Rhodium Bars

Investment Sales Prices
High Purity Rh Bars
CAS 7440-16-6

Product	Product Code	Order or Specifications
(3N) 99.9% Rhodium Bars	RH-M-03-BBR

American Elements' AE Bullion™ group mints certified high purity Rhodium Bars from laboratory certified engineered materials with properties applicable to chemical vapor deposition (CVD) for thin film and laboratory standard impurity levels for short and long term physical possession and to allow for exposure and controlled risk to industrial demand fluctuations reflected in the global rhodium price.Besides rhodium bars, rhodium coins and rhodium Ingots may be purchased by funds, currency reserves, exchange-traded funds (ETFs), private investors, collectors and hobbyists to take direct physical title and possession of the metal with risk exposure from shortages or chemical/physical technology changes, such as in solar energy, and fuel cell developments, equivalent to movements in the industrial application price of Rhodium. American Elements offers bonded short and long term warehouse inventory services for AE Bullion™ coins to investors, funds and collectors who do not wish to take physical custody of the metal or lack secure storage or warehouse capabilities. The lowest possible bar unit price to Rhodium melt value ratio is maintained through state of the art mint and die systems and analytically certified blanks (planchet or flan) refined and pressed to exacting purity and weight. We also produce Rhodium as rod, pellets, powder, pieces, disc, granules, and wire, as nanoparticles and in compound forms, such as oxide. Rhodium Bars may be purchased in bulk or small quantity. Portfolios of different elemental metal bars or coins may also be structured and purchased from the AE Bullion™ group allowing for strategic risk allocation and indexing across a basket of metals.

Rhodium is a Block D, Group 9, Period 5 element. The number of electrons in each of Rhodium's shells is 2, 8, 18, 16, 1 and its electronic configuration is [Kr] 4d⁸ 5s¹. In its elemental form rhodium's CAS number is 7440-16-6. The rhodium atom has a radius of 134.5.pm and its Van der Waals radius is 200.pm. Rhodium is not toxic. Rhodium is a member of the platinum group of metals. It has a higher melting point than platinum, but a lower density. It is alloyed with platinum and palladium in electrodes for spark plugs, advanced laboratory equipment and in thermocouples. Rhodium compounds also have catalytic uses in automotive catalytic converters. Rhodium is used as a plating metal in jewelry production to enhance the whiteness of white gold. National University of Singapore researchers recently developed a Rhodium-Iron catalyst that makes hydrogen generation from ethanol safer and easier to perform. The process may lead to the design of simpler and cheaper on-board reactors in automobiles. Rhodium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Rhodium is found in ores mixed with other metals such as palladium, silver, platinum, and gold. Rhodium was first discovered by William Wollaston in 1803. The name Rhodium originates from the Greek word 'Rhodon,' which means rose. See Rhodium research below.

HEALTH, SAFETY & TRANSPORTATION INFORMATION
Material Safety Data Sheet	MSDS
Signal Word	Danger
Hazard Statements	H228
Hazard Codes	N/A
Risk Codes	N/A
Safety Precautions	N/A
RTECS Number	VI9069000
Transport Information	N/A
WGK Germany	3
Globally Harmonized System of Classification and Labelling (GHS)

