Salicylaldehyde, ionization

Hydrazine may be derivatized with salicylaldehyde to a hydrazone derivative, separated on a suitable HPLC column and determined by a UV detector. Aqueous samples may be directly injected into a polar GC column interfaced to an FID. Anhydrous hydrazine may be appropriately diluted in alcohol or ether and determined by GC/MS. The molecular ion for GC/MS determination by electron-impact ionization is 32. 

The third class of ligands includes the Schiff bases derived, in general, from salicylaldehyde or its derivatives. In many of these complexes the phenolic group is not ionized which leads to complexes that are less stable and more difficult to characterize than for the d-transition elements. 

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