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All results from a given calculation for CH3NO3 (Methyl nitrate)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-317.273331
Energy at 298.15K-317.278871
HF Energy-316.637077
Nuclear repulsion energy179.927373
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 MP2/3-21G
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' 3211 3065 5.13      
2 A' 3112 2970 9.62      
3 A' 1713 1635 12.82      
4 A' 1604 1531 10.76      
5 A' 1514 1445 0.90      
6 A' 1174 1121 1.28      
7 A' 1096 1046 227.76      
8 A' 986 942 89.22      
9 A' 806 769 126.54      
10 A' 626 598 8.02      
11 A' 525 501 0.00      
12 A' 335 320 3.67      
13 A" 3196 3050 20.74      
14 A" 1582 1510 7.39      
15 A" 1181 1127 0.26      
16 A" 654 624 11.74      
17 A" 227 216 1.13      
18 A" 131 125 3.92      

Unscaled Zero Point Vibrational Energy (zpe) 11836.4 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 11297.9 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 MP2/3-21G
ABC
0.35411 0.14621 0.10556

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.638 0.000
O2 -1.274 0.529 0.000
O3 0.745 1.676 0.000
O4 0.785 -0.643 0.000
C5 -0.163 -1.790 0.000
H6 0.510 -2.648 0.000
H7 -0.790 -1.785 0.892
H8 -0.790 -1.785 -0.892

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 H6 H7 H8
N11.27901.27721.50322.43363.32572.70092.7009
O21.27902.32222.36982.57113.64342.52672.5267
O31.27722.32222.31953.58254.33033.89003.8900
O41.50322.36982.31951.48782.02372.14092.1409
C52.43362.57113.58251.48781.09031.09081.0908
H63.32573.64344.33032.02371.09031.79731.7973
H72.70092.52673.89002.14091.09081.79731.7842
H82.70092.52673.89002.14091.09081.79731.7842

picture of Methyl nitrate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O4 C5 108.903 O2 N1 O3 130.595
O2 N1 O4 116.582 O3 N1 O4 112.823
O4 C5 H6 102.332 O4 C5 H7 111.319
O4 C5 H8 111.319 H6 C5 H7 110.981
H6 C5 H8 110.981 H7 C5 H8 109.744
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.500     0.727
2 O -0.248     -0.308
3 O -0.231     -0.305
4 O -0.339     -0.356
5 C -0.314     -0.072
6 H 0.219     0.132
7 H 0.207     0.092
8 H 0.207     0.092


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.835 -2.495 0.000 2.631
CHELPG        
AIM        
ESP -0.868 -2.535 0.000 2.680


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.659 0.389 0.000
y 0.389 -25.966 0.000
z 0.000 0.000 -27.202
Traceless
 xyz
x -5.075 0.389 0.000
y 0.389 3.465 0.000
z 0.000 0.000 1.610
Polar
3z2-r23.221
x2-y2-5.693
xy0.389
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.487 0.513 0.000
y 0.513 5.783 0.000
z 0.000 0.000 2.146


<r2> (average value of r2) Å2
<r2> 106.942
(<r2>)1/2 10.341