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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-267.161963
Energy at 298.15K-267.169165
HF Energy-266.695586
Nuclear repulsion energy175.082432
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
4/u)
Dep P Dep U
1 A' 3227 3018 40.86      
2 A' 3200 2992 25.56      
3 A' 3147 2944 11.27      
4 A' 3123 2920 16.38      
5 A' 1777 1662 273.46      
6 A' 1614 1510 8.31      
7 A' 1594 1491 5.00      
8 A' 1524 1426 12.27      
9 A' 1482 1386 11.50      
10 A' 1459 1364 7.28      
11 A' 1243 1163 467.64      
12 A' 1196 1119 6.26      
13 A' 1076 1007 10.04      
14 A' 867 811 17.24      
15 A' 798 746 3.00      
16 A' 385 360 7.54      
17 A' 222 208 9.10      
18 A" 3219 3011 41.19      
19 A" 3192 2985 5.11      
20 A" 1582 1480 6.13      
21 A" 1357 1269 0.19      
22 A" 1247 1166 8.09      
23 A" 1071 1001 0.50      
24 A" 867 811 0.37      
25 A" 330 309 38.26      
26 A" 237 222 4.83      
27 A" 61 57 0.48      

Unscaled Zero Point Vibrational Energy (zpe) 20547.9 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 19216.4 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
0.59267 0.09283 0.08275

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 -2.210 -0.260 0.000
C2 -0.728 -0.602 0.000
O3 0.000 0.683 0.000
C4 1.360 0.649 0.000
O5 2.038 -0.372 0.000
H6 -2.804 -1.179 0.000
H7 -2.468 0.324 0.886
H8 -2.468 0.324 -0.886
H9 -0.430 -1.168 -0.885
H10 -0.430 -1.168 0.885
H11 1.764 1.660 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.52072.40283.68414.24951.09421.09221.09222.18572.18574.4129
C21.52071.47742.43472.77592.15452.16112.16111.09201.09203.3653
O32.40281.47741.36082.29513.36602.64722.64722.09602.09602.0159
C43.68412.43471.36081.22554.54793.94343.94342.69942.69941.0882
O54.24952.77592.29511.22554.90904.64514.64512.73962.73962.0503
H61.09422.15453.36604.54794.90901.77621.77622.53432.53435.3778
H71.09222.16112.64723.94344.64511.77621.77283.08522.52584.5255
H81.09222.16112.64723.94344.64511.77621.77282.52583.08524.5255
H92.18571.09202.09602.69942.73962.53433.08522.52581.77043.6859
H102.18571.09202.09602.69942.73962.53432.52583.08521.77043.6859
H114.41293.36532.01591.08822.05035.37784.52554.52553.68593.6859

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 106.526 C1 C2 H9 112.527
C1 C2 H10 112.527 C2 C1 H6 109.886
C2 C1 H7 110.533 C2 C1 H8 110.533
C2 O3 C4 118.091 O3 C2 H9 108.393
O3 C2 H10 108.393 O3 C4 O5 125.020
O3 C4 H11 110.305 O5 C4 H11 124.675
H6 C1 H7 108.666 H6 C1 H8 108.666
H7 C1 H8 108.504 H9 C2 H10 108.318
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability