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: PBEPBE/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-244.869732
Energy at 298.15K-244.874370
HF Energy-244.869732
Nuclear repulsion energy124.200959
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/Def2TZVPP
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' 3107 3069 2.00      
2 A' 3013 2977 0.53      
3 A' 1423 1406 11.83      
4 A' 1369 1352 48.71      
5 A' 1336 1320 67.89      
6 A' 1087 1074 1.07      
7 A' 894 883 20.27      
8 A' 640 632 10.76      
9 A' 594 587 3.46      
10 A" 3137 3099 0.39      
11 A" 1571 1552 268.80      
12 A" 1409 1392 40.42      
13 A" 1063 1050 7.75      
14 A" 464 459 0.67      
15 A" 19 19 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 10562.9 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 10435.0 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/Def2TZVPP
ABC
0.40501 0.34840 0.19425

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.017 -1.322 0.000
N2 -0.079 0.181 0.000
H3 1.083 -1.577 0.000
H4 -0.455 -1.700 0.909
H5 -0.455 -1.700 -0.909
O6 0.017 0.728 -1.088
O7 0.017 0.728 1.088

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.50691.09561.09171.09172.32052.3205
N21.50692.10772.12292.12291.22071.2207
H31.09562.10771.79091.79092.76202.7620
H41.09172.12291.79091.81773.17822.4794
H51.09172.12291.79091.81772.47943.1782
O62.32051.22072.76203.17822.47942.1750
O72.32051.22072.76202.47943.17822.1750

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 116.190 C1 N2 O7 116.190
N2 C1 H3 107.104 N2 C1 H4 108.504
N2 C1 H5 108.504 H3 C1 H4 109.922
H3 C1 H5 109.922 H4 C1 H5 112.708
O6 N2 O7 125.966
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.213      
2 N 0.332      
3 H 0.131      
4 H 0.133      
5 H 0.133      
6 O -0.258      
7 O -0.258      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.036 -3.373 0.000 3.373
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.683 -0.091 0.000
y -0.091 -22.321 0.000
z 0.000 0.000 -26.400
Traceless
 xyz
x 2.677 -0.091 0.000
y -0.091 1.720 0.000
z 0.000 0.000 -4.397
Polar
3z2-r2-8.795
x2-y20.638
xy-0.091
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.171 -0.039 0.000
y -0.039 4.878 0.000
z 0.000 0.000 5.519


<r2> (average value of r2) Å2
<r2> 64.786
(<r2>)1/2 8.049