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

using model chemistry: BLYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-227.735904
Energy at 298.15K-227.740603
Nuclear repulsion energy118.345906
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 BLYP/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' 3085 3068 4.82      
2 A' 2997 2980 18.87      
3 A' 2972 2956 74.03      
4 A' 1661 1652 154.64      
5 A' 1517 1508 8.63      
6 A' 1403 1395 24.78      
7 A' 1358 1350 1.17      
8 A' 1147 1141 2.36      
9 A' 1052 1047 238.31      
10 A' 832 828 5.10      
11 A' 714 710 9.75      
12 A' 320 318 16.22      
13 A" 3077 3060 23.08      
14 A" 1528 1519 5.69      
15 A" 1112 1105 0.50      
16 A" 982 976 1.40      
17 A" 321 319 24.27      
18 A" 91 90 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 13082.9 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 13010.9 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 BLYP/3-21G
ABC
0.63117 0.21181 0.16365

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.426 0.422 0.000
O2 0.000 0.908 0.000
C3 0.966 -0.102 0.000
O4 0.757 -1.319 0.000
H5 -1.427 -0.677 0.000
H6 -1.907 0.821 0.903
H7 -1.907 0.821 -0.903
H8 1.948 0.401 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.50672.44872.79171.09861.09841.09843.3739
O21.50671.39772.35212.13252.11182.11182.0129
C32.44871.39771.23472.46073.15003.15001.1031
O42.79172.35211.23472.27573.53433.53432.0919
H51.09862.13252.46072.27571.81411.81413.5424
H61.09842.11183.15003.53431.81411.80593.9815
H71.09842.11183.15003.53431.81411.80593.9815
H83.37392.01291.10312.09193.54243.98153.9815

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 114.881 O2 C1 H5 108.871
O2 C1 H6 107.274 O2 C1 H7 107.274
O2 C3 O4 126.519 O2 C3 H8 106.607
O4 C3 H8 126.874 H5 C1 H6 111.328
H5 C1 H7 111.328 H6 C1 H7 110.581
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.355      
2 O -0.419      
3 C 0.376      
4 O -0.414      
5 H 0.214      
6 H 0.205      
7 H 0.205      
8 H 0.186      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.056 1.179 0.000 1.583
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.926 1.038 0.000
y 1.038 -28.067 0.000
z 0.000 0.000 -22.767
Traceless
 xyz
x 6.491 1.038 0.000
y 1.038 -7.221 0.000
z 0.000 0.000 0.730
Polar
3z2-r21.460
x2-y29.141
xy1.038
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 74.233
(<r2>)1/2 8.616