Bimetallic alkoxides of niobium

The Chemistry and Spectroscopy of Nonaisopropoxodistannate and Tetradecaisopropoxotristannate Complexes of Yttrium(III) and Lanthanides(III)

“…E-mail : anirudhsinghunivjpr@yahoo.co.in In a search for suitable heterobimetallic precursors containing two replaceable chloride groups, the equimolar reactions of NaSn 2 (OPr') 9 with LnCl 3 .3Pr'OH have been carried out to obtain the complexes of the type Ln {Sn 2 (OPr') 9 } Cl 2 . These complexes have been used for the synthesis of novel hetero (tri-and tetra-) metallic complexes, which could be used for the preparation of mixed-metal oxides containing tin 16,11. In this paper, synthesis and spectroscopic properties of metal complexes of the Sn 2 (0Pr') 9~ ligand have been reported..…”

Synthesis, characterization, and acceptor behavior of dichlorotris(2-t-butylphenoxo)niobium(V)

“…Although the literature contains voluminous reports on phenoxides of main group elements, transition metals, lanthanides, and actinides, more recent interest has centered on the early and late d-block metal chemistry supported by sterically bulky aryloxide ligation [5][6][7]. Niobium complexes, in particular, derived from alcohols and substituted phenols [8,9] present striking structural features and a wide range of applications in material science [10][11][12][13][14][15]. The niobium(V) catalysts bearing di-and tri-phenolic ligands polymerize ethylene, in the presence of an organoaluminum cocatalyst [16].…”

Synthesis of the first examples of stable heterometallic isopropoxides of an organometallic RSn(IV) moiety

“…Chelating alkoxometallate ligands, like AlðOPr i Þ À 4 ; GaðOPr i Þ À 4 ; and NbðOPr i Þ À 6 for which bidentate ligating mode has been established by X-ray crystallographic studies [1][2][3][4][5][6][7], have been used extensively during the last two decades for the syntheses of novel classes of structurally interesting heterometallic derivatives (containing two, three, or four different species) of a large number of metals of the periodic table [8][9][10][11][12]. However, the investigations have been limited to non-organometallic moieties of transition or main group elements only.…”