Synthesis and characterization of two novel tetranuclear sodium ketoiminate complexes; structural evidence for formation of dative Na ⋯ F and Na-C (olefin) bonding interactions

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Sudhir Ranjan
  • Po-Wen Chung
  • Chao-Shiuan Liu
  • Shie-Ming Peng
  • Gene-Hsiang Lee

Detail(s)

Original languageEnglish
Pages (from-to)343-347
Journal / PublicationJournal of the Chemical Society, Dalton Transactions
Issue number3
Online published14 Jan 2000
Publication statusPublished - 2000
Externally publishedYes

Abstract

Treatment of fluorinated β-ketoiminate ligands MokeimH or AlkeimH with NaH in THF solution afforded the corresponding ketoiminatosodium complexes [Na(Mokeim)]4 1 and [Na(Alkeim)]4 2, MokeimH = (CF3)C(=O)CH=C(CF3)NH(CH2CH2OMe) and AlkeimH = (CF3)C(=O)CH=C(CF3)NH(CH2CH=CH2). These new complexes were characterized by spectroscopic methods, elemental analyses and X-ray diffraction studies. Complex 1 consists of a tetrameric Na4O4 cubane core arrangement, of which each sodium atom is surrounded by a tridentate ketoiminato ligand, two oxygen atoms from nearby ketoiminato ligands, and one or two weak Na ⋯ F dative interactions. The core structure of 2 is similar, but with formation of the uncommon allyl to sodium π interaction. The stabilization of this Na-C (olefin) bonding interaction is as effective as the Na-O (ether) dative bonding in 1 because 2 shows comparable thermal stability and even an enhanced volatility during sublimation.

Citation Format(s)

Synthesis and characterization of two novel tetranuclear sodium ketoiminate complexes; structural evidence for formation of dative Na ⋯ F and Na-C (olefin) bonding interactions. / Chi, Yun; Ranjan, Sudhir; Chung, Po-Wen; Liu, Chao-Shiuan; Peng, Shie-Ming; Lee, Gene-Hsiang.

In: Journal of the Chemical Society, Dalton Transactions, No. 3, 2000, p. 343-347.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review