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. Author manuscript; available in PMC: 2017 Aug 16.
Published in final edited form as: Polyhedron. 2016 Aug 16;114:118–127. doi: 10.1016/j.poly.2015.11.014

Scheme 1.

Scheme 1

Ligand synthesis. (a) (i) CH2Cl2, 2-picolyl chloride hydrochloride, NaHCO3 (ii) Decahydro-2a,4a,6a,8a-tetraazacyclopenta[fg]acenaphthylene, KI. (b) MeCN, CH3I. (c) EtOH, NaBH4. (d) EtOH, NaBH4.