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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-229.063010
Energy at 298.15K-229.067873
Nuclear repulsion energy121.956948
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 B3LYPultrafine/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' 3188 3055 15.42      
2 A' 3079 2950 9.04      
3 A' 3069 2940 77.89      
4 A' 1832 1755 266.83      
5 A' 1524 1460 9.19      
6 A' 1488 1426 3.22      
7 A' 1417 1357 1.86      
8 A' 1246 1194 221.85      
9 A' 1197 1147 85.87      
10 A' 946 906 21.81      
11 A' 780 747 8.36      
12 A' 301 288 14.48      
13 A" 3154 3022 20.85      
14 A" 1514 1451 6.81      
15 A" 1185 1135 1.09      
16 A" 1037 994 0.53      
17 A" 349 334 25.70      
18 A" 127 122 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 13717.3 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 13141.2 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 B3LYPultrafine/6-31G*
ABC
0.66828 0.22789 0.17559

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.365 0.412 0.000
O2 0.000 0.875 0.000
C3 -0.932 -0.091 0.000
O4 -0.721 -1.279 0.000
H5 1.978 1.312 0.000
H6 1.563 -0.190 0.890
H7 1.563 -0.190 -0.890
H8 -1.929 0.375 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.44102.35102.68511.08981.09301.09303.2941
O21.44101.34212.27122.02622.09062.09061.9930
C32.35101.34211.20653.23102.65112.65111.1007
O42.68512.27121.20653.74212.68252.68252.0480
H51.08982.02623.23103.74211.79541.79544.0185
H61.09302.09062.65112.68251.79541.78063.6481
H71.09302.09062.65112.68251.79541.78063.6481
H83.29411.99301.10072.04804.01853.64813.6481

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 115.245 O2 C1 H5 105.533
O2 C1 H6 110.425 O2 C1 H7 110.425
O2 C3 O4 125.959 O2 C3 H8 108.945
O4 C3 H8 125.096 H5 C1 H6 110.673
H5 C1 H7 110.673 H6 C1 H7 109.082
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.226      
2 O -0.402      
3 C 0.387      
4 O -0.418      
5 H 0.170      
6 H 0.175      
7 H 0.175      
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
  0.987 1.553 0.000 1.840
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.105 -1.112 0.000
y -1.112 -27.802 0.000
z 0.000 0.000 -22.669
Traceless
 xyz
x 6.131 -1.112 0.000
y -1.112 -6.915 0.000
z 0.000 0.000 0.785
Polar
3z2-r21.569
x2-y28.697
xy-1.112
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.746 0.344 0.000
y 0.344 4.311 0.000
z 0.000 0.000 2.782


<r2> (average value of r2) Å2
<r2> 71.349
(<r2>)1/2 8.447