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

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-268.191360
Energy at 298.15K 
HF Energy-267.881006
Nuclear repulsion energy177.950629
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 B2PLYP=FULLultrafine/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' 3165 3165 16.79      
2 A' 3094 3094 11.36      
3 A' 3084 3084 11.59      
4 A' 3072 3072 62.15      
5 A' 1811 1811 258.54      
6 A' 1538 1538 7.45      
7 A' 1518 1518 2.21      
8 A' 1440 1440 12.26      
9 A' 1415 1415 1.41      
10 A' 1406 1406 4.23      
11 A' 1230 1230 377.69      
12 A' 1146 1146 9.32      
13 A' 1050 1050 17.67      
14 A' 868 868 10.53      
15 A' 796 796 2.42      
16 A' 381 381 5.66      
17 A' 229 229 6.76      
18 A" 3173 3173 26.38      
19 A" 3139 3139 6.92      
20 A" 1509 1509 4.82      
21 A" 1310 1310 1.13      
22 A" 1197 1197 4.34      
23 A" 1057 1057 0.24      
24 A" 817 817 0.68      
25 A" 353 353 18.51      
26 A" 241 241 1.88      
27 A" 61 61 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 20051.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20051.1 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 B2PLYP=FULLultrafine/6-31G(2df,p)
ABC
0.59694 0.09711 0.08621

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.173 -0.265 0.000
C2 -0.691 -0.564 0.000
O3 0.000 0.703 0.000
C4 1.334 0.619 0.000
O5 1.980 -0.394 0.000
H6 -2.739 -1.198 0.000
H7 -2.452 0.308 0.885
H8 -2.452 0.308 -0.885
H9 -0.384 -1.131 -0.881
H10 -0.384 -1.131 0.881
H11 1.752 1.635 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51202.37933.61744.15591.09121.09051.09052.17402.17404.3607
C21.51201.44362.34602.67722.14352.15522.15521.09131.09133.2869
O32.37931.44361.33682.26423.33422.63682.63682.07052.07051.9840
C43.61742.34601.33681.20224.46033.90103.90102.60622.60621.0977
O54.15592.67722.26421.20224.78744.57454.57452.62872.62872.0418
H61.09122.14353.33424.46034.78741.77031.77032.51492.51495.3096
H71.09052.15522.63683.90104.57451.77031.76963.07642.51944.4964
H81.09052.15522.63683.90104.57451.77031.76962.51943.07644.4964
H92.17401.09132.07052.60622.62872.51493.07642.51941.76153.6037
H102.17401.09132.07052.60622.62872.51492.51943.07641.76153.6037
H114.36073.28691.98401.09772.04185.30964.49644.49643.60373.6037

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 107.201 C1 C2 H9 112.239
C1 C2 H10 112.239 C2 C1 H6 109.806
C2 C1 H7 110.777 C2 C1 H8 110.777
C2 O3 C4 115.024 O3 C2 H9 108.728
O3 C2 H10 108.728 O3 C4 O5 126.105
O3 C4 H11 108.770 O5 C4 H11 125.125
H6 C1 H7 108.475 H6 C1 H8 108.475
H7 C1 H8 108.464 H9 C2 H10 107.613
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability