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

using model chemistry: B3LYP/CEP-121G*

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 B3LYP/CEP-121G*
 hartrees
Energy at 0K-52.534152
Energy at 298.15K-52.541249
HF Energy-52.534152
Nuclear repulsion energy98.729750
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 B3LYP/CEP-121G*
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' 3101 3006 38.18      
2 A' 3052 2958 13.73      
3 A' 3037 2944 77.53      
4 A' 3029 2937 23.43      
5 A' 1765 1711 329.65      
6 A' 1524 1477 7.72      
7 A' 1504 1458 2.68      
8 A' 1432 1388 15.91      
9 A' 1400 1358 1.75      
10 A' 1389 1346 6.13      
11 A' 1198 1161 418.90      
12 A' 1123 1089 11.44      
13 A' 1014 983 22.82      
14 A' 845 819 16.41      
15 A' 772 749 0.99      
16 A' 371 360 5.42      
17 A' 221 214 7.39      
18 A" 3117 3022 62.82      
19 A" 3092 2997 0.67      
20 A" 1496 1450 6.23      
21 A" 1292 1252 1.06      
22 A" 1174 1138 3.89      
23 A" 1022 991 0.00      
24 A" 801 777 0.35      
25 A" 339 328 22.47      
26 A" 231 224 2.33      
27 A" 61 59 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 19700.8 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 19097.9 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 B3LYP/CEP-121G*
ABC
0.58894 0.09429 0.08385

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.202 -0.276 0.000
C2 -0.705 -0.581 0.000
O3 0.000 0.704 0.000
C4 1.350 0.636 0.000
O5 2.014 -0.381 0.000
H6 -2.769 -1.216 0.000
H7 -2.486 0.298 0.889
H8 -2.486 0.298 -0.889
H9 -0.396 -1.146 -0.887
H10 -0.396 -1.146 0.887
H11 1.765 1.658 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.52822.41063.66714.21711.09751.09631.09632.19212.19214.4138
C21.52821.46542.38732.72552.15972.17652.17651.09621.09623.3335
O32.41061.46541.35152.28773.36952.67142.67142.08982.08982.0064
C43.66712.38731.35151.21464.51553.95193.95192.64742.64741.1038
O54.21712.72552.28771.21464.85454.63684.63682.67922.67922.0549
H61.09752.15973.36954.51554.85451.77901.77902.53392.53395.3682
H71.09632.17652.67143.95194.63681.77901.77893.10002.54054.5511
H81.09632.17652.67143.95194.63681.77901.77892.54053.10004.5511
H92.19211.09622.08982.64742.67922.53393.10002.54051.77423.6499
H102.19211.09622.08982.64742.67922.53392.54053.10001.77423.6499
H114.41383.33352.00641.10382.05495.36824.55114.55113.64993.6499

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 107.249 C1 C2 H9 112.240
C1 C2 H10 112.240 C2 C1 H6 109.583
C2 C1 H7 110.986 C2 C1 H8 110.986
C2 O3 C4 115.825 O3 C2 H9 108.477
O3 C2 H10 108.477 O3 C4 O5 126.047
O3 C4 H11 109.194 O5 C4 H11 124.759
H6 C1 H7 108.378 H6 C1 H8 108.378
H7 C1 H8 108.451 H9 C2 H10 108.036
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.508      
2 C -0.142      
3 O -0.182      
4 C 0.134      
5 O -0.299      
6 H 0.169      
7 H 0.174      
8 H 0.174      
9 H 0.172      
10 H 0.172      
11 H 0.134      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.094 0.510 0.000 2.156
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.326 5.004 0.000
y 5.004 -29.429 0.000
z 0.000 0.000 -29.436
Traceless
 xyz
x -3.894 5.004 0.000
y 5.004 1.951 0.000
z 0.000 0.000 1.942
Polar
3z2-r23.884
x2-y2-3.897
xy5.004
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.625 0.252 0.000
y 0.252 6.252 0.000
z 0.000 0.000 4.839


<r2> (average value of r2) Å2
<r2> 112.957
(<r2>)1/2 10.628