Far infrared spectra of palladium compounds—I. The influence of ligands upon the palladium chloride stretching frequency

Durig, J. R.; Layton, Robert B.; Sink, D.W.; Mitchell, B.R.

doi:10.1016/0371-1951(65)80046-7

Cited by 167 publications

(53 citation statements)

References 9 publications

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“…The EDX profile of catalyst is presented in Figure 2. (orthometallation), 40 and 455 cm -1 (νPd-N) 41 also support the formation of palladium(II) complex. The UV-Vis spectra provided further evidence for the presence of palladium on polymer support.…”

Section: Resultsmentioning

confidence: 98%

Heterogeneously catalyzed phosphine-free heck cross-coupling reaction of aryl halides with reusable palladium(II) schiff base complex

Islam¹,

Mondal²,

Tuhina³

et al. 2011

J. Braz. Chem. Soc.

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O acoplamento entre haletos de arila e terminais alceno (reação de Heck) foi investigado na presença de catalisadores de paládio (II) suportados em poliestirenos contendo bases de Schiff. O catalisador é estável frente ao ar e umidade, e tem atividade catalítica significativa nas reações de acoplamento cruzado de Heck sob condições normais. Vários haletos de arila e alcenos terminais foram facilmente acoplados na presença de ar, fornecendo os correspondentes produtos de acoplamaneto cruzado, em ótimos rendimentos. O catalisador é facilmente recuperado quantitativamente por filtração simples e reutilizado por até sete ciclos sem perda de atividade.The coupling between aryl halides with terminal alkenes (Heck reaction) has been investigated in the presence of a polystyrene-supported Schiff base palladium(II) catalyst. The present catalyst is air and moisture-stable and has significant catalytic activity in Heck cross-coupling reactions under operating conditions. Various aryl halides and terminal alkenes were coupled smoothly under air, to afford the corresponding cross-coupled products in excellent yields. Furthermore, the catalyst can be easily recovered quantitatively by simple filtration and reused up to seven cycles without losing its activity.

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Section: Resultsmentioning

confidence: 98%

Heterogeneously catalyzed phosphine-free heck cross-coupling reaction of aryl halides with reusable palladium(II) schiff base complex

Islam¹,

Mondal²,

Tuhina³

et al. 2011

J. Braz. Chem. Soc.

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“…The v(Pd-C1) frequencies in 7a, 7b are assigned to the A , (sym) and B, (asym) vibrations of a cis-coordinated PdCl, group of symmetry C,,, by comparison with the spectra of cis-PdCl,(py), (23), cis-PdCl,(im), (24), and cis-PdCl,(Me,pzH), (25), and the broad lines found in the spectra of 8n, 86, and 9 are also more in accord with this type of coordination than with a trans-configuration, for which a single sharp line would be expected. Coordination at the nitrogen atoms of the phosphazene ring of 7a is ruled out by the magnetic equivalence of the two Me,pz groups.…”

Section: Resultsmentioning

confidence: 99%

1-Pyrazolyl phosphazenes and their complexes with palladium(II) chloride and platinum(II) chloride

Gallicano¹,

Paddock²

1982

Can. J. Chem.

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KEITH D. GALLICANO and NORMAN L. PADDOCK. Can. J. Chem. 60.521 (1982). The chlorophosphazenes (NPCI,),+, and the phenylchlorophosphazenes gern-N3P3Ph4CI2 and gem-N3P3Ph2C14 react with pyrazole, 3-methylpyrazole, and 3,5-dimethylpyrazole to give (NPpz,),-,, [NP(Mepz),],+,, [NP(Me,pz),],,,, N,P,Ph,(Mepz),, N3P,Ph,(Me2pz),, and N3P,Ph2(Me2pz),. Infrared and nmr spectroscopy show the pyrazolyl group to be an electron-withdraw~ng substituent on the phosphazene ring. resembling a halogen rather than an amino-group. The pyrazolyl group also acts as a donor through its pyridinic nitrogen atom, both intramolecularly and in the formation of the complexes gem-N,P3Ph4(Me2pz),~PdCl2, gern-N,P3Ph2(Me2pz)4~PdC12, N,P,(Me2pz),.2PdC12. N,P,(Me2pz),~2PtC1,, and N3P3(Me,pz),.3PdC1,. No bonding between the metal and a nitrtogen atom in the ring was detected.

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“…The far-IR spectra of the complex shows a strong band at 358 cm −1 , consistent with trans disposition of the two chlorides. [45] In general, two bands are expected for a cis-isomer. [45] …”

Section: Synthesis and Characterization Of {Pdcl 2 -[η 1 -(P)-pph 2 (mentioning

confidence: 99%

Iron(0), rhodium(I) and palladium(II) complexes with p‐(N,N‐dimethylaminophenyl) diphenylphosphine and the application of the palladium complex as a catalyst for the Suzuki–Miyaura cross‐coupling reaction

Sarmah

Borah

Das

2011

Applied Organom Chemis

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Far infrared spectra of palladium compounds—I. The influence of ligands upon the palladium chloride stretching frequency

Cited by 167 publications

References 9 publications

Heterogeneously catalyzed phosphine-free heck cross-coupling reaction of aryl halides with reusable palladium(II) schiff base complex

Heterogeneously catalyzed phosphine-free heck cross-coupling reaction of aryl halides with reusable palladium(II) schiff base complex

1-Pyrazolyl phosphazenes and their complexes with palladium(II) chloride and platinum(II) chloride

Iron(0), rhodium(I) and palladium(II) complexes with p‐(N,N‐dimethylaminophenyl) diphenylphosphine and the application of the palladium complex as a catalyst for the Suzuki–Miyaura cross‐coupling reaction

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