Chemistry

Bowieite – a rhodium-iridium-platinum sulfide mineral

Bowieite – a rhodium-iridium-platinum sulfide mineral

Bowieite is a rhodium-iridium-platinum sulfide mineral (Rh, Ir, Pt)2S3, found in platinum-alloy nuggets from Goodnews Bay, Alaska. It is a rhodium-iridium-platinum sulfide mineral. After gold, Bowieite is one of the most expensive metals. Most of this expense is driven by the fact that it’s.....

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Wilkinson’s Catalyst

Wilkinson’s Catalyst

Wilkinson’s Catalyst Wilkinson’s catalyst is a pre-catalyst that is converted to an active form by losing one triphenylphosphine ligand before entering the catalytic cycle. It is the common name for chloridotris (triphenylphosphine)rhodium(I), a coordination complex of rhodium with th.....

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Carbene (Definition, Structure, Uses)

Carbene (Definition, Structure, Uses)

In chemistry, a carbene (H2C) any member of a class of highly reactive molecules containing divalent atoms of carbon is a carbon atom that uses only two of the four bonds they are able to form with other atoms. The general formula is R-(C:)-R ‘or R=C: where substituents or hydrogen atoms ar.....

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Vanadium carbide – a hard refractory ceramic material

Vanadium carbide – a hard refractory ceramic material

Vanadium carbide is the inorganic compound with the formula VC. It is an extremely hard refractory ceramic material. With a hardness of 9-9.5 Mohs, it is possibly the hardest metal-carbide known. Vanadium carbide (VC) coating technology provides a superior protective coating for steel surfaces an.....

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Ytterbium dirhodium disilicide – a heavy fermion solid state compound

Ytterbium dirhodium disilicide – a heavy fermion solid state compound

Ytterbium is a chemical element, a rare-earth metal of the lanthanide series of the periodic table. Ytterbium dirhodium disilicide (YbRh2Si2) is a heavy-fermion solid-state compound of ytterbium, rhodium, and silicon. It slowly oxidizes in air, forming YbO3; the metal is readily dissolved in dilu.....

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Rhodium (III) Oxide – an inorganic compound

Rhodium (III) Oxide – an inorganic compound

Rhodium(III) oxide (or Rhodium sesquioxide) is the inorganic compound with the formula Rh2O3. It is a dark grey odorless powder, insoluble in water, with catalytic properties. Oxide compounds are not conductive to electricity. It is a gray solid that is insoluble in ordinary solvents. Rhodium Oxi.....

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Isomerism (Definition, Types)

Isomerism (Definition, Types)

Isomerism is a process in which two or more compounds have the same chemical formula, but various structural formulas and distinct properties are available. Chemical compounds that have similar chemical formulas but vary in properties are called isomers and the arrangement of atoms in the molecul.....

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Rhodium (III) sulfide – an inorganic compound

Rhodium (III) sulfide – an inorganic compound

Rhodium (III) sulfide is the inorganic compound with the formula Rh2S3. It is a moderately water and acid soluble Rhodium source for uses compatible with sulfates. It is an insoluble black solid, prepared by heating a mixture of elemental rhodium and sulfur. It is a red crystal that forms a hydra.....

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Rhodium Acetylacetonate – a coordination complex

Rhodium Acetylacetonate – a coordination complex

Rhodium acetylacetonate is the coordination complex with the formula Rh(O2C5H7)3, which is sometimes known as Rh(acac)3. It is a Rhodium source that is soluble in organic solvents. The molecule has D3-symmetry. Rhodium acetylacetonate, as the organic solvent-soluble source of rhodium metal ions, .....

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Asparagine (Structure, Function, Properties)

Asparagine (Structure, Function, Properties)

Asparagine (Asn or N symbol), an alpha-amino acid closely associated with aspartic acid and an essential protein component. It comprises an alpha-amino group (which under biological conditions is in the protonated-NH+3 form), an alpha-carboxylic acid group (which under biological conditions is in.....

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Rhodium (III) chloride – an inorganic compound

Rhodium (III) chloride – an inorganic compound

Rhodium (III) chloride usually refers to hydrated rhodium trichloride, a molecular compound with the formula RhCl(H2O)3. It refers to inorganic compounds with the formula RhCl3(H2O)n, where n varies from 0 to 3. These are diamagnetic solids featuring octahedral Rh(III) centers. Depending on the v.....

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Rhodium (II) acetate – a chemical compound

Rhodium (II) acetate – a chemical compound

Rhodium (II) acetate Rhodium is a member of the platinum group of metals. It has a higher melting point than platinum, but a lower density. Rhodium (II) acetate is the chemical compound with the formula Rh2(AcO)4, where AcO− is the acetate ion (CH3CO−2). This dark green powder is slightly sol.....

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