Studies on poly(2-hydroxy-4-acryloyloxybenzophenone)-metal complexes

✍ Scribed by P. Kannan; T. Kaliyappan

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 483 KB
• Volume: 60
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19960516)60:7<947::aid-app4>3.0.co;2-m

✦ Synopsis

SYNOPSIS

2-Hydroxy-4-acryloyloxybenzophenone (HABP), prepared from acryloyl chloride with 2,4dihydroxybenzophenone, was polymerized in methyl ethyl ketone a t 70°C using benzoyl peroxide as initiator. Polychelates were obtained in the dimethylformamide solution of poly(HABP) containing a few drops of ammonia with the aqueous solution of Cu(II)/Ni(II) ions. The polymer and polychelates were characterized by elemental analyses and spectral studies. Elemental analyses of the polychelates suggest a metal to ligand ratio of 1 : 2. The IR spectral data of polychelates indicate that the metals were coordinated through the oxygen of the keto group and the oxygen of the phenolic-OH group. The diffuse reflectance spectra, electron paramagnetic resonance, and magnetic moments of the polychelates show an octahedral and square planar structure for poly( HABP)-Ni(I1) and poly(HABP)-Cu(I1) complexes, respectively. X-ray diffraction studies revealed a high crystalline nature of the polychelates. The thermal properties of polymer and metal complexes and their catalytic activity are discussed.