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Synthesis and Characterization of Calcium Beta-Diketonate Complexes. X-ray Crystal and Molecular Structures Of: [{Ca(tmhd)2}2(18-crown-6)], [Ca(dpp)2(thf)2] and [Ca(dpp)2(triglyme)]

Synthesis and Characterization of Calcium Beta-Diketonate Complexes. X-ray Crystal and Molecular Structures Of: [{Ca(tmhd)2}2(18-crown-6)], [Ca(dpp)2(thf)2] and [Ca(dpp)2(triglyme)]

Naida El Habra, Franco Benetollo, Maurizio Casarin, Marco Bolzan, Andrea Sartori, Gilberto Rossetto

Dalton Trans. 2010 Sep 14;39(34):8064-70.

PMID: 20631940

Abstract:

Reactions of 2,2,6,6-tetramethyl-3,5-heptanedione (Htmhd), 1,1,1,5,5,5-hexafluoro-2,4-pentanedione (Hhfa) or 1,3-diphenyl-1,3-propanedione (Hdpp) with calcium methoxide in hexane or toluene afford the corresponding known oligomeric beta-diketonates: [Ca(3)(tmhd)(6)], [{Ca(hfa)(2)}(n)] and [{Ca(dpp)(2)}(n)]. The complexes react with tetrahydrofuran, 2,5,8,11-tetraoxadodecane (triglyme) or 1,4,7,10,13,16-hexaoxacyclooctadecane (18-crown-6) leading to the formation of the new mononuclear [Ca(dpp)(2)(thf)(2)], [Ca(dpp)(2)(triglyme)] and dinuclear [{Ca(dpp)(2)}(2)(18-crown-6)] and [{Ca(tmhd)(2)}(2)(18-crown-6)] adducts. The obtained complexes were characterized by elemental analyses, IR, (1)H and (13)C NMR spectroscopies; moreover, single crystal X-ray diffraction measurements were also carried out for: [{Ca(tmhd)(2)}(2)(18-crown-6)], [Ca(dpp)(2)(thf)(2)] and [Ca(dpp)(2)(triglyme)].

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1118714	2,2,6,6-Tetramethyl-3,5-heptanedione		1118-71-4	Price

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