Synthesis and studies of complex compounds of carboxyl-derivatives of methylphloroglucinol with metals

• DOI: 10.24297/jac.v10i1.5589
• Publication Date: 2018-05-07T10:56:39Z
• Authors: Olga Kovalchukova; Yahya Absalan; Sergey Bobylev; Dmitry Kuznetsov; Konstantin Kobrakov
• Keywords: Phloroglucinol; Benzoic acid; Coordination complex

Ten new complexes of 2,4,6–trihydroxy-3-methyl benzoic acid (methylphloroglucinol, L1) and 2,4,6–trihydroxy (phloroglucinol, L2) are isolated in the solid state, their formulae were detected.The spectroscopic methods indicate that coordination L1 L2 to metallic ions occurs through one O-atom deprotonated carboxylic group an O atom non-deprotonated neighboring hydroxy-group (bidentate chelating coordination). The schemes structure proposed.The complex formation solution is studied, constants calculated. It shown for metal 1st transitional series, arranged as Mn(II) < Co(II) Ni(II) Cu(II) > Zn(II). obtained results correlate with Irving-Williams Series.