- Reactions of [(Ar)Ru(PPh3)2(CH3CN)]X (Ar=Cp*, η5-C5Me5 and indenyl, η5-C9H7; X-PF6 o BF 4) with terpyridines: Hypodentate nature of terpyridines (phterpy, pyterpy and diterpy)
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Ligand displacement reactions of the complexes of the type(Ar)Ru(PPh 3)2(CH3CN)]PF6 {Ar=Cp* (1) and indenyl (2)} have been investigated with N3-terpyridine ligands, 4′-phenyl-2,2′:6′,2″ terpyridine (phterpy), 4′-(4?-pyridyl)-2,2′:6′,2″ terpyridine (pyterpy) and 1,4-bis(2,2′:6,6″ terpyridin-4-yl) benzene (diterpy). The complexes [(Ar)Ru(PPh3)2(CH3CN)]PF6 {Ar=Cp* (1) and indenyl (2)} are reacted with these ligands to form stable complexes of the type [Cp*Ru(PPh3)(phterpy)]BF 4 (3), [Cp*Ru(PPh3)(pyterpy)]BF4 (4), [(η5ind)Ru(PPh3)(phterpy)]PF6 (5), [(η5ind)Ru(PPh3)(pyterpy)]PF6 (6), [(Cp*Ru(PPh3)}2 (diterpy)](BF4) 2 (7) and [(η5ind)Ru(PPh3)} 2(diterpy)l(PF6)2 (8) where respective ligands are coordinated in a bidentate fashion. When these reactions are carried out with chloro analogues [Cp*Ru(PPh3)2Cl] (9) and [(η5-ind)Ru(PPh3)2Cl] (10) with respective ligands viz. phterpy and pyterpy, a mixture of products are isolated including the complex type 3-6 and [RuCl(PPh3)2(N 3-phterpy)]PF6 (11) and [RuCl(PPh3) 2(N3-pyterpy)]PF6 (12) respectively. All these complexes have been characterized by spectral and analytical data.
- Rymmai,Rao, K. Mohan
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p. 1892 - 1895
(2007/10/03)
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