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A Calix[4]arene‐Based Bipyridine Podand as Versatile Ligand for Transition Metal Cations
Author(s) -
Dalbavie JeanOlivier,
RegnoufdeVains JeanBernard,
Lamartine Roger,
Perrin Monique,
Lecocq Sylvain,
Fenet Bernard
Publication year - 2002
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200203)2002:4<901::aid-ejic901>3.0.co;2-9
Subject(s) - chemistry , nickel , zinc , cobalt , trifluoromethanesulfonate , bipyridine , copper , transition metal , inorganic chemistry , chloride , ligand (biochemistry) , 2,2' bipyridine , polymer chemistry , metal , medicinal chemistry , crystal structure , organic chemistry , catalysis , biochemistry , receptor
The calix[4]arene‐based podand 1 which incorporates two 2,2′‐bipyridine units and two benzyl units in alternate positions at the lower rim has been subjected to complexation studies with copper(I), copper(II), cobalt(II), nickel(II), and zinc(II). The reaction of 1 with Cu(MeCN) 4 PF 6 afforded the expected mononuclear Cu I complex. With cobalt(II), nickel(II), and zinc(II) chloride, 1 gave dinuclear tetrahedral complexes in which each bipyridine unit is associated to two chlorine atoms around the metal centre. With Zn II , replacing the chloride ion for the trifluoromethanesulfonate ion resulted in the formation of the mononuclear complex species. The complexes thus obtained were fully characterised, notably by NMR techniques and, for the dinuclear cobalt, nickel and zinc species, by X‐ray crystal structure analyses. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)