      
9 A' 1408 1408 0.31      
10 A' 1403 1403 5.15      
11 A' 1215 1215 409.01      
12 A' 1141 1141 8.74      
13 A' 1038 1038 20.59      
14 A' 860 860 13.67      
15 A' 789 789 1.24      
16 A' 382 382 5.10      
17 A' 227 227 7.35      
18 A" 3146 3146 30.92      
19 A" 3118 3118 2.27      
20 A" 1502 1502 6.59      
21 A" 1308 1308 1.35      
22 A" 1189 1189 3.80      
23 A" 1046 1046 0.00      
24 A" 818 818 0.63      
25 A" 349 349 21.22      
26 A" 237 237 2.31      
27 A" 66 66 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 19922.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19922.1 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/6-311+G(3df,2p)
ABC
0.60088 0.09647 0.08577

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.177 -0.276 0.000
C2 -0.697 -0.572 0.000
O3 0.000 0.697 0.000
C4 1.335 0.630 0.000
O5 1.990 -0.378 0.000
H6 -2.736 -1.211 0.000
H7 -2.460 0.293 0.883
H8 -2.460 0.293 -0.883
H9 -0.389 -1.133 -0.880
H10 -0.389 -1.133 0.880
H11 1.748 1.644 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50972.38473.62674.16821.08911.08811.08812.16992.16994.3696
C21.50971.44742.35992.69332.13742.15342.15341.08871.08873.2991
O32.38471.44741.33642.26193.33562.64472.64472.06802.06801.9880
C43.62672.35991.33641.20214.46753.91053.91052.61782.61781.0950
O54.16822.69332.26191.20214.79884.58594.58592.64612.64612.0362
H61.08912.13743.33564.46754.79881.76571.76572.50842.50845.3157
H71.08812.15342.64473.91054.58591.76571.76653.07162.51504.5070
H81.08812.15342.64473.91054.58591.76571.76652.51503.07164.5070
H92.16991.08872.06802.61782.64612.50843.07162.51501.76053.6128
H102.16991.08872.06802.61782.64612.50842.51503.07161.76053.6128
H114.36963.29911.98801.09502.03625.31574.50704.50703.61283.6128

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 107.474 C1 C2 H9 112.237
C1 C2 H10 112.237 C2 C1 H6 109.597
C2 C1 H7 110.934 C2 C1 H8 110.934
C2 O3 C4 115.869 O3 C2 H9 108.430
O3 C2 H10 108.430 O3 C4 O5 125.920
O3 C4 H11 109.296 O5 C4 H11 124.784
H6 C1 H7 108.386 H6 C1 H8 108.386
H7 C1 H8 108.527 H9 C2 H10 107.910
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.447      
2 C 0.079      
3 O -0.548      
4 C 0.599      
5 O -0.600      
6 H 0.147      
7 H 0.151      
8 H 0.151      
9 H 0.160      
10 H 0.160      
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
  -2.116 0.547 0.000 2.186
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.668 4.973 0.000
y 4.973 -29.857 0.000
z 0.000 0.000 -29.723
Traceless
 xyz
x -3.878 4.973 0.000
y 4.973 1.839 0.000
z 0.000 0.000 2.040
Polar
3z2-r24.079
x2-y2-3.811
xy4.973
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.382 0.180 0.000
y 0.180 6.683 0.000
z 0.000 0.000 5.319


<r2> (average value of r2) Å2
<r2> 135.921
(<r2>)1/2 11.659