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All results from a given calculation for CH3NO2 (Methane, nitro-)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS Os out of place 1A'
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-243.559003
Energy at 298.15K 
HF Energy-243.559003
Nuclear repulsion energy121.998731
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 mPW1PW91/3-21G
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' 3221 3075 0.94      
2 A' 3122 2980 0.01      
3 A' 1539 1469 17.86      
4 A' 1431 1366 3.82      
5 A' 1250 1193 87.99      
6 A' 1140 1088 1.89      
7 A' 856 817 5.05      
8 A' 618 590 21.14      
9 A' 553 528 4.49      
10 A" 3258 3110 0.00      
11 A" 1544 1473 0.05      
12 A" 1437 1372 134.99      
13 A" 1093 1043 13.66      
14 A" 437 417 0.35      
15 A" 30 28 0.26      

Unscaled Zero Point Vibrational Energy (zpe) 10764.0 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 10275.3 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 mPW1PW91/3-21G
ABC
0.37946 0.34714 0.18782

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 -1.333 0.000
N2 -0.015 0.169 0.000
H3 1.050 -1.640 0.000
H4 -0.499 -1.660 0.906
H5 -0.499 -1.660 -0.906
O6 0.003 0.736 -1.134
O7 0.003 0.736 1.134

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.50231.09101.08611.08612.36012.3601
N21.50232.09882.09772.09771.26841.2684
H31.09102.09881.79451.79452.83352.8335
H41.08612.09771.79451.81233.18722.4590
H51.08612.09771.79451.81232.45903.1872
O62.36011.26842.83353.18722.45902.2684
O72.36011.26842.83352.45903.18722.2684

picture of Methane, nitro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O6 116.565 C1 N2 O7 116.565
N2 C1 H3 106.989 N2 C1 H4 107.181
N2 C1 H5 107.181 H3 C1 H4 111.029
H3 C1 H5 111.029 H4 C1 H5 113.091
O6 N2 O7 126.816
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.452      
2 N 0.238      
3 H 0.283      
4 H 0.272      
5 H 0.272      
6 O -0.306      
7 O -0.306      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.069 -3.589 0.000 3.590
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.257 -0.166 0.000
y -0.166 -21.599 0.000
z 0.000 0.000 -26.108
Traceless
 xyz
x 2.596 -0.166 0.000
y -0.166 2.084 0.000
z 0.000 0.000 -4.680
Polar
3z2-r2-9.360
x2-y20.342
xy-0.166
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.025 -0.015 0.000
y -0.015 3.321 0.000
z 0.000 0.000 4.506


<r2> (average value of r2) Å2
<r2> 65.928
(<r2>)1/2 8.120