19648-86-3Relevant articles and documents
Molecular Engineering of MnII Diamine Diketonate Precursors for the Vapor Deposition of Manganese Oxide Nanostructures
Maccato, Chiara,Bigiani, Lorenzo,Carraro, Giorgio,Gasparotto, Alberto,Seraglia, Roberta,Kim, Jiyeon,Devi, Anjana,Tabacchi, Gloria,Fois, Ettore,Pace, Giuseppe,Di Noto, Vito,Barreca, Davide
, p. 17954 - 17963 (2017)
Molecular engineering of manganese(II) diamine diketonate precursors is a key issue for their use in the vapor deposition of manganese oxide materials. Herein, two closely related β-diketonate diamine MnII adducts with different fluorine contents in the diketonate ligands are examined. The target compounds were synthesized by a simple procedure and, for the first time, thoroughly characterized by a joint experimental–theoretical approach, to understand the influence of the ligand on their structures, electronic properties, thermal behavior, and reactivity. The target compounds are monomeric and exhibit a pseudo-octahedral coordination of the MnII centers, with differences in their structure and fragmentation processes related to the ligand nature. Both complexes can be readily vaporized without premature side decompositions, a favorable feature for their use as precursors for chemical vapor deposition (CVD) or atomic layer deposition applications. Preliminary CVD experiments at moderate growth temperatures enabled the fabrication of high-purity, single-phase Mn3O4 nanosystems with tailored morphology, which hold great promise for various technological applications.
(-)-2-(4'-pyridyl)-4,5-pinene-pyridine manganese hexafluoroacetylacetonate complex and preparation method
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Paragraph 0019; 0021, (2019/01/14)
The invention discloses a (-)-2-(4'-pyridyl)-4,5-pinene-pyridine manganese hexafluoroacetylacetonate complex and a preparation method. A molecular formula is Mn(hfac)2(L)2. The preparation method includes steps: dissolving hexafluoroacetylacetone into methyl alcohol, stirring for 15-20min, adding methyl alcohol while slowly stirring, dropwise adding aqueous solution of MnCl2 4H2O to generate precipitate immediately, filtering, and subjecting the precipitate to washing and vacuum drying to obtain Mn(hfac)2 2H2O; adding Mn(hfac)2 2H2O dissolved n-heptane solution into chiral single-toothed N-containing organic ligand L dissolved dichloromethane solution, continuously stirring for 10-20min, filtering, standing for volatilization to obtain faint yellow crystal after two days, and performing filtering, washing and vacuum drying to obtain the target complex. The mononuclear manganese complex is high in chiral optical activity.
