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

using model chemistry: MP3=FULL/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 MP3=FULL/3-21G*
 hartrees
Energy at 0K-265.867754
Energy at 298.15K-265.874897
HF Energy-265.335563
Nuclear repulsion energy175.040878
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 MP3=FULL/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' 3157 3157 18.65      
2 A' 3117 3117 57.25      
3 A' 3096 3096 11.40      
4 A' 3089 3089 11.37      
5 A' 1778 1778 183.82      
6 A' 1612 1612 7.74      
7 A' 1594 1594 4.81      
8 A' 1494 1494 8.99      
9 A' 1455 1455 3.06      
10 A' 1447 1447 13.70      
11 A' 1207 1207 378.66      
12 A' 1165 1165 26.67      
13 A' 1030 1030 4.75      
14 A' 862 862 10.25      
15 A' 797 797 5.30      
16 A' 373 373 8.49      
17 A' 223 223 7.16      
18 A" 3170 3170 28.31      
19 A" 3131 3131 12.51      
20 A" 1582 1582 5.13      
21 A" 1342 1342 0.01      
22 A" 1226 1226 6.45      
23 A" 1062 1062 0.03      
24 A" 858 858 0.79      
25 A" 323 323 27.66      
26 A" 237 237 4.22      
27 A" 53 53 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 20240.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20240.6 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 MP3=FULL/3-21G*
ABC
0.57406 0.09425 0.08351

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.206 -0.241 0.000
C2 -0.713 -0.591 0.000
O3 0.000 0.711 0.000
C4 1.371 0.629 0.000
O5 2.005 -0.415 0.000
H6 -2.809 -1.156 0.000
H7 -2.447 0.349 0.889
H8 -2.447 0.349 -0.889
H9 -0.422 -1.163 -0.887
H10 -0.422 -1.163 0.887
H11 1.794 1.637 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.53332.40243.68114.21461.09561.09401.09402.19512.19514.4188
C21.53331.48462.41532.72402.17012.16342.16341.09491.09493.3543
O32.40241.48461.37342.29973.37222.62832.62832.11602.11602.0190
C43.68112.41531.37341.22194.54473.92993.92992.68642.68641.0928
O54.21462.72402.29971.22194.87034.60374.60372.69082.69082.0627
H61.09562.17013.37224.54474.87031.78501.78502.54572.54575.3836
H71.09402.16342.62833.92994.60371.78501.77843.08882.52684.5204
H81.09402.16342.62833.92994.60371.78501.77842.52683.08884.5204
H92.19511.09492.11602.68642.69082.54573.08882.52681.77463.6797
H102.19511.09492.11602.68642.69082.54572.52683.08881.77463.6797
H114.41883.35432.01901.09282.06275.38364.52044.52043.67973.6797

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 105.497 C1 C2 H9 112.202
C1 C2 H10 112.202 C2 C1 H6 110.162
C2 C1 H7 109.734 C2 C1 H8 109.734
C2 O3 C4 115.308 O3 C2 H9 109.300
O3 C2 H10 109.300 O3 C4 O5 124.669
O3 C4 H11 109.383 O5 C4 H11 125.948
H6 C1 H7 109.222 H6 C1 H8 109.222
H7 C1 H8 108.741 H9 C2 H10 108.267
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability