Producción Científica Profesorado

Synthesis and structural characterization of mono- and dinuclear NiII and PdII complexes derived from tetradentate 1,7-bis-(pyridin-2-yl)-2,6-diaza-1,6-heptadiene



Andrade López, Noemí

2013

J. Roberto Pioquinto-Mendoza, David G. Olvera-Mendoza, Noemí Andrade-López*, José G. Alvarado-Rodríguez, Rafael Moreno-Esparza andMarcos Flores-Álamo,Synthesis and structural characterization of mono- and dinuclear NiII and PdII complexes derived from tetradentate 1,7-bis-(pyridin-2-yl)-2,6-diaza-1,6-heptadiene, Journal of Coordination Chemistry, (2013), 66, Issue 14, pages 2477-2488, DOI:10.1080/00958972.2013.806985, ISSN 0095-8972 (Print), 1029-0389 (Online)


Abstract


The reaction of Schiff base 1,7-bis-(pyridin-2-yl)-2,6-diaza-1,6-heptadiene (L) with either NiCl26H2O or [PdIICl2(CH3CN)2]/Na[BF4] in 1?:?1 stoichiometry yielded mononuclear ionic complexes, trans-[NiII(L)(H2O)2]Cl23H2O (13H2O) and [PdII(L)][BF4]2 (2), respectively; the reaction of L with [PdIICl2(CH3CN)2] in 1?:?2 ratio yielded dinuclear cis-[PdII 2(?-L)Cl4] (3). Complexes 1?3 were characterized by vibrational spectroscopy and X-ray diffraction; diamagnetic 2 and 3 were also characterized by NMR in solution. The molecular structures of 1 and 2 displayed tetradentate coordination of L with formation of two five-membered and one six-membered chelate rings for both complexes. In 3, L showed bidentate coordination mode for each pyridylimine toward PdII. Complex 1 has distorted octahedral geometry around NiII and an extended hydrogen-bond network; distorted square planar geometry around PdII in 2 and 3 was observed.



Producto de Investigación




Artículos relacionados

Versatile behavior of 2-guanidinobenzimidazole nitrogen atoms toward protonation, coordination and m...

Organometallic tin complexes derived from 2-guanidinobenzimidazole

Synthesis, Characterisation and Properties of As-Monohalogenated Dibenzoarsocines S(C6H4S)2AsHal (Ha...

Synthesis and Crystal Structure of [Te{S(C6H3S)2O}]: A Tetracyclic Tellurium(II) Compound Displaying...

Determination of Glucose by Flow Injection Analysis with Amperometric Detection at Fe(III)-(tris(3,5...

Synthesis, characterization and crystal structures of organolead dithiolate compounds displaying tra...

cis-Palladium(II) complexes of derivatives of di-(2-pyridyl)methane: Study of the influence of the b...

Synthesis, characterization and crystal structures of dipyridyl-N-methylimine and cloro-bis (N,N?-2,...

Structural differences in eight- and ten-membered heterocyclic tin compounds displaying transannular...

Study of the D?Sb (D = O, S) Transannular Interaction in Sb-Monohalogenated Dibenzostibocines ? An E...