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

using model chemistry: HF/STO-3G

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/STO-3G
 hartrees
Energy at 0K-240.424687
Energy at 298.15K 
HF Energy-240.424687
Nuclear repulsion energy120.846755
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/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' 3759 3070 5.09 27.24 0.75 0.86
2 A' 3569 2914 4.85 34.34 0.03 0.06
3 A' 1744 1424 7.42 14.50 0.75 0.86
4 A' 1651 1348 0.79 1.53 0.74 0.85
5 A' 1549 1265 13.79 11.89 0.51 0.67
6 A' 1245 1016 0.14 1.56 0.75 0.86
7 A' 1017 830 1.11 13.93 0.13 0.22
8 A' 617 503 29.47 4.63 0.68 0.81
9 A' 553 452 2.79 1.15 0.75 0.85
10 A" 3779 3085 6.44 23.18 0.75 0.86
11 A" 1804 1473 129.71 1.82 0.75 0.86
12 A" 1740 1421 76.01 12.92 0.75 0.86
13 A" 1202 982 30.83 4.45 0.75 0.86
14 A" 448 365 2.47 1.19 0.75 0.86
15 A" 23i 19i 0.01 0.24 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12326.0 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 10064.2 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/STO-3G
ABC
0.38189 0.33082 0.18346

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -1.363 0.000
N2 -0.004 0.167 0.000
H3 1.038 -1.698 0.000
H4 -0.509 -1.701 0.901
H5 -0.509 -1.701 -0.901
O6 0.000 0.757 -1.131
O7 0.000 0.757 1.131

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.52981.08991.08831.08832.40312.4031
N21.52982.13612.13392.13391.27571.2757
H31.08992.13611.78961.78962.89552.8955
H41.08832.13391.78961.80103.22922.5209
H51.08832.13391.78961.80102.52093.2292
O62.40311.27572.89553.22922.52092.2615
O72.40311.27572.89552.52093.22922.2615

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 117.579 C1 N2 O7 117.579
N2 C1 H3 108.077 N2 C1 H4 107.994
N2 C1 H5 107.994 H3 C1 H4 110.486
H3 C1 H5 110.486 H4 C1 H5 111.669
O6 N2 O7 124.838
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.097      
2 N 0.135      
3 H 0.107      
4 H 0.109      
5 H 0.109      
6 O -0.182      
7 O -0.182      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.015 -3.173 0.000 3.173
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.602 -0.033 0.000
y -0.033 -20.288 0.000
z 0.000 0.000 -24.198
Traceless
 xyz
x 2.641 -0.033 0.000
y -0.033 1.611 0.000
z 0.000 0.000 -4.252
Polar
3z2-r2-8.504
x2-y20.686
xy-0.033
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.115 -0.015 0.000
y -0.015 2.149 0.000
z 0.000 0.000 3.496


<r2> (average value of r2) Å2
<r2> 66.205
(<r2>)1/2 8.137