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Synthesis of two covalently linked bis(2,2 ': 6 ',2 ''-terpyridine) (terpy) chelating ligands with different length spacers, comparison of the crystal structures of their mononuclear nickel(II) complexes, and kinetic and mechanistic studies of the reaction of one ligand with [Fe(terpy)(2)](2+)

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UNSPECIFIED (2000) Synthesis of two covalently linked bis(2,2 ': 6 ',2 ''-terpyridine) (terpy) chelating ligands with different length spacers, comparison of the crystal structures of their mononuclear nickel(II) complexes, and kinetic and mechanistic studies of the reaction of one ligand with [Fe(terpy)(2)](2+). JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS (4). pp. 445-449. ISSN 0300-9246

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Abstract

Two new covalently linked bis(2,2':6',2 "-terpyridine)-chelating hexadentate ligands, 1,3-bis(2,2':6',2 "-terpyridyl-5-ylmethylsulfanyl)propane (L-1), and 1,4-bis(2,2':6',2 "-terpyridyl-5-ylmethylsulfanyl)butane (L-2), and their six-coordinate mononuclear metal complexes [ML][PF6](2) (M = Fe and Ni; L = L-1 and L-2) have been prepared and characterised. The X-ray structures of [NiL](PF6)(2) (L = L-1 and L-2) have been compared to establish that L 2 has the optimum length of linker to give the least strained mononuclear complex. The marked stability of [ML](2+) is demonstrated by kinetic studies that show that one equivalent of L-1 is capable of substituting both 2,2':6',2 "-terpyridine (terpy) ligands of [Fe(terpy)(2)](2+) to give [FeL1](2+) in a two stage kinetic process.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Journal or Publication Title: JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
Publisher: ROYAL SOC CHEMISTRY
ISSN: 0300-9246
Date: 2000
Number: 4
Number of Pages: 5
Page Range: pp. 445-449
Publication Status: Published
URI: http://wrap.warwick.ac.uk/id/eprint/13682

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