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All results from a given calculation for CH3NO (nitrosomethane)

using model chemistry: mPW1PW91/STO-3G

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/STO-3G
 hartrees
Energy at 0K-167.544783
Energy at 298.15K-167.548308
HF Energy-167.544783
Nuclear repulsion energy67.321381
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/STO-3G
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' 3532 3105 1.04      
2 A' 3327 2924 4.51      
3 A' 1681 1478 6.38      
4 A' 1639 1440 15.26      
5 A' 1486 1306 6.51      
6 A' 1164 1023 18.48      
7 A' 891 783 16.47      
8 A' 533 468 0.22      
9 A" 3520 3094 0.41      
10 A" 1640 1441 6.73      
11 A" 997 877 0.01      
12 A" 146 129 1.65      

Unscaled Zero Point Vibrational Energy (zpe) 10278.0 cm-1
Scaled (by 0.8789) Zero Point Vibrational Energy (zpe) 9033.3 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/STO-3G
ABC
1.79451 0.35466 0.31396

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.991 -0.598 0.000
N2 0.000 0.628 0.000
O3 1.206 0.220 0.000
H4 -0.451 -1.556 0.000
H5 -1.625 -0.507 0.895
H6 -1.625 -0.507 -0.895

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.57682.34501.10011.10051.1005
N21.57681.27312.23032.17452.1745
O32.34501.27312.42953.05673.0567
H41.10012.23032.42951.81141.8114
H51.10052.17453.05671.81141.7907
H61.10052.17453.05671.81141.7907

picture of nitrosomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 110.287 N2 C1 H4 111.616
N2 C1 H5 107.289 N2 C1 H6 107.289
H4 C1 H5 110.800 H4 C1 H6 110.800
H5 C1 H6 108.899
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.201      
2 N -0.020      
3 O -0.068      
4 H 0.092      
5 H 0.099      
6 H 0.099      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.007 -1.200 0.000 1.567
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.487 0.434 0.000
y 0.434 -17.329 0.000
z 0.000 0.000 -15.164
Traceless
 xyz
x -0.241 0.434 0.000
y 0.434 -1.504 0.000
z 0.000 0.000 1.745
Polar
3z2-r23.489
x2-y20.842
xy0.434
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.555 0.270 0.000
y 0.270 1.309 0.000
z 0.000 0.000 1.168


<r2> (average value of r2) Å2
<r2> 43.048
(<r2>)1/2 6.561