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

Synthesis and Spectroelectrochemical Studies of Mixed Heteroleptic Chelate Complexes of Ruthenium(II...

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

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

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

Hypervalence at tin(IV) by transannular bonding of sulfur in an eight-membered ring: The case of dib...

Hypervalence in germanium compounds containing the tetracylic moiety {S(C6H3S)2O}Ge via OGe transann...

Synthesis and crystal structure of the N-8-(diphenyl-hydroxy-2-aminomethylpyridine)borane

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...

Synthesis and Relative Stability of a Series of Compounds of Type [Fe(II)(bztpen)X]+, Where bztpen =...