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

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-132.316343
Energy at 298.15K-132.318730
HF Energy-131.896000
Nuclear repulsion energy59.664034
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 MP2/6-31G**
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 3150 2950 16.23      
2 A1 2176 2038 69.71      
3 A1 1504 1409 6.28      
4 A1 981 919 19.21      
5 E 3256 3049 5.54      
5 E 3256 3049 5.54      
6 E 1550 1452 8.14      
6 E 1550 1452 8.14      
7 E 1179 1104 0.32      
7 E 1179 1104 0.32      
8 E 272 254 0.53      
8 E 272 254 0.53      

Unscaled Zero Point Vibrational Energy (zpe) 10161.5 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 9516.3 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 MP2/6-31G**
ABC
5.31253 0.33118 0.33118

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.116
N2 0.000 0.000 0.308
C3 0.000 0.000 1.497
H4 0.000 1.024 -1.479
H5 0.887 -0.512 -1.479
H6 -0.887 -0.512 -1.479

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42392.61341.08681.08681.0868
N21.42391.18952.05962.05962.0596
C32.61341.18953.14763.14763.1476
H41.08682.05963.14761.77441.7744
H51.08682.05963.14761.77441.7744
H61.08682.05963.14761.77441.7744

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 109.505
N2 C1 H5 109.505 N2 C1 H6 109.505
H4 C1 H5 109.438 H4 C1 H6 109.438
H5 C1 H6 109.438
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability