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

using model chemistry: BLYP/6-31G

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/6-31G
 hartrees
Energy at 0K-228.930698
Energy at 298.15K-228.935314
Nuclear repulsion energy118.374547
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/6-31G
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' 3134 3111 12.15      
2 A' 3030 3007 48.23      
3 A' 3005 2982 22.43      
4 A' 1639 1626 195.39      
5 A' 1492 1480 7.84      
6 A' 1433 1422 6.47      
7 A' 1354 1344 5.76      
8 A' 1155 1147 23.80      
9 A' 1079 1071 224.16      
10 A' 818 812 10.94      
11 A' 715 710 8.53      
12 A' 270 268 14.17      
13 A" 3089 3065 22.55      
14 A" 1482 1471 9.83      
15 A" 1119 1111 0.48      
16 A" 967 960 0.46      
17 A" 335 332 31.11      
18 A" 75 74 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 13095.4 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 12995.9 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/6-31G
ABC
0.63385 0.21229 0.16407

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.423 0.428 0.000
O2 0.000 0.898 0.000
C3 -0.969 -0.097 0.000
O4 -0.752 -1.320 0.000
H5 2.014 1.350 0.000
H6 1.619 -0.174 0.899
H7 1.619 -0.174 -0.899
H8 -1.960 0.385 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.49862.44842.79011.09501.09941.09943.3829
O21.49861.38872.34192.06392.14002.14002.0259
C32.44841.38871.24173.31482.74042.74041.1019
O42.79012.34191.24173.84402.78252.78252.0886
H51.09502.06393.31483.84401.81281.81284.0891
H61.09942.14002.74042.78251.81281.79733.7320
H71.09942.14002.74042.78251.81281.79733.7320
H83.38292.02591.10192.08864.08913.73203.7320

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 115.934 O2 C1 H5 104.376
O2 C1 H6 109.960 O2 C1 H7 109.960
O2 C3 O4 125.739 O2 C3 H8 108.315
O4 C3 H8 125.945 H5 C1 H6 111.396
H5 C1 H7 111.396 H6 C1 H7 109.645
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.172      
2 O -0.409      
3 C 0.322      
4 O -0.364      
5 H 0.158      
6 H 0.163      
7 H 0.163      
8 H 0.139      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.208 1.422 0.000 1.866
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.776 -1.079 0.000
y -1.079 -28.976 0.000
z 0.000 0.000 -23.007
Traceless
 xyz
x 7.216 -1.079 0.000
y -1.079 -8.084 0.000
z 0.000 0.000 0.869
Polar
3z2-r21.737
x2-y210.200
xy-1.079
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> 75.358
(<r2>)1/2 8.681