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

using model chemistry: ROMP2/6-311+G(3df,2p)

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 ROMP2/6-311+G(3df,2p)
 hartrees
Energy at 0K-244.621605
Energy at 298.15K 
HF Energy-243.753629
Nuclear repulsion energy124.966483
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 ROMP2/6-311+G(3df,2p)
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' 3228 3228        
2 A' 3121 3121        
3 A' 1500 1500        
4 A' 1435 1435        
5 A' 1424 1424        
6 A' 1150 1150        
7 A' 949 949        
8 A' 678 678        
9 A' 609 609        
10 A" 3254 3254        
11 A" 1760 1760        
12 A" 1494 1494        
13 A" 1131 1131        
14 A" 485 485        
15 A" 41i 41i        

Unscaled Zero Point Vibrational Energy (zpe) 11087.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11087.4 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 ROMP2/6-311+G(3df,2p)
ABC
0.40845 0.35485 0.19693

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.316 0.000
N2 -0.010 0.168 0.000
H3 1.043 -1.622 0.000
H4 -0.493 -1.654 0.902
H5 -0.493 -1.654 -0.902
O6 0.001 0.728 -1.091
O7 0.001 0.728 1.091

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48391.08611.08291.08292.31692.3169
N21.48392.07682.09002.09001.22611.2261
H31.08612.07681.78161.78162.79272.7927
H41.08292.09001.78161.80463.14532.4406
H51.08292.09001.78161.80462.44063.1453
O62.31691.22612.79273.14532.44062.1810
O72.31691.22612.79272.44063.14532.1810

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 117.189 C1 N2 O7 117.189
N2 C1 H3 106.804 N2 C1 H4 108.010
N2 C1 H5 108.010 H3 C1 H4 110.453
H3 C1 H5 110.453 H4 C1 H5 112.865
O6 N2 O7 125.599
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.278      
2 N 0.618      
3 H 0.150      
4 H 0.157      
5 H 0.157      
6 O -0.679      
7 O -0.679      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 64.123
(<r2>)1/2 8.008