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

using model chemistry: B2PLYP=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 B2PLYP=FULL/3-21G*
 hartrees
Energy at 0K-266.551643
Energy at 298.15K-266.558707
HF Energy-266.370814
Nuclear repulsion energy174.912730
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=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' 3164 3164 17.79      
2 A' 3108 3108 6.59      
3 A' 3104 3104 66.61      
4 A' 3095 3095 11.23      
5 A' 1699 1699 170.98      
6 A' 1597 1597 11.37      
7 A' 1585 1585 5.55      
8 A' 1485 1485 8.82      
9 A' 1424 1424 13.75      
10 A' 1415 1415 6.95      
11 A' 1164 1164 287.72      
12 A' 1153 1153 81.19      
13 A' 1022 1022 11.55      
14 A' 832 832 8.62      
15 A' 778 778 3.09      
16 A' 367 367 8.06      
17 A' 216 216 6.96      
18 A" 3179 3179 29.67      
19 A" 3148 3148 6.02      
20 A" 1575 1575 6.45      
21 A" 1329 1329 0.00      
22 A" 1205 1205 6.08      
23 A" 1047 1047 0.07      
24 A" 854 854 1.50      
25 A" 340 340 25.77      
26 A" 232 232 2.24      
27 A" 32 32 0.28      

Unscaled Zero Point Vibrational Energy (zpe) 20072.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20072.3 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=FULL/3-21G*
ABC
0.56865 0.09441 0.08350

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.201 -0.236 0.000
C2 -0.719 -0.591 0.000
O3 0.000 0.718 0.000
C4 1.372 0.625 0.000
O5 2.005 -0.427 0.000
H6 -2.806 -1.147 0.000
H7 -2.443 0.352 0.887
H8 -2.443 0.352 -0.887
H9 -0.423 -1.156 -0.885
H10 -0.423 -1.156 0.885
H11 1.786 1.636 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.52452.39963.67574.21121.09291.09141.09142.18922.18924.4051
C21.52451.49322.41842.72902.16012.15622.15621.09141.09143.3510
O32.39961.49321.37492.30953.36942.62502.62502.11572.11572.0078
C43.67572.41841.37491.22874.53813.92643.92642.67932.67931.0918
O54.21122.72902.30951.22874.86484.60284.60282.68552.68552.0745
H61.09292.16013.36944.53814.86481.77911.77912.54212.54215.3692
H71.09142.15622.62503.92644.60281.77911.77333.08172.52144.5079
H81.09142.15622.62503.92644.60281.77911.77332.52143.08174.5079
H92.18921.09142.11572.67932.68552.54213.08172.52141.77063.6684
H102.18921.09142.11572.67932.68552.54212.52143.08171.77063.6684
H114.40513.35102.00781.09182.07455.36924.50794.50793.66843.6684

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 105.344 C1 C2 H9 112.576
C1 C2 H10 112.576 C2 C1 H6 110.144
C2 C1 H7 109.931 C2 C1 H8 109.931
C2 O3 C4 114.899 O3 C2 H9 108.897
O3 C2 H10 108.897 O3 C4 O5 124.917
O3 C4 H11 108.423 O5 C4 H11 126.659
H6 C1 H7 109.071 H6 C1 H8 109.071
H7 C1 H8 108.663 H9 C2 H10 108.418
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability