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

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-318.273982
Energy at 298.15K-318.279516
Nuclear repulsion energy182.533542
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 B3PW91/3-21G*
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' 3182 3053 2.98      
2 A' 3082 2957 7.92      
3 A' 1559 1495 15.44      
4 A' 1480 1420 36.28      
5 A' 1461 1402 138.98      
6 A' 1153 1106 15.21      
7 A' 1142 1096 182.81      
8 A' 981 941 74.53      
9 A' 823 789 84.98      
10 A' 626 600 4.69      
11 A' 528 507 1.05      
12 A' 331 318 4.45      
13 A" 3170 3042 14.26      
14 A" 1531 1469 13.06      
15 A" 1154 1107 0.02      
16 A" 678 650 15.90      
17 A" 210 201 1.34      
18 A" 145 139 3.44      

Unscaled Zero Point Vibrational Energy (zpe) 11617.7 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 11146.0 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 B3PW91/3-21G*
ABC
0.36631 0.14987 0.10856

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.638 0.000
O2 -1.252 0.525 0.000
O3 0.727 1.648 0.000
O4 0.773 -0.631 0.000
C5 -0.156 -1.772 0.000
H6 0.520 -2.629 0.000
H7 -0.784 -1.771 0.893
H8 -0.784 -1.771 -0.893

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 H6 H7 H8
N11.25711.24471.48572.41533.30842.68642.6864
O21.25712.27602.33122.54463.61742.50752.5075
O31.24472.27602.27943.53274.28253.84363.8436
O41.48572.33122.27941.47182.01442.12652.1265
C52.41532.54463.53271.47181.09171.09181.0918
H63.30843.61744.28252.01441.09171.79831.7983
H72.68642.50753.84362.12651.09181.79831.7869
H82.68642.50753.84362.12651.09181.79831.7869

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 109.505 O2 N1 O3 130.936
O2 N1 O4 116.163 O3 N1 O4 112.901
O4 C5 H6 102.583 O4 C5 H7 111.230
O4 C5 H8 111.230 H6 C5 H7 110.897
H6 C5 H8 110.897 H7 C5 H8 109.840
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.516      
2 O -0.280      
3 O -0.261      
4 O -0.313      
5 C -0.407      
6 H 0.253      
7 H 0.246      
8 H 0.246      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.658 -2.891 0.000 2.965
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.380 0.252 0.000
y 0.252 -25.471 0.000
z 0.000 0.000 -26.695
Traceless
 xyz
x -5.297 0.252 0.000
y 0.252 3.567 0.000
z 0.000 0.000 1.731
Polar
3z2-r23.461
x2-y2-5.910
xy0.252
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 104.182
(<r2>)1/2 10.207