Metal alkoxides with polymerizable ligands: synthesis and molecular structure of [Nb4(μ-O)4(μ, η2-O2CMe-CH2)4(OPri)8]

Autor: Jacques Roziere, Valérie Abada, Liliane G. Hubert-Pfalzgraf, Sabine Halut
Rok vydání: 1997
Předmět:
Zdroj: Polyhedron. 16:581-585
ISSN: 0277-5387
DOI: 10.1016/0277-5387(96)00330-0
Popis: The reaction between [Nb(OPr i ) 5 ] 2 and methacrylic acid [CH 2 C(CH 3 )CO 2 H-McOH], and subsequent controlled microhydrolysis, gave [Nb 4 (μ-O) 4 (μ, η 2 -Mc) 4 (OPr i ) 8 ] which was characterized by X-ray diffraction. The compound is based on a planar Nb 4 O 4 core with terminal isopropoxide ligands, while the functional car☐ylates act as bridging chelating ligands. The Nb-O bond lengths vary from 1.840(3) to 2.203(4)A˚and follow the order Nb-OR ∼ Nb-O
Databáze: OpenAIRE