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

using model chemistry: CCD/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 CCD/6-31G**
 hartrees
Energy at 0K-132.336273
Energy at 298.15K-132.338675
HF Energy-131.897559
Nuclear repulsion energy59.846482
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3140 2944 20.18      
2 A1 2291 2148 119.29      
3 A1 1513 1419 8.41      
4 A1 993 931 20.42      
5 E 3234 3032 9.24      
5 E 3234 3032 9.24      
6 E 1552 1455 7.09      
6 E 1552 1455 7.09      
7 E 1183 1109 0.72      
7 E 1183 1109 0.72      
8 E 276 259 1.04      
8 E 276 259 1.04      

Unscaled Zero Point Vibrational Energy (zpe) 10213.7 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 9576.4 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/6-31G**
ABC
5.30981 0.33308 0.33308

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/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 0.312
C3 0.000 0.000 1.490
H4 0.000 1.025 -1.478
H5 0.887 -0.512 -1.478
H6 -0.887 -0.512 -1.478

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.42612.60391.08751.08751.0875
N21.42611.17772.06272.06272.0627
C32.60391.17773.13983.13983.1398
H41.08752.06273.13981.77491.7749
H51.08752.06273.13981.77491.7749
H61.08752.06273.13981.77491.7749

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 109.559
N2 C1 H5 109.559 N2 C1 H6 109.559
H4 C1 H5 109.383 H4 C1 H6 109.383
H5 C1 H6 109.383
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability