Coordination Behaviour of 1-(4,2′:6′,4′′-terpyridin-4′-yl)ferrocene and 1-(3,2′:6′,3′′-terpyridin-4′-yl)ferrocene: Predictable and Unpredictable Assembly Algorithms

Abstract

The reaction of 1-(4,2':6',4''-terpyridin-4'-yl)ferrocene (2) with ZnI2 leads to [{ZnI2 (2) Dedication:We dedicate this work to our good friend Len Lindoy on the occasion of his 80th birthdayLen, you have been an inspiration and colleague to two of the authors for over 30 years.

4,2’:6’,4”- and 3,2’:6’,3”-Terpyridines: The Conflict between Well-Defined Vectorial Properties and Serendipity in the Assembly of 1D-, 2D- and 3D-Architectures

“…Ligand 7 (Scheme 3) is related to ditopic ligand 1 (Scheme 2) but offers only one 4,2’:6’,4”-tpy domain. Both 1D-polymer chains and metallomacrocycles have been reported for combinations of 7 with ZnX 2 (X = Cl, Br, I, SCN or OAc) [24,25]. The assemblies are competitive for ZnI 2 and both the 1D-chain [{ZnI 2 ( 7 )}∙2CHCl 3 ] n [25] and discrete metallosquare [Zn 4 I 8 ( 7 ) 4 ∙1.4MeOH] [24] have been crystallographically characterized.…”

“…Both 1D-polymer chains and metallomacrocycles have been reported for combinations of 7 with ZnX 2 (X = Cl, Br, I, SCN or OAc) [24,25]. The assemblies are competitive for ZnI 2 and both the 1D-chain [{ZnI 2 ( 7 )}∙2CHCl 3 ] n [25] and discrete metallosquare [Zn 4 I 8 ( 7 ) 4 ∙1.4MeOH] [24] have been crystallographically characterized. A feature that the ferrocenyl unit in 1 or 7 brings to crystal packing is its possibility for face-to-face π-stacking with pyridine rings [24].…”

“…The assemblies are competitive for ZnI 2 and both the 1D-chain [{ZnI 2 ( 7 )}∙2CHCl 3 ] n [25] and discrete metallosquare [Zn 4 I 8 ( 7 ) 4 ∙1.4MeOH] [24] have been crystallographically characterized. A feature that the ferrocenyl unit in 1 or 7 brings to crystal packing is its possibility for face-to-face π-stacking with pyridine rings [24]. Ditopic ligand 8 (Scheme 3) is a member of the 1,4-bis(alkoxy)-2,5-bis(4,2’:6’,4”-terpyridin-4’-yl)benzene family to which 2 (Scheme 2) belongs; while we have investigated assemblies formed between such ligands with zinc(II) halides [15], we have not described reactions with Co(NCS) 2 .…”

Celebrating Professor Len Lindoy’s 80th Birthday

“…[3] Ed Constable and Catherine Housecroft in Basel, who have known Len since their postdoctoral time at Cambridge, report on the coordination behaviour of ferrocene-functionalised terpyridine ligands with predictable and unpredictable assembly algorithms. [4] Len has regularly visited Asia -in particular Korea, Japan, and more recently China. Shim Sung Lee (Korea) and coworkers report endocyclic and endo/exocyclic silver(I) complexes of thiaoxaaza-macrocycles.…”

“…Shim Sung Lee (Korea) and coworkers report endocyclic and endo/exocyclic silver(I) complexes of thiaoxaaza-macrocycles. [5] Keisuke Ohto (Japan) and Yang Kim (Korea) describe the synthesis of a novel dibenzylamide derivative of p-tert-octylcalix [4]arene and its extraction properties towards noble metal ions. [6] Yang Kim (Korea), with collaborators Shinya Hayami (Japan), Jack Harrowfield (Strasbourg), and others, present the crystal structure of a heterometallic luminophore -the Ru(II) complex of a ferrocenyl-terpyridine with a flexible linkage.…”