Producción Científica Profesorado

Reactivity of 2?mercaptopyridines with Iridium(I)?Tris(pyrazolyl) borate complexes



Rojas Lima, Susana

2021

Manuel A. Gomez?Bonilla, Verónica Salazar?Pereda, Daniel Mendoza?Espinosa, Simplicio Gonzalez?Montiel, Aracely Castañeda?Ovando, Susana Rojas?Lima, Cesar I. Sandoval?Chavez, Jorge A. Lopez?Jímenez. Reactivity of 2?mercaptopyridines with Iridium(I)?Tris(pyrazolyl) borate complexes. European Journal of Inorganic Chemistry, 2021, 13, 1244-1250. https://doi.org/10.1002/ejic.202001153


Abstract


Reaction of of the Ir(I) complex [TpMe2Ir?(C2H4)2] (1) with a variety of mercaptopyridines produces in good yields the Ir(III)?metallacycles 2?4 with the general formula [TpMe2Ir(C2H5)(k2?(N,S)?mercaptopyridine)]. Complexes 2?4 are proposed to take place by the initial formation of the 16 electron intermediate [TpMe2Ir(CH=CH2)(C2H5)] which then coordinates the nitrogen atom of the mercaptopyridine and promotes the deprotonation of the SH group via the elimination of an ethylene molecule. Heating of complex [TpMe2Ir(?4?CH2=C(Me)C(Me)=CH2)]] (5) at 100?C with the substituted mercaptopyridines results in the formation of the Ir(III) complexes 6?8 with the general formula [TpMe2Ir(C6H5)(?2?(N,S)?mercaptopyridine)]. Generation of complexes 6?8 is proposed to take place by the initial formation of the [TpMe2Ir(C6H5)2N2] complex which after releasing nitrogen coordinates the mercaptopyridine in a ?1?fashion and favour the SH moiety deprotonation with the release of a benzene molecule. All complexes have been fully characterized by NMR spectroscopy, FT?IR, elemental analysis and in the case of 2, 4, and 8 by X?ray crystallography. Details of the reaction conditions, characterization and isolation of the products will be discussed.



Producto de Investigación




Artículos relacionados

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

Effect of TiO2Al2O3 SolGel Supports on the Superficial Ni and Mo Species in Oxidized and Sulfided Ni...

Et3, and efficient Mediator for Xanthate Transfer Based Radical Processes.

An efficient potassium cyanide-promoted synthesis of 2-arylbenzoxazoles from [4.3.0]boron heterobicy...

Stereoselective addition of allylmagnesium chloride to the CN bond of [4.3.0] boron heterobicycles

Addition reaction of benzylbenzylidenenamine to lithium enolates of1,3-dioxolan-4-one: synthesis of ...

Synthesis of new homochiral 2,3-dialkylpiperazines derived from (R)-(?)-phenylglycinol

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

The Structural Chemistry of N-Monolithium Borazines

Study of the reactivity of squarylferrocenes. Addition of amines and aminoesters