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

using model chemistry: CCSD=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCSD=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-132.433569
Energy at 298.15K-132.436043
HF Energy-131.909062
Nuclear repulsion energy60.184000
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 CCSD=FULL/6-31G(2df,p)
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 3120 2938 14.07      
2 A1 2276 2143 125.71      
3 A1 1498 1411 5.32      
4 A1 989 931 15.35      
5 E 3207 3020 4.46      
5 E 3207 3020 4.46      
6 E 1539 1449 8.48      
6 E 1539 1449 8.48      
7 E 1186 1117 0.06      
7 E 1186 1117 0.06      
8 E 304 286 0.20      
8 E 304 286 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 10177.3 cm-1
Scaled (by 0.9416) Zero Point Vibrational Energy (zpe) 9582.9 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 CCSD=FULL/6-31G(2df,p)
ABC
5.31677 0.33742 0.33742

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.106
N2 0.000 0.000 0.312
C3 0.000 0.000 1.478
H4 0.000 1.025 -1.471
H5 0.887 -0.512 -1.471
H6 -0.887 -0.512 -1.471

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.41742.58401.08801.08801.0880
N21.41741.16662.05652.05652.0565
C32.58401.16663.12253.12253.1225
H41.08802.05653.12251.77491.7749
H51.08802.05653.12251.77491.7749
H61.08802.05653.12251.77491.7749

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 109.633
N2 C1 H5 109.633 N2 C1 H6 109.633
H4 C1 H5 109.309 H4 C1 H6 109.309
H5 C1 H6 109.309
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability