Produced N-methylformamide

R (triple bond) N (single bond) C

R is an alkyl group. Nitrogen is positively charged. Carbon is negatively charged.

Boric acid, propyl ester, Ethylene glycol diethyl ether, Isopentyl bromide, Abscisic acid, Butyl isocyanide, Chlorodifluoroacetic acid. And a LOT more

A. O. Caride has written:

'ESR of low spin Co(II) and Fe(I), with cyanide and isocyanide ligands' -- subject(s): Cobalt compounds, Cyanides, Electron paramagnetic resonance, Iron compounds, Isocyanides

nitrogen being more electronegative than carbon, the contribution of co-ordinate bond is neglected and carbon provides two electrons to nitrogen. so oxidation number of carbon in iso cyanide is +2