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All results from a given calculation for CH3NC (methyl isocyanide)

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-132.373003
Energy at 298.15K-132.375259
HF Energy-131.936808
Nuclear repulsion energy59.897163
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/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3115 2953 15.93      
2 A1 2173 2060 79.96      
3 A1 1487 1410 5.32      
4 A1 964 914 20.17      
5 E 3215 3047 4.29      
5 E 3215 3047 4.29      
6 E 1522 1442 10.41      
6 E 1522 1442 10.41      
7 E 1171 1110 0.58      
7 E 1171 1110 0.58      
8 E 223 211 0.37      
8 E 223 211 0.37      

Unscaled Zero Point Vibrational Energy (zpe) 10000.5 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 9479.5 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/TZVP
ABC
5.30093 0.33392 0.33392

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.113
N2 0.000 0.000 0.310
C3 0.000 0.000 1.488
H4 0.000 1.026 -1.474
H5 0.888 -0.513 -1.474
H6 -0.888 -0.513 -1.474

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42322.60141.08721.08721.0872
N21.42321.17822.05792.05792.0579
C32.60141.17823.13483.13483.1348
H41.08722.05793.13481.77641.7764
H51.08722.05793.13481.77641.7764
H61.08722.05793.13481.77641.7764

picture of methyl isocyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 180.000 N2 C1 H4 109.384
N2 C1 H5 109.384 N2 C1 H6 109.384
H4 C1 H5 109.558 H4 C1 H6 109.558
H5 C1 H6 109.558
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability