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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-229.160575
Energy at 298.15K-229.165444
HF Energy-229.160575
Nuclear repulsion energy122.190218
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 B3LYPultrafine/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' 3158 3056 11.04      
2 A' 3055 2956 16.03      
3 A' 3037 2939 55.63      
4 A' 1787 1729 321.45      
5 A' 1497 1449 10.43      
6 A' 1468 1420 4.36      
7 A' 1396 1351 1.52      
8 A' 1228 1188 181.00      
9 A' 1178 1140 140.04      
10 A' 925 895 24.60      
11 A' 774 749 7.47      
12 A' 298 288 13.92      
13 A" 3125 3023 15.83      
14 A" 1487 1439 9.73      
15 A" 1173 1135 1.35      
16 A" 1040 1007 0.00      
17 A" 344 333 26.05      
18 A" 128 124 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 13548.5 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 13108.2 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 B3LYPultrafine/aug-cc-pVTZ
ABC
0.67624 0.22717 0.17567

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.370 0.430 0.000
O2 0.000 0.859 0.000
C3 -0.930 -0.097 0.000
O4 -0.732 -1.280 0.000
H5 1.968 1.336 0.000
H6 1.585 -0.165 0.886
H7 1.585 -0.165 -0.886
H8 -1.925 0.367 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.43592.35982.70931.08541.08871.08873.2958
O21.43591.33412.26082.02482.08502.08501.9870
C32.35981.33411.19933.23302.66762.66761.0978
O42.70932.26081.19933.75892.71942.71942.0338
H51.08542.02483.23303.75891.78441.78444.0117
H61.08872.08502.66762.71941.78441.77213.6591
H71.08872.08502.66762.71941.78441.77213.6591
H83.29581.98701.09782.03384.01173.65913.6591

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 116.795 O2 C1 H5 106.016
O2 C1 H6 110.603 O2 C1 H7 110.603
O2 C3 O4 126.272 O2 C3 H8 109.193
O4 C3 H8 124.535 H5 C1 H6 110.325
H5 C1 H7 110.325 H6 C1 H7 108.951
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.467      
2 O -0.266      
3 C -0.018      
4 O -0.523      
5 H 0.276      
6 H 0.254      
7 H 0.254      
8 H 0.491      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.989 1.698 0.000 1.965
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.628 -1.209 0.000
y -1.209 -28.767 0.000
z 0.000 0.000 -23.242
Traceless
 xyz
x 6.376 -1.209 0.000
y -1.209 -7.332 0.000
z 0.000 0.000 0.956
Polar
3z2-r21.912
x2-y29.138
xy-1.209
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.951 0.359 0.000
y 0.359 5.459 0.000
z 0.000 0.000 3.963


<r2> (average value of r2) Å2
<r2> 71.752
(<r2>)1/2 8.471