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: BLYP/6-311G*

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 BLYP/6-311G*
 hartrees
Energy at 0K-245.040704
Energy at 298.15K 
HF Energy-245.040704
Nuclear repulsion energy123.104011
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 BLYP/6-311G*
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' 3094 3086 5.54      
2 A' 3006 2998 1.70      
3 A' 1453 1449 11.66      
4 A' 1376 1373 0.55      
5 A' 1306 1302 120.21      
6 A' 1099 1097 0.71      
7 A' 866 864 22.42      
8 A' 621 619 9.01      
9 A' 578 577 4.45      
10 A" 3124 3116 3.32      
11 A" 1529 1525 184.94      
12 A" 1437 1434 67.08      
13 A" 1075 1072 11.69      
14 A" 461 460 0.44      
15 A" 35 34 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 10529.0 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 10502.7 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 BLYP/6-311G*
ABC
0.39809 0.34127 0.19048

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -1.345 0.000
N2 -0.013 0.179 0.000
H3 1.055 -1.650 0.000
H4 -0.497 -1.688 0.910
H5 -0.497 -1.688 -0.910
O6 0.001 0.740 -1.105
O7 0.001 0.740 1.105

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.52461.09641.09251.09252.36022.3602
N21.52462.11772.13282.13281.23931.2393
H31.09642.11771.79901.79902.83592.8359
H41.09252.13281.79901.82003.19432.4863
H51.09252.13281.79901.82002.48633.1943
O62.36021.23932.83593.19432.48632.2099
O72.36021.23932.83592.48633.19432.2099

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 116.906 C1 N2 O7 116.906
N2 C1 H3 106.650 N2 C1 H4 108.021
N2 C1 H5 108.021 H3 C1 H4 110.547
H3 C1 H5 110.547 H4 C1 H5 112.798
O6 N2 O7 126.154
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.471      
2 N 0.227      
3 H 0.248      
4 H 0.235      
5 H 0.235      
6 O -0.237      
7 O -0.237      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.054 -3.333 0.000 3.334
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.601 -0.114 0.000
y -0.114 -22.274 0.000
z 0.000 0.000 -26.397
Traceless
 xyz
x 2.734 -0.114 0.000
y -0.114 1.725 0.000
z 0.000 0.000 -4.460
Polar
3z2-r2-8.919
x2-y20.673
xy-0.114
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.625 -0.019 0.000
y -0.019 4.273 0.000
z 0.000 0.000 5.059


<r2> (average value of r2) Å2
<r2> 65.698
(<r2>)1/2 8.105