%0 Journal Article %A Kozhukh, Julia %A Lippard, Stephen J. %D 2012 %T Variable Nitric Oxide Reactivity of Tropocoronand Cobalt(III) Nitrite Complexes as a Function of the Polymethylene Linker Chain Length %U https://acs.figshare.com/articles/journal_contribution/Variable_Nitric_Oxide_Reactivity_of_Tropocoronand_Cobalt_III_Nitrite_Complexes_as_a_Function_of_the_Polymethylene_Linker_Chain_Length/2491696 %R 10.1021/ic3012266.s001 %2 https://ndownloader.figshare.com/files/4134559 %K tetrahedral cobalt dinitrosyl units %K dicobalt tetranitrosyl species %K Variable Nitric Oxide Reactivity %K TC %K cobalt tropocoronands %K nitric oxide %K Co %X The size-dependent reactivity of cobalt tropocoronands [TC-n,n]2– is manifest in the NO chemistry of the cobalt­(III) nitrite complexes [Co­(η2-NO2)­(TC-n,n)] (n = 4–6), the synthesis and characterization of which are reported for the first time. Complete conversion of [Co­(η2-NO2)­(TC-4,4)] to the cobalt mononitrosyl [Co­(NO)­(TC-4,4)] occurs upon exposure to NO­(g). In contrast, addition of NO­(g) to [Co­(η2-NO2)­(TC-5,5)] generates both cobalt mono- and dinitrosyl adducts, and addition of nitric oxide to [Co­(η2-NO2)­(TC-6,6)] converts this complex to the dicobalt tetranitrosyl species [Co2(NO)4(TC-6,6)]. In the latter complex, two tetrahedral cobalt dinitrosyl units are bound to the aminotroponeiminate poles of the [TC-6,6]2– ligand. These results significantly broaden the chemistry of cobalt tropocoronands with nitric oxide and the nitrite anion. %I ACS Publications