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

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-227.844970
Energy at 298.15K-227.850036
Nuclear repulsion energy123.990048
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 HF/6-311G*
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' 3332 3014 31.40      
2 A' 3271 2958 68.41      
3 A' 3229 2920 38.50      
4 A' 1995 1804 421.15      
5 A' 1641 1484 11.00      
6 A' 1619 1465 2.89      
7 A' 1546 1398 5.25      
8 A' 1382 1250 371.14      
9 A' 1320 1194 108.89      
10 A' 1033 934 35.47      
11 A' 854 772 11.02      
12 A' 326 295 17.39      
13 A" 3305 2989 39.33      
14 A" 1633 1477 6.88      
15 A" 1300 1176 3.63      
16 A" 1181 1068 4.36      
17 A" 346 313 38.37      
18 A" 165 149 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 14738.2 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 13329.3 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 HF/6-311G*
ABC
0.70679 0.23162 0.18029

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.354 0.422 0.000
O2 0.000 0.843 0.000
C3 -0.920 -0.096 0.000
O4 -0.721 -1.256 0.000
H5 1.942 1.324 0.000
H6 1.566 -0.166 0.881
H7 1.566 -0.166 -0.881
H8 -1.908 0.354 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.41762.33142.66891.07751.08021.08023.2622
O21.41761.31422.22022.00112.06082.06081.9698
C32.33141.31421.17773.19492.63822.63821.0856
O42.66892.22021.17773.70902.68312.68312.0000
H51.07752.00113.19493.70901.77151.77153.9708
H61.08022.06082.63822.68311.77151.76223.6215
H71.08022.06082.63822.68311.77151.76223.6215
H83.26221.96981.08562.00003.97083.62153.6215

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 117.121 O2 C1 H5 105.839
O2 C1 H6 110.460 O2 C1 H7 110.460
O2 C3 O4 125.902 O2 C3 H8 109.966
O4 C3 H8 124.132 H5 C1 H6 110.371
H5 C1 H7 110.371 H6 C1 H7 109.304
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.385 0.131   0.035
2 O -0.397 -0.477   -0.452
3 C 0.343 0.831   0.807
4 O -0.437 -0.605   -0.597
5 H 0.222 0.052   0.076
6 H 0.224 0.054   0.080
7 H 0.224 0.054   0.080
8 H 0.206 -0.039   -0.030


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.885 1.793 0.000 2.000
CHELPG        
AIM        
ESP 0.927 1.777 0.000 2.004


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.756 -1.365 0.000
y -1.365 -28.808 0.000
z 0.000 0.000 -22.736
Traceless
 xyz
x 7.017 -1.365 0.000
y -1.365 -8.062 0.000
z 0.000 0.000 1.046
Polar
3z2-r22.091
x2-y210.053
xy-1.365
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.176 0.206 0.000
y 0.206 4.092 0.000
z 0.000 0.000 2.789


<r2> (average value of r2) Å2
<r2> 70.114
(<r2>)1/2 8.373