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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-228.836861
Energy at 298.15K-228.841753
HF Energy-228.633292
Nuclear repulsion energy121.989049
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 B2PLYP/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' 3229 3065 14.02      
2 A' 3119 2961 39.50      
3 A' 3112 2954 41.43      
4 A' 1818 1725 250.27      
5 A' 1545 1466 8.69      
6 A' 1505 1428 3.44      
7 A' 1425 1353 1.74      
8 A' 1257 1194 221.06      
9 A' 1209 1147 93.33      
10 A' 954 906 22.44      
11 A' 780 740 8.48      
12 A' 306 290 14.78      
13 A" 3196 3034 19.26      
14 A" 1536 1458 6.57      
15 A" 1199 1138 1.33      
16 A" 1043 990 0.38      
17 A" 351 333 27.15      
18 A" 135 129 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 13859.6 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 13155.6 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 B2PLYP/6-31G*
ABC
0.66317 0.22942 0.17612

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.361 0.419 0.000
O2 0.000 0.872 0.000
C3 -0.928 -0.093 0.000
O4 -0.723 -1.283 0.000
H5 1.972 1.320 0.000
H6 1.567 -0.181 0.888
H7 1.567 -0.181 -0.888
H8 -1.924 0.373 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.43492.34542.69131.08811.09161.09163.2854
O21.43491.33852.27382.02212.08662.08661.9874
C32.34541.33851.20833.22522.64952.64951.0997
O42.69132.27381.20833.74682.69232.69232.0460
H51.08812.02213.22523.74681.79021.79024.0090
H61.09162.08662.64952.69231.79021.77693.6443
H71.09162.08662.64952.69231.79021.77693.6443
H83.28541.98741.09972.04604.00903.64433.6443

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 115.454 O2 C1 H5 105.720
O2 C1 H6 110.627 O2 C1 H7 110.627
O2 C3 O4 126.381 O2 C3 H8 108.808
O4 C3 H8 124.811 H5 C1 H6 110.440
H5 C1 H7 110.440 H6 C1 H7 108.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.231      
2 O -0.425      
3 C 0.385      
4 O -0.418      
5 H 0.177      
6 H 0.180      
7 H 0.180      
8 H 0.152      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.965 1.516 0.000 1.797
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.116 -1.125 0.000
y -1.125 -27.993 0.000
z 0.000 0.000 -22.809
Traceless
 xyz
x 6.285 -1.125 0.000
y -1.125 -7.031 0.000
z 0.000 0.000 0.746
Polar
3z2-r21.492
x2-y28.877
xy-1.125
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.667 0.350 0.000
y 0.350 4.324 0.000
z 0.000 0.000 2.759


<r2> (average value of r2) Å2
<r2> 71.217
(<r2>)1/2 8.439