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

using model chemistry: CCSD(T)/6-311G*

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 CCSD(T)/6-311G*
 hartrees
Energy at 0K-267.745521
Energy at 298.15K-267.752742
HF Energy-266.887488
Nuclear repulsion energy177.385439
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 CCSD(T)/6-311G*
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' 3113 2997        
2 A' 3057 2942        
3 A' 3054 2939        
4 A' 3035 2922        
5 A' 1806 1739        
6 A' 1543 1485        
7 A' 1519 1462        
8 A' 1452 1398        
9 A' 1413 1360        
10 A' 1408 1355        
11 A' 1227 1181        
12 A' 1150 1107        
13 A' 1055 1015        
14 A' 876 844        
15 A' 794 764        
16 A' 387 372        
17 A' 236 227        
18 A" 3126 3009        
19 A" 3098 2982        
20 A" 1509 1452        
21 A" 1316 1267        
22 A" 1200 1155        
23 A" 1033 994        
24 A" 816 786        
25 A" 343 330        
26 A" 242 233        
27 A" 72 69        

Unscaled Zero Point Vibrational Energy (zpe) 19938.1 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 19192.4 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 CCSD(T)/6-311G*
ABC
0.58933 0.09685 0.08587

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.178 -0.261 0.000
C2 -0.691 -0.562 0.000
O3 0.000 0.711 0.000
C4 1.340 0.617 0.000
O5 1.979 -0.406 0.000
H6 -2.749 -1.199 0.000
H7 -2.456 0.315 0.890
H8 -2.456 0.315 -0.890
H9 -0.384 -1.130 -0.887
H10 -0.384 -1.130 0.887
H11 1.774 1.630 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51762.38563.62704.15961.09761.09621.09622.18242.18244.3823
C21.51761.44872.34912.67422.15422.16272.16271.09691.09693.2996
O32.38561.44871.34382.27203.34742.64222.64222.07932.07931.9986
C43.62702.34911.34381.20574.47473.91123.91122.61012.61011.1024
O54.15962.67422.27201.20574.79374.58014.58012.62502.62502.0466
H61.09762.15423.34744.47474.79371.78051.78052.52712.52715.3355
H71.09622.16272.64223.91124.58011.78051.78053.08882.52664.5189
H81.09622.16272.64223.91124.58011.78051.78052.52663.08884.5189
H92.18241.09692.07932.61012.62502.52713.08882.52661.77323.6147
H102.18241.09692.07932.61012.62502.52712.52663.08881.77323.6147
H114.38233.29961.99861.10242.04665.33554.51894.51893.61473.6147

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 107.053 C1 C2 H9 112.174
C1 C2 H10 112.174 C2 C1 H6 109.886
C2 C1 H7 110.636 C2 C1 H8 110.636
C2 O3 C4 114.492 O3 C2 H9 108.749
O3 C2 H10 108.749 O3 C4 O5 125.952
O3 C4 H11 109.180 O5 C4 H11 124.868
H6 C1 H7 108.507 H6 C1 H8 108.507
H7 C1 H8 108.607 H9 C2 H10 107.851
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability