Application of UV-Vis spectroscopy to high throughput screening of hydroamination catalysts

Self-assembled supramolecular structures of O,N,N′ tridentate imidazole–phenol Schiff base compounds

“…This trans conguration has been reported for similar compounds. [10][11][12][13][14][15][16][17][18][19][20]32 The bond distances and angles show little variation within the present library of compounds and compare favourably with those previously reported for related compounds. [10][11][12][13][14][15][16][17][18][19][20] The data in Table 2 show that the N3-C6-C7 and N3-C6-C11 bond angles are (unexpectedly) signicantly different, measuring ca.…”

“…However, crystal structures of metal complexes containing derivatives of this chelating ligand are known (Scheme 1). [10][11][12][13][14][15][16][17][18][19][20] Homochiral Fe(II) molecular magnet complexes containing N,N 0 bidentate ligands of type (a) and (b) (as shown in Scheme 1) have been synthesised, exhibit spin-crossover properties, [10][11][12][13] and may potentially nd application as a host for racemic separation. 12 These N-methyl imidazole Schiff base ligands have also been used in catalysis.…”

“…14 Rh(I) complexes of ligand (c) have also been used as catalysts for the mono and dihydroalkoxylation of alkynes 15 and an Ir(III) complex containing ligand (d) has been found to be an active in situ catalyst for indole synthesis via intramolecular hydroamination. 16,17 Boudier and co-workers prepared Ni(II) complexes of the O,N,N 0 tridentate ligand (e) for use as transition metal pre-catalysts in ethylene oligomerisation. 18 In biological applications, the N,N 0 ,N 00 tridentate ligand (f) has been coordinated to Cu(II) for purposes of creating novel anticancer chemotherapeutic agents, 19 while Ir(III) and Rh(III) uorescent complexes of ligand (g) can be used as bioimaging probes.…”

Bay-Region Functionalisation of Ar-BIAN Ligands and Their Use Within Highly Absorptive Cationic Iridium(III) Dyes

“…Our team has sought to expand the library of potential candidates for light harvesting by developing iridium and other metal complexes composed of bis(arylimino)acenaphthene (Ar-BIAN) ligands that are highly modular and can be readily synthesised from commercially available reagents 20 – 24 . The Ar-BIANs are known to be versatile π-acceptors and have been employed for hydroamination and hydrogenation catalysis with iridium complexes 25 – 27 . We surmised that the Ar-BIAN ligand can be functionalised with an electron-withdrawing anchoring functionality such as a carboxylate, with the dual function of facilitating grafting on the surface of metal oxides, and also enhancing the absorption profile.…”

α‐Dialdimine Complexes of Rhodium(I) and Iridium(I): Their Reactivity with Dioxygen and Dihydrogen

“…Addition of B 2 cat 3 to [Rh(acac){ArN=C(Me)C(Me)=NAr}] yielded the complex [Rh(η 6 ‐catBcat)(ArN=C(Me)C(Me)=NAr)] (cat = 1,2‐O 2 C 6 H 4 , Ar = 2,6‐ i Pr 2 C 6 H 3 ) 9a. The rhodium complex [Rh(Cl)(MesBIAN)(CO)] [MesBIAN = bis(2,4,6‐trimethylphenylimino)acenapthene] was used as a catalyst for the hydroamination of 2‐(2‐phenylethynyl)aniline to give N ‐(2‐methylvinyl)‐2‐phenylindole 11a…”