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

using model chemistry: mPW1PW91/6-31+G**

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 mPW1PW91/6-31+G**
 hartrees
Energy at 0K-268.329971
Energy at 298.15K-268.337147
HF Energy-268.329971
Nuclear repulsion energy177.804308
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 mPW1PW91/6-31+G**
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' 3164 3012 18.15      
2 A' 3100 2950 38.12      
3 A' 3095 2946 29.52      
4 A' 3080 2931 15.45      
5 A' 1834 1746 365.07      
6 A' 1523 1450 8.90      
7 A' 1506 1434 3.22      
8 A' 1438 1368 18.09      
9 A' 1408 1340 1.14      
10 A' 1396 1328 0.40      
11 A' 1256 1195 411.26      
12 A' 1144 1089 9.60      
13 A' 1054 1003 23.42      
14 A' 872 830 11.12      
15 A' 797 758 2.59      
16 A' 383 364 5.95      
17 A' 224 213 8.15      
18 A" 3173 3021 29.13      
19 A" 3143 2992 4.42      
20 A" 1494 1422 8.68      
21 A" 1305 1242 1.34      
22 A" 1183 1126 4.82      
23 A" 1046 996 0.00      
24 A" 812 773 0.87      
25 A" 354 336 23.86      
26 A" 234 223 2.45      
27 A" 60 57 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 20038.3 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 19072.4 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 mPW1PW91/6-31+G**
ABC
0.60102 0.09655 0.08586

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.176 -0.278 0.000
C2 -0.695 -0.569 0.000
O3 0.000 0.695 0.000
C4 1.331 0.632 0.000
O5 1.990 -0.377 0.000
H6 -2.734 -1.217 0.000
H7 -2.463 0.292 0.886
H8 -2.463 0.292 -0.886
H9 -0.386 -1.134 -0.883
H10 -0.386 -1.134 0.883
H11 1.746 1.649 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50922.38313.62314.16681.09301.09221.09222.17192.17194.3691
C21.50921.44232.35532.69152.13992.15752.15751.09301.09303.2978
O32.38311.44231.33302.26063.33642.64862.64862.06752.06751.9894
C43.62312.35531.33301.20514.46643.91173.91172.61682.61681.0983
O54.16682.69152.26061.20514.79824.58974.58972.64502.64502.0412
H61.09302.13993.33644.46644.79821.77121.77122.51042.51045.3183
H71.09222.15752.64863.91174.58971.77121.77243.07932.52034.5102
H81.09222.15752.64863.91174.58971.77121.77242.52033.07934.5102
H92.17191.09302.06752.61682.64502.51043.07932.52031.76603.6152
H102.17191.09302.06752.61682.64502.51042.52033.07931.76603.6152
H114.36913.29781.98941.09832.04125.31834.51024.51023.61523.6152

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 107.664 C1 C2 H9 112.166
C1 C2 H10 112.166 C2 C1 H6 109.604
C2 C1 H7 111.050 C2 C1 H8 111.050
C2 O3 C4 116.080 O3 C2 H9 108.482
O3 C2 H10 108.482 O3 C4 O5 125.835
O3 C4 H11 109.440 O5 C4 H11 124.724
H6 C1 H7 108.294 H6 C1 H8 108.294
H7 C1 H8 108.461 H9 C2 H10 107.768
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.605      
2 C -0.088      
3 O -0.251      
4 C 0.327      
5 O -0.438      
6 H 0.177      
7 H 0.185      
8 H 0.185      
9 H 0.183      
10 H 0.183      
11 H 0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.184 0.562 0.000 2.255
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.460 5.194 0.000
y 5.194 -29.519 0.000
z 0.000 0.000 -29.457
Traceless
 xyz
x -3.972 5.194 0.000
y 5.194 1.939 0.000
z 0.000 0.000 2.032
Polar
3z2-r24.065
x2-y2-3.941
xy5.194
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.736 0.054 0.000
y 0.054 6.281 0.000
z 0.000 0.000 4.865


<r2> (average value of r2) Å2
<r2> 135.693
(<r2>)1/2 11.649