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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-268.198462
Energy at 298.15K-268.205647
HF Energy-268.198462
Nuclear repulsion energy178.488266
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 HSEh1PBE/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' 3134 3134 17.07      
2 A' 3065 3065 10.51      
3 A' 3056 3056 12.67      
4 A' 3045 3045 58.05      
5 A' 1827 1827 345.51      
6 A' 1514 1514 9.73      
7 A' 1493 1493 2.59      
8 A' 1423 1423 12.55      
9 A' 1401 1401 1.30      
10 A' 1388 1388 0.29      
11 A' 1242 1242 403.83      
12 A' 1139 1139 8.95      
13 A' 1050 1050 23.58      
14 A' 869 869 10.01      
15 A' 801 801 2.24      
16 A' 383 383 5.71      
17 A' 226 226 7.48      
18 A" 3139 3139 27.61      
19 A" 3104 3104 4.55      
20 A" 1481 1481 7.46      
21 A" 1298 1298 1.46      
22 A" 1178 1178 3.96      
23 A" 1051 1051 0.01      
24 A" 806 806 1.09      
25 A" 353 353 20.82      
26 A" 232 232 2.04      
27 A" 59 59 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 19877.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19877.7 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 HSEh1PBE/6-311+G(3df,2p)
ABC
0.60537 0.09730 0.08653

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.168 -0.285 0.000
C2 -0.690 -0.566 0.000
O3 0.000 0.695 0.000
C4 1.326 0.631 0.000
O5 1.980 -0.371 0.000
H6 -2.721 -1.225 0.000
H7 -2.459 0.283 0.884
H8 -2.459 0.283 -0.884
H9 -0.378 -1.132 -0.880
H10 -0.378 -1.132 0.880
H11 1.741 1.649 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.50482.37883.61204.14901.09091.09031.09032.16682.16684.3605
C21.50481.43742.34452.67712.13522.15252.15251.09161.09163.2883
O32.37881.43741.32782.24873.32992.64532.64532.06262.06261.9849
C43.61202.34451.32781.19614.45223.90263.90262.60512.60511.0991
O54.14902.67712.24871.19614.77804.57334.57332.63002.63002.0336
H61.09092.13523.32994.45224.77801.76751.76752.50422.50425.3068
H71.09032.15252.64533.90264.57331.76751.76883.07312.51594.5037
H81.09032.15252.64533.90264.57331.76751.76882.51593.07314.5037
H92.16681.09162.06262.60512.63002.50423.07312.51591.76063.6050
H102.16681.09162.06262.60512.63002.50422.51593.07311.76063.6050
H114.36053.28831.98491.09912.03365.30684.50374.50373.60503.6050

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 107.880 C1 C2 H9 112.160
C1 C2 H10 112.160 C2 C1 H6 109.666
C2 C1 H7 111.077 C2 C1 H8 111.077
C2 O3 C4 115.904 O3 C2 H9 108.517
O3 C2 H10 108.517 O3 C4 O5 125.918
O3 C4 H11 109.380 O5 C4 H11 124.702
H6 C1 H7 108.260 H6 C1 H8 108.260
H7 C1 H8 108.411 H9 C2 H10 107.498
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.392      
2 C 0.105      
3 O -0.536      
4 C 0.645      
5 O -0.613      
6 H 0.128      
7 H 0.132      
8 H 0.132      
9 H 0.140      
10 H 0.140      
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
  -2.135 0.577 0.000 2.212
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.348 4.903 0.000
y 4.903 -29.497 0.000
z 0.000 0.000 -29.428
Traceless
 xyz
x -3.885 4.903 0.000
y 4.903 1.891 0.000
z 0.000 0.000 1.994
Polar
3z2-r23.988
x2-y2-3.850
xy4.903
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.324 0.211 0.000
y 0.211 6.670 0.000
z 0.000 0.000 5.325


<r2> (average value of r2) Å2
<r2> 134.811
(<r2>)1/2 11.611