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

using model chemistry: MP2=FULL/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=FULL/6-31G*
 hartrees
Energy at 0K-132.305789
Energy at 298.15K-132.308187
HF Energy-131.891454
Nuclear repulsion energy59.662007
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=FULL/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 3129 2948 13.31      
2 A1 2184 2058 67.78      
3 A1 1511 1424 3.22      
4 A1 981 925 19.66      
5 E 3229 3043 4.26      
5 E 3229 3043 4.26      
6 E 1552 1463 9.77      
6 E 1552 1463 9.77      
7 E 1183 1115 0.08      
7 E 1183 1115 0.08      
8 E 278 262 0.54      
8 E 278 262 0.54      

Unscaled Zero Point Vibrational Energy (zpe) 10145.5 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 9559.1 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=FULL/6-31G*
ABC
5.26934 0.33158 0.33158

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.114
N2 0.000 0.000 0.309
C3 0.000 0.000 1.493
H4 0.000 1.029 -1.477
H5 0.891 -0.514 -1.477
H6 -0.891 -0.514 -1.477

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42242.60651.09081.09081.0908
N21.42241.18412.06072.06072.0607
C32.60651.18413.14293.14293.1429
H41.09082.06073.14291.78151.7815
H51.09082.06073.14291.78151.7815
H61.09082.06073.14291.78151.7815

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 109.453
N2 C1 H5 109.453 N2 C1 H6 109.453
H4 C1 H5 109.489 H4 C1 H6 109.489
H5 C1 H6 109.489
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability