519058-75-4Relevant academic research and scientific papers
Synthesis, reactivity and characterization of cyclometallated palladium(II) compounds derived from pinacolone-N,N-dimethylhydrazone
Vila, José M.,López-Torres, Margarita,Fernández, Alberto,Pereira, M. Teresa,Ortigueira, Juna M.,Fernández, Jesús J.
, p. 185 - 192 (2008/10/08)
Pinacolone-N,N-dimethylhydrazone was regiospecifically cyclopalladated by Pd(OAc)2 in glacial acetic acid on the -C(Me)=N-methyl group to give the acetato-bridged complex [Pd{CH2C(CMe3)=NNMe2}(μ-O2 CMe)]2 (1). Subsequent treatment with aqueous sodium chloride or bromide gave the corresponding halide-bridged complexes [Pd{CH2C(CMe3)=NNMe2}(μ-X)]2 (2, X=Cl; 3, X=Br). Treatment of 2 and 3 with tertiary diphosphines in a 1:1 molar ratio yielded the dinuclear complexes [{Pd[CH2C(CMe3)=NNMe2](X)}2 {μ-Ph2PRPPh2}] (4, 5, R=CH2; 6, 7, R=CHMe; 8, 9, R=CCH2; 10, 11, R=NMe; 12, 13, R=trans-CHCH, 14, 15, R=C2H4, 16, 17, R=C3H6; 18, 19, R=C4H8). Treatment of 2 and 3 with AgClO4 and the appropriate diphosphine ligand in a 1:2 molar ratio, afforded the mononuclear species [Pd{CH2C(CMe3)=NNMe2}(Ph2PRPPh 2-P,P′)][ClO4]}] (20, R=CH2; 21, R=CHMe; 22, R=CCH2; 23, R=NMe; 24, R=cis-CHCH, 25, R=C2H4, 26, R=C3H6; 27, R=C4H8). The complexes were characterized by elemental analysis (C, H, N), conductivity measurements, IR and 1H and 31P{1H} NMR spectroscopy, and by mass spectrometry.
