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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-244.531866
Energy at 298.15K 
HF Energy-243.685083
Nuclear repulsion energy125.089524
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=FULL/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' 3265 3068 0.77      
2 A' 3152 2963 0.80      
3 A' 1512 1421 10.32      
4 A' 1449 1361 43.92      
5 A' 1439 1352 17.76      
6 A' 1164 1094 0.74      
7 A' 958 900 6.15      
8 A' 684 643 24.90      
9 A' 617 580 3.53      
10 A" 3289 3091 0.02      
11 A" 1815 1706 112.21      
12 A" 1504 1413 20.81      
13 A" 1141 1072 2.03      
14 A" 484 455 0.56      
15 A" 25i 23i 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 11223.0 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 10548.5 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=FULL/6-31G(2df,p)
ABC
0.40707 0.35773 0.19749

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.023 -1.303 0.000
N2 -0.100 0.178 0.000
H3 1.084 -1.540 0.000
H4 -0.445 -1.678 0.903
H5 -0.445 -1.678 -0.903
O6 0.023 0.717 -1.086
O7 0.023 0.717 1.086

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.48621.08691.08361.08362.29342.2934
N21.48622.08592.09272.09271.21861.2186
H31.08692.08591.78061.78062.71962.7196
H41.08362.09271.78061.80523.14792.4471
H51.08362.09271.78061.80522.44713.1479
O62.29341.21862.71963.14792.44712.1722
O72.29341.21862.71962.44713.14792.1722

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 115.614 C1 N2 O7 115.614
N2 C1 H3 107.299 N2 C1 H4 108.020
N2 C1 H5 108.020 H3 C1 H4 110.243
H3 C1 H5 110.243 H4 C1 H5 112.813
O6 N2 O7 126.073
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability