Cobalt(II) carbonate is the inorganic compound with the formula CoCO3. This reddish paramagnetic solid is an intermediate in the hydrometallurgical purification of cobalt from its ores. It is an inorganic pigment, and a precursor to catalysts.[5] Cobalt(II) carbonate also occurs as the rare red/pink mineral spherocobaltite.[6]
At least two cobalt(II) carbonate-hydroxides are known: Co2(CO3)(OH)2 and Co6(CO3)2(OH)8·H2O.[10]
The moderately rare spherocobaltite is a natural form of cobalt carbonate, with good specimens coming especially from the Republic of Congo. "Cobaltocalcite" is a cobaltiferous calcite variety that is quite similar in habit to spherocobaltite.[6]
Safetyedit
Toxicity has rarely been observed. Animals, including humans, require trace amounts of cobalt, a component of vitamin B12.[5]
Referencesedit
^Haynes, W.M., ed. (2017). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press, Taylor & Francis Group. pp. 4–58. ISBN978-1-4987-5429-3.
^. Archived from the original on 2012-06-15. Retrieved 2012-05-17.
^ ab"Spherocobaltite: Spherocobaltite mineral information and data". www.mindat.org. Retrieved 7 August 2018.
^Pertlik, F. (1986). "Structures of hydrothermally synthesized cobalt(II) carbonate and nickel(II) carbonate". Acta Crystallographica Section C. 42: 4–5. doi:10.1107/S0108270186097524.
^Bryant, Burl E.; Fernelius, W. Conard (1957). "Cobalt(III) Acetylacetonate". Inorganic Syntheses. pp. 188–189. doi:10.1002/9780470132364.ch53. ISBN9780470132364.
^G.A. El-Shobaky, A.S. Ahmad, A.N. Al-Noaimi and H.G. El-Shobaky Journal of Thermal Analysis and Calorimetry 1996, Volume 46, Number 6 , pp.1801-1808. online abstract
^Bhojane, Prateek; Le Bail, Armel; Shirage, Parasharam M. (2019). "A Quarter of a Century After its Synthesis and with >200 Papers Based on its Use, 'Co(CO3)0.5(OH)0.11H2O′ Proves to be Co6(CO3)2(OH)8·H2O from Synchrotron Powder Diffraction Data". Acta Crystallographica Section C: Structural Chemistry. 75 (Pt 1): 61–64. doi:10.1107/S2053229618017734. PMID 30601132. S2CID 58657483.
External linksedit
Media related to Cobalt(II) carbonate at Wikimedia Commons
January 01, 1970
cobalt, carbonate, inorganic, compound, with, formula, coco3, this, reddish, paramagnetic, solid, intermediate, hydrometallurgical, purification, cobalt, from, ores, inorganic, pigment, precursor, catalysts, also, occurs, rare, pink, mineral, spherocobaltite, . Cobalt II carbonate is the inorganic compound with the formula CoCO3 This reddish paramagnetic solid is an intermediate in the hydrometallurgical purification of cobalt from its ores It is an inorganic pigment and a precursor to catalysts 5 Cobalt II carbonate also occurs as the rare red pink mineral spherocobaltite 6 Cobalt II carbonate Names IUPAC name Cobalt II carbonate Other names Cobaltous carbonate cobalt II salt Identifiers CAS Number 513 79 1 Y12602 23 2 cobalt carbonate hydroxide Y 3D model JSmol Interactive image ChemSpider 10123 N ECHA InfoCard 100 007 428 PubChem CID 10565 UNII 7H73A68FUV YW58TNI7T29 cobalt carbonate hydroxide Y CompTox Dashboard EPA DTXSID7052151 InChI InChI 1S CH2O3 Co c2 1 3 4 h H2 2 3 4 q 2 p 2 NKey ZOTKGJBKKKVBJZ UHFFFAOYSA L NInChI 1 CH2O3 Co c2 1 3 4 h H2 2 3 4 q 2 p 2Key ZOTKGJBKKKVBJZ NUQVWONBAB SMILES C O O O Co 2 Properties Chemical formula CoCO3 Molar mass 118 941 g mol Appearance red pink solid Density 4 13 g cm3 Melting point 427 C 801 F 700 K 3 decomposes before melting to cobalt II oxide anhydrous 140 C 284 F 413 K decomposes hexahydrate Solubility in water 0 000142 g 100 mL 20 C 1 Solubility product Ksp 1 0 10 10 2 Solubility soluble in acid negligible in alcohol methyl acetate insoluble in ethanol Refractive index nD 1 855 Structure Crystal structure Rhombohedral anhydrous Trigonal hexahydrate Thermochemistry Std molarentropy S 298 79 9 J mol K 3 Std enthalpy