return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-244.855415
Energy at 298.15K 
HF Energy-244.576066
Nuclear repulsion energy124.853614
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 B2PLYP=FULLultrafine/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' 3216 3216 1.45      
2 A' 3115 3115 1.11      
3 A' 1494 1494 9.66      
4 A' 1431 1431 17.10      
5 A' 1414 1414 62.06      
6 A' 1151 1151 0.95      
7 A' 933 933 8.33      
8 A' 670 670 22.00      
9 A' 613 613 4.48      
10 A" 3244 3244 0.28      
11 A" 1665 1665 198.72      
12 A" 1483 1483 33.59      
13 A" 1121 1121 7.46      
14 A" 478 478 0.59      
15 A" 3 3 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 11014.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11014.7 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 B2PLYP=FULLultrafine/6-31G(2df,p)
ABC
0.40754 0.35397 0.19647

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.318 0.000
N2 -0.010 0.172 0.000
H3 1.045 -1.627 0.000
H4 -0.494 -1.658 0.904
H5 -0.494 -1.658 -0.904
O6 0.001 0.728 -1.092
O7 0.001 0.728 1.092

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.49081.08871.08531.08532.31912.3191
N21.49082.08612.09802.09801.22481.2248
H31.08872.08611.78511.78512.79792.7979
H41.08532.09801.78511.80883.14952.4434
H51.08532.09801.78511.80882.44343.1495
O62.31911.22482.79793.14952.44342.1833
O72.31911.22482.79792.44343.14952.1833

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 116.957 C1 N2 O7 116.957
N2 C1 H3 106.905 N2 C1 H4 108.020
N2 C1 H5 108.020 H3 C1 H4 110.387
H3 C1 H5 110.387 H4 C1 H5 112.884
O6 N2 O7 126.065
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.328      
2 N 0.545      
3 H 0.186      
4 H 0.181      
5 H 0.181      
6 O -0.382      
7 O -0.382      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.037 -3.323 0.000 3.324
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.263 -0.086 0.000
y -0.086 -21.776 0.000
z 0.000 0.000 -25.742
Traceless
 xyz
x 2.496 -0.086 0.000
y -0.086 1.726 0.000
z 0.000 0.000 -4.222
Polar
3z2-r2-8.444
x2-y20.513
xy-0.086
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.823 -0.023 0.000
y -0.023 4.126 0.000
z 0.000 0.000 4.837


<r2> (average value of r2) Å2
<r2> 63.858
(<r2>)1/2 7.991