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All results from a given calculation for CH3ONO (Methyl nitrite)

using model chemistry: HF/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS cis 1A'
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-242.286364
Energy at 298.15K-242.291166
Nuclear repulsion energy122.350056
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/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' 3350 3034 7.08      
2 A' 3245 2939 10.74      
3 A' 1679 1520 8.93      
4 A' 1640 1485 46.95      
5 A' 1585 1435 47.45      
6 A' 1286 1165 1.87      
7 A' 1116 1011 236.47      
8 A' 908 823 64.10      
9 A' 801 725 18.68      
10 A' 374 339 6.03      
11 A" 3319 3006 23.38      
12 A" 1666 1508 10.42      
13 A" 1266 1146 1.51      
14 A" 322 292 9.18      
15 A" 236 214 0.76      

Unscaled Zero Point Vibrational Energy (zpe) 11396.6 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 10320.7 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/3-21G
ABC
0.66597 0.24637 0.18605

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.339 0.313 0.000
O2 0.000 0.894 0.000
H3 1.994 1.166 0.000
H4 1.491 -0.290 0.881
H5 1.491 -0.290 -0.881
N6 -1.060 -0.035 0.000
O7 -0.699 -1.171 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.46001.07581.07841.07842.42422.5214
O21.46002.01282.09802.09801.40922.1801
H31.07582.01281.77471.77473.28183.5662
H41.07842.09801.77471.76292.71112.5204
H51.07842.09801.77471.76292.71112.5204
N62.42421.40923.28182.71112.71111.1918
O72.52142.18013.56622.52042.52041.1918

picture of Methyl nitrite state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 N6 115.311 O2 C1 H3 104.042
O2 C1 H4 110.585 O2 C1 H5 110.585
O2 N6 O7 113.628 H3 C1 H4 110.940
H3 C1 H5 110.940 H4 C1 H5 109.651
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.303 0.193   0.358
2 O -0.503 -0.181   -0.346
3 H 0.245 -0.217   -0.023
4 H 0.226 -0.124   0.018
5 H 0.226 0.103   0.018
6 N 0.472 0.103   0.155
7 O -0.363 0.124   -0.180


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.317 -0.092 0.000 2.318
CHELPG 2.939 0.446 0.000 2.972
AIM        
ESP 2.160 -0.142 0.000 2.164


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.950 0.448 0.000
y 0.448 -26.842 0.000
z 0.000 0.000 -21.847
Traceless
 xyz
x 3.395 0.448 0.000
y 0.448 -5.444 0.000
z 0.000 0.000 2.049
Polar
3z2-r24.098
x2-y25.892
xy0.448
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.385 1.347 0.000
y 1.347 3.379 0.000
z 0.000 0.000 2.104


<r2> (average value of r2) Å2
<r2> 66.500
(<r2>)1/2 8.155