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

using model chemistry: wB97X-D/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 wB97X-D/6-311G**
 hartrees
Energy at 0K-229.052291
Energy at 298.15K-229.057197
HF Energy-229.052291
Nuclear repulsion energy122.746304
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/6-311G**
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' 3184 3045 14.55      
2 A' 3069 2935 14.72      
3 A' 3065 2931 68.83      
4 A' 1853 1772 310.36      
5 A' 1497 1432 12.54      
6 A' 1477 1413 6.27      
7 A' 1418 1356 1.47      
8 A' 1267 1211 281.11      
9 A' 1199 1147 51.99      
10 A' 968 926 25.89      
11 A' 793 759 9.04      
12 A' 314 300 15.01      
13 A" 3147 3010 21.98      
14 A" 1496 1431 11.05      
15 A" 1182 1131 1.04      
16 A" 1046 1001 0.20      
17 A" 342 327 28.73      
18 A" 128 123 0.25      

Unscaled Zero Point Vibrational Energy (zpe) 13721.6 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 13124.7 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 wB97X-D/6-311G**
ABC
0.67775 0.23086 0.17799

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.357 0.415 0.000
O2 0.000 0.862 0.000
C3 -0.926 -0.092 0.000
O4 -0.720 -1.270 0.000
H5 1.965 1.316 0.000
H6 1.564 -0.184 0.889
H7 1.564 -0.184 -0.889
H8 -1.921 0.374 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.42842.33772.67371.08751.09151.09153.2781
O21.42841.32922.25032.01682.08092.08091.9823
C32.33771.32921.19613.21532.64512.64511.0994
O42.67372.25031.19613.72762.68022.68022.0366
H51.08752.01683.21533.72761.78921.78923.9988
H61.09152.08092.64512.68021.78921.77743.6399
H71.09152.08092.64512.68021.78921.77743.6399
H83.27811.98231.09942.03663.99883.63993.6399

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 115.889 O2 C1 H5 105.776
O2 C1 H6 110.628 O2 C1 H7 110.628
O2 C3 O4 125.940 O2 C3 H8 109.052
O4 C3 H8 125.008 H5 C1 H6 110.388
H5 C1 H7 110.388 H6 C1 H7 109.008
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.153      
2 O -0.293      
3 C 0.274      
4 O -0.339      
5 H 0.133      
6 H 0.135      
7 H 0.135      
8 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.935 1.600 0.000 1.854
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.949 -1.196 0.000
y -1.196 -28.153 0.000
z 0.000 0.000 -22.753
Traceless
 xyz
x 6.503 -1.196 0.000
y -1.196 -7.302 0.000
z 0.000 0.000 0.798
Polar
3z2-r21.596
x2-y29.203
xy-1.196
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.808 0.287 0.000
y 0.287 4.457 0.000
z 0.000 0.000 3.033


<r2> (average value of r2) Å2
<r2> 70.699
(<r2>)1/2 8.408