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

using model chemistry: MP2/CEP-121G*

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 MP2/CEP-121G*
 hartrees
Energy at 0K-48.876773
Energy at 298.15K 
HF Energy-48.183413
Nuclear repulsion energy68.989434
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 MP2/CEP-121G*
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' 3234 3081 3.26      
2 A' 3114 2967 2.88      
3 A' 1510 1438 11.54      
4 A' 1452 1384 1.46      
5 A' 1410 1344 47.42      
6 A' 1158 1103 0.07      
7 A' 924 880 3.20      
8 A' 655 624 26.84      
9 A' 584 557 3.02      
10 A" 3261 3107 0.60      
11 A" 1772 1688 106.58      
12 A" 1508 1437 20.11      
13 A" 1141 1087 3.66      
14 A" 473 451 0.67      
15 A" 50 48 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 11122.8 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 10597.8 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 MP2/CEP-121G*
ABC
0.39241 0.34468 0.19018

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 -1.336 0.000
N2 -0.014 0.164 0.000
H3 1.051 -1.640 0.000
H4 -0.497 -1.670 0.908
H5 -0.497 -1.670 -0.908
O6 0.002 0.741 -1.114
O7 0.002 0.741 1.114

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.50001.09171.08841.08842.35692.3569
N21.50002.09452.10242.10241.25461.2546
H31.09172.09451.79451.79452.82982.8298
H41.08842.10241.79451.81553.18582.4708
H51.08842.10241.79451.81552.47083.1858
O62.35691.25462.82983.18582.47082.2276
O72.35691.25462.82982.47083.18582.2276

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 117.383 C1 N2 O7 117.383
N2 C1 H3 106.775 N2 C1 H4 107.565
N2 C1 H5 107.565 H3 C1 H4 110.803
H3 C1 H5 110.803 H4 C1 H5 113.025
O6 N2 O7 125.187
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability