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

using model chemistry: B3LYP/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/TZVP
 hartrees
Energy at 0K-229.153465
Energy at 298.15K-229.158331
HF Energy-229.153465
Nuclear repulsion energy122.051533
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 B3LYP/TZVP
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' 3166 3057 11.95      
2 A' 3057 2951 12.77      
3 A' 3044 2939 62.08      
4 A' 1795 1733 315.51      
5 A' 1499 1447 10.37      
6 A' 1474 1423 4.03      
7 A' 1407 1359 1.83      
8 A' 1228 1185 178.93      
9 A' 1180 1140 146.19      
10 A' 924 892 25.20      
11 A' 779 752 8.04      
12 A' 297 287 14.44      
13 A" 3129 3021 18.67      
14 A" 1488 1437 9.81      
15 A" 1174 1134 1.12      
16 A" 1039 1003 0.03      
17 A" 347 335 29.29      
18 A" 125 121 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 13576.8 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 13107.1 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 B3LYP/TZVP
ABC
0.67649 0.22620 0.17512

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.371 0.419 0.000
O2 0.000 0.866 0.000
C3 -0.934 -0.094 0.000
O4 -0.728 -1.277 0.000
H5 1.972 1.324 0.000
H6 1.577 -0.178 0.888
H7 1.577 -0.178 -0.888
H8 -1.928 0.371 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.44242.36172.69891.08611.08971.08973.2998
O21.44241.33952.26362.02472.08942.08941.9907
C32.36171.33951.20093.23362.66442.66441.0976
O42.69892.26361.20093.74912.70332.70332.0388
H51.08612.02473.23363.74911.78911.78914.0152
H61.08972.08942.66442.70331.78911.77623.6570
H71.08972.08942.66442.70331.78911.77623.6570
H83.29981.99071.09762.03884.01523.65703.6570

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 116.138 O2 C1 H5 105.535
O2 C1 H6 110.429 O2 C1 H7 110.429
O2 C3 O4 125.923 O2 C3 H8 109.134
O4 C3 H8 124.943 H5 C1 H6 110.621
H5 C1 H7 110.621 H6 C1 H7 109.170
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.186      
2 O -0.221      
3 C 0.233      
4 O -0.327      
5 H 0.137      
6 H 0.136      
7 H 0.136      
8 H 0.093      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.042 1.649 0.000 1.951
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.388 -1.207 0.000
y -1.207 -28.990 0.000
z 0.000 0.000 -23.172
Traceless
 xyz
x 6.693 -1.207 0.000
y -1.207 -7.710 0.000
z 0.000 0.000 1.017
Polar
3z2-r22.034
x2-y29.602
xy-1.207
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.228 0.348 0.000
y 0.348 4.983 0.000
z 0.000 0.000 3.411


<r2> (average value of r2) Å2
<r2> 71.921
(<r2>)1/2 8.481