offormation DfH 298 722 6 kJ mol 3 Gibbs free energy DfG 651 kJ mol 3 Hazards GHS labelling Pictograms 4 Signal word Warning Hazard statements H302 H315 H317 H319 H335 H351 4 Precautionary statements P261 P280 P305 P351 P338 4 NFPA 704 fire diamond 200 Lethal dose or concentration LD LC LD50 median dose 640 mg kg oral rats Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa N verify what is Y N Infobox references Contents 1 Preparation and structure 2 Reactions 3 Uses 4 Related compounds 5 Safety 6 References 7 External linksPreparation and structure editIt is prepared by combining solutions cobaltous sulfate and sodium bicarbonate CoSO4 2 NaHCO3 CoCO3 Na2SO4 H2O CO2 This reaction is used in the precipitation of cobalt from an extract of its roasted ores 5 CoCO3 adopts a structure like calcite consisting of cobalt in an octahedral coordination geometry 7 Reactions editLike most transition metal carbonates cobalt carbonate is insoluble in water but is readily attacked by mineral acids CoCO3 2 HCl 5 H2O Co H2O 6 Cl2 CO2 It is used to prepare many coordination complexes The reaction of cobalt II carbonate and acetylacetone in the presence of hydrogen peroxide gives tris acetylacetonato cobalt III 8 Heating the carbonate proceeds in a typical way for calcining except that the product becomes partially oxidized 6 CoCO3 O2 2 Co3O4 6 CO2 The resulting Co3O4 converts reversibly to CoO at high temperatures 9 Uses editCobalt carbonate is a precursor to cobalt carbonyl and various cobalt salts It is a component of dietary supplements since cobalt is an essential element It is a precursor to blue pottery glazes famously in the case of Delftware Related compounds editAt least two cobalt II carbonate hydroxides are known Co2 CO3 OH 2 and Co6 CO3 2 OH 8 H2O 10 The moderately rare spherocobaltite is a natural form of cobalt carbonate with good specimens coming especially from the Republic of Congo Cobaltocalcite is a cobaltiferous calcite variety that is quite similar in habit to spherocobaltite 6 Safety editToxicity has rarely been observed Animals including humans require trace amounts of cobalt a component of vitamin B12 5 References edit Haynes W M ed 2017 CRC Handbook of Chemistry and Physics 97th ed CRC Press Taylor amp Francis Group pp 4 58 ISBN 978 1 4987 5429 3 Solubility product constants Archived from the original on 2012 06 15 Retrieved 2012 05 17 a b c d Cobalt II carbonate a b c Sigma Aldrich Co Cobalt II carbonate Retrieved on 2014 05 06 a b c Donaldson John Dallas Beyersmann Detmar 2005 Cobalt and Cobalt Compounds Ullmann s Encyclopedia of Industrial Chemistry Weinheim Wiley VCH doi 10 1002 14356007 a07 281 pub2 ISBN 978 3527306732 a b Spherocobaltite Spherocobaltite mineral information and data www mindat org Retrieved 7 August 2018 Pertlik F 1986 Structures of hydrothermally synthesized cobalt II carbonate and nickel II carbonate Acta Crystallographica Section C 42 4 5 doi 10 1107 S0108270186097524 Bryant Burl E Fernelius W Conard 1957 Cobalt III Acetylacetonate Inorganic Syntheses pp 188 189 doi 10 1002 9780470132364 ch53 ISBN 9780470132364 G A El Shobaky A S Ahmad A N Al Noaimi and H G El Shobaky Journal of Thermal Analysis and Calorimetry 1996 Volume 46 Number 6 pp 1801 1808 online abstract Bhojane Prateek Le Bail Armel Shirage Parasharam M 2019 A Quarter of a Century After its Synthesis and with gt 200 Papers Based on its Use Co CO3 0 5 OH 0 11H2O Proves to be Co6 CO3 2 OH 8 H2O from Synchrotron Powder Diffraction Data Acta Crystallographica Section C Structural Chemistry 75 Pt 1 61 64 doi 10 1107 S2053229618017734 PMID 30601132 S2CID 58657483 External links edit nbsp Media related to Cobalt II carbonate at Wikimedia Commons Retrieved from https en wikipedia org w index php title Cobalt II carbonate amp oldid 1215229048, wikipedia, wiki, book, books, library,
