The Synthesis and Structure of Trimetaphosphimato Complexes of Hafnium and Zirconium

✍ Scribed by Norbert Stock; Wolfgang Herrendorf; Johannes Beck; Wolfgang Schnick

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 673 KB
• Volume: 1998
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/(sici)1099-0682(199804)1998:4<469::aid-ejic469>3.0.co;2-q

✦ Synopsis

The

(trimetaphosphimato)hafnates and -zirconates Na 4 {Hf 4 (µ 4 -O)(µ-OH) 6 [(PO 2 NH) ), c = 50.284(10) A ˚, Z = 6] were obtained by the stoichiometric reaction of HfOCl 2 • 8 H 2 O and ZrOCl 2 • 8 H 2 O with an aqueous solution of Na 3 (PO 2 NH) 3 • 4 H 2 O, followed by the diffusion-controlled addition of methanol. During these reactions compounds 1 and 2, or 3 and 4, crystallized simultaneously and the hafnium and zirconium complexes 1 and 3, as well as 2 and 4, were found to be isostructural and isomorphous. The characteristic structural feature which is central to 1, 2, 3, and 4 is the complex tetranuclear anion