Journal
DALTON TRANSACTIONS
Volume 52, Issue 44, Pages 16364-16375Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d3dt01634j
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Bis(bidentate) and bis(tridentate) Co(III) complexes of N-(2-hydroxyethyl)ethane-1,2-diamine (heen), 2[(2-aminoethyl)amino]ethan-1-olate (heen-H), or N-(2-chloroethyl)ethane-1,2-diamine (ceen) ligands have been synthesized and various reaction conditions have been established for their syntheses. They can all be ultimately derived from (OC-6-12)-[Co(heen)(2)(NO2)(2)]NO3 and provide access to the trans amine trans chloride nitrogen mustard complex, (OC-6-12)-[Co(ceen)(2)(Cl)(2)]Cl. Although complex isomeric mixtures were obtained from the reaction of (OC-6-12)-[Co(heen)(2)(NO2)(2)]NO3 under different reaction conditions, the trans amine trans chlorido configuration around the Co(III) metal centre of the (OC-6-12)-[Co(ceen)2(Cl)2]Cl complex was favored.
Bis(bidentate) and bis(tridentate) Co(III) complexes of N-(2-hydroxyethyl)ethane-1,2-diamine (heen), 2[(2-aminoethyl)amino]ethan-1-olate (heen-H), or N-(2-chloroethyl)ethane-1,2-diamine (ceen) ligands have been synthesised, and a range of reaction conditions established for their syntheses by different routes. They can all be ultimately derived from (OC-6-12)-[Co(heen)(2)(NO2)(2)]NO3 and provide access to the trans amine trans chloride nitrogen mustard complex, (OC-6-12)-[Co(ceen)(2)(Cl)(2)]Cl. Although complex isomeric mixtures were obtained from the reaction of (OC-6-12)-[Co(heen)(2)(NO2)(2)]NO3 under different reaction conditions, ultimately, the trans amine trans chlorido configuration around the Co(III) metal centre of the (OC-6-12)-[Co(ceen)2(Cl)2]Cl complex was favoured.
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