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

using model chemistry: TPSSh/6-31G(2df,p)

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 TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-268.412739
Energy at 298.15K-268.419835
HF Energy-268.412739
Nuclear repulsion energy177.461870
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 TPSSh/6-31G(2df,p)
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' 3123 3014 23.37      
2 A' 3056 2949 12.25      
3 A' 3047 2940 16.73      
4 A' 3031 2925 71.43      
5 A' 1803 1740 264.10      
6 A' 1526 1473 5.86      
7 A' 1508 1455 2.20      
8 A' 1424 1374 8.18      
9 A' 1402 1353 1.25      
10 A' 1387 1339 6.64      
11 A' 1204 1161 359.47      
12 A' 1130 1090 10.32      
13 A' 1029 993 21.09      
14 A' 852 822 11.38      
15 A' 783 756 1.89      
16 A' 369 356 5.85      
17 A' 219 211 6.58      
18 A" 3133 3023 36.39      
19 A" 3098 2989 6.85      
20 A" 1498 1446 4.20      
21 A" 1287 1242 1.13      
22 A" 1181 1140 4.07      
23 A" 1036 1000 0.06      
24 A" 797 770 0.73      
25 A" 352 340 18.06      
26 A" 227 219 1.41      
27 A" 49 47 0.58      

Unscaled Zero Point Vibrational Energy (zpe) 19775.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 19083.0 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 TPSSh/6-31G(2df,p)
ABC
0.59061 0.09677 0.08582

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.179 -0.274 0.000
C2 -0.690 -0.566 0.000
O3 0.000 0.711 0.000
C4 1.338 0.624 0.000
O5 1.981 -0.395 0.000
H6 -2.738 -1.215 0.000
H7 -2.463 0.298 0.888
H8 -2.463 0.298 -0.888
H9 -0.376 -1.129 -0.884
H10 -0.376 -1.129 0.884
H11 1.758 1.642 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51672.39083.62994.16101.09431.09361.09362.18192.18194.3784
C21.51671.45092.35192.67632.14772.16272.16271.09421.09423.2966
O32.39081.45091.34102.26813.34682.65062.65062.07542.07541.9897
C43.62992.35191.34101.20484.47173.91753.91752.60702.60701.1004
O54.16102.67632.26811.20484.78884.58434.58432.62212.62212.0485
H61.09432.14773.34684.47174.78881.77531.77532.52262.52265.3266
H71.09362.16272.65063.91754.58431.77531.77503.08702.52834.5184
H81.09362.16272.65063.91754.58431.77531.77502.52833.08704.5184
H92.18191.09422.07542.60702.62212.52263.08702.52831.76753.6077
H102.18191.09422.07542.60702.62212.52262.52833.08701.76753.6077
H114.37843.29661.98971.10042.04855.32664.51844.51843.60773.6077

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 107.328 C1 C2 H9 112.369
C1 C2 H10 112.369 C2 C1 H6 109.629
C2 C1 H7 110.854 C2 C1 H8 110.854
C2 O3 C4 114.734 O3 C2 H9 108.455
O3 C2 H10 108.455 O3 C4 O5 125.892
O3 C4 H11 108.765 O5 C4 H11 125.343
H6 C1 H7 108.469 H6 C1 H8 108.469
H7 C1 H8 108.498 H9 C2 H10 107.742
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.448      
2 C -0.078      
3 O -0.237      
4 C 0.211      
5 O -0.330      
6 H 0.146      
7 H 0.153      
8 H 0.153      
9 H 0.151      
10 H 0.151      
11 H 0.130      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.968 0.524 0.000 2.037
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.427 0.351 0.000
y 0.351 5.879 0.000
z 0.000 0.000 4.571


<r2> (average value of r2) Å2
<r2> 135.217
(<r2>)1/2 11.628