Rhodium (II) acetate

Structural formula
General
Surname	Rhodium (II) acetate
other names	Dirhodium tetraacetate; Tetrakis (acetato) dirhodium (II);
Molecular formula	Rh 2 (OOCCH 3 ) 4
Brief description	odorless green-black solid
External identifiers / databases
EC number	240-084-8
ECHA InfoCard	100.036.425
PubChem	152122
Wikidata	Q3604267
properties
Molar mass	441.99 g mol −1
Physical state	firmly
Melting point	205 ° C
solubility	soluble in water; slightly soluble in ethanol; soluble in acetone; practically insoluble in 1,2-dichloroethane;
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Rhodium (II) acetate is a chemical compound of rhodium from the group of acetates .

Extraction and presentation

Rhodium (II) acetate is usually made by heating rhodium (III) chloride hydrate in acetic acid or in methanol with sodium acetate .

properties

Rhodium (II) acetate

Rhodium (II) acetate is an odorless green-black solid that is soluble in water. It has a dimeric structure. The dihydrate has a crystal structure with the space group C 2 / c (space group no. 15) . Template: room group / 15

use

Rhodium (II) acetate is used as a catalyst in organic chemistry . It forms with diazo that an adjacent carbonyl possess carbenes . Cyclopropanes , among other things, can be prepared from the carbenes . Rhodium carbenes can also be used for the production of ylides and for insertion reactions . It is also used in the functionalization of fullerenes into polymers and is an efficient catalyst for hydrogen transfer from 2-propanol to cyclohexanone and other unsaturated compounds.

Individual evidence

↑ ^a ^b ^c ^d Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . CRC Press, 2016, ISBN 978-1-4398-1462-8 , pp. 495 ( limited preview in Google Book search).
↑ ^a ^b ^c ^d ^e ^f data sheet Rhodium (II) acetate, dimer, Premion®, 99.99% (metals basis), Rh 46.2% min from AlfaAesar, accessed on October 10, 2017 ( PDF )(JavaScript required) .
^ ^A ^b André B. Charette: Handbook of Reagents for Organic Synthesis Reagents for Heteroarenes Synthesis . John Wiley & Sons, 2017, ISBN 978-1-119-95229-9 , pp. 248 ( limited preview in Google Book search).
↑ ^a ^b Data sheet Rhodium (II) acetate dimer, 99.99% trace metals basis from Sigma-Aldrich , accessed on October 10, 2017 ( PDF ).
↑ Tetrakis (Acetato) Dirhodium (II) and Similar Carboxylato Compounds. In: researchgate.net. ResearchGate, accessed October 10, 2017 .
^ Susan A. Johnson, HR Hunt, HM Neumann: Preparation and Properties of Anhydrous Rhodium- (II) Acetate and Some Adducts Thereof. In: Inorganic Chemistry. 2, 1963, p. 960, doi : 10.1021 / ic50009a020 .
↑ The crystal and molecular structures of dichromium tetraacetate dihydrate and dirhodium tetraacetate dihydrate . In: Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry . tape 27 , no. 8 , 1971, ISSN 0567-7408 , doi : 10.1107 / S0567740871004527 ( iucr.org ).
^ Tao Ye, M. Anthony McKervey: Organic Synthesis with α-Diazocarbonyl Compounds. In: Chem. Rev. 94, 1994, pp. 1091-1160, doi: 10.1021 / cr00028a010 .
^ P. Andrew Evans: Modern Rhodium-Catalyzed Organic Reactions . John Wiley & Sons, 2006, ISBN 978-3-527-60409-8 , pp. 438 ( limited preview in Google Book search).

[Dale_L._Perry-1] Dale L. Perry: Handbook of Inorganic Compounds, Second Edition . CRC Press, 2016, ISBN 978-1-4398-1462-8 , pp. 495 ( limited preview in Google Book search).

[Alfa-2] ↑ ^a ^b ^c ^d ^e ^f data sheet Rhodium (II) acetate, dimer, Premion®, 99.99% (metals basis), Rh 46.2% min from AlfaAesar, accessed on October 10, 2017 ( PDF )(JavaScript required) .

[André_B._Charette-3] A ^b André B. Charette: Handbook of Reagents for Organic Synthesis Reagents for Heteroarenes Synthesis . John Wiley & Sons, 2017, ISBN 978-1-119-95229-9 , pp. 248 ( limited preview in Google Book search).

[Sigma-4] Data sheet Rhodium (II) acetate dimer, 99.99% trace metals basis from Sigma-Aldrich , accessed on October 10, 2017 ( PDF ).

[5] Tetrakis (Acetato) Dirhodium (II) and Similar Carboxylato Compounds. In: researchgate.net. ResearchGate, accessed October 10, 2017 .

[DOI10.1021/ic50009a020-6] Susan A. Johnson, HR Hunt, HM Neumann: Preparation and Properties of Anhydrous Rhodium- (II) Acetate and Some Adducts Thereof. In: Inorganic Chemistry. 2, 1963, p. 960, doi : 10.1021 / ic50009a020 .

[7] The crystal and molecular structures of dichromium tetraacetate dihydrate and dirhodium tetraacetate dihydrate . In: Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry . tape 27 , no. 8 , 1971, ISSN 0567-7408 , doi : 10.1107 / S0567740871004527 ( iucr.org ).

[8] Tao Ye, M. Anthony McKervey: Organic Synthesis with α-Diazocarbonyl Compounds. In: Chem. Rev. 94, 1994, pp. 1091-1160, doi: 10.1021 / cr00028a010 .

[P._Andrew_Evans-9] P. Andrew Evans: Modern Rhodium-Catalyzed Organic Reactions . John Wiley & Sons, 2006, ISBN 978-3-527-60409-8 , pp. 438 ( limited preview in Google Book search).