Simultaneous transformation of a polynuclear complex and nitroxide in the reaction of the {Co6(O)2Piv10} cluster with 2,4,4,5,5-pentamethyl-4,5-dihydro-1H-imidazolyl-(3-oxide)-1-oxyl

The reaction of [Co6(O)2Piv10Thf3H2O] · 1.5Thf, where Piv=(CH3)3CCO2- and Thf = tetrahydrofuran, with nitroxides 2,4,4,5,5-pentamethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl (NIT-Me) and/or 2,4,4,5,5-pentamethyl-4,5-dihydro-1H  -imidazole-1-oxyl (Im-Me) leads to simultaneous transformation of both the polymetallic core and the nitroxides. New polynuclear complexes: [Co9Piv12(OH)2L21]·0.5C7H16, [Co9Piv12(OH)2L21]·C7H16, [Co9Piv12(OH)2L21]·2C7H16, [Co8Piv8(OH)6(HPiv)4(H2O)2L24], L6[Co6(O)4Piv9(H2O)2] · 2HPiv, [Co6Piv8(HPiv)2L25], [Co6Piv8(HPiv)2L25]·C6H6,[Co6Piv8(HPiv)2L25][Co10Piv14(HPiv)2L22L23]·C7H16, and [Co10Piv14(HPiv)2L22L23]·C6H14 have been synthesized and characterized by X-ray crystallography; in these complexes, L1-L5 are modified molecules of the starting NIT-Me and/or Im-Me:Figure optionsDownload full-size imageDownload as PowerPoint slide

Graphical abstractNew group of heterospin complexes based on polynuclear cobalt pivalates with nitroxides have been synthesized and characterized by X-ray crystallography.Figure optionsDownload full-size imageDownload as PowerPoint slide