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

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-244.063069
Energy at 298.15K 
HF Energy-243.569333
Nuclear repulsion energy119.336000
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/SDD
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' 3206 3095 8.10      
2 A' 3076 2970 7.37      
3 A' 1519 1466 16.92      
4 A' 1467 1416 1.36      
5 A' 1311 1265 22.39      
6 A' 1171 1130 0.04      
7 A' 862 832 2.56      
8 A' 617 596 30.37      
9 A' 548 529 1.58      
10 A" 3227 3115 1.60      
11 A" 1803 1740 5.56      
12 A" 1523 1470 17.60      
13 A" 1158 1117 0.48      
14 A" 453 437 0.47      
15 A" 13 12 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 10976.8 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 10595.9 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/SDD
ABC
0.36735 0.32841 0.17945

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 -1.368 0.000
N2 -0.012 0.155 0.000
H3 1.053 -1.690 0.000
H4 -0.509 -1.700 0.911
H5 -0.509 -1.700 -0.911
O6 0.002 0.763 -1.154
O7 0.002 0.763 1.154

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.52281.09871.09641.09642.42282.4228
N21.52282.13042.12572.12571.30401.3040
H31.09872.13041.80801.80802.90702.9070
H41.09642.12571.80801.82233.25442.5272
H51.09642.12571.80801.82232.52723.2544
O62.42281.30402.90703.25442.52722.3073
O72.42281.30402.90702.52723.25442.3073

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 117.771 C1 N2 O7 117.771
N2 C1 H3 107.608 N2 C1 H4 107.384
N2 C1 H5 107.384 H3 C1 H4 110.901
H3 C1 H5 110.901 H4 C1 H5 112.416
O6 N2 O7 124.422
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability