{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T14:33:36Z","timestamp":1787063616357,"version":"build-2736575974"},"reference-count":21,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2019,1,10]],"date-time":"2019-01-10T00:00:00Z","timestamp":1547078400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Thermal decomposition of [Co(NH3)6][Fe(C2O4)3]\u22193H2O in argon atmosphere, at a low heating rate (3\u00b0\/min), and in large amounts of the initial complex (~0.1 mole), has been studied. It was possible to distinguish four decomposition steps upon heating: In the temperature range of 50\u2013100 \u00b0C\u2014the loss of crystal water; 100\u2013190 \u00b0C\u2014stability region of dehydrated complex; 230\u2013270 \u00b0C\u2014the range of stability of intermediate phase with the formula CoFe(NH3)2(C2O4)2; 270\u2013350 \u00b0C\u2014thermal decomposition of the intermediate with the formation of metallic products and further air oxidation with the formation of Co1.5Fe1.5O4. Catalytic properties of thermolysis products were tested in the decomposition reaction of H2O2 (inactive), oxidation of acetone (average activity), and decomposition of ammonium perchlorate (highly active).<\/jats:p>","DOI":"10.3390\/ma12020221","type":"journal-article","created":{"date-parts":[[2019,1,11]],"date-time":"2019-01-11T04:10:16Z","timestamp":1547179816000},"page":"221","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Solid-State Transformations in Inner Coordination Sphere of [Co(NH3)6][Fe(C2O4)3]\u22193H2O as a Route to Access Catalytically Active Co-Fe Materials"],"prefix":"10.3390","volume":"12","author":[{"given":"Denis P.","family":"Domonov","sequence":"first","affiliation":[{"name":"I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of RAS KSC (ICTREMR), Akademgorodok, 26a, Apatity, Murmansk region 184209, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sophia I.","family":"Pechenyuk","sequence":"additional","affiliation":[{"name":"I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of RAS KSC (ICTREMR), Akademgorodok, 26a, Apatity, Murmansk region 184209, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yulia P.","family":"Semushina","sequence":"additional","affiliation":[{"name":"I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of RAS KSC (ICTREMR), Akademgorodok, 26a, Apatity, Murmansk region 184209, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8390-4288","authenticated-orcid":false,"given":"Kirill V.","family":"Yusenko","sequence":"additional","affiliation":[{"name":"BAM Federal Institute of Materials Research and Testing, Richard-Willst\u00e4tter Str. 11, D-12489 Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,1,10]]},"reference":[{"key":"ref_1","unstructured":"Borshch, V.N., Artjuk, V.A., and Zhuk, S.N. (2017, January 20\u201321). Intermetallics synthesized from a mechanized mixture of metals as precursors of oxidation and reduction catalysts. Proceedings of the International Conference Dedicated to the 50th Anniversary of Self-Propagating High Temperature Synthesis (SHS-50), Chernogolovka, Russia."},{"key":"ref_2","unstructured":"Borshch, V.N., Pugacheva, E.V., Zhuk, S.N., Andreev, D.E., Sanin, V.N., and Yukhvid, V.I. (2017, January 20\u201321). SHS-intermetallic compounds as promising materials for the synthesis of highly effective polymetallic catalysts. Proceedings of the International Conference Dedicated to the 50th Anniversary of Self-Propagating High Temperature Synthesis (SHS-50), Chernogolovka, Russia."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"46","DOI":"10.1023\/A:1024980930337","article-title":"Synthesis and structure of binary complexes of platinum group metals\u2014Precursors of metallic materials","volume":"44","author":"Korenev","year":"2003","journal-title":"J. Struct. Chem."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"913","DOI":"10.1134\/S0036024414060119","article-title":"Products of binary complex compounds thermolysis: Catalysts for hydrogen peroxide decomposition","volume":"88","author":"Domonov","year":"2014","journal-title":"Russ. J. Phys. Chem."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1134\/S0036024416010222","article-title":"Acid\u2212base and catalytic properties of the products of oxidative thermolysis of double complex compounds","volume":"90","author":"Pechenyuk","year":"2016","journal-title":"Russ. J. Phys. Chem."