Production Catalog Available in 36 Countries & Languages

Recent Research & Development for Rhodium

• Rhodium(i)-catalyzed N-CN bond cleavage: intramolecular ß-cyanation of styrenes. Wang R, Falck JR. Chem Commun (Camb). 2013 Jun 14.
• Rhodium and Iridium Complexes with a New Scorpionate Phosphane Ligand. Serrano AL, Casado MA, López JA, Tejel C. Inorg Chem. 2013 Jun 13.
• Rhodium(III)-Catalyzed Intermolecular Direct Amidation of Aldehyde C-H Bonds with N-Chloroamines at Room Temperature. Zhou B, Du J, Yang Y, Li Y. Org Lett. 2013 Jun 11.
• Studies of Asymmetric Styrene Cyclopropanation with a Rhodium(II) Metallopeptide Catalyst Developed with a High-Throughput Screen. Sambasivan R, Ball ZT. Chirality. 2013 Jun 8. doi: 10.1002/chir.22144.
• Chlorido(dimethyl 2,2'-bipyridine-4,4'-dicarboxylate-?(2)N,N')(?(5)-pentamethylcyclopentadienyl)rhodium(III) chloride 1-hydroxypyrrolidine-2,5-dione disolvate. Sivanesan D, Kim HM, Sungho Y. Acta Crystallogr C. 2013 Jun 15;69(Pt 6):584-7. doi: 10.1107/S0108270113009633.
• Synthesis of a 2(1H)-pyridone library via rhodium catalyzed formation of isomunchones. De S, Chen L, Zhang S, Gilbertson SR. ACS Comb Sci. 2013 Jun 6.
• Catalytic Formation of Ketones from Unactivated Esters through Rhodium Chelation-Assisted C-O Bond Activation. Wang J, Zuo S, Chen W, Zhang X, Tan K, Tian Y, Wang J. J Org Chem. 2013 Jun 10.
• Rhodium-Catalyzed Highly Regioselective Hydroaminomethylation of Styrenes with Tetraphosphorus Ligands. Li S, Huang K, Zhang J, Wu W, Zhang X. Org Lett. 2013 Jun 3.
• Alkyl group versus hydrogen atom transfer from metal alkyls to macrocyclic rhodium complexes. Carraher JM, Bakac A. Chem Commun (Camb). 2013 Jun 11;49(54):6099-101. doi: 10.1039/c3cc43472a.
• Aqua-bis-(4-methyl-benzene-sulfonato-?O)(?(5)-penta-methyl-cyclo-penta-dien-yl)rhodium(III) monohydrate. Roy CP, Boyer PM, Merola JS. Acta Crystallogr Sect E Struct Rep Online. 2013 Apr 13;69(Pt 5):m259-60. doi: 10.1107/S160053681300860X.
• Block Copolymer Lithography of Rhodium Nanoparticles for High Temperature Electrocatalysis. Boyd DA, Hao Y, Li C, Goodwin DG, Haile SM. ACS Nano. 2013 Jun 11.
• Generation of Rhodium(I) Carbenes from Ynamides and Their Reactions with Alkynes and Alkenes. Liu R, Winston-McPherson GN, Yang ZY, Zhou X, Song W, Guzei IA, Xu X, Tang W. J Am Chem Soc. 2013 May 23.
• Synthesis of Triphenylene Derivatives by Rhodium-Catalyzed [2 + 2 + 2] Cycloaddition: Application to the Synthesis of Highly Fluorescent Triphenylene-Based Long Ladder Molecules. Murayama K, Sawada Y, Noguchi K, Tanaka K. J Org Chem. 2013 Jun 4.
• Rhodium(I)-Catalyzed Enantioselective Hydrogenation of Substituted Acrylic Acids with Sterically Similar ß,ß-Diaryls. Li Y, Dong K, Wang Z, Ding K. Angew Chem Int Ed Engl. 2013 May 16. doi: 10.1002/anie.201302349.
• Rhodium-catalyzed decarbonylative C-h arylation of 2-aryloxybenzoic acids leading to dibenzofuran derivatives. Maetani S, Fukuyama T, Ryu I. Org Lett. 2013 Jun 7;15(11):2754-7. doi: 10.1021/ol4010905.
• Functionalized cyclopentadienyl rhodium(iii) bipyridine complexes: synthesis, characterization, and catalytic application in hydrogenation of ketones. Wang WH, Suna Y, Himeda Y, Muckerman JT, Fujita E. Dalton Trans. 2013 Jul 14;42(26):9628-36. doi: 10.1039/c3dt50445j.
• Rhodium-Catalyzed ortho Acylation of Aromatic Carboxylic Acids. Mamone P, Danoun G, Gooßen LJ. Angew Chem Int Ed Engl. 2013 May 10. doi: 10.1002/anie.201301328.
• Rhodium(III)-Catalyzed Synthesis of Cyclopenta[b]pyrroles from 1,2-Diketones, 2-Aminopyridine, and Alkynes. Du J, Zhou B, Yang Y, Li Y. Chem Asian J. 2013 May 10. doi: 10.1002/asia.201300341.
• Rhodium(III)-Catalyzed Azacycle-Directed Intermolecular Insertion of Arene C-H Bonds into a-Diazocarbonyl Compounds. Yu X, Yu S, Xiao J, Wan B, Li X. J Org Chem. 2013 Jun 7;78(11):5444-52. doi: 10.1021/jo400572h.
• Asymmetric synthesis of gem-diaryl substituted cyclic sulfamidates and sulfamides by rhodium-catalyzed arylation of cyclic ketimines. Nishimura T, Ebe Y, Fujimoto H, Hayashi T. Chem Commun (Camb). 2013 Jun 18;49(48):5504-6. doi: 10.1039/c3cc42071j.

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