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

using model chemistry: PBEPBE/3-21G*

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 PBEPBE/3-21G*
 hartrees
Energy at 0K-243.378787
Energy at 298.15K 
HF Energy-243.378787
Nuclear repulsion energy120.095926
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 PBEPBE/3-21G*
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' 3125 2980 2.10      
2 A' 3028 2887 0.18      
3 A' 1488 1419 15.90      
4 A' 1361 1298 2.82      
5 A' 1156 1103 97.96      
6 A' 1081 1031 1.61      
7 A' 802 764 9.18      
8 A' 578 551 11.91      
9 A' 519 495 2.86      
10 A" 3160 3013 0.50      
11 A" 1489 1420 1.52      
12 A" 1348 1285 101.72      
13 A" 1034 986 9.94      
14 A" 412 393 0.18      
15 A" 27 26 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 10303.5 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 9824.4 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 PBEPBE/3-21G*
ABC
0.36518 0.33849 0.18190

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 -1.352 0.000
N2 -0.016 0.173 0.000
H3 1.059 -1.659 0.000
H4 -0.503 -1.680 0.915
H5 -0.503 -1.680 -0.915
O6 0.003 0.745 -1.157
O7 0.003 0.745 1.157

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.52471.10061.09591.09592.39482.3948
N21.52472.12412.12342.12341.29091.2909
H31.10062.12411.81091.81092.86972.8697
H41.09592.12341.81091.83003.22962.4891
H51.09592.12341.81091.83002.48913.2296
O62.39481.29092.86973.22962.48912.3142
O72.39481.29092.86972.48913.22962.3142

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 116.293 C1 N2 O7 116.293
N2 C1 H3 106.900 N2 C1 H4 107.108
N2 C1 H5 107.108 H3 C1 H4 111.069
H3 C1 H5 111.069 H4 C1 H5 113.221
O6 N2 O7 127.361
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.445      
2 N 0.206      
3 H 0.267      
4 H 0.254      
5 H 0.254      
6 O -0.269      
7 O -0.269      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.078 -3.267 0.000 3.268
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.341 -0.178 0.000
y -0.178 -21.683 0.000
z 0.000 0.000 -25.750
Traceless
 xyz
x 2.376 -0.178 0.000
y -0.178 1.863 0.000
z 0.000 0.000 -4.238
Polar
3z2-r2-8.476
x2-y20.342
xy-0.178
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.092 -0.009 0.000
y -0.009 3.585 0.000
z 0.000 0.000 4.577


<r2> (average value of r2) Å2
<r2> 67.495
(<r2>)1/2 8.216