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

using model chemistry: B3LYPultrafine/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-229.080706
Energy at 298.15K-229.085560
Nuclear repulsion energy121.722265
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/6-31+G**
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' 3183 3064 11.41      
2 A' 3075 2960 31.27      
3 A' 3068 2953 42.14      
4 A' 1797 1730 341.49      
5 A' 1500 1444 10.93      
6 A' 1470 1415 4.10      
7 A' 1398 1346 1.32      
8 A' 1237 1191 231.73      
9 A' 1184 1140 93.58      
10 A' 930 895 26.61      
11 A' 771 743 7.74      
12 A' 295 284 14.96      
13 A" 3149 3031 16.63      
14 A" 1490 1435 9.80      
15 A" 1174 1130 1.23      
16 A" 1033 995 0.00      
17 A" 346 334 30.05      
18 A" 128 123 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 13613.5 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 13105.7 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/6-31+G**
ABC
0.67010 0.22578 0.17447

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.372 0.418 0.000
O2 0.000 0.870 0.000
C3 -0.936 -0.092 0.000
O4 -0.726 -1.282 0.000
H5 1.975 1.325 0.000
H6 1.573 -0.181 0.891
H7 1.573 -0.181 -0.891
H8 -1.933 0.371 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 O4 H5 H6 H7 H8
C11.44482.36392.70091.08901.09231.09233.3056
O21.44481.34212.27182.02682.09092.09091.9963
C32.36391.34211.20923.23762.66362.66361.0992
O42.70092.27181.20923.75442.70012.70012.0474
H51.08902.02683.23763.75441.79571.79574.0228
H61.09232.09092.66362.70011.79571.78253.6588
H71.09232.09092.66362.70011.79571.78253.6588
H83.30561.99631.09922.04744.02283.65883.6588

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 115.984 O2 C1 H5 105.376
O2 C1 H6 110.220 O2 C1 H7 110.220
O2 C3 O4 125.780 O2 C3 H8 109.306
O4 C3 H8 124.914 H5 C1 H6 110.809
H5 C1 H7 110.809 H6 C1 H7 109.356
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.217      
2 O -0.283      
3 C 0.335      
4 O -0.452      
5 H 0.157      
6 H 0.167      
7 H 0.167      
8 H 0.126      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.055 1.705 0.000 2.005
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.361 -1.247 -0.002
y -1.247 -29.196 -0.002
z -0.002 -0.002 -23.315
Traceless
 xyz
x 6.894 -1.247 -0.002
y -1.247 -7.858 -0.002
z -0.002 -0.002 0.964
Polar
3z2-r21.928
x2-y29.835
xy-1.247
xz-0.002
yz-0.002


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.333 0.382 0.001
y 0.382 5.212 0.001
z 0.001 0.001 3.458


<r2> (average value of r2) Å2
<r2> 72.181
(<r2>)1/2 8.496