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

using model chemistry: wB97X-D/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 wB97X-D/6-311+G(3df,2p)
 hartrees
Energy at 0K-268.394473
Energy at 298.15K-268.401655
HF Energy-268.394473
Nuclear repulsion energy178.381699
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/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' 3137 3137 18.55      
2 A' 3067 3067 8.94      
3 A' 3058 3058 56.02      
4 A' 3055 3055 15.54      
5 A' 1834 1834 359.42      
6 A' 1520 1520 10.01      
7 A' 1502 1502 2.69      
8 A' 1436 1436 13.58      
9 A' 1409 1409 1.13      
10 A' 1400 1400 0.29      
11 A' 1255 1255 425.13      
12 A' 1144 1144 9.85      
13 A' 1052 1052 21.50      
14 A' 877 877 11.48      
15 A' 803 803 2.33      
16 A' 388 388 5.72      
17 A' 230 230 7.64      
18 A" 3140 3140 30.42      
19 A" 3109 3109 3.90      
20 A" 1492 1492 7.38      
21 A" 1307 1307 1.52      
22 A" 1183 1183 4.08      
23 A" 1046 1046 0.03      
24 A" 813 813 0.86      
25 A" 342 342 21.24      
26 A" 228 228 2.59      
27 A" 56 56 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 19941.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19941.7 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 wB97X-D/6-311+G(3df,2p)
ABC
0.60742 0.09694 0.08629

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.172 -0.288 0.000
C2 -0.690 -0.570 0.000
O3 0.000 0.691 0.000
C4 1.326 0.635 0.000
O5 1.985 -0.363 0.000
H6 -2.721 -1.230 0.000
H7 -2.461 0.278 0.885
H8 -2.461 0.278 -0.885
H9 -0.382 -1.134 -0.881
H10 -0.382 -1.134 0.881
H11 1.737 1.653 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50882.38243.61794.15771.09011.08951.08952.16692.16694.3643
C21.50881.43722.34842.68272.13562.15442.15441.09061.09063.2906
O32.38241.43721.32762.24783.33052.64802.64802.06292.06291.9856
C43.61792.34841.32761.19594.45593.90613.90612.61282.61281.0975
O54.15772.68272.24781.19594.78494.57894.57892.64122.64122.0309
H61.09012.13563.33054.45594.78491.76751.76752.50062.50065.3086
H71.08952.15442.64803.90614.57891.76751.76933.07192.51384.5056
H81.08952.15442.64803.90614.57891.76751.76932.51383.07194.5056
H92.16691.09062.06292.61282.64122.50063.07192.51381.76193.6106
H102.16691.09062.06292.61282.64122.50062.51383.07191.76193.6106
H114.36433.29061.98561.09752.03095.30864.50564.50563.61063.6106

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 107.909 C1 C2 H9 111.931
C1 C2 H10 111.931 C2 C1 H6 109.462
C2 C1 H7 110.987 C2 C1 H8 110.987
C2 O3 C4 116.241 O3 C2 H9 108.615
O3 C2 H10 108.615 O3 C4 O5 125.861
O3 C4 H11 109.558 O5 C4 H11 124.581
H6 C1 H7 108.376 H6 C1 H8 108.376
H7 C1 H8 108.575 H9 C2 H10 107.749
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.479      
2 C 0.034      
3 O -0.492      
4 C 0.546      
5 O -0.565      
6 H 0.154      
7 H 0.161      
8 H 0.161      
9 H 0.169      
10 H 0.169      
11 H 0.142      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.146 0.597 0.000 2.228
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.353 5.001 0.000
y 5.001 -29.340 0.000
z 0.000 0.000 -29.336
Traceless
 xyz
x -4.015 5.001 0.000
y 5.001 2.005 0.000
z 0.000 0.000 2.010
Polar
3z2-r24.021
x2-y2-4.013
xy5.001
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.233 0.178 0.000
y 0.178 6.635 0.000
z 0.000 0.000 5.335


<r2> (average value of r2) Å2
<r2> 135.059
(<r2>)1/2 11.621