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

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

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/6-31G(2df,p)
 hartrees
Energy at 0K-243.690775
Energy at 298.15K 
HF Energy-243.690775
Nuclear repulsion energy127.757958
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/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' 3328 3014 2.62 43.52 0.71 0.83
2 A' 3230 2925 2.24 93.44 0.02 0.04
3 A' 1679 1520 100.34 12.91 0.34 0.51
4 A' 1594 1443 11.12 9.41 0.74 0.85
5 A' 1548 1402 0.08 0.51 0.74 0.85
6 A' 1263 1143 2.11 0.75 0.74 0.85
7 A' 1049 950 5.28 10.35 0.08 0.14
8 A' 746 676 37.86 4.14 0.45 0.62
9 A' 699 633 13.68 1.62 0.59 0.74
10 A" 3362 3045 1.15 37.63 0.75 0.86
11 A" 1860 1684 586.21 0.88 0.75 0.86
12 A" 1582 1433 38.36 9.22 0.75 0.86
13 A" 1218 1103 29.22 2.67 0.75 0.86
14 A" 527 478 1.60 0.88 0.75 0.86
15 A" 12i 11i 0.04 0.39 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11837.2 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 10718.6 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/6-31G(2df,p)
ABC
0.43388 0.36336 0.20533

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -1.303 0.000
N2 -0.009 0.177 0.000
H3 1.039 -1.603 0.000
H4 -0.491 -1.638 0.899
H5 -0.491 -1.638 -0.899
O6 0.000 0.716 -1.056
O7 0.000 0.716 1.056

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48011.08131.07731.07732.27822.2782
N21.48012.06612.08152.08151.18531.1853
H31.08132.06611.77441.77442.75172.7517
H41.07732.08151.77441.79743.09832.4093
H51.07732.08151.77441.79742.40933.0983
O62.27821.18532.75173.09832.40932.1113
O72.27821.18532.75172.40933.09832.1113

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 117.034 C1 N2 O7 117.034
N2 C1 H3 106.498 N2 C1 H4 107.920
N2 C1 H5 107.920 H3 C1 H4 110.576
H3 C1 H5 110.576 H4 C1 H5 113.063
O6 N2 O7 125.915
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.304      
2 N 0.726      
3 H 0.201      
4 H 0.200      
5 H 0.200      
6 O -0.512      
7 O -0.512      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.024 -3.828 0.000 3.828
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.256 -0.070 0.000
y -0.070 -21.658 0.000
z 0.000 0.000 -26.271
Traceless
 xyz
x 2.709 -0.070 0.000
y -0.070 2.105 0.000
z 0.000 0.000 -4.814
Polar
3z2-r2-9.628
x2-y20.402
xy-0.070
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.744 -0.022 0.000
y -0.022 3.757 0.000
z 0.000 0.000 4.721


<r2> (average value of r2) Å2
<r2> 61.951
(<r2>)1/2 7.871