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

using model chemistry: BLYP/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 BLYP/6-31G*
 hartrees
Energy at 0K-229.001680
Energy at 298.15K-229.006427
HF Energy-229.001680
Nuclear repulsion energy120.559044
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 BLYP/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' 3105 3080 16.52      
2 A' 2998 2973 18.54      
3 A' 2967 2943 75.84      
4 A' 1749 1735 228.73      
5 A' 1484 1472 7.98      
6 A' 1440 1428 3.19      
7 A' 1370 1359 1.33      
8 A' 1182 1172 77.14      
9 A' 1133 1124 188.63      
10 A' 888 881 17.96      
11 A' 747 741 6.96      
12 A' 288 286 12.77      
13 A" 3068 3043 22.98      
14 A" 1473 1461 6.01      
15 A" 1143 1134 0.78      
16 A" 982 974 0.06      
17 A" 344 341 21.85      
18 A" 107 106 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 13233.4 cm-1
Scaled (by 0.9919) Zero Point Vibrational Energy (zpe) 13126.2 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 BLYP/6-31G*
ABC
0.65244 0.22255 0.17141

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.383 0.441 0.000
O2 0.000 0.872 0.000
C3 -0.936 -0.102 0.000
O4 -0.742 -1.303 0.000
H5 1.985 1.358 0.000
H6 1.606 -0.161 0.894
H7 1.606 -0.161 -0.894
H8 -1.938 0.377 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.44832.38092.74871.09731.10081.10083.3212
O21.44831.35092.29832.04322.10852.10852.0005
C32.38091.35091.21623.26502.69482.69481.1109
O42.74872.29831.21623.81022.76002.76002.0616
H51.09732.04323.26503.81021.80311.80314.0436
H61.10082.10852.69482.76001.80311.78893.6942
H71.10082.10852.69482.76001.80311.78893.6942
H83.32122.00051.11092.06164.04363.69423.6942

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 116.506 O2 C1 H5 105.940
O2 C1 H6 110.877 O2 C1 H7 110.877
O2 C3 O4 127.016 O2 C3 H8 108.313
O4 C3 H8 124.671 H5 C1 H6 110.224
H5 C1 H7 110.224 H6 C1 H7 108.687
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.206      
2 O -0.360      
3 C 0.353      
4 O -0.388      
5 H 0.155      
6 H 0.163      
7 H 0.163      
8 H 0.119      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.035 1.479 0.000 1.805
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.363 -1.029 0.000
y -1.029 -27.645 0.000
z 0.000 0.000 -22.771
Traceless
 xyz
x 5.844 -1.029 0.000
y -1.029 -6.578 0.000
z 0.000 0.000 0.733
Polar
3z2-r21.467
x2-y28.281
xy-1.029
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.069 0.393 0.000
y 0.393 4.466 0.000
z 0.000 0.000 2.838


<r2> (average value of r2) Å2
<r2> 72.713
(<r2>)1/2 8.527