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

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-243.641178
Energy at 298.15K-243.645726
Nuclear repulsion energy119.303085
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 B3LYP/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' 3183 3072 5.51      
2 A' 3066 2959 7.76      
3 A' 1555 1500 9.96      
4 A' 1474 1423 5.63      
5 A' 1377 1329 81.05      
6 A' 1147 1107 0.25      
7 A' 955 921 79.65      
8 A' 820 792 65.02      
9 A' 657 634 50.44      
10 A' 343 331 3.16      
11 A" 3130 3020 20.34      
12 A" 1539 1485 12.53      
13 A" 1142 1102 0.03      
14 A" 347 335 3.79      
15 A" 170 164 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 10452.9 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 10086.0 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 B3LYP/3-21G
ABC
0.61743 0.24009 0.17871

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.337 0.322 0.000
O2 0.000 0.952 0.000
H3 2.027 1.165 0.000
H4 1.476 -0.299 0.889
H5 1.476 -0.299 -0.889
N6 -1.091 -0.058 0.000
O7 -0.670 -1.213 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.47801.08891.09321.09322.45822.5274
O21.47802.03792.12902.12901.48712.2666
H31.08892.03791.79891.79893.34953.5958
H41.09322.12901.79891.77792.72752.4965
H51.09322.12901.79891.77792.72752.4965
N62.45821.48713.34952.72752.72751.2296
O72.52742.26663.59582.49652.49651.2296

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 112.000 O2 C1 H3 104.080
O2 C1 H4 110.903 O2 C1 H5 110.903
O2 N6 O7 112.750 H3 C1 H4 111.055
H3 C1 H5 111.055 H4 C1 H5 108.810
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.365     0.243
2 O -0.336     -0.255
3 H 0.230     0.006
4 H 0.217     0.026
5 H 0.217     0.026
6 N 0.304     0.070
7 O -0.268     -0.117


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.128 -0.129 0.000 2.132
CHELPG        
AIM        
ESP 2.000 -0.171 0.000 2.008


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.082 0.668 0.000
y 0.668 -25.660 0.000
z 0.000 0.000 -21.736
Traceless
 xyz
x 2.616 0.668 0.000
y 0.668 -4.251 0.000
z 0.000 0.000 1.634
Polar
3z2-r23.268
x2-y24.578
xy0.668
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.888 -1.814 0.000
y -1.814 3.973 0.000
z 0.000 0.000 2.168


<r2> (average value of r2) Å2
<r2> 68.170
(<r2>)1/2 8.257