EXAFS STUDY OF THE POLYNUCLEAR METALLORGANOSILOXANOLATES

Authors
BELIAKOVA OA ZUBAVICHUS YV SLOVOKHOTOV YL SHCHEGOLIKHINA OI ZHDANOV AA
Citation
Oa. Beliakova et al., EXAFS STUDY OF THE POLYNUCLEAR METALLORGANOSILOXANOLATES, Physica. B, Condensed matter, 209(1-4), 1995, pp. 655-656
Citations number
4
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
209
Issue
1-4
Year of publication
1995
Pages
655 - 656
Database
ISI
SICI code
0921-4526(1995)209:1-4<655:ESOTPM>2.0.ZU;2-#
Abstract
Polynuclear cyclohexasiloxanolates M(6)L(2) and M(n)M'(6-n)L(2) (M, M' = Ni, Mn, Fe; L = [-SiPh(O)O-](6)) were studied as precursors of supp orted catalysts. Synchrotron EXAFS data (Novosibirsk VEPP-3 storage ri ng, 2.5 GeV, 120 mA, Si[111] monochromator) revealed three closest coo rdination spheres: M-O (2.0-2.2 Angstrom), M ... M (2.72-2.98 Angstrom ) and M ... Si (3.31-3.40 Angstrom). Interatomic distances for M = Ni or Mn agree with the known X-ray structures of 'tubular' M(6)(mu(2)-O) (12) cores.