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

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-132.124569
Energy at 298.15K-132.126988
HF Energy-131.845806
Nuclear repulsion energy58.504798
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/LANL2DZ
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 3057 2944 25.58      
2 A1 2036 1961 69.25      
3 A1 1499 1444 0.56      
4 A1 903 870 25.67      
5 E 3172 3055 13.67      
5 E 3172 3055 13.67      
6 E 1539 1482 14.78      
6 E 1539 1482 14.78      
7 E 1180 1136 0.34      
7 E 1180 1136 0.34      
8 E 294 283 0.85      
8 E 294 283 0.85      

Unscaled Zero Point Vibrational Energy (zpe) 9932.6 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 9566.1 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 MP2/LANL2DZ
ABC
5.17363 0.31752 0.31752

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.143
N2 0.000 0.000 0.315
C3 0.000 0.000 1.529
H4 0.000 1.038 -1.506
H5 0.899 -0.519 -1.506
H6 -0.899 -0.519 -1.506

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.45712.67121.10001.10001.1000
N21.45711.21412.09592.09592.0959
C32.67121.21413.20753.20753.2075
H41.10002.09593.20751.79811.7981
H51.10002.09593.20751.79811.7981
H61.10002.09593.20751.79811.7981

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 109.303
N2 C1 H5 109.303 N2 C1 H6 109.303
H4 C1 H5 109.639 H4 C1 H6 109.639
H5 C1 H6 109.639
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability