An alkylidene is any of a class of divalent functional groups derived from an alkane by removal of two hydrogen atoms from the same carbon atom.
Louise F. Walker has written: 'Synthetic applications of alkylidene carbenes'
H. C. L. Abbenhuis has written: 'Intramolecularly coordinating ligands in tantalum alkylidene chemistry ..'
An azinic acid is any organic derivative of H2N+O-OH, especially the alkylidene derivatives R2C=N+O-OH.
Devinder Kaur Anand has written: 'Studies on geometrical isomers of 2-alkylidene- and 2-benzylidene 5-methylcyclohexanones'