Heptane-2,4,6-trione metal complexes

Heptane-4,6-dione, decafluoro-metal complexes decomposition, 385 Heptane-2,4,6-trione metal complexes, 399 Heteroallenes coordinated reactivity, 579 metal complexes, 579 Heterocyclic nitrogen compounds basic pKa... 

The 1,3,5-triketones are potentially dinegative, tridentate ligands and the well-developed JT-system of the dianion gives to the ligands a preference for a planar configuration, thus precluding tridentate coordination to one metal ion. For example, copper(ll) and heptane-2,4,6-trione give mononuclear (132) and dinuclear complexes (133) ". ... 

Magnetic exchange interactions have also been identified in the oxovanadium-(iv) complexes with the Schiff bases derived from 2-hydroxy-l-naphthaldehyde and ethanolamine or propanolamine. Such complexes can accommodate two further donor atoms per metal and [VO(A)(L)] (A = bipy or phen HjL = Schiff base from salicylaldehyde or 2-hydroxy-l-naphthaldehyde with glycine, alanine, anthranilic acid, or o-aminophenol) complexes have been shown to involve six-co-ordinate vanadium. Similarly, VOL,B [HjL = 2-hydroxy-naphthylideneamino-acid, B = HjO, phen, or (py)2 HjL = 2-hydroxy-naphthylidene-o-aminophenol, B = phen] have normal magnetic moments ifi = 1.70—1.74 BM) at room temperature. The complex VOL (HjL = 6,ll-dimethyl-7,10-diazahexadeca-6,10-diene-2,4,13,15-tetrone) has been prepared from V0(0H)2, heptane-2,4,6-trione, and en in MeOH. The structure... 

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