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

using model chemistry: MP4=FULL/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=FULL/3-21G
 hartrees
Energy at 0K-242.788203
Energy at 298.15K 
HF Energy-242.242425
Nuclear repulsion energy118.585663
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=FULL/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 3106        
2 A' 3080 3015        
3 A' 1555 1522        
4 A' 1431 1401        
5 A' 1175 1150        
6 A' 1134 1110        
7 A' 771 755        
8 A' 575 563        
9 A' 503 493        
10 A" 3200 3132        
11 A" 1569 1535        
12 A" 1502 1470        
13 A" 1098 1075        
14 A" 407 398        
15 A" 33i 32i        

Unscaled Zero Point Vibrational Energy (zpe) 10569.7 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 10345.6 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=FULL/3-21G
ABC
0.35283 0.33285 0.17717

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/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
C11.53161.09461.09131.09132.42332.4233
N21.53162.13322.11982.11981.31671.3167
H31.09462.13321.80561.80562.89942.8994
H41.09132.11981.80561.81973.24952.5036
H51.09132.11981.80561.81972.50363.2495
O62.42331.31672.89943.24952.50362.3581
O72.42331.31672.89942.50363.24952.3581

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 116.399 C1 N2 O7 116.399
N2 C1 H3 107.469 N2 C1 H4 106.635
N2 C1 H5 106.635 H3 C1 H4 111.376
H3 C1 H5 111.376 H4 C1 H5 112.963
O6 N2 O7 127.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability