Palladium iv

PdF4 is the only stable palladium(IV) halide [18] (testimony to the oxidizing nature of palladium(IV)) and is a very moisture-sensitive diamagnetic red solid the structure is based on Pd6F24 hexameric units linked three-dimensionally. It has octahedrally coordinated palladium with two terminal (cis) fluorines and four bridging ones. Despite the absence of other tetra-halides, the complete series of PdX - exist (cf. Ir). 

Compared with the plethora of platinum(IV) compounds, the palladium(IV) complexes are as yet relatively few in number [10, 11]. When isolable, they tend to resemble the corresponding platinum compounds. 

Just as many palladium(IV) complexes are produced by halogen oxidation of the corresponding palladium(II) complex, so the palladium(IV) compounds tend to decompose by the reverse process, usually on heating ... 

As reported in Scheme 1 the process involves a series of steps. The alkylpalladium species 1 forms through oxidative addition of the aromatic iodide to palladium(O) followed by noibomene insertion (4-7). The ready generation of complex 2 (8-11) from 1 is due to the unfavourable stereochemistry preventing P-hydrogen elimination from 1 (12). Complex 2 further reacts with alkyl halides RX to form palladium(IV) complex 3 (13-15). Migration of the R group to the... 

Ans. (a) Iron(II) bromide and iron(III) bromide, FcBr, and FeBr, (b) palladium ID bromide and palladium(IV) bromide, PdBr, and PdBr4 and (c) mercuryd) bromide and mereury(II) bromide. Hg.Br, and HgBr,. (The charges on the cations can be obtained from Table 6-4.)... 

Catellani s group have exploited the use of palladacycles for the synthesis of a host of interesting molecules. Here, palladium-containing intermediates, which cannot /3-eliminate easily, are used to perform further annulations. Palladium(iv) species are involved (Equation (151)).128... 

Dicarbonyl(phenanthroline /V-oxidc)rhodium(I) perchlorate, 3626 Dicarbonylpyrazinerhodium(I) perchlorate, 2147 [Pg.59]

Manganese trichloride oxide, 4141 Mercury(I) oxide , 4613 Mercury(II) oxide, 4605 Molybdenum(IV) oxide, 4716 Molybdenum(VI) oxide, 4717 Nickel(II) oxide, 4821 Nickel(III) oxide, 4823 Nickel(IV) oxide, 4822 Niobium(V) oxide, 4818 Osmium(IV) oxide, 4833 Osmium(VIII) oxide, 4858 Palladium(II) oxide, 4825 Palladium(III) oxide, 4848 Palladium(IV) oxide, 4835... 

Palladium(II) oxide, 4825 Palladium(IV) oxide, 4835 Perchloric acid, 3998 Periodic acid, 4425 Permanganic acid, 4434 Peroxodisulfuric acid, 4482 Peroxodisulfuryl difluoride, 4328 Peroxomonosulfuric acid, 4481 Peroxytrifluoroacetic acid, 0666 Platinum hexafluoride, 4371 Platinum(IV) oxide, 4836 Plutonium hexafluoride, 4372 Potassium bromate, 0255 Potassium chlorate, 4017 Potassium dichromate, 4248 Potassium iodate, 4619 Potassium nitrate, 4650 Potassium nitrite, 4649 Potassium perchlorate, 4018 Potassium periodate, 4620 Potassium permanganate, 4647 Rhenium hexafluoride, 4373 Rubidium fluoroxysulfate, 4309 Ruthenium(VIII) oxide, 4862 Selenium dioxide, 4838 Selenium dioxide, 4838 Silver permanganate, 0021 Sodium chlorate, 4039 Sodium chlorite, 4038 Sodium dichromate, 4250 Sodium iodate, 4624 Sodium nitrate, 4721 Sodium nitrite, 4720... 

Palladium(iv).—Reaction of quinazoline-2,4-dithione [LH(51)] with PdC in acetone-butanol solvent has yielded the red-brown [PdL2Cl2]. I.r. studies support bidentate co-ordination of the ligand through both and N donors. 

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