Hydrolytic polymerization of rhodium(III). Characterization of various forms of a trinuclear aqua ion

Spiccia, Leone; Aramini, James M.; Crimp, Stephen J.; Drljaca, Alexander; Lawrenz, E T; Tedesco, Vanda; Vogel, Hans J.

doi:10.1039/a704694d

Cited by 27 publications

(20 citation statements)

References 24 publications

(32 reference statements)

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“…The trimer is isostructural with a cyclic form of the analogous Rh III trimer proposed from solution studies. [27] The structures of 2 and 3 have a large number of disordered water molecules, some of which hydrogen bond to the cations and anions. Charge balance can be rationalised by protonation of sulfonate groups.…”

Section: Resultsmentioning

confidence: 99%

Self-Assembled Superanions: Ionic Capsules Stabilized by Polynuclear Chromium(III) Aqua Cations

Drljaca

Hardie

Raston

et al. 1999

Chemistry - A European Journal

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, which are triply, doubly or singly protonated, respectively. The superanions possess a central sodium ion bound by a crown ether and two trans water molecules; this moiety is further shrouded by two calixarenes. The di-and trinuclear cations can be leached from the solid complexes by treatment with aqueous HClO 4 , and the complex containing the tetranuclear species is selectively formed from a solution containing a mixture of the various polynuclear cations.

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Section: Resultsmentioning

confidence: 99%

Self-Assembled Superanions: Ionic Capsules Stabilized by Polynuclear Chromium(III) Aqua Cations

Drljaca

Hardie

Raston

et al. 1999

Chemistry - A European Journal

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“…The PHIP effect may lead to additional enhancements, facilitating the acquisition and observation of even small amounts of 32 Even larger ranges are known, e.g. for 59 Co and 195 Pt.…”

Section: Acquisition Methodsmentioning

confidence: 97%

¹⁰³Rh NMR spectroscopy and its application to rhodium chemistry

Ernsting

Gaemers

Elsevier

2004

Magnetic Reson in Chemistry

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Rhodium is used for a number of large processes that rely on homogeneous rhodium-catalyzed reactions, for instance rhodium-catalyzed hydroformylation of alkenes, carbonylation of methanol to acetic acid and hydrodesulfurization of thiophene derivatives (in crude oil). Many laboratory applications in organometallic chemistry and catalysis involve organorhodium chemistry and a wealth of rhodium coordination compounds is known. For these and other areas, 103Rh NMR spectroscopy appears to be a very useful analytical tool. In this review, most of the literature concerning 103Rh NMR spectroscopy published from 1989 up to and including 2003 has been covered. After an introduction to several experimental methods for the detection of the insensitive 103Rh nucleus, a discussion of factors affecting the transition metal chemical shift is given. Computational aspects and calculations of chemical shifts are also briefly addressed. Next, the application of 103Rh NMR in coordination and organometallic chemistry is elaborated in more detail by highlighting recent developments in measurement and interpretation of 103Rh NMR data, in relation to rhodium-assisted reactions and homogeneous catalysis. The dependence of the 103Rh chemical shift on the ligands at rhodium in the first coordination sphere, on the complex geometry, oxidation state, temperature, solvent and concentration is treated. Several classes of compounds and special cases such as chiral rhodium compounds are reviewed. Finally, a section on scalar coupling to rhodium is provided.

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“…Because the acid-hydroxide solid dissolves by acidification, and because it excludes the electrolytes, dissolution in appropriate proportions of suitable acid yields clean solutions of each oligomer. Active hydroxides have been prepared from the monomers, dimers and trimers of Cr(III) and Rh(III) and characterized in some detail (Spiccia and Marty, 1986;Spiccia et al, 1988Spiccia et al, , 1987Spiccia et al, , 1997Spiccia, 2004).…”

Section: Methods Of Separation Isolation and Crystallizationmentioning

confidence: 99%

Synthesis of experimental models for molecular inorganic geochemistry—A review with examples

Spiccia

Casey

2007

Geochimica et Cosmochimica Acta

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Hydrolytic polymerization of rhodium(III). Characterization of various forms of a trinuclear aqua ion

Cited by 27 publications

References 24 publications

Self-Assembled Superanions: Ionic Capsules Stabilized by Polynuclear Chromium(III) Aqua Cations

Self-Assembled Superanions: Ionic Capsules Stabilized by Polynuclear Chromium(III) Aqua Cations

¹⁰³Rh NMR spectroscopy and its application to rhodium chemistry

Synthesis of experimental models for molecular inorganic geochemistry—A review with examples

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Hydrolytic polymerization of rhodium(III). Characterization of various forms of a trinuclear aqua ion

Cited by 27 publications

References 24 publications

Self-Assembled Superanions: Ionic Capsules Stabilized by Polynuclear Chromium(III) Aqua Cations

Self-Assembled Superanions: Ionic Capsules Stabilized by Polynuclear Chromium(III) Aqua Cations

103Rh NMR spectroscopy and its application to rhodium chemistry

Synthesis of experimental models for molecular inorganic geochemistry—A review with examples

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¹⁰³Rh NMR spectroscopy and its application to rhodium chemistry