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

using model chemistry: MP3=FULL/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 MP3=FULL/6-311G*
 hartrees
Energy at 0K-267.795386
Energy at 298.15K-267.802695
HF Energy-266.889875
Nuclear repulsion energy178.494345
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/6-311G*
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' 3171 3171 22.13      
2 A' 3118 3118 52.21      
3 A' 3110 3110 22.88      
4 A' 3089 3089 14.29      
5 A' 1897 1897 319.57      
6 A' 1566 1566 9.20      
7 A' 1537 1537 3.72      
8 A' 1474 1474 21.43      
9 A' 1446 1446 2.68      
10 A' 1436 1436 0.14      
11 A' 1283 1283 448.62      
12 A' 1172 1172 11.41      
13 A' 1084 1084 15.63      
14 A' 904 904 10.59      
15 A' 819 819 4.29      
16 A' 396 396 6.78      
17 A' 242 242 7.03      
18 A" 3180 3180 37.46      
19 A" 3152 3152 5.88      
20 A" 1525 1525 8.22      
21 A" 1342 1342 1.49      
22 A" 1218 1218 4.98      
23 A" 1075 1075 0.14      
24 A" 829 829 0.39      
25 A" 345 345 23.76      
26 A" 246 246 3.02      
27 A" 80 80 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 20368.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20368.1 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/6-311G*
ABC
0.60131 0.09770 0.08677

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.169 -0.273 0.000
C2 -0.683 -0.564 0.000
O3 0.000 0.700 0.000
C4 1.329 0.622 0.000
O5 1.971 -0.385 0.000
H6 -2.733 -1.209 0.000
H7 -2.449 0.301 0.886
H8 -2.449 0.301 -0.886
H9 -0.377 -1.131 -0.882
H10 -0.377 -1.131 0.882
H11 1.757 1.633 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51402.37713.61114.14121.09291.09191.09192.17392.17394.3643
C21.51401.43652.33612.66002.14872.15652.15651.09281.09283.2837
O32.37711.43651.33172.24953.33352.63492.63492.06732.06731.9897
C43.61112.33611.33171.19394.45593.89443.89442.60112.60111.0978
O54.14122.66002.24951.19394.77524.55964.55962.61702.61702.0294
H61.09292.14873.33354.45594.77521.77331.77332.51652.51655.3139
H71.09192.15652.63493.89444.55961.77331.77223.07732.51854.5004
H81.09192.15652.63493.89444.55961.77331.77222.51853.07734.5004
H92.17391.09282.06732.60112.61702.51653.07732.51851.76463.6023
H102.17391.09282.06732.60112.61702.51652.51853.07731.76463.6023
H114.36433.28371.98971.09782.02945.31394.50044.50043.60233.6023

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 107.320 C1 C2 H9 111.999
C1 C2 H10 111.999 C2 C1 H6 109.974
C2 C1 H7 110.651 C2 C1 H8 110.651
C2 O3 C4 115.060 O3 C2 H9 108.884
O3 C2 H10 108.884 O3 C4 O5 125.829
O3 C4 H11 109.590 O5 C4 H11 124.581
H6 C1 H7 108.509 H6 C1 H8 108.509
H7 C1 H8 108.482 H9 C2 H10 107.685
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability