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

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-244.629311
Energy at 298.15K-244.634063
HF Energy-243.766486
Nuclear repulsion energy124.912605
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/Def2TZVPP
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' 3231 3074 1.22      
2 A' 3125 2974 1.36      
3 A' 1499 1426 11.25      
4 A' 1432 1363 2.60      
5 A' 1418 1349 57.43      
6 A' 1151 1095 0.21      
7 A' 947 901 6.16      
8 A' 676 643 24.14      
9 A' 607 577 3.24      
10 A" 3258 3100 0.00      
11 A" 1762 1676 148.57      
12 A" 1488 1416 22.34      
13 A" 1125 1071 3.34      
14 A" 481 457 0.65      
15 A" 35 34 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 11116.4 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 10577.2 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/Def2TZVPP
ABC
0.40745 0.35504 0.19675

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.022 -1.309 0.000
N2 -0.096 0.177 0.000
H3 1.082 -1.546 0.000
H4 -0.445 -1.683 0.901
H5 -0.445 -1.683 -0.901
O6 0.022 0.720 -1.085
O7 0.022 0.720 1.085

Atom - Atom Distances (Å)
  C1 N2 H3 H4 H5 O6 O7
C11.49101.08561.08201.08202.30082.3008
N21.49102.08712.09622.09621.21861.2186
H31.08562.08711.77841.77842.72622.7262
H41.08202.09621.77841.80283.15222.4548
H51.08202.09621.77841.80282.45483.1522
O62.30081.21862.72623.15222.45482.1693
O72.30081.21862.72622.45483.15222.1693

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 115.868 C1 N2 O7 115.868
N2 C1 H3 107.143 N2 C1 H4 108.064
N2 C1 H5 108.064 H3 C1 H4 110.259
H3 C1 H5 110.259 H4 C1 H5 112.841
O6 N2 O7 125.755
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability