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

using model chemistry: HF/CEP-31G*

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-31G*
 hartrees
Energy at 0K-63.829180
Energy at 298.15K-63.835168
Nuclear repulsion energy107.020521
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-31G*
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' 3397 3050 23.46      
2 A' 3283 2948 32.24      
3 A' 1873 1682 817.34      
4 A' 1632 1466 12.75      
5 A' 1623 1458 103.18      
6 A' 1540 1383 245.80      
7 A' 1324 1189 8.10      
8 A' 1205 1082 212.91      
9 A' 1043 937 32.73      
10 A' 773 694 1.92      
11 A' 654 588 21.72      
12 A' 379 340 5.19      
13 A" 3390 3044 35.41      
14 A" 1615 1451 6.06      
15 A" 1283 1152 3.24      
16 A" 879 789 26.40      
17 A" 252 227 0.69      
18 A" 139 125 2.78      

Unscaled Zero Point Vibrational Energy (zpe) 13141.7 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 11801.2 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-31G*
ABC
0.40986 0.16029 0.11781

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.624 0.000
O2 -1.200 0.549 0.000
O3 0.674 1.608 0.000
O4 0.702 -0.519 0.000
C5 -0.083 -1.724 0.000
H6 0.669 -2.504 0.000
H7 -0.697 -1.774 0.892
H8 -0.697 -1.774 -0.892

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 H6 H7 H8
N11.20261.19291.34132.34893.19812.65152.6515
O21.20262.15252.18222.53303.58012.53922.5392
O31.19292.15252.12703.41654.11143.75663.7566
O41.34132.18222.12701.43801.98482.08082.0808
C52.34892.53303.41651.43801.08351.08461.0846
H63.19813.58014.11141.98481.08351.78791.7879
H72.65152.53923.75662.08081.08461.78791.7849
H82.65152.53923.75662.08081.08461.78791.7849

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 115.327 O2 N1 O3 127.947
O2 N1 O4 118.040 O3 N1 O4 114.013
O4 C5 H6 102.935 O4 C5 H7 110.362
O4 C5 H8 110.362 H6 C5 H7 111.098
H6 C5 H8 111.098 H7 C5 H8 110.743
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.234      
2 O -0.177      
3 O -0.147      
4 O -0.185      
5 C -0.279      
6 H 0.194      
7 H 0.180      
8 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.206 -3.989 0.000 3.995
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.208 0.069 0.000
y 0.069 -26.776 0.000
z 0.000 0.000 -26.697
Traceless
 xyz
x -5.472 0.069 0.000
y 0.069 2.676 0.000
z 0.000 0.000 2.795
Polar
3z2-r25.591
x2-y2-5.432
xy0.069
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.606 0.545 0.000
y 0.545 5.247 0.000
z 0.000 0.000 2.646


<r2> (average value of r2) Å2
<r2> 80.539
(<r2>)1/2 8.974