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Bis p-Diketones Ligands

Maverick. A.W. and Klavetter, F.E. (1984) Cofadal binuclear copper complexes of a bis(P-diketone) ligand. Inorg. Chem., 23, 4129 130. [Pg.295]

Molecular structures of some representative bis(P-diketones) ligands are shown in Figure 2.8. [Pg.44]

Bis(P-diketones) ligands, were proved to be efficient motifs or structural elements for selfassembling highly luminescent metallo-supramolecular lanthanide complexes [53-59] and representative examples (H2L" ) are shown in Figure 2.8. Special attention has also been paid to the use of enantiomerically pure bis-P-diketones ofH2L " [58]. H2L ° in Figure 2.8 was shown to have the ability to form d-f-d molecular magnetic materials [60]. [Pg.44]

Shiga, T., Ohba, M., and Okawa, H. (2004) A series of trinuclear Cu Ln Cu complexes derived from 2,6-di(acetoacetyl)pyridine synthesis, structure, and magnetism. Inorganic Chemistry, 43, 4435 446. Albrecht, M., Schmid, S., Dehn, S., et al. (2007) Diastereoselective formation of luminescent dinuclear lan-thanide(III) helicates with enantiomerically pure tartaric acid derived bis(P-diketonate) ligands. New Journal of Chemistry, 31, 1755-1762. [Pg.88]

Recent work by Cole-Hamilton and coworkers has demonstrated that stability and volatility are enhanced by the use of long-chain fluorinated p-diketonate ligands, that is those derived from Hdfhd (6) and Htdfhd (7). The hydrafed bis(/3-diketonate) complexes M(dfhd)2(H20) and M(tdftid)2(H20) were prepared for Cu, Ca, Sr, and Ba and were all found to sublime below 200 °C with weight loss ranging from 85 to 98% (see Table 15). In addition, the anhydrous compound Ba(tdfiid)2 was reported to melt at 196 °C and volatilize at 220 °C with essentially no decomposition (residual mass by TGA ca. 1%). [Pg.107]

Bis- -diketones have been demonstrated to be powerful ligands in the engineering of supramolecular architectures. Pikramenou and coworkers [53a] used two bis-P-diketones of l,3-bis(3-phenyl-3-oxopropanoyl)benzene (H2L ) and l,3-bis(3-phenyl-3-oxopropanoyl) 5-ethoxy-benzene (H2L ) to synthesize neutral homodimetallic complexes [Ln2(L )3] (Ln = Eu, Nd, Sm, Y, Gd) and [Ln2(L )3] (Ln = Eu, Nd) and also an anionic dinuclear lanthanide complex [Eu2(L )4] . The detailed studies by NMR, electrospray, and MALDI (matrix assisted laser desorption ionization) mass spectrometry, by addition of chiral Pirkle s reagent, revealed that [Ln2(L" )3] and [Eu2(L )4] (see Eigure 2.38) are chiral, and have triple- and quadruple-stranded supramolecular structures, respectively, with the latter being more strongly emissive than the former. [Pg.71]

Xiao, L.X., Luo, Y.M., Chen, Z., et al. (2008) Investigations into the synthesis and fluorescence properties of Tb(III) complexes of a novel bis-P-diketone-type ligand and a novel bispyrazole ligand. Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, 71, 321-325. [Pg.88]

Titanium chelates are formed from tetraalkyl titanates or haUdes and bi- or polydentate ligands. One of the functional groups is usually alcohoHc or enoHc hydroxyl, which interchanges with an alkoxy group, RO, on titanium to Hberate ROH. If the second function is hydroxyl or carboxyl, it may react similarly. Diols and polyols, a-hydroxycarboxyflc acids and oxaUc acid are all examples of this type. P-Keto esters, P-diketones, and alkanolamines are also excellent chelating ligands for titanium. [Pg.144]

Precisely the last condition explains the fact that mainly ICC have been obtained by the immediate interaction of ligands and zero-valent metals. Thus, a large series of metal p-diketonates was synthesized in the absence of a solvent [513,634-638], for example, iron bis- and tra-acetylacetonates [635]. It was shown that other ligands can serve as activators or promoters in these processes. In particular, the introduction of a,a or y,y -bipy into the reaction mixture gives the possibility of isolating copper acetylacetonates and adducts of similar complexes of cobalt and nickel [636], meanwhile the p-diketonates of the metals above are not formed under conditions similar to those reported in Ref. 635. Under dissolution of more active metallic barium in the mixture of another p-dikctone - dipivaloyl-methane (DPM) - with dyglime (DG) or tetraglime (TG) in absolute pentane, the mononuclear complex [Ba(DPM)2(TG)] and binuclear complex [Ba2(DPM)4 ( t-H20)(DG)] were isolated and structurally characterized [637]. [Pg.271]

By using a polyfluorinated alkyl group containing P-diketone HL as the ligands, and chelate phosphine oxide ligands of 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene oxide (DDXPO) and bis(2-(diphenylphosphino)phenyl) ether oxide (DPEPO) as co-ligands. [Pg.58]

Bassett, A.P, Magennis, S.W., Glover, P.B., etal. (2004) Highly luminescent, triple- and quadruple-stranded, dinuclear Eu, Nd, and Sm(III) lanthanide complexes based on bis-diketonate ligands. Journal of the American Chemical Society, 126, 9413. [Pg.520]


See other pages where Bis p-Diketones Ligands is mentioned: [Pg.196]    [Pg.196]    [Pg.550]    [Pg.62]    [Pg.88]    [Pg.477]    [Pg.55]    [Pg.71]    [Pg.184]    [Pg.224]    [Pg.262]    [Pg.90]    [Pg.158]    [Pg.27]    [Pg.407]    [Pg.390]    [Pg.224]    [Pg.347]    [Pg.58]    [Pg.75]    [Pg.88]    [Pg.476]    [Pg.501]    [Pg.53]    [Pg.224]    [Pg.11]    [Pg.422]    [Pg.1036]    [Pg.10]    [Pg.313]    [Pg.139]    [Pg.286]    [Pg.437]    [Pg.94]    [Pg.50]    [Pg.24]    [Pg.284]    [Pg.161]   


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Bis ligands

Diketonates ligands

Diketone P-diketones

Diketones, ligands

Ligand P

P-Diketones

P-diketonate

P-diketonates

P-diketone

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