a period of forty minutes the reaction mixture was mixed for an additional 2 hours the mixture was heated to room temperature and boiled for 1 5 hours the reaction mixture was then filtered under a nitrogen atmosphere after which 5 ml of ethanol was added for destruction of excess nabh 4 in addition approximately one half of the solvent was also removed to precipitate the iron nanocomposite that is the nanoparticle iron crown compound complex the solution was cooled to 5 u00b0 c to precipitate 3 48 g 73 of the particulate iron crown composite v having a black color the composition of this compound v was confirmed with element analysis found c 59 72 h 6 52 n 6 05 fe 12 56 c 132 h 168 o 24 n 12 fe 6 the mass spectrum of the resulting product showed no lines of ordinary iron monomer but did show line 335 04 confirming the presence of fe 6 in the composition of cw fe 6 0 v the prepared composition is pyrophorous and has high chemical activity it has been shown that fe 6 nanoparticle complexed with cw is amorphous and there is no usual iron line in its x ray spectrum the presence of electroneutral nano iron particles fe 0 6 in the nanocomposite cwfe 0 6 has been determined by a known method see a ch mirzadjanzade a l shabanov and et al u201c studying the influence of nanoparticles of iron to the process of increasing of intensity of gas elimination and layer pressure with the purpose application in oil recovery news of baku university 2005 1 p 5 13 according to this method electroneutral fe 0 6 in composite is converted to a stable nano homopolyatomic anion of fe u2212 6 by.