218909-19-4Relevant academic research and scientific papers
Phosphorus ylide-containing niobium complexes: Preparation and characterization of homo- and heteronuclear compounds with an α-keto ylide ligand
Antinolo,Carrillo-Hermosilla,Diez-Barra,Fernandez-Baeza,Lara-Sanchez,Otero,Tejeda
, p. 97 - 105 (1998)
The reactions have been studied between [{NbCl3(dme)}n] or [NbCl3(dme)(RCCR′)] with a heterocycle containing α-keto stabilized phosphorus ylide, 2-TCMP=[{2-thiazolylcarbonyl}methylene]triphenylphosphorane, and these reactions give the α-keto ylide-containing niobium complexes [{NbCl3(2-TCMP)}2] (1) and [NbCl3(2-TCMP)(RCCR′)], R=R′=Ph (2); R=R′=Me (3); R=R′=Et (4); R=Ph, R′=Me (5); R=Ph, R′=Et (6); R=Ph, R′=Pr (7); R=Ph, R′=SiMe3 (8), respectively. The reactivity of 5 towards different reagents has also been investigated. Compound 5 reacts with MeLi to give, through a deprotonation process of a phenyl ring, the ortho-metallated complex [NbCl2{NOSC4H2CHPPh2(C 6H4)-O,N}]2 (9), with the loss of the alkyne ligand. Furthemore, 5 reacts with [AuPPh2R]CF3SO3 and AgCF3SO3 to give the heterometallic complexes [NbCl3(2-TCMP)Au PPh2R]2 (CF3SO3)2, R=Ph (10), R=C3H2SN (11), and [NbCl3(2-TCMP)Ag]2 (CF3SO3)2 (12), respectively, with the loss of the alkyne ligand in each case.
