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All results from a given calculation for CH3NO (nitrosomethane)

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 1A'
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-167.864198
Energy at 298.15K-167.867933
HF Energy-167.864198
Nuclear repulsion energy70.045255
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' 3321 2998 6.68      
2 A' 3216 2903 1.91      
3 A' 1670 1508 9.24      
4 A' 1612 1455 44.57      
5 A' 1542 1392 15.89      
6 A' 1255 1132 15.36      
7 A' 887 800 2.99      
8 A' 598 540 5.48      
9 A" 3291 2970 6.46      
10 A" 1636 1476 14.73      
11 A" 1103 996 1.46      
12 A" 148 134 1.64      

Unscaled Zero Point Vibrational Energy (zpe) 10138.7 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 9151.2 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
2.01368 0.37952 0.33938

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 -0.957 -0.573 0.000
N2 0.000 0.582 0.000
O3 1.164 0.228 0.000
H4 -0.411 -1.504 0.000
H5 -1.579 -0.475 0.879
H6 -1.579 -0.475 -0.879

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.49972.26661.07901.08161.0816
N21.49971.21622.12592.09362.0936
O32.26661.21622.34082.96452.9645
H41.07902.12592.34081.78761.7876
H51.08162.09362.96451.78761.7586
H61.08162.09362.96451.78761.7586

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 112.729 N2 C1 H4 109.982
N2 C1 H5 107.289 N2 C1 H6 107.289
H4 C1 H5 111.654 H4 C1 H6 111.654
H5 C1 H6 108.782
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.457      
2 N 0.060      
3 O -0.341      
4 H 0.239      
5 H 0.250      
6 H 0.250      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.391 -1.601 0.000 2.878
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.682 0.491 0.000
y 0.491 -18.979 0.000
z 0.000 0.000 -16.566
Traceless
 xyz
x -0.909 0.491 0.000
y 0.491 -1.355 0.000
z 0.000 0.000 2.264
Polar
3z2-r24.528
x2-y20.297
xy0.491
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.827 0.120 0.000
y 0.120 2.172 0.000
z 0.000 0.000 2.000


<r2> (average value of r2) Å2
<r2> 41.784
(<r2>)1/2 6.464