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1134\/S003602441701023X","article-title":"Relationship between the catalytic properties of the products of the oxidative thermolysis of certain complexes and the porous structures of samples in the oxidation reactions of volatile organic compounds","volume":"91","author":"Semushina","year":"2017","journal-title":"Russ. J. Phys. Chem."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1041","DOI":"10.1007\/s11172-018-2177-5","article-title":"Thermal decomposition of ammonium perchlorate in the presence of bimetallic additives","volume":"67","author":"Domonov","year":"2018","journal-title":"Rus. Chem. Bull."},{"key":"ref_8","unstructured":"Matyukha, V.A., and Zhiganov, A.N. (2012). Oxalates of Transition Metals, IzdAT. (In Russian)."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"263","DOI":"10.1524\/zksu.2009.0038","article-title":"XRD investigation and thermal properties of [Ir(NH3)6][Co(C2O4)3]\u00b7H2O and [Co(NH3)6][Ir(C2O4)3]\u2014Precursors for Co0.50Ir0.5","volume":"30","author":"Filatov","year":"2009","journal-title":"Z. Kristallogr. Suppl."},{"key":"ref_10","first-page":"116","article-title":"Thermal decomposition of cationic, anionic and double complex compounds of 3d metals","volume":"62","author":"Pechenyuk","year":"2018","journal-title":"Russ. Chem. J."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1134\/S1070328415020086","article-title":"Binary complexes [Co(A)6][M(C2O4)3] (A = NH3, 1\/2C2H8N2, M = Fe, Cr): Synthesis, properties, and thermal decomposition","volume":"41","author":"Pechenyuk","year":"2015","journal-title":"Russ. J. Coord. Chem."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1963","DOI":"10.1007\/s11172-015-1100-6","article-title":"Thermal decomposition of [Co(a)6][M(Ox)3]\u00b73H2O in an inert and reducing atmosphere","volume":"64","author":"Semushina","year":"2015","journal-title":"Russ. Chem. Bull."},{"key":"ref_13","unstructured":"Brauer, G.F. (1978). Handbuch der Pr\u00e4parativen Anorganischen Chemie (in drei Banden), Enke."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"2212","DOI":"10.1134\/S1070363217090481","article-title":"Thermal behaviour of binary complex compounds containing hexacyanoferrate-anion","volume":"87","author":"Pechenyuk","year":"2017","journal-title":"Russ. J. Gen. Chem."},{"key":"ref_15","unstructured":"Nakamoto, K. (1986). Infrared and Raman Spectra of Inorganic and Coordination Compounds, John Wiley & Sons. [4th ed.]."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"681","DOI":"10.1016\/0022-3697(92)90207-T","article-title":"Studies on the mechanism of thermal dehydration of cobalt oxalate dihydrate","volume":"53","author":"Venkataraman","year":"1992","journal-title":"J. Phys. Chem. Solids"},{"key":"ref_17","first-page":"269","article-title":"The structure of oxalate FeC2O4\u22192(H2O)","volume":"26","author":"Mazzi","year":"1957","journal-title":"Periodico di Mineralogia."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"446","DOI":"10.1016\/j.powtec.2014.08.038","article-title":"Thermal decomposition of ammonium perchlorate in the presence of Cu(OH)2\u00b72Cr(OH)3 nanoparticles","volume":"268","author":"Zheng","year":"2014","journal-title":"Powder Technol."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"110","DOI":"10.1016\/j.tca.2015.06.023","article-title":"Catalytic thermal decomposition of ammonium perchlorate and combustion of composite solid propellants over green synthesized CuO nanoparticles","volume":"614","author":"Sharma","year":"2015","journal-title":"Thermochim. Acta"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"351","DOI":"10.1002\/prep.200800025","article-title":"Nanocrystalline Transition Metal Oxides as Cataysts in the Thermal Decomposition of Ammonium Perchlorate","volume":"34","author":"Kapoor","year":"2009","journal-title":"Propellants Explos. Pyrotech."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"7571","DOI":"10.1038\/s41598-018-26022-2","article-title":"The high efficient catalytic properties for thermal decomposition of ammonium perchlorate using mesoporous ZnCo2O4 rods synthesized by oxalate co-precipitation method","volume":"8","author":"Xiao","year":"2018","journal-title":"Sci. Rep."}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/12\/2\/221\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T12:24:56Z","timestamp":1760185496000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/12\/2\/221"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,1,10]]},"references-count":21,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2019,1]]}},"alternative-id":["ma12020221"],"URL":"https:\/\/doi.org\/10.3390\/ma12020221","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,1,10]]}}}