METAL ALKOXIDES WITH POLYMERIZABLE LIGANDS - SYNTHESIS AND MOLECULAR-STRUCTURE OF [NB-4(MU-O)(4)(MU,ETA(2)-O(2)CME=CH2)(4)(OPRI)(8)]

Authors
HUBERTPFALZGRAF LG ABADA V HALUT S ROZIERE J
Citation
Lg. Hubertpfalzgraf et al., METAL ALKOXIDES WITH POLYMERIZABLE LIGANDS - SYNTHESIS AND MOLECULAR-STRUCTURE OF [NB-4(MU-O)(4)(MU,ETA(2)-O(2)CME=CH2)(4)(OPRI)(8)], Polyhedron, 16(4), 1997, pp. 581-585
Citations number
19
Categorie Soggetti
Chemistry Inorganic & Nuclear",Crystallography
Journal title
Polyhedron → ACNP
ISSN journal
02775387
Volume
16
Issue
4
Year of publication
1997
Pages
581 - 585
Database
ISI
SICI code
0277-5387(1997)16:4<581:MAWPL->2.0.ZU;2-0
Abstract
The reaction between [Nb(OPri)(5)](2) and methacrylic acid [CH2C(CH3)C O2H=McOH], and subsequent controlled microhydrolysis, gave [Nb-4(mu-O) (4)(mu,eta(2)-Mc)(4)(OPri)(3)] which was characterized by X-ray diffra ction. The compound is based on a planar Nb4O4 core with terminal isop ropoxide ligands, while the functional carboxylates act as bridging ch elating ligands. The Nb-O bond lengths vary from 1.840(3) to 2.203(4) Angstrom and follow the order Nb-OR similar to Nb-O < Nb-O(Mc). The Nb -O-Nb angles are bent with values of 146.2(2) and 150.2(2)degrees, res pectively. The polymerization behaviour is discussed. Copyright (C) 19 96 Elsevier Science Ltd