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

using model chemistry: MP4/3-21G

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 MP4/3-21G
 hartrees
Energy at 0K-242.781530
Energy at 298.15K 
HF Energy-242.242377
Nuclear repulsion energy118.571147
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 MP4/3-21G
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' 3173 3077        
2 A' 3080 2987        
3 A' 1555 1508        
4 A' 1431 1387        
5 A' 1175 1139        
6 A' 1134 1099        
7 A' 771 748        
8 A' 575 557        
9 A' 503 488        
10 A" 3199 3103        
11 A" 1569 1521        
12 A" 1501 1456        
13 A" 1098 1065        
14 A" 407 394        
15 A" 34i 32i        

Unscaled Zero Point Vibrational Energy (zpe) 10567.4 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 10248.3 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 MP4/3-21G
ABC
0.35277 0.33272 0.17712

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 -1.364 0.000
N2 -0.016 0.168 0.000
H3 1.052 -1.679 0.000
H4 -0.508 -1.683 0.910
H5 -0.508 -1.683 -0.910
O6 0.003 0.753 -1.179
O7 0.003 0.753 1.179

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.53201.09481.09141.09142.42382.4238
N21.53202.13352.12012.12011.31671.3167
H31.09482.13351.80591.80592.89982.8998
H41.09142.12011.80591.82003.24982.5039
H51.09142.12011.80591.82002.50393.2498
O62.42381.31672.89983.24982.50392.3583
O72.42381.31672.89982.50393.24982.3583

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 116.398 C1 N2 O7 116.398
N2 C1 H3 107.459 N2 C1 H4 106.624
N2 C1 H5 106.624 H3 C1 H4 111.386
H3 C1 H5 111.386 H4 C1 H5 112.972
O6 N2 O7 127.146
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability