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

using model chemistry: B97D3/3-21G

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 B97D3/3-21G
 hartrees
Energy at 0K-266.748148
Energy at 298.15K-266.755061
HF Energy-266.748148
Nuclear repulsion energy174.017434
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 B97D3/3-21G
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' 3086 3034 22.90      
2 A' 3027 2976 11.04      
3 A' 3015 2963 14.54      
4 A' 2986 2935 81.71      
5 A' 1676 1648 171.49      
6 A' 1545 1519 8.82      
7 A' 1532 1506 5.38      
8 A' 1434 1410 9.17      
9 A' 1370 1347 11.17      
10 A' 1361 1338 6.82      
11 A' 1117 1098 22.33      
12 A' 1096 1078 293.19      
13 A' 991 974 23.08      
14 A' 796 782 8.01      
15 A' 751 738 1.58      
16 A' 358 352 7.66      
17 A' 213 209 6.39      
18 A" 3103 3050 37.37      
19 A" 3068 3016 6.47      
20 A" 1525 1499 6.92      
21 A" 1285 1263 0.04      
22 A" 1156 1136 5.61      
23 A" 1000 983 0.57      
24 A" 827 813 2.31      
25 A" 338 332 22.97      
26 A" 221 218 1.75      
27 A" 4 4 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 19439.8 cm-1
Scaled (by 0.983) Zero Point Vibrational Energy (zpe) 19109.3 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 B97D3/3-21G
ABC
0.56095 0.09352 0.08268

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.211 -0.239 0.000
C2 -0.724 -0.591 0.000
O3 0.000 0.729 0.000
C4 1.380 0.622 0.000
O5 2.015 -0.433 0.000
H6 -2.812 -1.160 0.000
H7 -2.458 0.350 0.893
H8 -2.458 0.350 -0.893
H9 -0.423 -1.156 -0.892
H10 -0.423 -1.156 0.892
H11 1.790 1.644 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.52742.41363.69254.23021.09971.09801.09802.19782.19784.4220
C21.52741.50542.42882.74402.16382.16512.16511.09801.09803.3641
O32.41361.50541.38382.32573.38772.64242.64242.12792.12792.0103
C43.69252.42881.38381.23154.55503.94963.94962.68512.68511.1011
O54.23022.74402.32571.23154.88154.62804.62802.69532.69532.0890
H61.09972.16383.38774.55504.88151.78991.78992.54952.54955.3891
H71.09802.16512.64243.94964.62801.78991.78513.09732.53174.5295
H81.09802.16512.64243.94964.62801.78991.78512.53173.09734.5295
H92.19781.09802.12792.68512.69532.54953.09732.53171.78353.6792
H102.19781.09802.12792.68512.69532.54952.53173.09731.78353.6792
H114.42203.36412.01031.10112.08905.38914.52954.52953.67923.6792

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 105.468 C1 C2 H9 112.658
C1 C2 H10 112.658 C2 C1 H6 109.836
C2 C1 H7 110.040 C2 C1 H8 110.040
C2 O3 C4 114.351 O3 C2 H9 108.634
O3 C2 H10 108.634 O3 C4 O5 125.469
O3 C4 H11 107.454 O5 C4 H11 127.077
H6 C1 H7 109.066 H6 C1 H8 109.066
H7 C1 H8 108.765 H9 C2 H10 108.618
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.601      
2 C -0.189      
3 O -0.460      
4 C 0.405      
5 O -0.453      
6 H 0.204      
7 H 0.219      
8 H 0.219      
9 H 0.226      
10 H 0.226      
11 H 0.204      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.871 0.289 0.000 1.894
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.053 4.790 0.000
y 4.790 -29.268 0.000
z 0.000 0.000 -29.062
Traceless
 xyz
x -2.888 4.790 0.000
y 4.790 1.289 0.000
z 0.000 0.000 1.599
Polar
3z2-r23.197
x2-y2-2.785
xy4.790
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.924 0.388 0.000
y 0.388 5.345 0.000
z 0.000 0.000 3.771


<r2> (average value of r2) Å2
<r2> 139.411
(<r2>)1/2 11.807