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

using model chemistry: HF/SDD

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 HF/SDD
 hartrees
Energy at 0K-243.582639
Energy at 298.15K 
HF Energy-243.582639
Nuclear repulsion energy124.301366
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/SDD
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' 3388 3050 5.57 41.10 0.71 0.83
2 A' 3275 2949 3.17 126.43 0.02 0.04
3 A' 1628 1466 21.76 11.47 0.75 0.86
4 A' 1589 1431 0.97 2.20 0.34 0.50
5 A' 1510 1360 49.72 15.63 0.33 0.50
6 A' 1279 1151 1.91 1.84 0.75 0.85
7 A' 973 876 0.33 12.44 0.11 0.21
8 A' 693 624 50.28 6.00 0.58 0.74
9 A' 651 586 12.57 2.36 0.72 0.84
10 A" 3421 3080 1.13 35.08 0.75 0.86
11 A" 1646 1482 131.68 6.76 0.75 0.86
12 A" 1592 1433 441.55 3.92 0.75 0.86
13 A" 1212 1092 113.43 4.40 0.75 0.86
14 A" 504 453 1.60 2.35 0.75 0.86
15 A" 18 16 0.05 0.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11688.2 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 10524.0 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/SDD
ABC
0.40610 0.34892 0.19447

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.328 0.000
N2 -0.009 0.163 0.000
H3 1.034 -1.639 0.000
H4 -0.494 -1.661 0.894
H5 -0.494 -1.661 -0.894
O6 0.001 0.736 -1.095
O7 0.001 0.736 1.095

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.49101.07881.07491.07492.33642.3364
N21.49102.08212.08852.08851.23561.2356
H31.07882.08211.77031.77032.81182.8118
H41.07492.08851.77031.78853.15382.4558
H51.07492.08851.77031.78852.45583.1538
O62.33641.23562.81183.15382.45582.1892
O72.33641.23562.81182.45583.15382.1892

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 117.629 C1 N2 O7 117.629
N2 C1 H3 107.140 N2 C1 H4 107.863
N2 C1 H5 107.863 H3 C1 H4 110.570
H3 C1 H5 110.570 H4 C1 H5 112.607
O6 N2 O7 124.724
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.402      
2 N 0.314      
3 H 0.249      
4 H 0.246      
5 H 0.246      
6 O -0.327      
7 O -0.327      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.020 -4.711 0.000 4.711
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.844 -0.073 0.000
y -0.073 -22.510 0.000
z 0.000 0.000 -28.449
Traceless
 xyz
x 3.636 -0.073 0.000
y -0.073 2.637 0.000
z 0.000 0.000 -6.272
Polar
3z2-r2-12.545
x2-y20.666
xy-0.073
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.206 -0.054 0.000
y -0.054 3.295 0.000
z 0.000 0.000 5.429


<r2> (average value of r2) Å2
<r2> 65.126
(<r2>)1/2 8.070