640298-75-5Relevant academic research and scientific papers
Ferrocene-bridged Pd-NCN pincer complexes
K?cher, Stefan,van Klink, Gerard P.M.,van Koten, Gerard,Lang, Heinrich
, p. 230 - 234 (2003)
The meta-diaminoaryl ferrocene Fe[η5-C5 H4(NCNH)]2 [NCNH=1-C6H3 (CH2NMe2)2-3,5] (3) can be synthesised by the reaction of Fe[η5-C5H4(ZnCl)] 2 (1) with I-C6H3(CH2 NMe2)2-3,5 (2) in a 1:2 molar ratio in the presence of catalytic amounts of [Pd(PPh3)2]. The two meta-dimaminoaryl NCNH pincer units in 3 can be used to assemble multimetallic complexes. Thus, 3 produces on reaction with t BuLi and (Me2S)2PdCl2 trimetallic Fe[η5-C5H4(NCN-4-PdCl)]2 {NCN=1-C6H2(CH2NMe2) 2-3,5} (6) along with heterobimetallic Fe[η5 -C5H4(NCNH)][η5-C5 H4(NCN-4-PdCl)] (5). Complex 6 contains two bis-ortho-chelated pincer NCN-PdCl units, whereas 5 possesses one bis- ortho -chelated NCN pincer entity and one non-metallated NCNH moiety. Complex 6 is the first example in organometallic chemistry in which two bis-ortho-chelated diaminoaryl palladium units are bridged via the respective para C-atoms spanned by a redox-active ferrocenyl building block.
