Producción Científica Profesorado

Ni(II) and Pd(II) organometallic and coordination complexes with a new tridentate N,N,O-donor ligand.



Alvarado Rodríguez, José Guadalupe

2012

NJosé C. Alvarado-Monzón, Gabriel Andreu-de-Riquer, J. Alfredo Gutiérrez, Luis M. De León-Rodríguez, Oracio Serrano, José G. Alvarado-Rodríguez, Jorge A. López, i(II) and Pd(II) organometallic and coordination complexes with a new tridentate N,N,O-donor ligand. Cristina Esqueda, POLYHEDRON, Año: 2012 Volume: 40 Issue: 1 Pages: 11-18 DOI: 10.1016/j.poly.2012.04.002 ISSN: 0277-5387


Abstract


Nickel and palladium organometallic [M(R)(NNO)] (R = CH2CMe2C6H5; M = Pd, 1, Ni, 2; R = Me, M = Pd, 3, Ni, 4; R = CH2SiMe3, M = Ni, 5) and coordination [MCl(NNO)] (M = Pd(II), 6, Ni(II), 7), [Ni(NNO)2], 8, complexes containing the potentially tridentate Schiff base NNO-donor ligand which is the condensation product of 2-hidroxynaphtaldehyde and N-benzylethylenediamine, were prepared and characterized by elemental analysis, IR and NMR spectroscopy. The crystal structure of 8 was determined by single X-ray diffraction measurements. Complexes 16 had a square planar structure with the ligand being tridentate through the NNO atoms. On the other hand compound 7 presented a conformational equilibrium in dissolution at room temperature and a rigid square-planar structure at 220 K. The crystal structure of 8 indicated a monoclinic lattice, with a P2(1)/c space group, a = 13.1799(8), b = 14.5556(9), c = 17.5018(11) Å, b = 98.0420 (10), Z = 4. The central Ni atom in 8 was in a N4O2 coordination sphere formed by two NNO Schiff base ligands. In this structure two of the NiN bonds trans to the oxygen atoms were significantly longer than the other two NiN bonds, 2.0175(17), 2.2761(17) versus 2.0070(17), 2.1794(14) Å. The two oxygen phenol atoms of the chelating ligands were cis and the distances of the Ni(II)O(phenol) bond were 2.0410(14) and 2.0415(14) Å, respectively.



Producto de Investigación




Artículos relacionados

Six-membered ring chelate complexes of Pd(II) and Pt(II) derived from di-(2-pyridyl)pyrimidin-2-ylsu...

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

Pyrite?Arsenopyrite Galvanic Interaction and Electrochemical Reactivity

Pentacoordination at antimony in dibenzostibocines via DSb transannular interactions (D = O, S): A s...

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

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

Complexation of the uranyl ion (UO2)2+ with a tetraphenylimidodiphosphinate ligand: the first trinuc...

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

Structural Studies by NMR and X-Ray Crystallography of N-(p-Toluenesulfonyl)-Amino Acids

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