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

using model chemistry: B3PW91/6-311+G(3df,2p)

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 B3PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-268.378090
Energy at 298.15K-268.385251
HF Energy-268.378090
Nuclear repulsion energy178.092029
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 B3PW91/6-311+G(3df,2p)
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' 3121 2988 17.71      
2 A' 3056 2925 10.78      
3 A' 3045 2915 13.26      
4 A' 3032 2903 58.44      
5 A' 1812 1734 340.43      
6 A' 1511 1447 9.50      
7 A' 1492 1429 2.57      
8 A' 1419 1358 12.08      
9 A' 1397 1337 1.32      
10 A' 1387 1327 0.88      
11 A' 1226 1173 398.65      
12 A' 1133 1085 9.03      
13 A' 1039 995 23.24      
14 A' 862 825 10.65      
15 A' 794 760 1.82      
16 A' 380 364 5.48      
17 A' 224 214 7.41      
18 A" 3128 2995 28.52      
19 A" 3094 2962 4.09      
20 A" 1480 1417 7.25      
21 A" 1295 1239 1.37      
22 A" 1174 1124 3.91      
23 A" 1043 999 0.00      
24 A" 806 772 1.08      
25 A" 350 335 20.66      
26 A" 230 220 2.02      
27 A" 58 56 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 19794.2 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 18949.0 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 B3PW91/6-311+G(3df,2p)
ABC
0.60478 0.09666 0.08601

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.174 -0.287 0.000
C2 -0.693 -0.569 0.000
O3 0.000 0.695 0.000
C4 1.330 0.633 0.000
O5 1.989 -0.367 0.000
H6 -2.726 -1.228 0.000
H7 -2.466 0.280 0.885
H8 -2.466 0.280 -0.885
H9 -0.383 -1.134 -0.881
H10 -0.383 -1.134 0.881
H11 1.740 1.653 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50742.38513.62214.16321.09111.09041.09042.16872.16874.3678
C21.50741.44162.35302.68932.13682.15552.15551.09151.09153.2949
O32.38511.44161.33102.25453.33572.65232.65232.06572.06571.9861
C43.62212.35301.33101.19784.46203.91313.91312.61322.61321.0993
O54.16322.68932.25451.19784.79244.58744.58742.64292.64292.0354
H61.09112.13683.33574.46204.79241.76751.76752.50532.50535.3141
H71.09042.15552.65233.91314.58741.76751.76913.07522.51824.5115
H81.09042.15552.65233.91314.58741.76751.76912.51823.07524.5115
H92.16871.09152.06572.61322.64292.50533.07522.51821.76133.6120
H102.16871.09152.06572.61322.64292.50532.51823.07521.76133.6120
H114.36783.29491.98611.09932.03545.31414.51154.51153.61203.6120

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 107.938 C1 C2 H9 112.128
C1 C2 H10 112.128 C2 C1 H6 109.597
C2 C1 H7 111.130 C2 C1 H8 111.130
C2 O3 C4 116.072 O3 C2 H9 108.479
O3 C2 H10 108.479 O3 C4 O5 126.046
O3 C4 H11 109.240 O5 C4 H11 124.713
H6 C1 H7 108.232 H6 C1 H8 108.232
H7 C1 H8 108.426 H9 C2 H10 107.577
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.408      
2 C 0.104      
3 O -0.531      
4 C 0.635      
5 O -0.608      
6 H 0.131      
7 H 0.135      
8 H 0.135      
9 H 0.142      
10 H 0.142      
11 H 0.121      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.158 0.556 0.000 2.229
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.303 4.883 0.000
y 4.883 -29.408 0.000
z 0.000 0.000 -29.340
Traceless
 xyz
x -3.929 4.883 0.000
y 4.883 1.914 0.000
z 0.000 0.000 2.015
Polar
3z2-r24.030
x2-y2-3.895
xy4.883
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.378 0.219 0.000
y 0.219 6.680 0.000
z 0.000 0.000 5.323


<r2> (average value of r2) Å2
<r2> 135.421
(<r2>)1/2 11.637