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

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/SDD
 hartrees
Energy at 0K-318.366129
Energy at 298.15K-318.371878
Nuclear repulsion energy186.740391
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 HF/SDD
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' 3417 3077 6.61      
2 A' 3282 2955 19.89      
3 A' 1644 1480 51.04      
4 A' 1604 1444 220.23      
5 A' 1595 1436 441.28      
6 A' 1362 1226 244.92      
7 A' 1297 1168 20.18      
8 A' 1118 1006 166.14      
9 A' 944 850 24.90      
10 A' 701 631 2.94      
11 A' 600 540 31.23      
12 A' 345 310 7.67      
13 A" 3401 3062 20.45      
14 A" 1629 1467 15.52      
15 A" 1271 1144 1.73      
16 A" 789 710 29.32      
17 A" 211 190 1.55      
18 A" 126 113 5.50      

Unscaled Zero Point Vibrational Energy (zpe) 12667.4 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 11405.7 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 HF/SDD
ABC
0.39302 0.15224 0.11205

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.613 0.000
O2 -1.238 0.543 0.000
O3 0.684 1.619 0.000
O4 0.706 -0.563 0.000
C5 -0.085 -1.803 0.000
H6 0.677 -2.561 0.000
H7 -0.693 -1.848 0.887
H8 -0.693 -1.848 -0.887

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 H6 H7 H8
N11.23951.21691.37172.41733.24552.70622.7062
O21.23952.20262.23612.61363.64692.60772.6077
O31.21692.20262.18263.50764.18063.83493.8349
O41.37172.23612.18261.47051.99832.09632.0963
C52.41732.61363.50761.47051.07481.07631.0763
H63.24553.64694.18061.99831.07481.78081.7808
H72.70622.60773.83492.09631.07631.78081.7739
H82.70622.60773.83492.09631.07631.78081.7739

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 116.493 O2 N1 O3 127.444
O2 N1 O4 117.731 O3 N1 O4 114.825
O4 C5 H6 102.337 O4 C5 H7 109.829
O4 C5 H8 109.829 H6 C5 H7 111.761
H6 C5 H8 111.761 H7 C5 H8 110.991
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.498      
2 O -0.320      
3 O -0.253      
4 O -0.326      
5 C -0.293      
6 H 0.226      
7 H 0.235      
8 H 0.235      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.309 -4.541 0.000 4.552
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.253 0.249 0.000
y 0.249 -26.654 0.000
z 0.000 0.000 -27.225
Traceless
 xyz
x -7.314 0.249 0.000
y 0.249 4.085 0.000
z 0.000 0.000 3.229
Polar
3z2-r26.458
x2-y2-7.599
xy0.249
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.853 0.712 0.000
y 0.712 5.452 0.000
z 0.000 0.000 2.369


<r2> (average value of r2) Å2
<r2> 102.763
(<r2>)1/2 10.137