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All results from a given calculation for CH3OCHO (methyl formate)

using model chemistry: HSEh1PBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/cc-pVTZ
 hartrees
Energy at 0K-228.915190
Energy at 298.15K-228.920079
HF Energy-228.915190
Nuclear repulsion energy122.919006
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/cc-pVTZ
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' 3179 3056 11.27      
2 A' 3067 2948 13.46      
3 A' 3051 2932 64.36      
4 A' 1834 1763 295.41      
5 A' 1495 1437 11.20      
6 A' 1466 1409 7.11      
7 A' 1399 1344 1.12      
8 A' 1253 1204 256.75      
9 A' 1192 1146 49.89      
10 A' 966 929 23.22      
11 A' 786 756 8.37      
12 A' 304 292 14.32      
13 A" 3144 3022 16.52      
14 A" 1481 1423 10.53      
15 A" 1178 1132 0.95      
16 A" 1050 1010 0.01      
17 A" 350 336 24.97      
18 A" 121 117 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 13658.4 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 13127.1 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/cc-pVTZ
ABC
0.67725 0.23217 0.17870

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.352 0.406 0.000
O2 0.000 0.868 0.000
C3 -0.925 -0.089 0.000
O4 -0.714 -1.266 0.000
H5 1.971 1.299 0.000
H6 1.549 -0.196 0.886
H7 1.549 -0.196 -0.886
H8 -1.922 0.372 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.42862.32992.65811.08621.08971.08973.2737
O21.42861.33092.25092.01732.07802.07801.9846
C32.32991.33091.19633.21102.62992.62991.0985
O42.65812.25091.19633.71342.65542.65542.0358
H51.08622.01733.21103.71341.78861.78864.0012
H61.08972.07802.62992.65541.78861.77243.6269
H71.08972.07802.62992.65541.78861.77243.6269
H83.27371.98461.09852.03584.00123.62693.6269

picture of methyl formate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 115.151 O2 C1 H5 105.872
O2 C1 H6 110.489 O2 C1 H7 110.489
O2 C3 O4 125.834 O2 C3 H8 109.183
O4 C3 H8 124.983 H5 C1 H6 110.575
H5 C1 H7 110.575 H6 C1 H7 108.828
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.102      
2 O -0.191      
3 C 0.229      
4 O -0.306      
5 H 0.109      
6 H 0.096      
7 H 0.096      
8 H 0.068      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.923 1.651 0.000 1.891
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.336 -1.194 0.000
y -1.194 -28.042 0.000
z 0.000 0.000 -22.932
Traceless
 xyz
x 6.151 -1.194 0.000
y -1.194 -6.908 0.000
z 0.000 0.000 0.757
Polar
3z2-r21.514
x2-y28.706
xy-1.194
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.353 0.306 0.000
y 0.306 4.820 0.000
z 0.000 0.000 3.441


<r2> (average value of r2) Å2
<r2> 70.561
(<r2>)1/2 8.400