title: Synthesis and characterization of dendrimeric melamine cored [salen/salophFe(III)] and [salen/salophCr(III)] capped complexes and their magnetic behaviors.
abstract: 2,4,6-Tris(4-hydroxybenzimino)-1,3,5-triazine [1] 2 has been synthesized from the reaction of 1 equiv. melamine (2,4,6-triamino-1,3,5-triazine) and 3 equiv. 4-hydroxybenzaldehyde. Then, 2,4,6-tris(4-(4,6-dichloro-1,3,5-triazine-2-yloxy)benzimino)-1,3,5-triazine 3 has been synthesized from the reaction of 1 equiv. 2 and 3 equiv. cyanuric chloride. And then, two new triazine centered dendrimeric ligands 2,4,6-tris(4-(4,6-bis(4-carboxyphenyloxy)-1,3,5-triazine-2-yloxy)benzimino)-1,3,5-triazine 4 and 2,4,6-tris(4-(4,6-bis(3,5-dicarboxyphenyloxy)-1,3,5-triazine-2-yloxy)benzimino)-1,3,5-triazine 5 have been synthesized from the reaction of 1 equiv. 3 and 6 equiv 4-hydroxybenzoic acid or 5-hydroxyisophtalic acid. Finally, eight new multinuclear Fe(III) and Cr(III) complexes involving tetradenta Schiff bases N,N'-bis(salicylidene)ethylenediamine-(salenH(2)) or bis(salicylidene)-o-phenylene diamine-(salophH(2)) with 4 or 5 have been synthesized and characterized by means of elemental analysis, (1)H NMR, FT-IR spectroscopy, thermal analyses and magnetic susceptibility measurements. The complexes can also be characterized as low-spin distorted octahedral Fe(III) and Cr(III) bridged by carboxylic acids.
authors.affiliation: Department of Chemistry, Faculty of Science, Selcuk University, Campus of Alaaddin Keykubat, 42075 Selcuklu, Konya, Turkey. uysal77@hotmail.com
authors.forename: Saban
authors.initials: S
authors.lastname: Uysal
authors.forename: Ziya Erdem
authors.initials: ZE
authors.lastname: Koç
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry; D002621:Chemistry / Q000379:methods; D002626:Chemistry, Pharmaceutical / Q000379:methods; D002857:Chromium / Q000737:chemistry*; D015195:Drug Design; D005029:Ethylenediamines / Q000138:chemical synthesis* / Q000737:chemistry; D006358:Hot Temperature; D007501:Iron / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008280:Magnetics; D015394:Molecular Structure; D011108:Polymers / Q000737:chemistry; D012545:Schiff Bases / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D014227:Triazines / Q000737:chemistry*
chemical_list: D002264:Carboxylic Acids; D005029:Ethylenediamines; D011108:Polymers; D012545:Schiff Bases; D014227:Triazines; D002857:Chromium; C011452:disalicylaldehyde ethylenediamine; D007501:Iron; C011907:melamine