return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: HF/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-318.511054
Energy at 298.15K-318.517102
Nuclear repulsion energy193.478862
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/6-31G(2df,p)
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' 3328 3013 9.19      
2 A' 3224 2919 17.99      
3 A' 1894 1715 720.73      
4 A' 1633 1479 60.59      
5 A' 1618 1465 75.77      
6 A' 1544 1398 186.63      
7 A' 1325 1200 7.99      
8 A' 1211 1096 204.90      
9 A' 1059 958 39.05      
10 A' 797 722 0.93      
11 A' 675 611 18.89      
12 A' 386 349 5.58      
13 A" 3323 3009 15.22      
14 A" 1604 1453 7.77      
15 A" 1283 1162 2.68      
16 A" 937 849 28.80      
17 A" 241 218 0.52      
18 A" 147 133 1.94      

Unscaled Zero Point Vibrational Energy (zpe) 13112.9 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 11873.7 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/6-31G(2df,p)
ABC
0.42283 0.16381 0.12074

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.595 0.000
O2 -1.179 0.533 0.000
O3 0.676 1.551 0.000
O4 0.681 -0.545 0.000
C5 -0.104 -1.733 0.000
H6 0.633 -2.521 0.000
H7 -0.719 -1.783 0.886
H8 -0.719 -1.783 -0.886

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 H6 H7 H8
N11.18031.17081.32792.33023.17962.63732.6373
O21.18032.11582.14962.50773.55092.52192.5219
O31.17082.11582.09563.37514.07193.72073.7207
O41.32792.14962.09561.42421.97662.06812.0681
C52.33022.50773.37511.42421.07921.07951.0795
H63.17963.55094.07191.97661.07921.77691.7769
H72.63732.52193.72072.06811.07951.77691.7724
H82.63732.52193.72072.06811.07951.77691.7724

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 115.668 O2 N1 O3 128.294
O2 N1 O4 117.850 O3 N1 O4 113.856
O4 C5 H6 103.430 O4 C5 H7 110.635
O4 C5 H8 110.635 H6 C5 H7 110.800
H6 C5 H8 110.800 H7 C5 H8 110.363
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 1.156      
2 O -0.527      
3 O -0.502      
4 O -0.474      
5 C -0.188      
6 H 0.182      
7 H 0.177      
8 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.202 -3.645 0.000 3.650
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.382 0.027 0.000
y 0.027 -26.227 0.000
z 0.000 0.000 -26.476
Traceless
 xyz
x -5.030 0.027 0.000
y 0.027 2.702 0.000
z 0.000 0.000 2.328
Polar
3z2-r24.656
x2-y2-5.155
xy0.027
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.552 0.407 0.000
y 0.407 5.369 0.000
z 0.000 0.000 3.069


<r2> (average value of r2) Å2
<r2> 96.154
(<r2>)1/2 9.806