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

using model chemistry: CID/6-31G*

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 CID/6-31G*
 hartrees
Energy at 0K-267.474938
Energy at 298.15K-267.482292
HF Energy-266.828618
Nuclear repulsion energy178.634696
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 CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3257 3009 22.45      
2 A' 3222 2976 57.27      
3 A' 3203 2958 15.97      
4 A' 3177 2934 14.05      
5 A' 1938 1790 333.27      
6 A' 1619 1495 6.28      
7 A' 1594 1473 2.69      
8 A' 1530 1413 18.98      
9 A' 1494 1380 3.39      
10 A' 1483 1370 1.83      
11 A' 1332 1230 470.76      
12 A' 1207 1115 12.49      
13 A' 1108 1024 16.65      
14 A' 924 854 13.53      
15 A' 834 770 4.86      
16 A' 402 371 6.96      
17 A' 241 223 8.45      
18 A" 3271 3022 39.48      
19 A" 3248 3000 2.92      
20 A" 1582 1462 5.54      
21 A" 1375 1270 0.95      
22 A" 1258 1162 5.68      
23 A" 1120 1034 1.68      
24 A" 857 792 0.24      
25 A" 355 328 26.70      
26 A" 254 234 3.62      
27 A" 76 71 0.54      

Unscaled Zero Point Vibrational Energy (zpe) 20980.6 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 19379.8 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 CID/6-31G*
ABC
0.60662 0.09752 0.08672

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.168 -0.268 0.000
C2 -0.689 -0.570 0.000
O3 0.000 0.690 0.000
C4 1.326 0.626 0.000
O5 1.978 -0.378 0.000
H6 -2.735 -1.197 0.000
H7 -2.442 0.305 0.883
H8 -2.442 0.305 -0.883
H9 -0.387 -1.134 -0.879
H10 -0.387 -1.134 0.879
H11 1.746 1.633 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50912.37003.60654.14741.08861.08751.08752.16612.16614.3509
C21.50911.43582.34312.67412.14032.14902.14901.08711.08713.2834
O32.37001.43581.32802.24853.32312.62552.62552.06152.06151.9843
C43.60652.34311.32801.19714.45183.88413.88412.60852.60851.0915
O54.14742.67412.24851.19714.78404.55954.55952.63412.63412.0252
H61.08862.14033.32314.45184.78401.76631.76632.50792.50795.3000
H71.08752.14902.62553.88414.55951.76631.76513.06532.50884.4817
H81.08752.14902.62553.88414.55951.76631.76512.50883.06534.4817
H92.16611.08712.06152.60852.63412.50793.06532.50881.75763.6027
H102.16611.08712.06152.60852.63412.50792.50883.06531.75763.6027
H114.35093.28341.98431.09152.02525.30004.48174.48173.60273.6027

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 107.147 C1 C2 H9 112.066
C1 C2 H10 112.066 C2 C1 H6 109.903
C2 C1 H7 110.666 C2 C1 H8 110.666
C2 O3 C4 115.881 O3 C2 H9 108.802
O3 C2 H10 108.802 O3 C4 O5 125.783
O3 C4 H11 109.806 O5 C4 H11 124.411
H6 C1 H7 108.525 H6 C1 H8 108.525
H7 C1 H8 108.495 H9 C2 H10 107.877
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability