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

using model chemistry: HF/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-63.838701
Energy at 298.15K-63.844692
Nuclear repulsion energy107.261052
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/CEP-121G*
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' 3364 3039 14.13      
2 A' 3250 2936 24.87      
3 A' 1840 1662 811.80      
4 A' 1633 1475 0.55      
5 A' 1620 1464 92.58      
6 A' 1528 1380 271.17      
7 A' 1326 1198 8.14      
8 A' 1198 1083 210.09      
9 A' 1042 941 34.27      
10 A' 775 700 1.66      
11 A' 656 592 21.46      
12 A' 378 341 5.30      
13 A" 3356 3032 24.49      
14 A" 1616 1460 6.67      
15 A" 1283 1159 3.71      
16 A" 884 799 27.91      
17 A" 244 220 0.75      
18 A" 140 126 2.46      

Unscaled Zero Point Vibrational Energy (zpe) 13065.7 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 11803.6 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/CEP-121G*
ABC
0.41261 0.16064 0.11820

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.625 0.000
O2 -1.195 0.552 0.000
O3 0.674 1.603 0.000
O4 0.700 -0.519 0.000
C5 -0.085 -1.723 0.000
H6 0.664 -2.501 0.000
H7 -0.697 -1.774 0.889
H8 -0.697 -1.774 -0.889

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 H6 H7 H8
N11.19741.18751.34092.34993.19582.65182.6518
O21.19742.14402.17692.53173.57462.53962.5396
O31.18752.14402.12183.41184.10413.75163.7516
O41.34092.17692.12181.43811.98282.07822.0782
C52.34992.53173.41181.43811.07981.08031.0803
H63.19583.57464.10411.98281.07981.78061.7806
H72.65182.53963.75162.07821.08031.78061.7777
H82.65182.53963.75162.07821.08031.78061.7777

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 115.424 O2 N1 O3 128.048
O2 N1 O4 117.984 O3 N1 O4 113.969
O4 C5 H6 102.975 O4 C5 H7 110.414
O4 C5 H8 110.414 H6 C5 H7 111.040
H6 C5 H8 111.040 H7 C5 H8 110.723
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.705      
2 O -0.394      
3 O -0.360      
4 O -0.271      
5 C -0.278      
6 H 0.202      
7 H 0.197      
8 H 0.197      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.197 -3.941 0.000 3.946
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.162 0.059 0.000
y 0.059 -26.708 0.000
z 0.000 0.000 -26.757
Traceless
 xyz
x -5.430 0.059 0.000
y 0.059 2.751 0.000
z 0.000 0.000 2.678
Polar
3z2-r25.356
x2-y2-5.454
xy0.059
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.803 0.490 0.000
y 0.490 5.412 0.000
z 0.000 0.000 2.945


<r2> (average value of r2) Å2
<r2> 80.327
(<r2>)1/2 8.963