N-monofunctionalized 1,4,7-Triazacyclononane macrocycles as building blocks in inorganic crystal engineering

The syntheses of N-(3-prop-1-ene)-1,4,7-triazacyclononane molybdenum tricar bonyl (2), N-(4-but-1-ene)-1,4,7-triazacyclononane molybdenum tricarbonyl ( 3), N-(3-prop-1-ene)-1,4,7-triazacyclononane molybdenum trioxide (5), N-(4- but-1-ene)-1,4,7-triazacyclononane molybdenum trioxide (6), N-(hydroxyethyl )-1,4,7-triazacyclononane molybdenum trioxide (7), and N-(2-methylpyridyl)- 1,4,7-triazacyclononane molybdenum trioxide (8) have been achieved. The obj ective of this work is to systematically vary the functionality of the pend ant group in order to create different crystal packing in the solid state. This is evidenced in comparing the structures of 1,4,7-triazacyclononane mo lybdenum trioxide (4) and 5-8, which were determined using X-ray crystallog raphy. The synthesis and characterization of the new ligand N-(2-methylpyri dyl)-1,4,7-triazacyclononane (L-5) is reported.