500101-20-2Relevant academic research and scientific papers
Cyclometallated compounds of Pd(II): C=N to C=O conversion through acid hydrolysis. Crystal and molecular structures of [Pd{2,4-(CHO)2C6H3} (Cl)(PPh3)2] and [Pd[2,4-(CHO)2C6H3}(Cl) (PPh3)2]
Vila, José M.,Pereira, Ma Teresa,Alberdi, Gemma,Mari?o, Marta,Fernández, Jesús J.,Torres, Margarita López,Ares, Raquel
, p. 67 - 72 (2007/10/03)
Treatment of the chloro-bridged complex [Pd{4-(CHO)C6H3C(H)=NCy}(Cl)]2 (1) with tertiary monophosphines in a 1:4 molar ratio gave the non-cyclometallated monomer complexes [Pd{4-(CHO)C6H3C(H)=NCy}(Cl)(PR3)2] (PR3: (2) PPh3, (3) PEtPh2, (4) PEt2Ph, (5) PMePh2). The crystal structure of 2 is described. Reaction of complexes 2-5 with a mixture of glacial acetic acid-water gave the monomeric complexes [Pd[2,4-(CHO)2C6H3}(Cl)(PR3)2] (PR3 (6), PPh3 (7), PEtPh2 (8), PEt2Ph (9), PMePh2) after cleavage of the C=N group. Complex 6 was characterized crystallographically. Treatment of 1 with the triphosphine bis(2-diphenylphosphinoethyl) phenylphosphine in 1:2 molar ratio gave the mononuclear complex [Pd{4-(CHO)C6H3C(H)=NCy} {Ph2P(CH2)2PPh(CH2)2PPh2-P,P,P}][Cl] (10) in which the phosphine is coordinated through the three phosphorus atoms. Treatment of 10 with a mixture of acetic acid-water also caused cleavage of the C=N bond giving the complex [Pd{2,4-(CHO)2 C6H3}{Ph2P(CH2)2PPh(CH2)2PPh2-P,P,P}][Cl] (11).
