Metallacrowns are a class of coordination compounds that are inorganic analogs to crown ethers. While a crown ether possesses the repeat unit of carbon-carbon-oxygen, a metallacrown possesses the repeat unit of metal-nitrogen-oxygen. Most metallacrowns can encapsulate metal ions within the cavity made by the [M-N-O] ring. In an attempt to synthesize novel metallacrowns, the metallacrown MnII(Fm)2[15-MCMn(III)N(shi)-5](Im)5 [where shi3- = salicylhydroximate, Fm = formate, and Im = imidazole] was synthesized and characterized by X-ray diffraction and infrared spectroscopy. The compound crystallized in the monoclinic space group P 21/c with a = 13.2053(12) angstroms, b= 24.621(2) angstroms, c= 21.491(2) angstroms, alpha= 90 degrees, beta= 101.8610(10) degrees, gamma= 90 degrees, V=6838.0(11) angstroms3, and Z= 4. In addition, the imidazole molecules and carboxylate groups will be substituted with other derivatives that will hopefully be added to the MnII(X)2[15-MCMn(III)N(shi)-5] molecule, where X = carboxylate anion.

Structure and characterization of a manganese 15-MC-5

245th National Meeting (2013)

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