Producción Científica Profesorado

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



Rojas Lima, Susana

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

Synthesis and Study of Monomeric and Dimeric Boronates by Spectroscopic Methods and X-ray Crystallog...

Diastereoselective Synthesis of Spiro-?-lactams via Staudinger Reaction

New boronates prepared from 2,4-pentanedione derived ligands of the NO2 and N2O2 type comparison to...

Comparative Structural Characterization of the Biquaternized N-CH3 and N-BH3 Derivatives of the cis-...

Facile synthesis of 1,3,6-oxadiazepines from 2,2?-(1,2-ethanediyldiimino)bisphenols

Synthesis of nitrogen-, oxygen- and sulphur-containing tripodal ligands with a trimethylbenzene core...

The Structural Chemistry of N-Monolithium Borazines

Preparation of N-aryl-substituted spiro-?-lactams via Staudinger cycloaddition

Bis(acetylsalicylato-j2O,O00)diaquacadmium(II)

Enantioselective synthesis of ?-amino acids. Part 11: Diastereoselective alkylation of chiral deriva...