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

using model chemistry: BLYP/6-31G(2df,p)

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 BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-268.314166
Energy at 298.15K-268.321150
HF Energy-268.314166
Nuclear repulsion energy175.657603
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 BLYP/6-31G(2df,p)
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' 3043 3026 22.01      
2 A' 2976 2960 16.92      
3 A' 2974 2958 12.72      
4 A' 2929 2913 74.73      
5 A' 1743 1733 238.92      
6 A' 1477 1469 5.38      
7 A' 1457 1449 2.70      
8 A' 1378 1370 5.70      
9 A' 1362 1354 0.69      
10 A' 1350 1342 11.16      
11 A' 1134 1128 325.92      
12 A' 1095 1089 11.90      
13 A' 988 982 22.08      
14 A' 813 808 12.61      
15 A' 757 753 0.64      
16 A' 363 361 4.75      
17 A' 215 214 5.88      
18 A" 3050 3033 33.85      
19 A" 3012 2995 8.53      
20 A" 1449 1442 3.91      
21 A" 1249 1242 0.80      
22 A" 1146 1139 3.95      
23 A" 993 987 0.04      
24 A" 786 782 0.70      
25 A" 342 341 15.85      
26 A" 221 220 1.19      
27 A" 42 42 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 19171.5 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 19066.1 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 BLYP/6-31G(2df,p)
ABC
0.58613 0.09415 0.08369

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.203 -0.275 0.000
C2 -0.707 -0.575 0.000
O3 0.000 0.710 0.000
C4 1.354 0.629 0.000
O5 2.015 -0.388 0.000
H6 -2.771 -1.218 0.000
H7 -2.490 0.302 0.892
H8 -2.490 0.302 -0.892
H9 -0.395 -1.146 -0.889
H10 -0.395 -1.146 0.889
H11 1.759 1.661 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.52582.41303.67034.21961.10101.10031.10032.19522.19524.4102
C21.52581.46692.38752.72862.16102.17812.17811.10131.10133.3299
O32.41301.46691.35662.29453.37532.67632.67632.09532.09532.0003
C43.67032.38751.35661.21274.51943.95993.95992.64582.64581.1093
O54.21962.72862.29451.21274.85694.64394.64392.67802.67802.0654
H61.10102.16103.37534.51944.85691.78471.78472.53732.53735.3677
H71.10032.17812.67633.95994.64391.78471.78463.10762.54684.5499
H81.10032.17812.67633.95994.64391.78471.78462.54683.10764.5499
H92.19521.10132.09532.64582.67802.53733.10762.54681.77713.6489
H102.19521.10132.09532.64582.67802.53732.54683.10761.77713.6489
H114.41023.32992.00031.10932.06545.36774.54994.54993.64893.6489

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 107.452 C1 C2 H9 112.347
C1 C2 H10 112.347 C2 C1 H6 109.647
C2 C1 H7 111.031 C2 C1 H8 111.031
C2 O3 C4 115.409 O3 C2 H9 108.502
O3 C2 H10 108.502 O3 C4 O5 126.428
O3 C4 H11 108.008 O5 C4 H11 125.565
H6 C1 H7 108.337 H6 C1 H8 108.337
H7 C1 H8 108.374 H9 C2 H10 107.574
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.352      
2 C -0.030      
3 O -0.155      
4 C 0.148      
5 O -0.269      
6 H 0.111      
7 H 0.118      
8 H 0.118      
9 H 0.112      
10 H 0.112      
11 H 0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.008 0.442 0.000 2.056
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.579 4.181 0.000
y 4.181 -29.217 0.000
z 0.000 0.000 -29.026
Traceless
 xyz
x -3.457 4.181 0.000
y 4.181 1.585 0.000
z 0.000 0.000 1.872
Polar
3z2-r23.744
x2-y2-3.362
xy4.181
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.747 0.430 0.000
y 0.430 6.039 0.000
z 0.000 0.000 4.626


<r2> (average value of r2) Å2
<r2> 138.270
(<r2>)1/2 11.759