Laboratory “Metal organic compounds of transition metals”

Phone	(+994 50) 4308231
Fax	(+994 12) 5107442
E-mail	laboratory_24@kqki.science.az, chem@science.az
Chief	Iltifat Latifov Urshan oglu Doctor of chemical sciences, senior researcher
Total number of employees	7
Basic activity directions	Synthesis of new metal-organic compounds of transition metals with alkylcyclopentadienyl and similar ligands and obtaining of nano-composites on their basis.
Main scientific achievements	Synthesis of sandwich cyclopentadienyl, mono- and binuclear cyclopentadienylcarbonyl complexes of transition metals based on alkylcyclopentadienyl ligands and study of impact of electron configuration of metal atom, nature and number of alkyl groups in cyclopentadienyl ring, as well as carbonyl groups related with metal atom on structure and reactivity of these complexes. Methyl homologs of benzenecyclopentadienyl cations were synthesized by exchange reaction between sandwich dicyclopentadienyl complexes of iron and cobalt with benzene. It was shown that this method is more useful than Grignard method. Prepared complexes were characterized by IR- and 1Н NMR-spectroscopy. Monocarbonic acids of ferrocene and cobaltcene were produced by organo-lithium compounds and oxidation of methylmetalcene with potassium permanganate. Difference of dissociation constants of these acids and peculiarities of dissociation constant changes in each raw was interpreted by impact of additional positive charge of cobaltsinium on value of dissociation constants. General character of dissociation constant changes in both rows shows that methyl group is related with cyclopentadienyl ring not only with sigma-bond, but also by pi bond. Methyl homologs of cyclopentadienyl anion were studied by 13C NMR-spectroscopy and it was established that unlike hexamethylbenzene of methyl groups in pentamethylcyclopentadienyl ligand C-C bonds rotate freely.

Azerbaijan National Academy of Sciences

Laboratory “Metal organic compounds of transition metals”

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