1012050-42-8Relevant articles and documents
Thermal study of ruthenium(II) complexes containing pyridine-2,6-diimines
Dogan,Dayan,Yuerekli,Cetinkaya
, p. 943 - 949 (2009/01/31)
Thermal behaviors of mono-and binuclear Ru(II)-pydim complexes: [PydimCl2RuL] (Pydim: pyridine-2,6-diimine; 2: L=NCMe; 3: L=PPh 3) and [PydimCl2Ru(L-L)RuCl2Pydim] (4: L-L=pyrazine; 5: L-L=4,4'-bipyridine) have been studied in nitrogen atmosphere using TG/DTG and DTA techniques. The decompositions of complexes occur in stepwise. The values of activation energy, E a, and reaction order, n of the thermal decomposition were calculated by means of several methods such as Coats-Redfern (CR), MacCallum-Tanner (MT), Horowitz-Metzger (HM), van Krevelen (vK), Madhusudanan-Krishnan-Ninan (MKN) and Wanjun-Yuwen-Hen-Cunxin (WYHC) based on the single heating rate. Most appropriate method was determined for each decomposition step according to the least-squares linear regression.
Mono- and binuclear ruthenium(II) complexes containing pyridine-2,6-diimine (Pydim) ligands: Synthesis, characterization and catalytic activity in the transfer hydrogenation of acetophenone
Dayan, Osman,?etinkaya, Bekir
, p. 134 - 141 (2008/10/09)
A series of neutral mono- and binuclear Ru(II) complexes: [PydimCl2RuL] (Pydim (1) pyridine-2,6-diimine; (2) L = NCMe; (3) L = PPh3) and [PydimCl2Ru(L-L)RuCl2Pydim] (4) L-L = pyrazine; (5) L-L = 4,4′-bipyridine) have been synthesized from the corresponding (p-cymene)ruthenium dichloride dimer, pydim and ancillary ligands L and L-L, respectively. The Pydim-Ru(II) complexes have been employed as catalysts for the transfer hydrogenation of acetophenone in the presence of KOH using 2-propanol as a hydrogen source. Ligand substitution studies indicate that there is a significant difference in reactivity between complexes containing L/L-L and Pydim. Yields of up to 93% were obtained after 5 min at 82 °C.