Oligonuclear Fe Complexes (Fe, Fe4, Fe6, Fe9) Derived from Tritopic Pyridine Bis-Hydrazone Ligands鈥擲tructural, Magnetic, and M枚ssbauer Studies

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• 作者：Muhammad U. Anwar ; Louise N. Dawe ; Stewart R. Parsons ; Santokh S. Tandon ; Laurence K. Thompson ; Subrata K. Dey ; Valeriu Mereacre ; William M. Reiff ; Scott D. Bunge
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：May 5, 2014
• 年：2014
• 卷：53
• 期：9
• 页码：4655-4668
• 全文大小：647K
• 年卷期：v.53,no.9(May 5, 2014)
• ISSN：1520-510X

文摘

Tri-topic pyridine bis-hydrazone ligands produce polynuclear complexes with Fe(II) and Fe(III) salts with varying nuclearity and metal ion oxidation states. Mononuclear, tetranuclear, hexanuclear, and nonanuclear examples are discussed using structural, magnetic and M枚ssbauer data. In one case, although X-ray data suggest a [3 脳 3] Fe₉ grid (space group P4₂/n), careful examination of the structure, in conjunction with magnetic and M枚ssbauer data, indicates an unusual situation where the corner and center sites are present at unit occupancy, whereas side site occupancy is 0.6.