New Hexanuclear Niobium Cluster Compounds with Pyridine and N-Methylpyrrolidone Ligands: [Nb6Cl12(Pyr)(6)][AlCl4](2) and [Nb6Cl12(NMP)(6)][GaCl4](2)

作者：Flemming Anke; Koenig Jonas; Koeckerling Martin

来源：Zeitschrift fur Anorganische und Allgemeine Chemie, 2013, 639(14): 2527-2531.

DOI：10.1002/zaac.201300413

• Cluster
• Niobium
• Synthesis
• X-ray diffraction
• IR spectroscopy

The study is focused on the preparation, characterization, and structure elucidation of two new molecular cluster complexes of niobium, one with an aromatic N donor ligand, the other one with an O-carboxamide ligand: [Nb6Cl12(Pyr)(6)][AlCl4](2) (1) (Pyr = pyridine) and [Nb6Cl12(NMP)(6)][GaCl4](2) (2) (NMP = N-methyl-pyrrolidone). The synthesis of such substituted niobium cluster compounds, starting from easily accessible A(4)(I)[Nb6Cl18] (A(I) = alkali metal cation) materials is best done using a two-step protocol. First the solid state precursor is heated together with acetonitrile and in the second step the ligand exchange is performed. The molecular structures of 1 and 2 in the solid state were determined by single-crystal X-ray diffraction. The infrared spectrum of 1 was recorded as well.

• 出版日期2013-11