4.7 Article

Reactions of μ-dichlorobis(η3-allyl)palladium(II) with bis(1-H-benzo-triazolyl-methyl) selenide: Formation of unexpected polymeric structure with dormant Se donor site. Applications of the polymeric Pd-complexes in Heck coupling

期刊

INORGANIC CHEMISTRY COMMUNICATIONS
卷 12, 期 11, 页码 1120-1123

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ELSEVIER
DOI: 10.1016/j.inoche.2009.09.003

关键词

(eta(3)-Allyl)palladium(II); Bis(1-H-benzotriazolylmethyl) selenide; Polymeric complex; Synthesis; Crystal structure; Heck C-C coupling

资金

  1. Council of Scientific and Industrial Research (India) [01 (2113)07/EMR-II]
  2. Department of Science and Technology (India) [SR/S1/IC23/06]
  3. University Grants Commission (India)

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Bis(1-H-benzotriazolylmethyl)selenide (L) has been synthesized by reacting Se2- generated in situ with 1-(chloromethyl)-1H-benzotriazole. Proton. C-13 and Se-77 NMR spectra of L are characteristic. mu-Dichlorobis(eta(3)-allyl)palladium(II) reacts with L resulting in polymeric complexes which give single-crystals of stoichiometry [Pd(eta(3)-C3H5)(L)]center dot ClO4/PF6 center dot CH3CN (1/2). The single crystal X-ray diffraction analyses of these polymeric species reveal that they have chain type of structures, and anions through non-covalent interactions interlink these chains. On changing anion ClO4- with PF6- the nature of chain is not affected. The 1/2 have been found suitable for catalyzing Heck's C-C coupling reactions (TON up to 93,000: conversion up to 93%). (c) 2009 Elsevier B.V. All rights reserved.

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