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

using model chemistry: mPW1PW91/6-31+G**

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 mPW1PW91/6-31+G**
 hartrees
Energy at 0K-244.962913
Energy at 298.15K 
HF Energy-244.962913
Nuclear repulsion energy125.270650
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 mPW1PW91/6-31+G**
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 3065 1.38      
2 A' 3116 2966 0.63      
3 A' 1493 1421 48.15      
4 A' 1475 1404 55.87      
5 A' 1418 1350 14.10      
6 A' 1143 1088 1.40      
7 A' 954 908 10.58      
8 A' 678 645 19.66      
9 A' 621 591 4.63      
10 A" 3253 3096 0.00      
11 A" 1709 1627 366.48      
12 A" 1472 1401 38.39      
13 A" 1120 1066 9.71      
14 A" 487 463 0.86      
15 A" 34 32 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 11096.2 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 10561.4 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 mPW1PW91/6-31+G**
ABC
0.41259 0.35443 0.19780

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -1.317 0.000
N2 -0.011 0.171 0.000
H3 1.048 -1.620 0.000
H4 -0.492 -1.659 0.906
H5 -0.492 -1.659 -0.906
O6 0.000 0.728 -1.084
O7 0.000 0.728 1.084

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48791.09021.08651.08652.31442.3144
N21.48792.08052.09802.09801.21891.2189
H31.09022.08051.78701.78702.79042.7904
H41.08652.09801.78701.81163.14652.4438
H51.08652.09801.78701.81162.44383.1465
O62.31441.21892.79043.14652.44382.1685
O72.31441.21892.79042.44383.14652.1685

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 117.177 C1 N2 O7 117.177
N2 C1 H3 106.590 N2 C1 H4 108.158
N2 C1 H5 108.158 H3 C1 H4 110.363
H3 C1 H5 110.363 H4 C1 H5 112.957
O6 N2 O7 125.623
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.426      
2 N 0.083      
3 H 0.213      
4 H 0.210      
5 H 0.210      
6 O -0.145      
7 O -0.145      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.030 -3.780 0.000 3.780
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.682 -0.096 0.000
y -0.096 -22.299 0.000
z 0.000 0.000 -26.647
Traceless
 xyz
x 2.791 -0.096 0.000
y -0.096 1.866 0.000
z 0.000 0.000 -4.657
Polar
3z2-r2-9.314
x2-y20.617
xy-0.096
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.017 -0.051 0.000
y -0.051 4.509 0.000
z 0.000 0.000 5.478


<r2> (average value of r2) Å2
<r2> 63.954
(<r2>)1/2 7.997