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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-268.064279
Energy at 298.15K-268.071333
HF Energy-268.064279
Nuclear repulsion energy176.200815
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 PBEPBEultrafine/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' 3078 3028 18.16      
2 A' 3001 2952 15.85      
3 A' 2999 2950 10.85      
4 A' 2972 2923 78.58      
5 A' 1775 1746 248.88      
6 A' 1494 1469 6.69      
7 A' 1477 1453 2.89      
8 A' 1398 1375 13.99      
9 A' 1365 1342 0.71      
10 A' 1355 1332 6.17      
11 A' 1175 1156 328.87      
12 A' 1112 1093 9.99      
13 A' 1017 1001 22.57      
14 A' 837 823 8.85      
15 A' 771 758 1.97      
16 A' 370 364 5.86      
17 A' 220 216 6.39      
18 A" 3084 3034 27.96      
19 A" 3043 2993 10.81      
20 A" 1469 1445 6.52      
21 A" 1263 1242 0.54      
22 A" 1150 1131 4.71      
23 A" 984 968 0.01      
24 A" 791 778 1.44      
25 A" 354 349 17.20      
26 A" 237 233 1.59      
27 A" 52 51 0.54      

Unscaled Zero Point Vibrational Energy (zpe) 19421.9 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 19101.4 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 PBEPBEultrafine/6-31G*
ABC
0.58362 0.09534 0.08459

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.191 -0.264 0.000
C2 -0.703 -0.563 0.000
O3 0.000 0.714 0.000
C4 1.349 0.620 0.000
O5 2.000 -0.408 0.000
H6 -2.761 -1.208 0.000
H7 -2.478 0.314 0.894
H8 -2.478 0.314 -0.894
H9 -0.390 -1.137 -0.890
H10 -0.390 -1.137 0.890
H11 1.772 1.648 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51782.39903.64824.19281.10291.10231.10232.18992.18994.3993
C21.51781.45752.36832.70682.15682.17252.17251.10371.10373.3182
O32.39901.45751.35192.29263.36382.66462.66462.08982.08982.0027
C43.64822.36831.35191.21684.49793.94183.94182.62702.62701.1112
O54.19282.70682.29261.21684.82724.62274.62272.65202.65202.0683
H61.10292.15683.36384.49794.82721.78741.78742.53322.53325.3571
H71.10232.17252.66463.94184.62271.78741.78783.10562.54234.5429
H81.10232.17252.66463.94184.62271.78741.78782.54233.10564.5429
H92.18991.10372.08982.62702.65202.53323.10562.54231.77943.6355
H102.18991.10372.08982.62702.65202.53322.54233.10561.77943.6355
H114.39933.31822.00271.11122.06835.35714.54294.54293.63553.6355

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 107.455 C1 C2 H9 112.345
C1 C2 H10 112.345 C2 C1 H6 109.747
C2 C1 H7 111.031 C2 C1 H8 111.031
C2 O3 C4 114.864 O3 C2 H9 108.576
O3 C2 H10 108.576 O3 C4 O5 126.302
O3 C4 H11 108.399 O5 C4 H11 125.299
H6 C1 H7 108.288 H6 C1 H8 108.288
H7 C1 H8 108.367 H9 C2 H10 107.435
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.505      
2 C -0.094      
3 O -0.362      
4 C 0.328      
5 O -0.387      
6 H 0.170      
7 H 0.178      
8 H 0.178      
9 H 0.177      
10 H 0.177      
11 H 0.140      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.010 0.450 0.000 2.060
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.318 4.372 0.000
y 4.372 -29.157 0.000
z 0.000 0.000 -29.063
Traceless
 xyz
x -3.208 4.372 0.000
y 4.372 1.533 0.000
z 0.000 0.000 1.674
Polar
3z2-r23.349
x2-y2-3.161
xy4.372
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.338 0.325 0.000
y 0.325 5.790 0.000
z 0.000 0.000 4.297


<r2> (average value of r2) Å2
<r2> 137.028
(<r2>)1/2 11.706