Syntheses and structures of alkaline earth-transition metal bimetallic complexes as heterogeneous hydrodechlorination catalyst precursors

Errun Ding, Matthew R. Sturgeon, Aaron Rath, Xuenian Chen, Mark A. Keane, Sheldon G. Shore

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A series of alkaline earth-transition metal heterobimetallic complexes {(DMF)xM(µ-CN)yM*(CN)4-y}8 [M = Ba: M* = Ni 1, M* = Pd 2, M* = Pt 3; M = Sr. M* - Ni 4, M* = Pd 5, M* = Pt 6; x = 3 or 4; y = 3 or 4] was prepared. Single-crystal X-ray diffraction analysis revealed that {(DMF) 4Ba(µ-CN)3Ni(CN)}8 1, {(DMF)4Sr(µ- CN)3Ni(CN)}8 4, {(DMF)4Sr(µ-CN) 3Pd(CN)}8 5, and {(DMF)4Sr(µ-CN) 3Pt(CN)}8 6 form isostructural one-dimensional "ladder" arrays through isocyanide linkages (M-NC-M*), while {(DMF)3Ba(µ-CN)4Pd}8 2, and {(DMF) 3Ba(µ-CN)4Pt}8 3 are two-dimensional puckered sheet like arrays. These bimetallic complexes can serve as effective precursors for the synthesis of supported bimetallic catalysts. It has been established that Ba-Pd/Si02 and Sr-Pd/Si02 catalysts, prepared from 2 and 5 loaded onto a silica support, delivered specific reaction rates in the hydrodechlorination of mono- and dichloro benzene that were over an order of magnitude greater than that achieved with conventional Pd/Si02. © 2009 American Chemical Society.

Original languageEnglish
Pages (from-to)325-330
Number of pages6
JournalInorganic Chemistry
Volume48
Issue number1
DOIs
Publication statusPublished - 5 Jan 2009

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