On November 24, 2009, Mereacre, Valeriu; Ako, Ayuk M.; Akhtar, Muhammad Nadeem; Lindemann, Anja; Anson, Christopher E.; Powell, Annie K. published an article.Electric Literature of 2160-93-2 The title of the article was Homo- and Heterovalent Polynuclear Cerium and Cerium/Manganese Aggregates. And the article contained the following:
Reactions of CeIII(NO3)3·6H2O or (NH4)2[CeIV(NO3)6] with Mn-containing starting materials result in seven novel polynuclear Ce or Ce/Mn complexes with pivalato (tBuCO2-) and, in most cases, auxiliary N,O- or N,O,O-donor ligands. With nuclearities from 6-14, the compounds present aesthetically pleasing structures. [CeIV6(μ3-O)4(μ3-OH)4(μ-O2CtBu)12] (1), [CeIV6MnIII4(μ4-O)4(μ3-O)4(O2CtBu)12(ea)4(OAc)4]·4H2O·4MeCN (ea- = 2-aminoethanolato; 2), [CeIV6MnIII8(μ4-O)4(μ3-O)8(pye)4(O2CtBu)18]2[CeIV6(μ3-O)4(μ3-OH)4(O2CtBu)10(NO3)4] [CeIII(NO3)5(H2O)]·21 MeCN (pye- = pyridine-2-ethanolato; 3), and [CeIV6CeIII2MnIII2(μ4-O)4(μ3-O)4(tbdea)2(O2CtBu)12(NO3)2(OAc)2]·4 CH2Cl2 (tbdea2- = 2,2′-[tert-butylimino]bis[ethanolato]; 4) all contain structures based on an octahedral {CeIV6(μ3-O)8} core, in which many of the O-atoms are either protonated to give (μ3-OH)- hydroxo ligands or coordinate to further metal centers (MnIII or CeIII) to give interstitial (μ4-O)2- oxo bridges. Decanuclear [CeIV8CeIIIMnIII(μ4-O)3(μ3-O)3(μ3-OH)2(μ-OH)(bdea)4(O2CtBu)9.5(NO3)3.5(OAc)2]·1.5 MeCN (bdea2- = 2,2′-[butylimino]bis[ethanolato]; 5) contains a rather compact CeIV7 core with the CeIII and MnIII centers well-separated from each other on the periphery. The aggregate in [CeIV4MnIV2(μ3-O)4(bdea)2(O2CtBu)10(NO3)2]·4 MeCN (6) is based on a quasi-planar {MnIV2CeIV4(μ3-O)4} core made up of four edge-sharing {MnIVCeIV2(μ3-O)} or {CeIV3(μ3-O)} triangles. The structure of [CeIV3MnIV4MnIII(μ4-O)2(μ3-O)7(O2CtBu)12(NO3)(furan)]·6 H2O (7·6 H2O) can be considered as {MnIV2CeIV2O4} and distorted {MnIV2MnIIICeIVO4} cubane units linked through a central (μ4-O) bridge. The Ce6Mn8 is the highest nuclearity yet reported for a heterometallic Ce/Mn aggregate. In contrast to most of the previously reported heterometallic Ce/Mn systems, which contain only CeIV and either MnIV or MnIII, some of the aggregates presented here show mixed valency, either MnIV/MnIII (see 7) or CeIV/CeIII (see 4 and 5). Some of the compounds, including the heterovalent CeIV/CeIII 4, could be obtained from either CeIII(NO3)3·6 H2O or (NH4)2[CeIV(NO3)6] as starting material. The experimental process involved the reaction of 2,2′-(tert-Butylazanediyl)diethanol(cas: 2160-93-2).Electric Literature of 2160-93-2
The Article related to cluster cerium manganese oxo preparation mixed valent, crystal structure cerium manganese oxo cluster, Inorganic Chemicals and Reactions: Coordination Compounds and other aspects.Electric Literature of 2160-93-2
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