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

using model chemistry: MP3=FULL/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 MP3=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-267.835847
Energy at 298.15K-267.843164
HF Energy-266.857579
Nuclear repulsion energy179.146255
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/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' 3222 3222 12.85      
2 A' 3147 3147 9.02      
3 A' 3134 3134 8.78      
4 A' 3130 3130 52.07      
5 A' 1906 1906 296.08      
6 A' 1567 1567 8.13      
7 A' 1546 1546 2.01      
8 A' 1471 1471 14.89      
9 A' 1456 1456 2.08      
10 A' 1434 1434 0.34      
11 A' 1294 1294 413.65      
12 A' 1173 1173 10.85      
13 A' 1091 1091 13.75      
14 A' 905 905 8.27      
15 A' 824 824 4.63      
16 A' 392 392 6.37      
17 A' 238 238 7.19      
18 A" 3229 3229 19.75      
19 A" 3193 3193 7.51      
20 A" 1536 1536 5.20      
21 A" 1346 1346 1.41      
22 A" 1219 1219 4.60      
23 A" 1105 1105 0.48      
24 A" 831 831 0.62      
25 A" 355 355 20.61      
26 A" 249 249 2.28      
27 A" 76 76 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 20533.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20533.0 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 MP3=FULL/6-31G(2df,p)
ABC
0.60397 0.09857 0.08749

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.161 -0.265 0.000
C2 -0.679 -0.560 0.000
O3 0.000 0.699 0.000
C4 1.323 0.615 0.000
O5 1.963 -0.390 0.000
H6 -2.724 -1.196 0.000
H7 -2.437 0.307 0.883
H8 -2.437 0.307 -0.883
H9 -0.377 -1.127 -0.879
H10 -0.377 -1.127 0.879
H11 1.749 1.624 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51072.36643.59334.12571.08821.08761.08762.16752.16754.3423
C21.51071.43122.32192.64782.14162.14962.14961.08861.08863.2660
O32.36641.43121.32562.24493.31892.62152.62152.06182.06181.9783
C43.59332.32191.32561.19174.43423.87443.87442.58812.58811.0947
O54.12572.64782.24491.19174.75624.54144.54142.60592.60592.0248
H61.08822.14163.31894.43424.75621.76661.76662.50752.50755.2880
H71.08762.14962.62153.87444.54141.76661.76553.06662.51024.4762
H81.08762.14962.62153.87444.54141.76661.76552.51023.06664.4762
H92.16751.08862.06182.58812.60592.50753.06662.51021.75733.5860
H102.16751.08862.06182.58812.60592.50752.51023.06661.75733.5860
H114.34233.26601.97831.09472.02485.28804.47624.47623.58603.5860

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 107.070 C1 C2 H9 111.977
C1 C2 H10 111.977 C2 C1 H6 109.925
C2 C1 H7 110.595 C2 C1 H8 110.595
C2 O3 C4 114.703 O3 C2 H9 109.061
O3 C2 H10 109.061 O3 C4 O5 126.120
O3 C4 H11 109.281 O5 C4 H11 124.599
H6 C1 H7 108.576 H6 C1 H8 108.576
H7 C1 H8 108.515 H9 C2 H10 107.641
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability