Large ring molecules made of mainly inorganic and metal atoms
Figure showing the metallacrown analogy to the organic crown ether. Ligand substituents are omitted for clarity. a) 12-Crown-4 b) 12-MCFe(III)N(shi)-4 c) 15-Crown-5 d) 15-MCCu(II)N(picHA)-5
In chemistry, metallacrowns are a macrocyclic compounds that consist of metal ions and solely or predominantly heteroatoms in the ring. Classically, metallacrowns contain an [M–N–O] repeat unit in the macrocycle. First discovered by Vincent L. Pecoraro and Myoung Soo Lah in 1989,[1] metallacrowns are best described as inorganic analogues of crown ethers. To date, over 600 reports of metallacrown research have been published. Metallacrowns with sizes ranging from 12-MC-4 to 60-MC-20 have been synthesized.[2]
^Lah, M. S.; V. L., Pecoraro (1989). "Isolation and Characterization of {MnII[MnIII(salicylhydroximate)]4(acetate)2(DMF)6}∙2DMF: An Inorganic Analogue of M2+(12-crown-4)". J. Am. Chem. Soc.111 (18): 7258. doi:10.1021/ja00200a054.
^Mezei, G.; Zaleski, C. M.; V. L., Pecoraro (2007). "Structural and functional evolution of metallacrowns". Chem. Rev.107 (11): 4933–5003. doi:10.1021/cr078200h. PMID 17999555.
metallacrowns are a macrocyclic compounds that consist of metal ions and solely or predominantly heteroatoms in the ring. Classically, metallacrowns contain...
lengths of chained cations. Aza-crown ether Thia-crown ether Cryptand Metallacrown van der Ham, Alex; Hansen, Thomas; Lodder, Gerrit; Codée, Jeroen D. C...
bearing functional groups that connect the pieces via "self-assembly." Metallacrowns are metallomacrocycles generated via a similar self-assembly approach...
(2019-08-01). "The crystal structures of {LnCu5}3+ (Ln = Gd, Dy and Ho) 15-metallacrown-5 complexes and a reevaluation of the isotypic EuIII analogue". Acta...
coordination chemistry and supramolecular chemistry, examples include metallacrowns, metallacryptands, metallahelices, and molecular wheels. Metal-alkene...
Salicylhydroxamic acid is also a common ligand utilized in the synthesis of metallacrowns.[citation needed] In plants, some fungi and some protists with the alternative...
Global Information