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

using model chemistry: HSEh1PBE/3-21G*

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/3-21G*
 hartrees
Energy at 0K-266.621684
Energy at 298.15K-266.628769
HF Energy-266.621684
Nuclear repulsion energy175.947876
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/3-21G*
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 3037 14.08      
2 A' 3097 2973 4.12      
3 A' 3095 2971 66.50      
4 A' 3086 2962 9.87      
5 A' 1764 1693 198.47      
6 A' 1572 1509 11.99      
7 A' 1561 1498 5.31      
8 A' 1464 1405 15.24      
9 A' 1409 1353 5.64      
10 A' 1405 1349 4.16      
11 A' 1192 1144 356.30      
12 A' 1151 1105 8.06      
13 A' 1042 1000 15.24      
14 A' 850 816 6.74      
15 A' 791 759 3.83      
16 A' 370 355 9.40      
17 A' 218 210 7.34      
18 A" 3176 3048 22.99      
19 A" 3139 3013 6.54      
20 A" 1549 1487 8.89      
21 A" 1317 1264 0.00      
22 A" 1193 1145 7.20      
23 A" 1055 1013 0.11      
24 A" 844 810 2.84      
25 A" 347 333 26.88      
26 A" 227 218 2.05      
27 A" 34 32 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 20055.5 cm-1
Scaled (by 0.9599) Zero Point Vibrational Energy (zpe) 19251.3 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/3-21G*
ABC
0.57454 0.09570 0.08465

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.187 -0.245 0.000
C2 -0.709 -0.586 0.000
O3 0.000 0.714 0.000
C4 1.359 0.627 0.000
O5 1.990 -0.418 0.000
H6 -2.786 -1.162 0.000
H7 -2.436 0.342 0.888
H8 -2.436 0.342 -0.888
H9 -0.409 -1.153 -0.886
H10 -0.409 -1.153 0.886
H11 1.774 1.640 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 C4 O5 H6 H7 H8 H9 H10 H11
C11.51622.38813.65204.18101.09481.09361.09362.18372.18374.3865
C21.51621.48052.39782.70512.15492.15202.15201.09421.09423.3343
O32.38811.48051.36232.28973.35852.61942.61942.10652.10652.0009
C43.65202.39781.36231.22024.51463.90843.90842.66082.66081.0944
O54.18102.70512.28971.22024.83394.57844.57842.66172.66172.0687
H61.09482.15493.35854.51464.83391.78141.78142.53642.53645.3515
H71.09362.15202.61943.90844.57841.78141.77593.08082.51874.4940
H81.09362.15202.61943.90844.57841.78141.77592.51873.08084.4940
H92.18371.09422.10652.66082.66172.53643.08082.51871.77233.6536
H102.18371.09422.10652.66082.66172.53642.51873.08081.77233.6536
H114.38653.33432.00091.09442.06875.35154.49404.49403.65363.6536

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 105.667 C1 C2 H9 112.557
C1 C2 H10 112.557 C2 C1 H6 110.202
C2 C1 H7 110.039 C2 C1 H8 110.039
C2 O3 C4 114.955 O3 C2 H9 108.884
O3 C2 H10 108.884 O3 C4 O5 124.817
O3 C4 H11 108.576 O5 C4 H11 126.607
H6 C1 H7 108.979 H6 C1 H8 108.979
H7 C1 H8 108.565 H9 C2 H10 108.174
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.652      
2 C -0.209      
3 O -0.501      
4 C 0.436      
5 O -0.473      
6 H 0.221      
7 H 0.236      
8 H 0.236      
9 H 0.242      
10 H 0.242      
11 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.812 0.379 0.000 1.851
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.203 5.042 0.000
y 5.042 -29.240 0.000
z 0.000 0.000 -29.091
Traceless
 xyz
x -3.038 5.042 0.000
y 5.042 1.407 0.000
z 0.000 0.000 1.630
Polar
3z2-r23.260
x2-y2-2.963
xy5.042
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.492 0.294 0.000
y 0.294 5.166 0.000
z 0.000 0.000 3.703


<r2> (average value of r2) Å2
<r2> 136.788
(<r2>)1/2 11.696