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

using model chemistry: MP2=FULL/STO-3G

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 MP2=FULL/STO-3G
 hartrees
Energy at 0K-263.652136
Energy at 298.15K-263.658980
HF Energy-263.376279
Nuclear repulsion energy173.064527
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 MP2=FULL/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3563 3167 0.98      
2 A' 3382 3007 1.09      
3 A' 3353 2980 4.38      
4 A' 3347 2976 22.06      
5 A' 1810 1609 104.83      
6 A' 1733 1540 4.59      
7 A' 1707 1518 5.93      
8 A' 1615 1435 1.23      
9 A' 1531 1361 45.40      
10 A' 1470 1307 7.78      
11 A' 1298 1154 101.87      
12 A' 1219 1084 32.63      
13 A' 1137 1011 25.41      
14 A' 961 854 7.68      
15 A' 767 681 7.36      
16 A' 380 338 2.97      
17 A' 234 208 2.81      
18 A" 3567 3171 1.46      
19 A" 3459 3075 7.63      
20 A" 1719 1528 1.22      
21 A" 1406 1249 0.13      
22 A" 1265 1125 7.02      
23 A" 961 854 0.07      
24 A" 884 786 0.20      
25 A" 315 280 9.64      
26 A" 205 182 0.46      
27 A" 61 54 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 21674.1 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 19266.1 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 MP2=FULL/STO-3G
ABC
0.53281 0.09426 0.08263

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.224 -0.233 0.000
C2 -0.692 -0.516 0.000
O3 0.000 0.786 0.000
C4 1.399 0.589 0.000
O5 1.978 -0.525 0.000
H6 -2.780 -1.186 0.000
H7 -2.510 0.343 0.896
H8 -2.510 0.343 -0.896
H9 -0.406 -1.113 -0.896
H10 -0.406 -1.113 0.896
H11 1.889 1.597 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.55802.44653.71524.21291.10311.10281.10282.21002.21004.5018
C21.55801.47372.36462.67062.19292.20112.20111.11441.11443.3353
O32.44651.47371.41262.37303.40822.70162.70162.13802.13802.0557
C43.71522.36461.41261.25544.54014.01774.01772.63722.63721.1211
O54.21292.67062.37301.25544.80414.65864.65862.61412.61412.1240
H61.10312.19293.40824.54014.80411.79271.79272.53882.53885.4353
H71.10282.20112.70164.01774.65861.79271.79133.12392.55894.6608
H81.10282.20112.70164.01774.65861.79271.79132.55893.12394.6608
H92.21001.11442.13802.63722.61412.53883.12392.55891.79263.6621
H102.21001.11442.13802.63722.61412.53882.55893.12391.79263.6621
H114.50183.33532.05571.12112.12405.43534.66084.66083.66213.6621

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 107.567 C1 C2 H9 110.477
C1 C2 H10 110.477 C2 C1 H6 109.801
C2 C1 H7 110.462 C2 C1 H8 110.462
C2 O3 C4 110.006 O3 C2 H9 110.633
O3 C2 H10 110.633 O3 C4 O5 125.501
O3 C4 H11 107.902 O5 C4 H11 126.597
H6 C1 H7 108.722 H6 C1 H8 108.722
H7 C1 H8 108.625 H9 C2 H10 107.082
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability