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

using model chemistry: wB97X-D/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-229.080572
Energy at 298.15K-229.085469
HF Energy-229.080572
Nuclear repulsion energy122.824704
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/aug-cc-pVTZ
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' 3181 3043 11.29      
2 A' 3071 2938 2.72      
3 A' 3067 2934 68.43      
4 A' 1829 1750 338.30      
5 A' 1494 1429 12.67      
6 A' 1473 1409 5.81      
7 A' 1418 1357 1.58      
8 A' 1266 1211 279.46      
9 A' 1197 1145 50.73      
10 A' 965 923 25.43      
11 A' 786 752 8.10      
12 A' 310 296 14.37      
13 A" 3149 3013 15.96      
14 A" 1499 1434 10.88      
15 A" 1179 1128 1.26      
16 A" 1040 995 0.00      
17 A" 334 320 25.96      
18 A" 131 125 0.45      

Unscaled Zero Point Vibrational Energy (zpe) 13694.3 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 13099.9 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 wB97X-D/aug-cc-pVTZ
ABC
0.68130 0.23042 0.17795

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.358 0.420 0.000
O2 0.000 0.860 0.000
C3 -0.925 -0.093 0.000
O4 -0.721 -1.272 0.000
H5 1.962 1.321 0.000
H6 1.566 -0.177 0.887
H7 1.566 -0.177 -0.887
H8 -1.920 0.368 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.42712.33932.68011.08531.08881.08883.2781
O21.42711.32782.25012.01572.07672.07671.9820
C32.33931.32781.19603.21472.64512.64511.0971
O42.68012.25011.19603.73142.68642.68642.0314
H51.08532.01573.21473.73141.78521.78523.9975
H61.08882.07672.64512.68641.78521.77363.6381
H71.08882.07672.64512.68641.78521.77363.6381
H83.27811.98201.09712.03143.99753.63813.6381

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 116.185 O2 C1 H5 105.895
O2 C1 H6 110.538 O2 C1 H7 110.538
O2 C3 O4 126.063 O2 C3 H8 109.269
O4 C3 H8 124.668 H5 C1 H6 110.387
H5 C1 H7 110.387 H6 C1 H7 109.072
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.567      
2 O -0.278      
3 C 0.090      
4 O -0.588      
5 H 0.276      
6 H 0.297      
7 H 0.297      
8 H 0.474      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.939 1.726 0.000 1.965
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.323 -1.224 0.000
y -1.224 -28.405 0.000
z 0.000 0.000 -22.981
Traceless
 xyz
x 6.370 -1.224 0.000
y -1.224 -7.253 0.000
z 0.000 0.000 0.883
Polar
3z2-r21.767
x2-y29.082
xy-1.224
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.760 0.343 0.000
y 0.343 5.366 0.000
z 0.000 0.000 3.927


<r2> (average value of r2) Å2
<r2> 70.877
(<r2>)1/2 8.419