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

using model chemistry: BLYP/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 BLYP/6-311G*
 hartrees
Energy at 0K-229.068549
Energy at 298.15K-229.073288
Nuclear repulsion energy120.735116
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/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' 3090 3083 19.40      
2 A' 2982 2975 21.45      
3 A' 2940 2933 83.36      
4 A' 1733 1729 255.58      
5 A' 1475 1472 9.06      
6 A' 1433 1429 4.23      
7 A' 1358 1355 1.20      
8 A' 1179 1176 48.82      
9 A' 1111 1109 227.19      
10 A' 872 870 20.11      
11 A' 748 747 6.87      
12 A' 287 287 12.60      
13 A" 3050 3043 28.11      
14 A" 1462 1458 9.24      
15 A" 1140 1138 0.74      
16 A" 979 976 0.02      
17 A" 343 342 24.03      
18 A" 101 101 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 13141.6 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 13108.7 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 BLYP/6-311G*
ABC
0.65831 0.22198 0.17146

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.385 0.418 0.000
O2 0.000 0.884 0.000
C3 -0.942 -0.098 0.000
O4 -0.735 -1.291 0.000
H5 1.992 1.327 0.000
H6 1.585 -0.185 0.895
H7 1.585 -0.185 -0.895
H8 -1.940 0.383 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.46132.38342.72311.09361.09721.09723.3251
O21.46131.36032.29572.04072.11052.11052.0035
C32.38341.36031.21143.26172.68192.68191.1075
O42.72312.29571.21143.78072.72122.72122.0625
H51.09362.04073.26173.78071.80391.80394.0437
H61.09722.11052.68192.72121.80391.78943.6805
H71.09722.11052.68192.72121.80391.78943.6805
H83.32512.00351.10752.06254.04373.68053.6805

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 115.235 O2 C1 H5 105.114
O2 C1 H6 110.348 O2 C1 H7 110.348
O2 C3 O4 126.334 O2 C3 H8 108.121
O4 C3 H8 125.544 H5 C1 H6 110.860
H5 C1 H7 110.860 H6 C1 H7 109.261
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.428      
2 O -0.248      
3 C 0.151      
4 O -0.294      
5 H 0.213      
6 H 0.216      
7 H 0.216      
8 H 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.029 1.486 0.000 1.808
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.567 -1.058 0.000
y -1.058 -28.245 0.000
z 0.000 0.000 -23.188
Traceless
 xyz
x 6.149 -1.058 0.000
y -1.058 -6.867 0.000
z 0.000 0.000 0.718
Polar
3z2-r21.436
x2-y28.677
xy-1.058
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> 72.958
(<r2>)1/2 8.542