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

using model chemistry: mPW1PW91/3-21G*

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 mPW1PW91/3-21G*
 hartrees
Energy at 0K-243.572453
Energy at 298.15K-243.577085
Nuclear repulsion energy120.289577
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 mPW1PW91/3-21G*
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' 3215 3053 3.75      
2 A' 3090 2934 6.21      
3 A' 1558 1480 11.69      
4 A' 1486 1411 13.79      
5 A' 1411 1340 73.70      
6 A' 1160 1101 0.40      
7 A' 988 938 83.85      
8 A' 847 804 73.71      
9 A' 687 652 44.46      
10 A' 353 335 4.08      
11 A" 3163 3004 16.04      
12 A" 1544 1466 15.30      
13 A" 1155 1097 0.00      
14 A" 356 338 4.22      
15 A" 193 184 0.42      

Unscaled Zero Point Vibrational Energy (zpe) 10603.0 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 10068.6 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 mPW1PW91/3-21G*
ABC
0.62384 0.24559 0.18228

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.325 0.310 0.000
O2 0.000 0.942 0.000
H3 2.019 1.148 0.000
H4 1.460 -0.311 0.888
H5 1.460 -0.311 -0.888
N6 -1.080 -0.047 0.000
O7 -0.666 -1.200 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.46791.08781.09221.09222.43182.4986
O21.46792.02922.11902.11901.46492.2428
H31.08782.02921.79741.79743.32173.5664
H41.09222.11901.79741.77612.70392.4691
H51.09222.11901.79741.77612.70392.4691
N62.43181.46493.32172.70392.70391.2247
O72.49862.24283.56642.46912.46911.2247

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 112.028 O2 C1 H3 104.132
O2 C1 H4 110.874 O2 C1 H5 110.874
O2 N6 O7 112.695 H3 C1 H4 111.066
H3 C1 H5 111.066 H4 C1 H5 108.795
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.429      
2 O -0.351      
3 H 0.256      
4 H 0.242      
5 H 0.242      
6 N 0.318      
7 O -0.279      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.216 -0.115 0.000 2.219
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.066 0.624 0.000
y 0.624 -25.748 0.000
z 0.000 0.000 -21.718
Traceless
 xyz
x 2.667 0.624 0.000
y 0.624 -4.356 0.000
z 0.000 0.000 1.689
Polar
3z2-r23.377
x2-y24.682
xy0.624
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.952 0.798 0.000
y 0.798 3.850 0.000
z 0.000 0.000 2.158


<r2> (average value of r2) Å2
<r2> 67.152
(<r2>)1/2 8.195