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

using model chemistry: CID/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 CID/3-21G
 hartrees
Energy at 0K-242.679013
Energy at 298.15K 
HF Energy-242.254005
Nuclear repulsion energy122.080246
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 CID/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' 3266 3043 1.44      
2 A' 3175 2958 0.44      
3 A' 1594 1485 13.10      
4 A' 1496 1394 1.60      
5 A' 1309 1220 52.00      
6 A' 1194 1113 0.52      
7 A' 879 818 1.38      
8 A' 637 593 33.40      
9 A' 563 524 6.32      
10 A" 3299 3073 0.05      
11 A" 1605 1495 4.93      
12 A" 1524 1419 153.06      
13 A" 1141 1063 25.93      
14 A" 450 420 0.58      
15 A" 29 27 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 11080.0 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 10322.1 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 CID/3-21G
ABC
0.38209 0.34532 0.18791

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 -1.338 0.000
N2 -0.015 0.167 0.000
H3 1.045 -1.649 0.000
H4 -0.503 -1.658 0.903
H5 -0.503 -1.658 -0.903
O6 0.003 0.739 -1.130
O7 0.003 0.739 1.130

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.50501.08781.08351.08352.36402.3640
N21.50502.10282.09412.09411.26661.2666
H31.08782.10281.79211.79212.83992.8399
H41.08352.09411.79211.80643.18342.4598
H51.08352.09411.79211.80642.45983.1834
O62.36401.26662.83993.18342.45982.2604
O72.36401.26662.83992.45983.18342.2604

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 116.806 C1 N2 O7 116.806
N2 C1 H3 107.297 N2 C1 H4 106.868
N2 C1 H5 106.868 H3 C1 H4 111.254
H3 C1 H5 111.254 H4 C1 H5 112.939
O6 N2 O7 126.337
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability