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

using model chemistry: wB97X-D/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/cc-pVTZ
 hartrees
Energy at 0K-229.076646
Energy at 298.15K-229.081542
HF Energy-229.076646
Nuclear repulsion energy122.863451
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/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 3041 12.30      
2 A' 3071 2935 3.08      
3 A' 3066 2931 72.90      
4 A' 1842 1761 309.57      
5 A' 1495 1429 11.87      
6 A' 1475 1410 5.89      
7 A' 1421 1358 1.58      
8 A' 1267 1211 278.63      
9 A' 1198 1145 48.75      
10 A' 967 924 24.11      
11 A' 789 754 8.64      
12 A' 310 297 14.38      
13 A" 3149 3011 17.43      
14 A" 1498 1433 10.14      
15 A" 1181 1129 1.24      
16 A" 1041 996 0.06      
17 A" 334 319 25.75      
18 A" 129 124 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 13706.6 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 13103.5 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/cc-pVTZ
ABC
0.68085 0.23080 0.17814

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.356 0.418 0.000
O2 0.000 0.861 0.000
C3 -0.924 -0.093 0.000
O4 -0.721 -1.271 0.000
H5 1.963 1.318 0.000
H6 1.564 -0.179 0.886
H7 1.564 -0.179 -0.886
H8 -1.919 0.370 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.42672.33662.67671.08541.08891.08893.2755
O21.42671.32782.25022.01522.07722.07721.9807
C32.33661.32781.19553.21292.64292.64291.0973
O42.67672.25021.19553.72862.68302.68302.0318
H51.08542.01523.21293.72861.78501.78503.9957
H61.08892.07722.64292.68301.78501.77303.6360
H71.08892.07722.64292.68301.78501.77303.6360
H83.27551.98071.09732.03183.99573.63603.6360

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 116.007 O2 C1 H5 105.884
O2 C1 H6 110.607 O2 C1 H7 110.607
O2 C3 O4 126.112 O2 C3 H8 109.154
O4 C3 H8 124.733 H5 C1 H6 110.361
H5 C1 H7 110.361 H6 C1 H7 109.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.049      
2 O -0.209      
3 C 0.249      
4 O -0.316      
5 H 0.092      
6 H 0.083      
7 H 0.083      
8 H 0.067      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.927 1.688 0.000 1.926
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.158 -1.217 0.000
y -1.217 -28.057 0.000
z 0.000 0.000 -22.831
Traceless
 xyz
x 6.286 -1.217 0.000
y -1.217 -7.062 0.000
z 0.000 0.000 0.776
Polar
3z2-r21.552
x2-y28.899
xy-1.217
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.264 0.309 0.000
y 0.309 4.829 0.000
z 0.000 0.000 3.435


<r2> (average value of r2) Å2
<r2> 70.681
(<r2>)1/2 8.407