Title

Synthesis and metal-complexing ability of m-xylylenebis(β-diketones)

Document Type

Article

Publication Date

1-1-1989

Abstract

The preparation of the bis(β-diketone) XBAH2 (3,3′-[1,3-phenylenebis(methylene) bis(2,4-pentanedione)]) and five of its derivatives, and a study of their complexation reactions with Cu2+, is reported. Of these ligands (LH2), only sterically unhindered derivatives of acetylacetone readily yield binuclear copper(II) complexes, Cu2L2. The introduction of bulkier groups (Ph, t-Bu) into the 2,4-pentanedione portions of the ligands inhibits the complex-forming reaction, resulting in lower yields (XBBH2; see ligand abbreviations in Fig. 1), no reaction (XBPH2) or decomposition (XBDH2). The copper complex of Cl4XBAH2 appears to be polymeric; this is probably due to the steric effects of the bulky chlorine atom in the two-position. © 1989.

Publication Source (Journal or Book title)

Polyhedron

First Page

1549

Last Page

1556

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