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

using model chemistry: wB97X-D/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at wB97X-D/6-31+G**
 hartrees
Energy at 0K-229.003446
Energy at 298.15K-229.008341
HF Energy-229.003446
Nuclear repulsion energy122.389400
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 wB97X-D/6-31+G**
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' 3205 3052 11.71      
2 A' 3108 2960 43.23      
3 A' 3083 2936 29.77      
4 A' 1842 1754 357.93      
5 A' 1500 1428 13.09      
6 A' 1480 1410 5.97      
7 A' 1419 1351 1.30      
8 A' 1281 1220 300.91      
9 A' 1201 1143 35.79      
10 A' 970 924 27.78      
11 A' 785 747 8.75      
12 A' 309 294 15.87      
13 A" 3172 3021 16.89      
14 A" 1504 1432 11.01      
15 A" 1182 1126 1.28      
16 A" 1037 987 0.05      
17 A" 341 324 31.33      
18 A" 133 126 0.29      

Unscaled Zero Point Vibrational Energy (zpe) 13775.1 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 13118.1 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 wB97X-D/6-31+G**
ABC
0.67516 0.22921 0.17686

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.362 0.425 0.000
O2 0.000 0.862 0.000
C3 -0.929 -0.094 0.000
O4 -0.722 -1.279 0.000
H5 1.963 1.332 0.000
H6 1.572 -0.173 0.890
H7 1.572 -0.173 -0.890
H8 -1.926 0.369 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.43002.34822.69161.08891.09261.09263.2885
O21.43001.33232.25962.01902.08162.08161.9885
C32.34821.33231.20383.22442.65542.65541.0996
O42.69162.25961.20383.74592.69792.69792.0414
H51.08892.01903.22443.74591.79181.79184.0074
H61.09262.08162.65542.69791.79181.78093.6501
H71.09262.08162.65542.69791.79181.78093.6501
H83.28851.98851.09962.04144.00743.65013.6501

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 116.394 O2 C1 H5 105.753
O2 C1 H6 110.502 O2 C1 H7 110.502
O2 C3 O4 125.916 O2 C3 H8 109.333
O4 C3 H8 124.751 H5 C1 H6 110.442
H5 C1 H7 110.442 H6 C1 H7 109.169
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.249      
2 O -0.280      
3 C 0.321      
4 O -0.458      
5 H 0.170      
6 H 0.176      
7 H 0.176      
8 H 0.142      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.002 1.743 0.000 2.010
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.046 -1.283 0.000
y -1.283 -28.960 0.000
z 0.000 0.000 -23.099
Traceless
 xyz
x 6.984 -1.283 0.000
y -1.283 -7.888 0.000
z 0.000 0.000 0.904
Polar
3z2-r21.808
x2-y29.914
xy-1.283
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.115 0.361 0.000
y 0.361 5.103 0.000
z 0.000 0.000 3.407


<r2> (average value of r2) Å2
<r2> 71.296
(<r2>)1/2 8.444