Special features of the synthesis (constructing) of highly organized quasi-one-dimensional organoiron nanostructures were considered. For the first time magnetic properties of ferromagnetic nanostructures with a specified topology based on quasi-one-dimensional organometallic structures (of "pile" type) fixed on an inorganic matrix were studied. The presence of an uncompensated antiferromagnetism arisen on plotting organoiron groups on a silica surface was experimentally found, and the obtained data showed the study of quasi-one-dimensional organometallic nanostructures fixed on a support to be promising for the spin electronics engineering. © 2008 MAIK Nauka.