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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-169.760353
Energy at 298.15K-169.764067
HF Energy-169.760353
Nuclear repulsion energy70.725175
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 mPW1PW91/6-31G(2df,p)
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' 3174 3030 9.90      
2 A' 3049 2911 1.69      
3 A' 1732 1653 72.19      
4 A' 1454 1388 20.92      
5 A' 1371 1309 21.70      
6 A' 1161 1109 15.61      
7 A' 867 827 23.46      
8 A' 579 552 1.87      
9 A" 3145 3002 2.47      
10 A" 1454 1389 9.89      
11 A" 966 922 1.00      
12 A" 172 165 1.88      

Unscaled Zero Point Vibrational Energy (zpe) 9560.9 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 9127.8 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 mPW1PW91/6-31G(2df,p)
ABC
2.06227 0.38696 0.34675

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.939 -0.571 0.000
N2 0.000 0.568 0.000
O3 1.150 0.237 0.000
H4 -0.411 -1.527 0.000
H5 -1.578 -0.459 0.880
H6 -1.578 -0.459 -0.880

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.47642.23941.09191.09401.0940
N21.47641.19662.13552.07872.0787
O32.23941.19662.35562.95002.9500
H41.09192.13552.35561.81101.8110
H51.09402.07872.95001.81101.7602
H61.09402.07872.95001.81101.7602

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 113.403 N2 C1 H4 111.628
N2 C1 H5 106.999 N2 C1 H6 106.999
H4 C1 H5 111.890 H4 C1 H6 111.890
H5 C1 H6 107.128
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.352      
2 N 0.067      
3 O -0.227      
4 H 0.158      
5 H 0.177      
6 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.882 -1.312 0.000 2.295
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.692 0.341 0.000
y 0.341 -18.605 0.000
z 0.000 0.000 -16.317
Traceless
 xyz
x -0.231 0.341 0.000
y 0.341 -1.600 0.000
z 0.000 0.000 1.831
Polar
3z2-r23.662
x2-y20.913
xy0.341
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.259 0.360 0.000
y 0.360 3.046 0.000
z 0.000 0.000 2.622


<r2> (average value of r2) Å2
<r2> 40.940
(<r2>)1/2 6.398