Producción Científica Profesorado

Coordination diversity in tin compounds with bis(benzoxazole)phenol as a polydentate ligand: Synthesis and crystal structure studies.



Alvarado Rodríguez, José Guadalupe

2018

Coordination diversity in tin compounds with bis(benzoxazole)phenol as a polydentate ligand: Synthesis and crystal structure studies. Raúl Segovia-Pérez, José G. Alvarado-Rodríguez, Susana Rojas-Lima, Heraclio López-Ruiz, Noemí Andrade-López, Vojtech Jancik, Julián Cruz-Borbolla, Diego Martínez-Otero. Journal of Coordination Chemistry, 71 (2018) no. 22, 3790-3805. https://doi.org/10.1080/00958972.2018.1528498.


Abstract


The reaction of 2,6-bis(benzoxazolyl)-4-tert-butylphenol (HL) with [nBuxSnCl4?x] (x?=?0, 1) in 1:1 stoichiometry yielded the tin coordination complexes [(HL)SnnBuxCl4?x] [x?=?0 (1); x?=?1 (2)]. Deprotonation of HL was performed using reagents having groups with high basicity such as nBuLi or [Sn{N(SiMe3)2}2]. These basic reagents prompted the coordination of the ligand in its anionic form, yielding the complexes [(thf)2Li(L)SnCl4] (3) and [(L)Sn{N(SiMe3)2}] (4), respectively. The molecular structure of HL displayed an intramolecular hydrogen bond OH?N and a planar arrangement of the bis(benzoxazolyl)phenolic system. In the molecular structures of both complexes containing HL an intramolecular hydrogen bond of NH?O type was also present. The coordination of the ligand in either neutral or anionic form is described by a ?O,?N chelate mode toward Sn. All complexes displayed bis(benzoxazolyl)phenolic moieties close to planar; the least planar system was observed in 4 that was also studied by DFT methods.



Producto de Investigación




Artículos relacionados

Mild Oxidation of C?C Bonds of Benzoiridacycles

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

Synthesis, characterization, and crystal structures of n-alkyldiorganodithiophosphates RS2P(OC6H4)2

Synthesis and crystal structures of cis-palladium(II) and cis-platinum(II) complexes containing dipy...

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

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

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

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

Pyrite?Arsenopyrite Galvanic Interaction and Electrochemical Reactivity

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