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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: PBEPBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/3-21G*
 hartrees
Energy at 0K-168.651086
Energy at 298.15K-168.654580
HF Energy-168.651086
Nuclear repulsion energy67.668565
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 PBEPBE/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' 3106 2962 8.66      
2 A' 2974 2836 0.18      
3 A' 1470 1401 15.24      
4 A' 1338 1276 4.69      
5 A' 1274 1215 54.18      
6 A' 1071 1021 22.11      
7 A' 695 663 42.03      
8 A' 513 490 0.03      
9 A" 3061 2919 3.49      
10 A" 1463 1395 14.57      
11 A" 907 865 0.01      
12 A" 131 125 3.21      

Unscaled Zero Point Vibrational Energy (zpe) 9001.7 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 8583.1 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 PBEPBE/3-21G*
ABC
1.81164 0.36063 0.31915

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.992 -0.575 0.000
N2 0.000 0.618 0.000
O3 1.205 0.195 0.000
H4 -0.433 -1.522 0.000
H5 -1.628 -0.457 0.895
H6 -1.628 -0.457 -0.895

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.55122.32841.09951.10401.1040
N21.55121.27722.18292.14612.1461
O32.32841.27722.37343.04173.0417
H41.09952.18292.37341.83321.8332
H51.10402.14613.04171.83321.7901
H61.10402.14613.04171.83321.7901

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 110.441 N2 C1 H4 109.698
N2 C1 H5 106.639 N2 C1 H6 106.639
H4 C1 H5 112.594 H4 C1 H6 112.594
H5 C1 H6 108.337
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.520      
2 N 0.041      
3 O -0.238      
4 H 0.227      
5 H 0.245      
6 H 0.245      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.917 -1.307 0.000 2.320
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.913 0.373 0.000
y 0.373 -18.889 0.000
z 0.000 0.000 -16.437
Traceless
 xyz
x -0.250 0.373 0.000
y 0.373 -1.713 0.000
z 0.000 0.000 1.964
Polar
3z2-r23.928
x2-y20.975
xy0.373
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.136 0.328 0.000
y 0.328 2.535 0.000
z 0.000 0.000 2.133


<r2> (average value of r2) Å2
<r2> 43.391
(<r2>)1/2 6.587