The synthetic method for the tetradentate ligand 1,2-bis(2-hydroxyanilino)ethane (L1  H2) was further optimized by an increase in reaction time to produce a yield of 90-93%. MoO2L1  was also successfully synthesized, with a yield of 81%, from a ligand substitution reaction with MoO2(acac)2 and L1  H2. Crystals of the MoO2L1  were analyzed with a Bruker X2S diffractometer and yielded a crystal structure. This complex is a distorted octahedron; the nitrogens from L1  are located trans to the terminal oxo groups. During the summer of 2012, it was also determined that while most Mo(NAr)2 complexes can be synthesized via two methods, reacting an isocyanate with MoO2L1  at 150oC or reacting Mo(N,2,6-diisopropylphenyl)2dme with Na2L1  at -78oC, Mo(NAr)2L1  solutions are temperature sensitive. Thus, only the latter reaction yielded product in low yields; however, the solid Mo(NAr)2L1 is not temperature sensitive.

Mo(VI) complexes synthesized with 1,2-bis(2-hydroxyanilino)ethane

245th National Meeting (2013)

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