Preparation, crystal structures and NMR characterization of substituted-benzoate complexes Nickel(II)-N3-macrocycles
2006; Elsevier BV; Volume: 26; Issue: 5 Linguagem: Inglês
10.1016/j.poly.2006.09.068
ISSN1873-3719
AutoresM. Dolores Santana, Gabriel Garcı́a, G. López, A.A. Lozano, Consuelo Vicente, Luis Garcı́a, Jose Pérez,
Tópico(s)Metal complexes synthesis and properties
ResumoSubstituted-benzoate complexes of nickel(II) of the types bidentate [Ni(mcN3)(Bz)](PF6) and monodentate [Ni(mcN3)(Bz)(H2O)](PF6) have been prepared by acid-base reaction between the hydroxo complexes [Ni(mcN3)(μ-OH)]2(PF6)2 (mcN3 = 2,4,4-trimethyl-1,5,9-triazacyclododec-1-ene (Me3-mcN3) or its 9-methyl derivative (Me4-mcN3)) and the corresponding benzoic acid. The paramagnetic nickel(II) complexes have been characterized in solution by NMR spectroscopy. The influence of the substituents on the hyperfine shift patterns for substituted-benzoate complexes of nickel(II) has been studied. The substituent effects upon the coordination mode of substituted benzoates have been established by X-ray diffraction.
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