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

using model chemistry: TPSSh/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 TPSSh/6-31G
 hartrees
Energy at 0K-268.303144
Energy at 298.15K-268.310153
HF Energy-268.303144
Nuclear repulsion energy174.492312
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 TPSSh/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' 3142 3023 26.13      
2 A' 3131 3012 52.38      
3 A' 3084 2967 11.09      
4 A' 3062 2946 19.00      
5 A' 1686 1622 233.00      
6 A' 1561 1502 9.85      
7 A' 1550 1491 3.95      
8 A' 1468 1413 8.68      
9 A' 1410 1357 9.88      
10 A' 1391 1338 11.95      
11 A' 1154 1110 331.66      
12 A' 1149 1106 28.87      
13 A' 1034 995 20.08      
14 A' 810 780 13.88      
15 A' 758 729 1.13      
16 A' 362 349 7.10      
17 A' 207 199 7.70      
18 A" 3163 3043 44.37      
19 A" 3133 3014 3.17      
20 A" 1540 1482 7.16      
21 A" 1304 1254 0.11      
22 A" 1187 1142 6.90      
23 A" 1009 970 0.32      
24 A" 830 799 1.36      
25 A" 342 329 29.89      
26 A" 217 209 2.00      
27 A" 40 38 0.56      

Unscaled Zero Point Vibrational Energy (zpe) 19862.0 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 19109.2 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 TPSSh/6-31G
ABC
0.57564 0.09309 0.08263

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.209 -0.254 0.000
C2 -0.730 -0.594 0.000
O3 0.000 0.709 0.000
C4 1.368 0.639 0.000
O5 2.029 -0.405 0.000
H6 -2.800 -1.176 0.000
H7 -2.473 0.328 0.888
H8 -2.473 0.328 -0.888
H9 -0.420 -1.152 -0.888
H10 -0.420 -1.152 0.888
H11 1.781 1.649 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51752.40983.68724.24091.09541.09351.09352.18982.18984.4208
C21.51751.49322.43372.76562.15062.16222.16221.09331.09333.3670
O32.40981.49321.37022.31463.37562.65512.65512.10372.10372.0140
C43.68722.43371.37021.23524.54673.95513.95512.68172.68171.0917
O54.24092.76562.31461.23524.89064.64704.64702.70982.70982.0694
H61.09542.15063.37564.54674.89061.77651.77652.54072.54075.3825
H71.09352.16222.65513.95514.64701.77651.77513.09122.53074.5422
H81.09352.16222.65513.95514.64701.77651.77512.53073.09124.5422
H92.18981.09332.10372.68172.70982.54073.09122.53071.77513.6712
H102.18981.09332.10372.68172.70982.54072.53073.09121.77513.6712
H114.42083.36702.01401.09172.06945.38254.54224.54223.67123.6712

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 106.337 C1 C2 H9 113.004
C1 C2 H10 113.004 C2 C1 H6 109.732
C2 C1 H7 110.759 C2 C1 H8 110.759
C2 O3 C4 116.344 O3 C2 H9 107.846
O3 C2 H10 107.846 O3 C4 O5 125.264
O3 C4 H11 109.268 O5 C4 H11 125.469
H6 C1 H7 108.507 H6 C1 H8 108.507
H7 C1 H8 108.513 H9 C2 H10 108.543
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.458      
2 C -0.077      
3 O -0.478      
4 C 0.364      
5 O -0.416      
6 H 0.160      
7 H 0.175      
8 H 0.175      
9 H 0.188      
10 H 0.188      
11 H 0.179      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.152 0.362 0.000 2.182
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.150 0.224 0.000
y 0.224 5.623 0.000
z 0.000 0.000 4.027


<r2> (average value of r2) Å2
<r2> 139.712
(<r2>)1/2 11.820