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

using model chemistry: MP2/3-21G

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 MP2/3-21G
 hartrees
Energy at 0K-242.763627
Energy at 298.15K-242.768251
HF Energy-242.272915
Nuclear repulsion energy118.116467
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 MP2/3-21G
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' 3225 3079 7.88      
2 A' 3098 2957 9.22      
3 A' 1595 1523 6.72      
4 A' 1512 1443 1.71      
5 A' 1173 1120 10.26      
6 A' 1161 1108 8.54      
7 A' 974 930 129.66      
8 A' 815 778 116.96      
9 A' 668 637 72.72      
10 A' 355 339 2.79      
11 A" 3165 3021 25.25      
12 A" 1586 1514 8.49      
13 A" 1178 1124 0.43      
14 A" 338 323 3.16      
15 A" 218 208 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 10530.0 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 10050.9 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 MP2/3-21G
ABC
0.59291 0.23978 0.17642

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.339 0.312 0.000
O2 0.000 0.963 0.000
H3 2.033 1.151 0.000
H4 1.474 -0.310 0.888
H5 1.474 -0.310 -0.888
N6 -1.098 -0.035 0.000
O7 -0.666 -1.234 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 H4 H5 N6 O7
C11.48921.08811.09321.09322.46232.5322
O21.48922.04142.14122.14121.48392.2955
H31.08812.04141.79881.79883.34803.6014
H41.09322.14121.79881.77692.73572.4949
H51.09322.14121.79881.77692.73572.4949
N62.46231.48393.34802.73572.73571.2744
O72.53222.29553.60142.49492.49491.2744

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 111.828 O2 C1 H3 103.666
O2 C1 H4 111.098 O2 C1 H5 111.098
O2 N6 O7 112.438 H3 C1 H4 111.107
H3 C1 H5 111.107 H4 C1 H5 108.730
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.331     0.299
2 O -0.361     -0.277
3 H 0.219     -0.013
4 H 0.200     0.008
5 H 0.200     0.008
6 N 0.297     0.054
7 O -0.223     -0.079


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.021 -0.423 0.000 2.065
CHELPG        
AIM        
ESP 1.874 -0.469 0.000 1.932


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.658 0.713 0.000
y 0.713 -25.947 0.000
z 0.000 0.000 -22.181
Traceless
 xyz
x 2.405 0.713 0.000
y 0.713 -4.027 0.000
z 0.000 0.000 1.622
Polar
3z2-r23.243
x2-y24.288
xy0.713
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.563 -1.662 0.000
y -1.662 3.772 0.000
z 0.000 0.000 2.157


<r2> (average value of r2) Å2
<r2> 69.101
(<r2>)1/2 8.313