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

using model chemistry: wB97X-D/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 wB97X-D/3-21G
 hartrees
Energy at 0K-266.819921
Energy at 298.15K-266.827041
HF Energy-266.819921
Nuclear repulsion energy175.872992
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/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' 3170 3170 14.10      
2 A' 3119 3119 58.00      
3 A' 3107 3107 9.98      
4 A' 3093 3093 9.38      
5 A' 1776 1776 206.51      
6 A' 1577 1577 12.75      
7 A' 1567 1567 5.55      
8 A' 1475 1475 17.26      
9 A' 1425 1425 6.56      
10 A' 1416 1416 3.19      
11 A' 1209 1209 377.10      
12 A' 1157 1157 8.95      
13 A' 1040 1040 14.45      
14 A' 854 854 8.04      
15 A' 794 794 3.71      
16 A' 373 373 9.31      
17 A' 220 220 7.64      
18 A" 3182 3182 23.97      
19 A" 3151 3151 5.28      
20 A" 1558 1558 9.12      
21 A" 1327 1327 0.00      
22 A" 1200 1200 7.46      
23 A" 1058 1058 0.07      
24 A" 852 852 2.65      
25 A" 339 339 28.14      
26 A" 228 228 2.56      
27 A" 41 41 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 20152.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20152.9 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/3-21G
ABC
0.57863 0.09519 0.08434

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.192 -0.254 0.000
C2 -0.709 -0.589 0.000
O3 0.000 0.708 0.000
C4 1.358 0.633 0.000
O5 1.999 -0.404 0.000
H6 -2.783 -1.174 0.000
H7 -2.444 0.331 0.888
H8 -2.444 0.331 -0.888
H9 -0.412 -1.155 -0.886
H10 -0.412 -1.155 0.886
H11 1.766 1.647 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.52062.39433.65954.19381.09381.09261.09262.18322.18324.3915
C21.52061.47892.40162.71422.15512.15502.15501.09281.09283.3361
O32.39431.47891.36012.28743.36042.62732.62732.10472.10472.0002
C43.65952.40161.36011.21914.51863.91583.91582.66822.66821.0930
O54.19382.71422.28741.21914.84384.58964.58962.67672.67672.0641
H61.09382.15513.36044.51864.84381.78041.78042.53122.53125.3535
H71.09262.15502.62733.91584.58961.78041.77573.07952.51714.4995
H81.09262.15502.62733.91584.58961.78041.77572.51713.07954.4995
H92.18321.09282.10472.66822.67672.53123.07952.51711.77273.6588
H102.18321.09282.10472.66822.67672.53122.51713.07951.77273.6588
H114.39153.33612.00021.09302.06415.35354.49954.49953.65883.6588

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 105.915 C1 C2 H9 112.275
C1 C2 H10 112.275 C2 C1 H6 109.964
C2 C1 H7 110.032 C2 C1 H8 110.032
C2 O3 C4 115.483 O3 C2 H9 108.932
O3 C2 H10 108.932 O3 C4 O5 124.881
O3 C4 H11 108.766 O5 C4 H11 126.353
H6 C1 H7 109.036 H6 C1 H8 109.036
H7 C1 H8 108.712 H9 C2 H10 108.407
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.638      
2 C -0.194      
3 O -0.514      
4 C 0.443      
5 O -0.479      
6 H 0.216      
7 H 0.232      
8 H 0.232      
9 H 0.238      
10 H 0.238      
11 H 0.227      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.847 0.386 0.000 1.887
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.276 5.167 0.000
y 5.167 -29.040 0.000
z 0.000 0.000 -28.954
Traceless
 xyz
x -3.279 5.167 0.000
y 5.167 1.575 0.000
z 0.000 0.000 1.703
Polar
3z2-r23.407
x2-y2-3.236
xy5.167
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.384 0.269 0.000
y 0.269 5.132 0.000
z 0.000 0.000 3.703


<r2> (average value of r2) Å2
<r2> 137.151
(<r2>)1/2 11.711