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

using model chemistry: CCD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCD/6-311G*
 hartrees
Energy at 0K-132.359715
Energy at 298.15K-132.362119
HF Energy-131.922199
Nuclear repulsion energy59.901928
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 CCD/6-311G*
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 3079 2941 17.43      
2 A1 2275 2172 125.85      
3 A1 1493 1426 3.03      
4 A1 986 942 20.64      
5 E 3169 3026 7.33      
5 E 3169 3026 7.33      
6 E 1524 1456 11.52      
6 E 1524 1456 11.52      
7 E 1169 1117 0.14      
7 E 1169 1117 0.14      
8 E 278 266 0.65      
8 E 278 266 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 10056.4 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 9604.9 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 CCD/6-311G*
ABC
5.25487 0.33410 0.33410

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-311G*

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 0.314
C3 0.000 0.000 1.485
H4 0.000 1.030 -1.477
H5 0.892 -0.515 -1.477
H6 -0.892 -0.515 -1.477

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42722.59871.09231.09231.0923
N21.42721.17152.06572.06572.0657
C32.59871.17153.13613.13613.1361
H41.09232.06573.13611.78411.7841
H51.09232.06573.13611.78411.7841
H61.09232.06573.13611.78411.7841

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 109.434
N2 C1 H5 109.434 N2 C1 H6 109.434
H4 C1 H5 109.509 H4 C1 H6 109.509
H5 C1 H6 109.509
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability