Study of the Effect of the Phosphane Bridging Chain Nature on the Structural and Photophysical Properties of a Series of Gold(I) Ethynylpyridine Complexes

Abstract

(CϵCC 5 (5), 1,3-bis(diphenylphosphanyl)propane (6), 1,4-bis(diphenylphosphanyl)butane (7), 1,1Ј-bis(diphenylphosphanyl)ferrocene (8)

Structural and Photophysical Properties of (Phosphane)gold(I)‐Decorated 4,4′‐Diethynyl‐2,2′‐bipyridine Ligands

“…[3,[9][10][11] By combining phosphine and alkyne metal-binding domains at a gold(I) centre, one gains significant scope for the design of macromolecules: [12] rigid-rod P-Au-C≡C-domains and a wide range of readily accessible mono-, bi-and polydentate phosphine ligands containing sp 3 hybridized P atoms combine with a tendency for gold atoms to aggregate (so-called 'aurophilicity'). [13][14][15]16] Of the 215 compounds in the CSD (CSD v 5.3 with May 2009 updates, Conquest v. 1.11) [17] possessing R 3 PAuC≡C units, only 19 [9,[18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] exhibit intermolecular aurophilic interactions resulting in onedimensional Au...Au bonded polymers. Of particular relevance to our work is the trigold derivative ( n Bu 3 PAuC≡CCH 2 OCH 2 ) 3 CCH 2 Otpy (tpy = 2,2';6',2"-terpyridine) which forms one-dimensional chains with an oriented assembly in the solid state in which all the tpy units point in the same direction.…”

The Coordination and Supramolecular Chemistry of Gold Metalloligands

“…[40] The former isolated Au I (37)a nd Pt II (38)c omplexes of metalloligand 36 a.F lexiblem etalloligands containingt wo (39)o r three pyridine units (40), [36] and rigidb is(pyridine) complexes (41)w erereported by Ferrer and co-workers. [41] Scheme2.Metalloligands and heterometallic complexes derived from mercaptopyridines.…”

“…Eur.J. 2018,24,[32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] www.chemeurj.org Ferrer,R odríquez, and co-workersh ave synthesized as eries of metalloligandsc ontaining the 4-pyridyl-2,3,5,6-tetrafluorophenylu nit (tfppy). [42] By reactiono f[ Ph 3 PAu(tfppy)] with [M(OH 2 ) 2 (diphosphine)] 2 + (diphosphine = dppp, dppf;M = Pd, Pt) they isolated complexes of the type 42 ( Figure 10).…”

“…Eur.J. 2018,24,[32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] www.chemeurj.org MeCN, MeOH,a nd Me 2 CO. [47] These abrupt changes in the emission energy are likely to originate from switching the Au···Cu metallophilic interactions on or off.…”

“…2018,24,[32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] www.chemeurj.org to six different metal centers, such as 57,t hrough severals uccessive metalloligand-to-metal coordination steps. [53] Alkynyl-gold metalloligands containing two bipyridyl units (58)w ere reported by the groups of Chen [54] andu s ( Figure 15).…”