Coordination of Piano‐Stool Complexes to a Hydrogen‐Bonded Rosette‐Type Assembly. Issue 25 (6th July 2017)

• Record Type: Journal Article
• Authors: Zhang, Fan; Therrien, Bruno
• Is Part Of: European journal of inorganic chemistry. Issue 25(2017)
• Page Start: 3214
• Page End: 3221
• Publication Date: 2017-07-06
• Subjects: Piano‐stool complexes -- Rosettes -- Hydrogen bonds -- Ruthenium -- Rhodium; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201700458
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract : A new melamine (ME)–barbituric acid (BA) rosette‐type system has been prepared and characterized. The introduction of a pyridyl group on the barbituric acid moiety allows coordination of metal ions at the periphery of the ME3 · BA3 rosette. Reactions of 1.5 equiv. of [Ru(cym)Cl2 ]2 (cym = p ‐cymene) or [M(Cp*)Cl2 ]2 (Cp* = pentamethylcyclopentadienyl; M = Rh, Ir) with the rosette afford the corresponding ME3 · [BA{Ru(cym)Cl2 }]3 and ME3 · [BA{M(Cp*)Cl2 }]3 assemblies. The neutral metal‐containing rosettes ME3 · [BA{Ru(cym)Cl2 }]3 and ME3 · [BA{Rh(Cp*)Cl2 }]3 can also be obtained by adding the mononuclear complexes [BA{Ru(cym)Cl2 }] and [BA{Rh(Cp*)Cl2 }] to N, N′ ‐bis(4‐ tert ‐butylphenyl)melamine in chloroform. In addition, the triphenylphosphine derivatives [Ru(cym)(PPh3 )Cl2 ] or [M(Cp*)(PPh3 )Cl2 ] react with ME3 · BA3 in the presence of silver triflate to generate the ionic rosette‐type assemblies ME3 · [BA{Ru(cym)(PPh3 )Cl} + ]3 · 3CF3 SO3 – and ME3 · [BA{M(Cp*)(PPh3 )Cl} + ]3 · 3CF3 SO3 –, respectively. Abstract : Rosette‐type assemblies mixing covalent, coordination, hydrogen‐bond, and ionic interactions have been synthesized and characterized, providing a new strategy for the preparation of metal‐containing supramolecular assemblies.