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

using model chemistry: MP2/3-21G*

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 MP2/3-21G*
 hartrees
Energy at 0K-242.749628
Energy at 298.15K 
HF Energy-242.246721
Nuclear repulsion energy119.630878
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 MP2/3-21G*
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' 3234 3077 3.05      
2 A' 3137 2984 2.05      
3 A' 1583 1506 10.64      
4 A' 1462 1391 1.81      
5 A' 1242 1181 30.67      
6 A' 1166 1110 0.52      
7 A' 830 789 3.13      
8 A' 603 574 26.43      
9 A' 525 499 2.60      
10 A" 3259 3100 0.29      
11 A" 1773 1687 5.46      
12 A" 1577 1500 10.72      
13 A" 1137 1082 0.18      
14 A" 424 403 0.43      
15 A" 28 26 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 10989.9 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 10454.7 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 MP2/3-21G*
ABC
0.36171 0.33648 0.18039

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.004 -1.355 0.000
N2 -0.016 0.164 0.000
H3 1.046 -1.674 0.000
H4 -0.507 -1.672 0.905
H5 -0.507 -1.672 -0.905
O6 0.004 0.750 -1.164
O7 0.004 0.750 1.164

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.51871.09021.08721.08722.40562.4056
N21.51872.12262.10532.10531.30351.3035
H31.09022.12261.79831.79832.88422.8842
H41.08722.10531.79831.81103.22692.4895
H51.08722.10531.79831.81102.48953.2269
O62.40561.30352.88423.22692.48952.3276
O72.40561.30352.88422.48953.22692.3276

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 116.736 C1 N2 O7 116.736
N2 C1 H3 107.761 N2 C1 H4 106.607
N2 C1 H5 106.607 H3 C1 H4 111.357
H3 C1 H5 111.357 H4 C1 H5 112.792
O6 N2 O7 126.465
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability