Soluble nitrosoguanidine- and N-methylnitrosoguanidine-based
metallotriazole complexes of ruthenium(II) monocarbonyls have been
prepared and characterized. Both nitrosoguanidines prove to be strong
chelates with the formally π-accepting nitroso nitrogen binding cis to carbon monoxide and a π-donating amide trans to the CO. The resulting ensemble consists of ruthenium
examples of 1-metallo-2,3,5-triazoles. The ruthenium coordination
sphere is completed by anions, either H–, Cl–, or Ph–, trans to
the nitroso group as well as two mutually trans PPh3 groups. The π-donating amide group is formally sp2 hybridized with a planar nitrogen to give a strongly bound
five-membered chelating anion. Together, these results illustrate
the remarkable potential for the nitrosoguanidinates as a family of
new metal chelates.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.