title: Synthesis, structural studies and reactivity of vanadium complexes with tridentate (OSO) ligand.
abstract: The direct reaction between [VCl(3)(thf)3] or [VO(OEt)3] and 2,2'-thiobis{4-(1,1,3,3-tetramethyl-butyl)phenol (tbopH(2)) leads to the formation of [V(2)(micro-tbop-kappa(3)O,S,O)2Cl(2)(CH(3)CN)(2)] (1).4CH(3)CN or [V(2)(micro-OEt)2(O)2(tbop-kappa(3)O,S,O)2] (2), respectively, in high yield. Compounds 1 and 2 were characterized by chemical and physical techniques including X-ray crystallography and variable temperature magnetic susceptibility studies (J = -29.1 cm(-1)) for 1. Complexes 1 and 2 were supported on MgCl2 and when activated with aluminium alkyls, were found to effectively polymerize ethene to produce polyethylene with a narrow molecular weight distribution M(w)/M(n) approximately 3.
authors.affiliation: Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie Street, 50-383, Wrocław, Poland. zj@wchuwr.chem.uni.wroc.pl
authors.forename: Zofia
authors.initials: Z
authors.lastname: Janas
authors.forename: Dorota
authors.initials: D
authors.lastname: Wiśniewska
authors.forename: Lucjan B
authors.initials: LB
authors.lastname: Jerzykiewicz
authors.forename: Piotr
authors.initials: P
authors.lastname: Sobota
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Drabent
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Szczegot
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D002384:Catalysis; D018360:Crystallography, X-Ray; D008024:Ligands; D015636:Magnesium Chloride / Q000737:chemistry; D008970:Molecular Weight; D009591:Nitrogenase / Q000737:chemistry* / Q000378:metabolism; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000378:metabolism; D020959:Polyethylene / Q000737:chemistry; D013057:Spectrum Analysis; D013696:Temperature; D017968:Vanadium Compounds / Q000138:chemical synthesis* / Q000378:metabolism
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D017968:Vanadium Compounds; D015636:Magnesium Chloride; D020959:Polyethylene; D009591:Nitrogenase; D000537:Aluminum Oxide