210307-50-9Relevant academic research and scientific papers
Cylometallated semicarbazone complexes of palladium(II). Crystal and molecular structure of [{Pd[C6H4C(Et)=NN(H)C(=O)NH2]} 2(μ-Ph2P(CH2)3PPh 2)][ClO4]2
Vila, Jose M.,Pereira, Teresa,Ortigueira, Juan M.,Lopez Torres, Margarita,Castineiras, Alfonso,Lata,Fernandez, Jesus J.,Fernandez, Alberto
, p. 21 - 30 (1998)
Treatment of the semicarbazones 4-MeC6H4C(Me)=NN(H)C(=O)NH2 a, 3,4-Me2C6H3C(Me)=NN(H)C(=O)NH2 b and C6H5C(Et)=NN(H)C(=O)NH2 c, gave the [C,N,O] cyclometallated compounds [Pd{4-MeC6H3C(Me)=NN(H)C(=O)NH2}(Cl)] 1a, [Pd{3,4-Me2C6H2C(Me)=NN(H)C(=O)NH 2}(Cl)] 1b and [Pd{C6H4C(Et)=NN(H)C(=O)NH2}(Cl)] 1c, after C-H activation. Treatment of compounds 1a, 1b, and 1c with silver perchlorate followed by treatment with tertiary diphosphine ligands gave the dinuclear [C,N,O] cyclometallated compounds [{Pd[4-MeC6H3C(Me)=NN(H)C(=O)NH2]} 2(μ-L)][ClO4]2 2a-7a, [{Pd[3,4-Me2C6H2C(Me)=NN(H)C(=O)NH 2]}2(μ-L)][ClO4]2 2b-7b, [{Pd[C6H4C(Et)=NN(H)C(=O)NH2]} 2(μ-L)][ClO4]2 2c-7c, [L=Ph2P(CH2)4PPh2 (dppb), Ph2P(CH2)3PPh2 (dppp), Ph2P(CH2)2PPh2 (dppe), trans-Ph2PCH=CHPPh2 (trans-dppe), Ph2PC(=CH2)PPh2 (vdpp) and Ph2PCH2PPh2 (dppm)] as 1:2 electrolytes. Reaction of 1a and 1c with diphosphines gave the dinuclear [C,N] cyclometallated compounds [{Pd[4-MeC6H3C(Me)=NN(H)C(=O)NH2](Cl)} 2(μ-L)] 8a, 9a, [{Pd[C6H4C(Et)=NN-(H)C(=O)NH2](Cl)} 2(μ-L)] 8c, 9c, [L=Ph2P(CH2)3PPh2 (dppp) and Ph2P(CH2)4PPh2 (dppb)]. The complexes were characterised by their elemental analysis (C,H,N) and by IR and 31P{1H} and 1H-NMR data, and [{Pd[C6H4C(Et)=NN(H)C(=O)NH2]} 2(μ-Ph2P(CH2)3PPh 2)][ClO4]2 (3c) was characterised crystallographically.
