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

using model chemistry: B3LYP/6-311G*

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/6-311G*
 hartrees
Energy at 0K-229.125454
Energy at 298.15K-229.130309
Nuclear repulsion energy122.161371
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/6-311G*
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' 3170 3063 18.58      
2 A' 3060 2957 16.22      
3 A' 3041 2939 80.31      
4 A' 1814 1753 295.25      
5 A' 1516 1465 10.71      
6 A' 1482 1432 4.70      
7 A' 1407 1360 1.47      
8 A' 1236 1194 165.23      
9 A' 1186 1146 154.60      
10 A' 935 903 24.28      
11 A' 783 756 7.98      
12 A' 300 289 14.13      
13 A" 3132 3026 26.47      
14 A" 1504 1453 9.91      
15 A" 1184 1144 0.98      
16 A" 1034 999 0.12      
17 A" 348 336 27.39      
18 A" 119 115 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 13624.1 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 13165.0 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/6-311G*
ABC
0.67494 0.22740 0.17573

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.367 0.415 0.000
O2 0.000 0.869 0.000
C3 -0.931 -0.094 0.000
O4 -0.725 -1.276 0.000
H5 1.973 1.318 0.000
H6 1.569 -0.184 0.888
H7 1.569 -0.184 -0.888
H8 -1.927 0.373 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.44022.35412.68981.08701.09061.09063.2937
O21.44021.34022.26442.02332.08842.08841.9895
C32.35411.34021.19963.22952.65542.65541.0996
O42.68982.26441.19963.74232.69152.69152.0408
H51.08702.02333.22953.74231.79081.79084.0123
H61.09062.08842.65542.69151.79081.77663.6499
H71.09062.08842.65542.69151.79081.77663.6499
H83.29371.98951.09962.04084.01233.64993.6499

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 115.654 O2 C1 H5 105.519
O2 C1 H6 110.455 O2 C1 H7 110.455
O2 C3 O4 126.048 O2 C3 H8 108.857
O4 C3 H8 125.095 H5 C1 H6 110.647
H5 C1 H7 110.647 H6 C1 H7 109.087
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.444     -0.027
2 O -0.275     -0.369
3 C 0.185     0.648
4 O -0.327     -0.502
5 H 0.222     0.088
6 H 0.225     0.090
7 H 0.225     0.090
8 H 0.189     -0.018


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.983 1.567 0.000 1.850
CHELPG        
AIM        
ESP 1.030 1.555 0.000 1.865


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.273 -1.135 0.000
y -1.135 -28.277 0.000
z 0.000 0.000 -22.982
Traceless
 xyz
x 6.357 -1.135 0.000
y -1.135 -7.150 0.000
z 0.000 0.000 0.793
Polar
3z2-r21.586
x2-y29.005
xy-1.135
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.887 0.301 0.000
y 0.301 4.473 0.000
z 0.000 0.000 2.993


<r2> (average value of r2) Å2
<r2> 71.512
(<r2>)1/2 8.456