A series of molybdenum complexes based on chiral C 2-symmetricpicchxn-type ligands (N 4 ligands, defined as trans-N,N'-bis(heterocycl-2-ylmethyl)-1,2-diaminocyclohexanes) has been synthesized and characterized. Reported and novel picchxn-type ligands form (κ 3-N 4)Mo(CO) 3 , [(κ 4-N 4)Mo(NO)(CO)]PF 6 , and [(κ 4-N 4)Mo(NO)X]PF 6 (X = Br, I) compounds. Multiple tridentate (κ 3) and tetradentate (κ 4) ligand configurations were observed, and the favored κ 4 configuration was found to vary with N 4 heterocycle identity. Heterocycle variation allowed for directed modification of the molybdenum electronic characteristics, but none of the studied {(κ 4-N 4)Mo(NO)} + fragments was found to be a suitable π-base for dearomatization chemistry. The crystal structures of eight molybdenum complexes with picchxn-type ligands were determined.
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.