作者:Stefan Köcher、Gerard P.M van Klink、Gerard van Koten、Heinrich Lang
DOI:10.1016/s0022-328x(03)00753-8
日期:2003.11
The meta-diaminoaryl ferrocene Fe[eta(5)-C5H4(NCNH)](2) [NCNH = 1-C6H3(CH2NMe2)(2)-3,5] (3) can be synthesised by the reaction of Fe[eta(5)-C5H4(ZnCl)](2) (1) with I-C6H3(CH2NMe2)(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 (BuLi)-Bu-t and (Me2S)(2)PdCl2 trimetallic Fe[eta(5)-C5H4(NCN-4-PdCl)](2) NCN = 1-C6H2(CH2NMe2)(2)-3,5} (6) along with heterobimetallic Fe[eta(5)-C5H4(NCNH)][eta(5)-C5H4(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. (C) 2003 Elsevier B.V. All rights reserved.
Shape-Persistent Nanosize Organometallic Complexes: Synthesis and Application in a Nanofiltration Membrane Reactor
作者:Harm P. Dijkstra、Cornelis A. Kruithof、Niek Ronde、Rob van de Coevering、Diego J. Ramón、Dieter Vogt、Gerard P. M. van Klink、Gerard van Koten
DOI:10.1021/jo0257602
日期:2003.2.1
Shape-persistent multi(NCN-palladium and/or -platinum) complexes having one- (5 and 6), two- (1 and 2), and three-dimensional (3 and 4) geometries were prepared in moderate to good yields. Two different approaches were used to construct the multimetallic materials: (i) the construction of the multisite ligands followed by the permetalation step and (ii) selective and mild one-pot coupling of monometallic